chore: GPLv3 license + F-Droid packaging (metadata, recipe, guide)

- LICENSE: GNU GPLv3
- fastlane/metadata (de-DE + en-US): title, descriptions, changelog, icon —
  used by both the own F-Droid repo and the official listing
- fdroid/com.scarriffle.calendarr.yml: ready-to-submit fdroiddata build recipe
- FDROID.md: how to run the own repo (fdroid.scarriffle.com) and submit to
  official F-Droid, incl. the signing-key caveat

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.gitignore

@@ -38,6 +38,7 @@ captures/
 # Keystore files
 *.jks
 *.keystore
+keystore.properties
 
 # macOS
 .DS_Store

FDROID.md

@@ -0,0 +1,80 @@
+# Publishing Calendarr on F-Droid
+
+Two independent channels — do both in parallel:
+
+- **Own repo (live today):** you build + sign the APK, generate a small catalog,
+  host it at a URL; users add that URL in the F-Droid app.
+- **Official F-Droid (~weeks to be accepted, then automatic):** F-Droid builds +
+  signs from source and lists it in the catalog every F-Droid user already has.
+
+The app is GPLv3 and has **no** non-free dependencies (no Play Services / Firebase),
+so it is F-Droid-eligible. Store-listing metadata lives in `fastlane/metadata/…`.
+
+> ⚠️ Signatures differ between the two channels: your own repo serves APKs signed
+> with **your** keystore; the official build is signed with **F-Droid's** key. A
+> user can't seamlessly update from one to the other (reinstall once). To unify
+> later, set up *Reproducible Builds* so F-Droid ships your signature.
+
+---
+
+## A) Your own repo (fdroid.scarriffle.com)
+
+Needs the `fdroidserver` tool + Android SDK build-tools (for `aapt`).
+
+```bash
+# 1. Install the tool (macOS)
+brew install fdroidserver          # or: pipx install fdroidserver
+
+# 2. Build a SIGNED release APK (uses keystore.properties; F-Droid repos serve
+#    APKs, not AABs)
+./gradlew assembleRelease
+# → app/build/outputs/apk/release/app-release.apk
+
+# 3. Create the repo (once). Generates config.yml + an index-signing key.
+mkdir -p ~/calendarr-fdroid && cd ~/calendarr-fdroid
+fdroid init
+
+# 4. Drop the signed APK in and copy the store metadata
+cp "/path/to/Calendarr Android/app/build/outputs/apk/release/app-release.apk" repo/
+mkdir -p metadata
+# copy the fastlane texts/icons so descriptions show in the client:
+cp -r "/path/to/Calendarr Android/fastlane/metadata/android" metadata/com.scarriffle.calendarr
+
+# 5. Generate/refresh the signed index
+fdroid update -c --pretty
+
+# 6. Upload the whole ~/calendarr-fdroid/repo directory to your webserver at:
+#    https://fdroid.scarriffle.com/fdroid/repo
+```
+
+Users then open F-Droid → Settings → Repositories → **+** →
+`https://fdroid.scarriffle.com/fdroid/repo` → Calendarr appears and auto-updates.
+
+**Each new release:** bump `versionCode`/`versionName` in `app/build.gradle.kts`,
+`./gradlew assembleRelease`, copy the new APK into `repo/`, `fdroid update -c`,
+re-upload. Keep the OLD apks in `repo/` too (users on older versions still update).
+
+---
+
+## B) Official F-Droid (fdroiddata)
+
+Prereqs: the `SourceCode` repo in `fdroid/com.scarriffle.calendarr.yml` must be
+**publicly clonable** (make the Gitea repo public, or mirror to GitHub/GitLab and
+point `Repo:`/`SourceCode:` there), and a signed git tag `v1.1.0` must exist
+(created for this release).
+
+1. Fork <https://gitlab.com/fdroid/fdroiddata>.
+2. Add our recipe as `metadata/com.scarriffle.calendarr.yml`
+   (copy from `fdroid/com.scarriffle.calendarr.yml` in this repo).
+3. Optional local sanity check: `fdroid lint com.scarriffle.calendarr` and
+   `fdroid build -v -l com.scarriffle.calendarr`.
+4. Open a Merge Request. F-Droid reviews, builds and publishes (this first review
+   is the slow part — weeks). Afterwards, `AutoUpdateMode` picks up each new
+   `v<versionName>` tag automatically.
+
+---
+
+## Screenshots (both channels)
+Add PNG/JPG screenshots to
+`fastlane/metadata/android/en-US/images/phoneScreenshots/` (and `de-DE/…`),
+named `1.png`, `2.png`, … They then show on the F-Droid listing.

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

app/build.gradle.kts

@@ -1,3 +1,6 @@
+import java.io.FileInputStream
+import java.util.Properties
+
 plugins {
     id("com.android.application") version "8.10.0"
     id("org.jetbrains.kotlin.android") version "1.9.20"
@@ -5,25 +8,47 @@ plugins {
     id("com.google.dagger.hilt.android") version "2.49"
 }
 
+// Release signing is driven by a git-ignored keystore.properties in the repo
+// root (see keystore.properties.example). Absent (e.g. CI / fresh clone) the
+// release build simply stays unsigned — debug builds are unaffected.
+val keystorePropsFile = rootProject.file("keystore.properties")
+val keystoreProps = Properties().apply {
+    if (keystorePropsFile.exists()) FileInputStream(keystorePropsFile).use { load(it) }
+}
+
 android {
     namespace = "com.scarriffle.calendarr"
-    compileSdk = 34
+    compileSdk = 35
 
     defaultConfig {
         applicationId = "com.scarriffle.calendarr"
         minSdk = 24
-        targetSdk = 34
-        versionCode = 1
-        versionName = "0.1.0"
+        targetSdk = 35
+        versionCode = 2
+        versionName = "1.1.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables { useSupportLibrary = true }
     }
 
+    signingConfigs {
+        if (keystorePropsFile.exists()) {
+            create("release") {
+                storeFile = file(keystoreProps.getProperty("storeFile"))
+                storePassword = keystoreProps.getProperty("storePassword")
+                keyAlias = keystoreProps.getProperty("keyAlias")
+                keyPassword = keystoreProps.getProperty("keyPassword")
+            }
+        }
+    }
+
     buildTypes {
         release {
             isMinifyEnabled = false
             proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
+            if (keystorePropsFile.exists()) {
+                signingConfig = signingConfigs.getByName("release")
+            }
         }
     }
 

app/src/main/AndroidManifest.xml

@@ -2,6 +2,8 @@
 
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.READ_CONTACTS" />
 
     <application
         android:name=".CalendarrApplication"
@@ -21,5 +23,9 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
+
+        <receiver
+            android:name=".notifications.ReminderReceiver"
+            android:exported="false" />
     </application>
 </manifest>

app/src/main/java/com/scarriffle/calendarr/MainActivity.kt

@@ -3,6 +3,7 @@ package com.scarriffle.calendarr
 import android.os.Bundle
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
 import androidx.core.splashscreen.SplashScreen.Companion.installSplashScreen
 import com.scarriffle.calendarr.ui.CalendarrRoot
 import dagger.hilt.android.AndroidEntryPoint
@@ -13,6 +14,10 @@ class MainActivity : ComponentActivity() {
         // Covers the window from the first frame (incl. warm-start), then hands
         // off to the in-app branded splash which stays until data is loaded.
         installSplashScreen()
+        // Draw edge-to-edge so system-bar insets reach every window, including
+        // ModalBottomSheets — otherwise navigationBarsPadding() inside the sheets
+        // resolves to 0 and the bottom menu rows hide behind the nav bar.
+        enableEdgeToEdge()
         super.onCreate(savedInstanceState)
         setContent {
             CalendarrRoot()

app/src/main/java/com/scarriffle/calendarr/data/CalendarRepository.kt

@@ -35,6 +35,13 @@ data class LoginResult(val token: String, val username: String, val isAdmin: Boo
 
 data class TotpSetup(val secret: String, val qrUrl: String)
 
+/** A single calendar's sync failure, surfaced alongside a (still-successful) events fetch.
+ *  [calendarId] is null for account-wide failures (no single calendar is at fault). */
+data class SyncError(val source: String, val name: String, val calendarId: Int?, val message: String)
+
+/** Result of [CalendarRepository.fetchEvents]: the merged events plus any per-calendar sync failures. */
+data class EventsResult(val events: List<CalEvent>, val errors: List<SyncError>)
+
 /**
  * Single entry point for all server interaction. Wraps [com.scarriffle.calendarr.data.remote.CalendarrApi],
  * converts HTTP failures into [ApiException]s carrying the server's `detail`
@@ -111,24 +118,31 @@ class CalendarRepository @Inject constructor(
 
     suspend fun getSettings(): AppSettings = guarded { api.getSettings() }
 
-    suspend fun updateSettings(s: AppSettings) = guarded {
-        api.updateSettings(
-            jsonBody(
-                "default_view" to s.defaultView,
-                "week_start_day" to s.weekStartDay,
-                "primary_color" to s.primaryColor,
-                "accent_color" to s.accentColor,
-                "today_color" to s.todayColor,
-                "dim_past_events" to s.dimPastEvents,
-                "text_contrast" to s.textContrast,
-                "line_contrast" to s.lineContrast,
-                "hour_height" to s.hourHeight,
-                "language" to s.language,
-                "month_divider_color" to s.monthDividerColor,
-                "month_label_color" to s.monthLabelColor,
-                "private_event_visibility" to s.privateEventVisibility,
-            )
-        ).ensureSuccess()
+    /** Push only the values whose sync flag is on (partial update; the server
+     *  leaves unsynced columns untouched), plus the account-wide flag map. */
+    suspend fun updateSettings(s: AppSettings, flags: Map<String, Boolean>) = guarded {
+        val body = mutableMapOf<String, Any?>()
+        fun addIf(key: String, value: Any?) { if (flags[key] == true) body[key] = value }
+        addIf("default_view", s.defaultView)
+        addIf("week_start_day", s.weekStartDay)
+        addIf("dim_past_events", s.dimPastEvents)
+        addIf("hour_height", s.hourHeight)
+        addIf("default_event_duration_minutes", s.defaultEventDurationMinutes)
+        // Explicit JSON null clears it (off); jsonBody drops Kotlin nulls.
+        addIf("default_reminder_minutes", s.defaultReminderMinutes ?: org.json.JSONObject.NULL)
+        addIf("primary_color", s.primaryColor)
+        addIf("accent_color", s.accentColor)
+        addIf("today_color", s.todayColor)
+        addIf("text_color", s.textColor)
+        addIf("bg_color", s.backgroundColor)
+        addIf("line_color", s.lineColor)
+        addIf("month_divider_color", s.monthDividerColor)
+        addIf("month_label_color", s.monthLabelColor)
+        addIf("cache_months", s.cacheMonths)
+        addIf("month_view_paged", s.monthViewPaged)
+        // The flag map is always account-wide; send it every push.
+        body["sync_flags"] = org.json.JSONObject(flags as Map<*, *>)
+        api.updateSettings(jsonBody(body)).ensureSuccess()
     }
 
     suspend fun getProfile(): UserProfile = guarded { api.getProfile() }
@@ -176,8 +190,17 @@ class CalendarRepository @Inject constructor(
 
     suspend fun getLocalCalendars(): List<LocalCalendar> = guarded { api.getLocalCalendars() }
 
-    suspend fun addLocalCalendar(name: String, color: String) =
-        guarded { api.addLocalCalendar(jsonBody("name" to name, "color" to color)) }
+    suspend fun addLocalCalendar(
+        name: String, color: String,
+        isBirthday: Boolean = false, birthdayNotifyDaysBefore: Int? = null,
+    ) = guarded {
+        api.addLocalCalendar(jsonBody(buildMap {
+            put("name", name)
+            put("color", color)
+            if (isBirthday) put("is_birthday", true)
+            if (birthdayNotifyDaysBefore != null) put("birthday_notify_days_before", birthdayNotifyDaysBefore)
+        }))
+    }
 
     suspend fun deleteLocalCalendar(id: Int) = guarded { api.deleteLocalCalendar(id).ensureSuccess() }
 
@@ -212,9 +235,11 @@ class CalendarRepository @Inject constructor(
     suspend fun deleteHomeAssistantAccount(id: Int) =
         guarded { api.deleteHomeAssistantAccount(id).ensureSuccess() }
 
-    /** Change a local calendar's colour. */
+    /** Change a local calendar's colour. Uses the colour-only endpoint so share
+     *  recipients can recolour their view (own per-user colour) without needing
+     *  write access or being able to rename the calendar. */
     suspend fun updateLocalCalendarColor(id: Int, color: String) = guarded {
-        api.updateLocalCalendar(id, jsonBody("color" to color)).ensureSuccess()
+        api.setLocalCalendarColor(id, jsonBody("color" to color)).ensureSuccess()
     }
 
     /** Change an iCal subscription's colour. */
@@ -244,12 +269,30 @@ class CalendarRepository @Inject constructor(
         }
     }
 
+    /** Toggle a calendar's server-side `reminders_enabled` flag (all sources). */
+    suspend fun setCalendarRemindersEnabled(source: String, calendarId: Int, enabled: Boolean) = guarded {
+        val body = jsonBody("reminders_enabled" to enabled)
+        when (source) {
+            "caldav" -> api.updateCalDAVCalendar(calendarId, body).ensureSuccess()
+            "local" -> api.updateLocalCalendar(calendarId, body).ensureSuccess()
+            "ical" -> api.updateICalSubscription(calendarId, body).ensureSuccess()
+            "google" -> api.updateGoogleCalendar(calendarId, body).ensureSuccess()
+            "homeassistant" -> api.updateHACalendar(calendarId, body).ensureSuccess()
+            else -> Unit
+        }
+    }
+
     /** Resolve all calendars the user can create events in. */
     suspend fun getWritableCalendars(): List<WritableCalendar> = withContext(Dispatchers.IO) {
         val result = mutableListOf<WritableCalendar>()
-        runCatching { api.getLocalCalendars() }.getOrDefault(emptyList()).forEach { cal ->
-            result += WritableCalendar("local-${cal.id}", cal.name, cal.color, "local", cal.id)
-        }
+        runCatching { api.getLocalCalendars() }.getOrDefault(emptyList())
+            // Exclude read-only shared calendars — offering them in the event
+            // editor only leads to a 403 on save. Own + read_write (incl. group)
+            // calendars stay.
+            .filter { it.owned || it.permission == "read_write" }
+            .forEach { cal ->
+                result += WritableCalendar("local-${cal.id}", cal.name, cal.color, "local", cal.id)
+            }
         runCatching { api.getCalDAVAccounts() }.getOrDefault(emptyList())
             .filter { it.enabled }
             .forEach { acc ->
@@ -281,35 +324,50 @@ class CalendarRepository @Inject constructor(
 
     // ---- Events ----
 
-    suspend fun fetchEvents(start: Instant, end: Instant): List<CalEvent> = withContext(Dispatchers.IO) {
+    suspend fun fetchEvents(start: Instant, end: Instant): EventsResult = withContext(Dispatchers.IO) {
         val resp = api.fetchEvents(Dates.isoUtc(start), Dates.isoUtc(end))
         resp.ensureSuccess()
-        val raw = resp.body()?.string() ?: return@withContext emptyList()
+        val raw = resp.body()?.string() ?: return@withContext EventsResult(emptyList(), emptyList())
         val root = JSONObject(raw)
-        val arr = root.optJSONArray("events") ?: return@withContext emptyList()
-        buildList {
-            for (i in 0 until arr.length()) {
+        val arr = root.optJSONArray("events")
+        val events = buildList {
+            if (arr != null) for (i in 0 until arr.length()) {
                 val obj = arr.optJSONObject(i) ?: continue
                 CalEvent.fromJson(obj)?.let { add(it) }
             }
         }
+        val errArr = root.optJSONArray("errors")
+        val errors = buildList {
+            if (errArr != null) for (i in 0 until errArr.length()) {
+                val obj = errArr.optJSONObject(i) ?: continue
+                add(SyncError(
+                    source = obj.optString("source"),
+                    name = obj.optString("name"),
+                    calendarId = if (obj.has("calendar_id")) obj.optInt("calendar_id") else null,
+                    message = obj.optString("message"),
+                ))
+            }
+        }
+        EventsResult(events, errors)
     }
 
     suspend fun createLocalEvent(
         calendarId: Int, title: String, start: Instant, end: Instant,
         isAllDay: Boolean, location: String, description: String, color: String?,
-        isPrivate: Boolean = false,
+        isPrivate: Boolean = false, reminders: List<Int>? = null,
+        rrule: String? = null, birthYear: Int? = null, externalUid: String? = null,
     ) = guarded {
-        api.createLocalEvent(eventBody(calendarId, title, start, end, isAllDay, location, description, color, isPrivate))
+        api.createLocalEvent(eventBody(calendarId, title, start, end, isAllDay, location, description, color, isPrivate, reminders, rrule, birthYear, externalUid))
             .ensureSuccess()
     }
 
     suspend fun updateLocalEvent(
         uid: String, title: String, start: Instant, end: Instant,
         isAllDay: Boolean, location: String, description: String, color: String?,
-        isPrivate: Boolean = false,
+        isPrivate: Boolean = false, reminders: List<Int>? = null,
+        rrule: String? = null, birthYear: Int? = null, externalUid: String? = null,
     ) = guarded {
-        api.updateLocalEvent(uid, eventBody(null, title, start, end, isAllDay, location, description, color, isPrivate))
+        api.updateLocalEvent(uid, eventBody(null, title, start, end, isAllDay, location, description, color, isPrivate, reminders, rrule, birthYear, externalUid))
             .ensureSuccess()
     }
 
@@ -446,8 +504,13 @@ class CalendarRepository @Inject constructor(
 
     // ---- Profile & targeted settings ----
 
-    suspend fun updateProfile(displayName: String?, username: String?, email: String?): String? = guarded {
-        val resp = api.updateProfile(jsonBody("display_name" to displayName, "username" to username, "email" to email))
+    suspend fun updateProfile(displayName: String?, username: String?, email: String?, directoryHidden: Boolean? = null): String? = guarded {
+        val resp = api.updateProfile(jsonBody(
+            "display_name" to displayName,
+            "username" to username,
+            "email" to email,
+            "directory_hidden" to directoryHidden,
+        ))
         resp.ensureSuccess()
         runCatching { JSONObject(resp.body()?.string() ?: "{}").optString("access_token").ifBlank { null } }.getOrNull()
     }
@@ -555,7 +618,8 @@ class CalendarRepository @Inject constructor(
     private fun eventBody(
         calendarId: Int?, title: String, start: Instant, end: Instant,
         isAllDay: Boolean, location: String, description: String, color: String?,
-        isPrivate: Boolean = false,
+        isPrivate: Boolean = false, reminders: List<Int>? = null,
+        rrule: String? = null, birthYear: Int? = null, externalUid: String? = null,
     ) = jsonBody(
         buildMap {
             calendarId?.let { put("calendar_id", it) }
@@ -567,6 +631,20 @@ class CalendarRepository @Inject constructor(
             put("description", description)
             if (!color.isNullOrBlank()) put("color", color)
             put("private", isPrivate)
+            if (reminders != null) put("reminders", org.json.JSONArray(reminders))
+            if (!rrule.isNullOrBlank()) put("rrule", rrule)
+            if (birthYear != null) put("birth_year", birthYear)
+            if (!externalUid.isNullOrBlank()) put("external_uid", externalUid)
         }
     )
+
+    // ---- Birthdays (Contacts import) ----
+
+    suspend fun getBirthdayEntries(calendarId: Int): List<com.scarriffle.calendarr.domain.model.BirthdayEntry> =
+        guarded { api.getBirthdays(calendarId) }
+
+    suspend fun reportBirthdaySync(deviceId: String, deviceName: String, count: Int) = guarded {
+        api.reportBirthdaySync(jsonBody("device_id" to deviceId, "device_name" to deviceName, "count" to count))
+            .ensureSuccess()
+    }
 }

app/src/main/java/com/scarriffle/calendarr/data/ContactsReader.kt

@@ -0,0 +1,66 @@
+package com.scarriffle.calendarr.data
+
+import android.content.Context
+import android.provider.ContactsContract
+
+/** One birthday read from the address book. */
+data class ContactBirthday(
+    val contactId: String,
+    val name: String,
+    val month: Int,
+    val day: Int,
+    val year: Int?,
+)
+
+/** Reads birthdays from the system Contacts (requires READ_CONTACTS). */
+object ContactsReader {
+
+    fun readBirthdays(context: Context): List<ContactBirthday> {
+        val out = mutableListOf<ContactBirthday>()
+        val projection = arrayOf(
+            ContactsContract.Data.CONTACT_ID,
+            ContactsContract.CommonDataKinds.Event.START_DATE,
+            ContactsContract.Data.DISPLAY_NAME,
+        )
+        val selection = "${ContactsContract.Data.MIMETYPE} = ? AND ${ContactsContract.CommonDataKinds.Event.TYPE} = ?"
+        val args = arrayOf(
+            ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE,
+            ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY.toString(),
+        )
+        context.contentResolver.query(ContactsContract.Data.CONTENT_URI, projection, selection, args, null)
+            ?.use { c ->
+                val idIdx = c.getColumnIndexOrThrow(ContactsContract.Data.CONTACT_ID)
+                val dateIdx = c.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Event.START_DATE)
+                val nameIdx = c.getColumnIndexOrThrow(ContactsContract.Data.DISPLAY_NAME)
+                while (c.moveToNext()) {
+                    val raw = c.getString(dateIdx) ?: continue
+                    val name = c.getString(nameIdx)?.takeIf { it.isNotBlank() } ?: continue
+                    val id = c.getString(idIdx) ?: continue
+                    val ymd = parseDate(raw) ?: continue
+                    out.add(ContactBirthday(id, name, ymd.second, ymd.third, ymd.first))
+                }
+            }
+        // A contact could carry more than one birthday row — keep the first.
+        return out.distinctBy { it.contactId }
+    }
+
+    /** Returns (year?, month, day). Handles "yyyy-MM-dd", "--MM-dd" (no year),
+     *  and "yyyyMMdd". */
+    private fun parseDate(raw: String): Triple<Int?, Int, Int>? = try {
+        val s = raw.trim()
+        when {
+            s.startsWith("--") -> {
+                val p = s.removePrefix("--").split("-")
+                Triple(null, p[0].toInt(), p[1].toInt())
+            }
+            s.contains("-") -> {
+                val p = s.split("-")
+                if (p.size == 3) Triple(p[0].toIntOrNull()?.takeIf { it > 0 }, p[1].toInt(), p[2].toInt()) else null
+            }
+            s.length == 8 -> Triple(s.substring(0, 4).toInt().takeIf { it > 0 }, s.substring(4, 6).toInt(), s.substring(6, 8).toInt())
+            else -> null
+        }
+    } catch (e: Exception) {
+        null
+    }
+}

app/src/main/java/com/scarriffle/calendarr/data/SettingsStore.kt

@@ -34,6 +34,13 @@ class SettingsStore @Inject constructor(
         language = prefs.getString(K_LANGUAGE, null) ?: "de",
         monthDividerColor = prefs.getString(K_DIVIDER, null) ?: "#7090c0",
         monthLabelColor = prefs.getString(K_LABEL, null) ?: "#7090c0",
+        textColor = prefs.getString(K_TEXT_COLOR, null) ?: "#FFFFFF",
+        backgroundColor = prefs.getString(K_BG_COLOR, null) ?: "#000000",
+        lineColor = prefs.getString(K_LINE_COLOR, null) ?: "#3A3A52",
+        defaultReminderMinutes = prefs.getInt(K_DEFAULT_REMINDER, -1).takeIf { it >= 0 },
+        defaultEventDurationMinutes = prefs.getInt(K_DEFAULT_DURATION, 60),
+        cacheMonths = prefs.getInt(K_CACHE_MONTHS, 3),
+        monthViewPaged = prefs.getBoolean(K_MONTH_PAGED, false),
     )
 
     fun saveSettings(s: AppSettings) {
@@ -50,14 +57,127 @@ class SettingsStore @Inject constructor(
             .putString(K_LANGUAGE, s.language)
             .putString(K_DIVIDER, s.monthDividerColor)
             .putString(K_LABEL, s.monthLabelColor)
+            .putString(K_TEXT_COLOR, s.textColor)
+            .putString(K_BG_COLOR, s.backgroundColor)
+            .putString(K_LINE_COLOR, s.lineColor)
+            .putInt(K_DEFAULT_REMINDER, s.defaultReminderMinutes ?: -1)
+            .putInt(K_DEFAULT_DURATION, s.defaultEventDurationMinutes)
+            .putInt(K_CACHE_MONTHS, s.cacheMonths)
+            .putBoolean(K_MONTH_PAGED, s.monthViewPaged)
             .apply()
     }
 
+    // --- Per-setting cross-device sync flags (account-wide; server is authority) ---
+
+    /** Keys this Android client can sync. Excludes language (device "system" has
+     *  no server value) and text/line contrast (iOS-style opacity, device-local). */
+    val syncableKeys: List<String> = listOf(
+        "default_view", "week_start_day", "dim_past_events", "hour_height",
+        "default_event_duration_minutes", "default_reminder_minutes",
+        "primary_color", "accent_color", "today_color",
+        "text_color", "bg_color", "line_color",
+        "month_divider_color", "month_label_color",
+        "cache_months", "month_view_paged",
+    )
+
+    private val defaultSync: Map<String, Boolean> = syncableKeys.associateWith { key ->
+        key != "cache_months" && key != "month_view_paged"
+    }
+
+    fun loadSyncFlags(): Map<String, Boolean> {
+        val result = defaultSync.toMutableMap()
+        val raw = prefs.getString(K_SYNC_FLAGS, null)
+        if (!raw.isNullOrBlank()) {
+            runCatching { org.json.JSONObject(raw) }.getOrNull()?.let { obj ->
+                for (key in syncableKeys) if (obj.has(key)) result[key] = obj.getBoolean(key)
+            }
+        }
+        return result
+    }
+
+    private fun writeSyncFlags(f: Map<String, Boolean>) {
+        prefs.edit().putString(K_SYNC_FLAGS, org.json.JSONObject(f as Map<*, *>).toString()).apply()
+    }
+
+    fun storeServerFlags(server: Map<String, Boolean>?) {
+        if (server == null) return
+        val f = loadSyncFlags().toMutableMap()
+        for (key in syncableKeys) server[key]?.let { f[key] = it }
+        writeSyncFlags(f)
+    }
+
+    fun setSyncFlag(key: String, on: Boolean) {
+        val f = loadSyncFlags().toMutableMap(); f[key] = on; writeSyncFlags(f)
+    }
+
+    fun setAllSyncFlags(on: Boolean) {
+        val f = loadSyncFlags().toMutableMap(); for (key in syncableKeys) f[key] = on; writeSyncFlags(f)
+    }
+
+    /** Merge a server snapshot with local values honouring the (refreshed) flags:
+     *  synced keys take the server value, others keep the local value. Persists
+     *  the result and returns the effective settings. */
+    fun applyServerPull(server: AppSettings): AppSettings {
+        storeServerFlags(server.syncFlags)
+        val flags = loadSyncFlags()
+        val local = loadSettings()
+        fun on(key: String) = flags[key] == true
+        val eff = local.copy(
+            defaultView = if (on("default_view")) server.defaultView else local.defaultView,
+            weekStartDay = if (on("week_start_day")) server.weekStartDay else local.weekStartDay,
+            dimPastEvents = if (on("dim_past_events")) server.dimPastEvents else local.dimPastEvents,
+            hourHeight = if (on("hour_height")) server.hourHeight else local.hourHeight,
+            defaultEventDurationMinutes = if (on("default_event_duration_minutes")) server.defaultEventDurationMinutes else local.defaultEventDurationMinutes,
+            defaultReminderMinutes = if (on("default_reminder_minutes")) server.defaultReminderMinutes else local.defaultReminderMinutes,
+            primaryColor = if (on("primary_color")) server.primaryColor else local.primaryColor,
+            accentColor = if (on("accent_color")) server.accentColor else local.accentColor,
+            todayColor = if (on("today_color")) server.todayColor else local.todayColor,
+            textColor = if (on("text_color")) server.textColor else local.textColor,
+            backgroundColor = if (on("bg_color")) server.backgroundColor else local.backgroundColor,
+            lineColor = if (on("line_color")) server.lineColor else local.lineColor,
+            monthDividerColor = if (on("month_divider_color")) server.monthDividerColor else local.monthDividerColor,
+            monthLabelColor = if (on("month_label_color")) server.monthLabelColor else local.monthLabelColor,
+            cacheMonths = if (on("cache_months")) server.cacheMonths else local.cacheMonths,
+            monthViewPaged = if (on("month_view_paged")) server.monthViewPaged else local.monthViewPaged,
+            // Device-local (never synced): language + contrast levels.
+            language = local.language,
+            textContrast = local.textContrast,
+            lineContrast = local.lineContrast,
+        )
+        saveSettings(eff)
+        return eff
+    }
+
     /** Device-local cache range in months around today (default 3). */
     var cacheMonths: Int
         get() = prefs.getInt(K_CACHE_MONTHS, 3)
         set(value) = prefs.edit().putInt(K_CACHE_MONTHS, value).apply()
 
+    /** Device-local: month view as horizontal paged (swipe) instead of the
+     *  continuous vertical scroll feed (default false = scroll). */
+    var monthViewPaged: Boolean
+        get() = prefs.getBoolean(K_MONTH_PAGED, false)
+        set(value) = prefs.edit().putBoolean(K_MONTH_PAGED, value).apply()
+
+    /** Device-local: hide the top-bar menu button (drawer opens via edge-swipe). */
+    var hideMenuButton: Boolean
+        get() = prefs.getBoolean(K_HIDE_MENU, false)
+        set(value) = prefs.edit().putBoolean(K_HIDE_MENU, value).apply()
+
+    /** Whether this device mirrors its Contacts birthdays into the birthday calendar. */
+    var birthdaysSyncEnabled: Boolean
+        get() = prefs.getBoolean(K_BDAY_ENABLED, false)
+        set(value) = prefs.edit().putBoolean(K_BDAY_ENABLED, value).apply()
+
+    /** Stable per-install id used to scope this device's contact-birthday rows. */
+    val birthdaysDeviceId: String
+        get() {
+            prefs.getString(K_BDAY_DEVICE, null)?.let { return it }
+            val id = java.util.UUID.randomUUID().toString()
+            prefs.edit().putString(K_BDAY_DEVICE, id).apply()
+            return id
+        }
+
     // --- Hidden calendars ("source:id") ---
 
     var hiddenCalendarKeys: Set<String>
@@ -70,6 +190,27 @@ class SettingsStore @Inject constructor(
         get() = prefs.getStringSet(K_BANISHED, emptySet())?.toSet() ?: emptySet()
         set(value) = prefs.edit().putStringSet(K_BANISHED, value).apply()
 
+    // --- Reminder-disabled calendars ("source:id") ---
+    // Mirrors the server's per-calendar `reminders_enabled` flag so the
+    // notification scheduler can skip muted calendars without deleting any
+    // event reminders.
+
+    var reminderDisabledCalendarKeys: Set<String>
+        get() = prefs.getStringSet(K_REMINDER_DISABLED, emptySet())?.toSet() ?: emptySet()
+        set(value) = prefs.edit().putStringSet(K_REMINDER_DISABLED, value).apply()
+
+    // --- Calendar display order ("source:id" keys), device-local (mirrors web cal_order) ---
+
+    var calendarOrder: List<String>
+        get() {
+            val raw = prefs.getString(K_CAL_ORDER, null) ?: return emptyList()
+            return runCatching {
+                val arr = org.json.JSONArray(raw)
+                (0 until arr.length()).map { arr.getString(it) }
+            }.getOrDefault(emptyList())
+        }
+        set(value) = prefs.edit().putString(K_CAL_ORDER, org.json.JSONArray(value).toString()).apply()
+
     private companion object {
         const val K_DEFAULT_VIEW = "default_view"
         const val K_WEEK_START = "week_start_day"
@@ -83,8 +224,20 @@ class SettingsStore @Inject constructor(
         const val K_LANGUAGE = "language"
         const val K_DIVIDER = "month_divider_color"
         const val K_LABEL = "month_label_color"
+        const val K_TEXT_COLOR = "text_color"
+        const val K_BG_COLOR = "bg_color"
+        const val K_LINE_COLOR = "line_color"
+        const val K_SYNC_FLAGS = "sync_flags"
+        const val K_DEFAULT_REMINDER = "default_reminder_minutes"
+        const val K_DEFAULT_DURATION = "default_event_duration_minutes"
         const val K_CACHE_MONTHS = "cache_months"
+        const val K_MONTH_PAGED = "month_view_paged"
+        const val K_HIDE_MENU = "hide_menu_button"
+        const val K_BDAY_ENABLED = "birthdays_sync_enabled"
+        const val K_BDAY_DEVICE = "birthdays_device_id"
         const val K_HIDDEN = "hidden_calendar_keys"
         const val K_BANISHED = "banished_calendar_keys"
+        const val K_REMINDER_DISABLED = "reminder_disabled_calendar_keys"
+        const val K_CAL_ORDER = "calendar_order"
     }
 }

app/src/main/java/com/scarriffle/calendarr/data/remote/CalendarrApi.kt

@@ -155,6 +155,11 @@ interface CalendarrApi {
     @PUT("api/local/calendars/{id}")
     suspend fun updateLocalCalendar(@Path("id") id: Int, @Body body: RequestBody): Response<ResponseBody>
 
+    // Colour-only update that works for owners AND share recipients (recipients
+    // get their own per-user colour; owners change the calendar's colour).
+    @PUT("api/local/calendars/{id}/color")
+    suspend fun setLocalCalendarColor(@Path("id") id: Int, @Body body: RequestBody): Response<ResponseBody>
+
     @DELETE("api/local/calendars/{id}")
     suspend fun deleteLocalCalendar(@Path("id") id: Int): Response<ResponseBody>
 
@@ -217,6 +222,12 @@ interface CalendarrApi {
     @DELETE("api/local/events/{uid}")
     suspend fun deleteLocalEvent(@Path("uid") uid: String): Response<ResponseBody>
 
+    @GET("api/local/calendars/{id}/birthdays")
+    suspend fun getBirthdays(@Path("id") id: Int): List<com.scarriffle.calendarr.domain.model.BirthdayEntry>
+
+    @POST("api/birthdays/sync-report")
+    suspend fun reportBirthdaySync(@Body body: RequestBody): Response<ResponseBody>
+
     @POST("api/caldav/events")
     suspend fun createCalDAVEvent(@Body body: RequestBody): Response<ResponseBody>
 

app/src/main/java/com/scarriffle/calendarr/domain/model/Accounts.kt

@@ -21,6 +21,7 @@ data class CalDAVCalendar(
     val color: String? = null,
     val enabled: Boolean = true,
     @Json(name = "sidebar_hidden") val sidebarHidden: Boolean = false,
+    @Json(name = "reminders_enabled") val remindersEnabled: Boolean = true,
 )
 
 @JsonClass(generateAdapter = false)
@@ -34,6 +35,9 @@ data class LocalCalendar(
     @Json(name = "shared_by") val sharedBy: String? = null,
     val permission: String? = null,
     val group: Boolean = false,
+    @Json(name = "reminders_enabled") val remindersEnabled: Boolean = true,
+    @Json(name = "is_birthday") val isBirthday: Boolean = false,
+    @Json(name = "birthday_notify_days_before") val birthdayNotifyDaysBefore: Int? = null,
 )
 
 @JsonClass(generateAdapter = false)
@@ -45,6 +49,7 @@ data class ICalSubscription(
     val enabled: Boolean = true,
     @Json(name = "refresh_minutes") val refreshMinutes: Int = 60,
     @Json(name = "last_fetched") val lastFetched: String? = null,
+    @Json(name = "reminders_enabled") val remindersEnabled: Boolean = true,
 )
 
 @JsonClass(generateAdapter = false)
@@ -61,6 +66,7 @@ data class GoogleCalendar(
     val color: String? = null,
     val enabled: Boolean = true,
     @Json(name = "sidebar_hidden") val sidebarHidden: Boolean = false,
+    @Json(name = "reminders_enabled") val remindersEnabled: Boolean = true,
 )
 
 @JsonClass(generateAdapter = false)
@@ -80,6 +86,7 @@ data class HACalendar(
     val color: String? = null,
     val enabled: Boolean = true,
     @Json(name = "sidebar_hidden") val sidebarHidden: Boolean = false,
+    @Json(name = "reminders_enabled") val remindersEnabled: Boolean = true,
 )
 
 @JsonClass(generateAdapter = false)
@@ -91,6 +98,19 @@ data class UserProfile(
     @Json(name = "is_admin") val isAdmin: Boolean = false,
     @Json(name = "has_avatar") val hasAvatar: Boolean = false,
     @Json(name = "totp_enabled") val totpEnabled: Boolean = false,
+    @Json(name = "directory_hidden") val directoryHidden: Boolean = false,
+)
+
+/** One stored birthday (GET /api/local/calendars/{id}/birthdays). Contact-sourced
+ *  rows carry an external_uid ("contact:<deviceId>:<contactId>"); manual ones null. */
+@JsonClass(generateAdapter = false)
+data class BirthdayEntry(
+    val uid: String,
+    @Json(name = "external_uid") val externalUid: String? = null,
+    val title: String = "",
+    val month: Int? = null,
+    val day: Int? = null,
+    @Json(name = "birth_year") val birthYear: Int? = null,
 )
 
 /** A calendar the user can create events in (resolved from all writable sources). */

app/src/main/java/com/scarriffle/calendarr/domain/model/AppSettings.kt

@@ -22,9 +22,23 @@ data class AppSettings(
     @Json(name = "language") val language: String = "de",
     @Json(name = "month_divider_color") val monthDividerColor: String = "#7090c0",
     @Json(name = "month_label_color") val monthLabelColor: String = "#7090c0",
+    // Text / background / line colours drive the Material theme (onBackground,
+    // background, outline) so the whole app follows them, matching web/iOS.
+    @Json(name = "text_color") val textColor: String = "#FFFFFF",
+    @Json(name = "bg_color") val backgroundColor: String = "#000000",
+    @Json(name = "line_color") val lineColor: String = "#3A3A52",
     // How this user's private events appear to other group members: 'hidden' | 'busy'.
     @Json(name = "private_event_visibility") val privateEventVisibility: String = "busy",
     @Json(name = "group_visible_calendar_id") val groupVisibleCalendarId: Int? = null,
+    // Minutes-before-start applied to all events client-side; null = off.
+    @Json(name = "default_reminder_minutes") val defaultReminderMinutes: Int? = null,
+    // Duration (minutes) applied to a newly created event's end time.
+    @Json(name = "default_event_duration_minutes") val defaultEventDurationMinutes: Int = 60,
+    // Preload range in months (device-local by default) and month-view paging.
+    @Json(name = "cache_months") val cacheMonths: Int = 3,
+    @Json(name = "month_view_paged") val monthViewPaged: Boolean = false,
+    // Account-wide per-setting sync flags, fully resolved by the server.
+    @Json(name = "sync_flags") val syncFlags: Map<String, Boolean>? = null,
 ) {
     val weekStartsOnMonday: Boolean get() = weekStartDay != "sunday"
 }

app/src/main/java/com/scarriffle/calendarr/domain/model/CalEvent.kt

@@ -31,7 +31,23 @@ data class CalEvent(
     val owner: EventPerson? = null,
     val isGroupEvent: Boolean = false,
     val displayColor: String? = null,
+    // Server-decorated title for the group combined view (group icon / owner
+    // prefix); rendered in group mode while `title` stays raw for editing.
+    val displayTitle: String? = null,
+    // Reminder offsets in minutes-before-start (0 = at start). Local events only.
+    val reminders: List<Int> = emptyList(),
+    // True for events from a calendar shared with the user read-only.
+    val readOnly: Boolean = false,
+    // True for events from a birthday calendar — clients show a cake icon and
+    // the server bakes the age into `displayTitle`.
+    val isBirthday: Boolean = false,
 ) {
+    /**
+     * Title to render: the server-decorated one (birthday age, group prefix)
+     * wins over the raw title, which is kept for editing.
+     */
+    val renderTitle: String
+        get() = displayTitle?.takeIf { it.isNotBlank() } ?: title
     /**
      * Group view supplies a server-resolved colour (display_color); otherwise
      * per-event override colour, then the calendar's colour, then a stable
@@ -117,6 +133,12 @@ data class CalEvent(
                 owner = personFrom(json, "owner"),
                 isGroupEvent = json.optBoolean("is_group_event", false),
                 displayColor = json.strOrNull("display_color"),
+                displayTitle = json.strOrNull("display_title"),
+                reminders = json.optJSONArray("reminders")?.let { arr ->
+                    (0 until arr.length()).mapNotNull { (arr.opt(it) as? Number)?.toInt() }
+                } ?: emptyList(),
+                readOnly = json.optBoolean("read_only", false),
+                isBirthday = json.optBoolean("is_birthday", false),
             )
         }
     }

app/src/main/java/com/scarriffle/calendarr/domain/model/ReminderOptions.kt

@@ -0,0 +1,29 @@
+package com.scarriffle.calendarr.domain.model
+
+/**
+ * Reminder offsets are stored as minutes-before-start integers (0 = at start).
+ * A few quick presets are offered; anything else is entered as a custom
+ * number + unit. Mirrors the iOS `ReminderOptions`.
+ */
+object ReminderOptions {
+    /** Quick presets: at start, 30 min, 1 day. */
+    val presets = listOf(0, 30, 1440)
+
+    /** Default for a freshly-switched custom row (deliberately not a preset). */
+    const val customDefault = 120
+
+    enum class Unit(val mult: Int, val labelKey: String) {
+        MINUTES(1, "event.reminder_unit.minutes"),
+        HOURS(60, "event.reminder_unit.hours"),
+        DAYS(1440, "event.reminder_unit.days"),
+        WEEKS(10080, "event.reminder_unit.weeks"),
+    }
+
+    /** Split a minutes value into the largest exact {value, unit} for the custom picker. */
+    fun split(minutes: Int): Pair<Int, Unit> {
+        for (u in Unit.values().reversed()) {
+            if (minutes > 0 && minutes % u.mult == 0) return (minutes / u.mult) to u
+        }
+        return maxOf(1, minutes) to Unit.MINUTES
+    }
+}

app/src/main/java/com/scarriffle/calendarr/notifications/NotificationScheduler.kt

@@ -0,0 +1,111 @@
+package com.scarriffle.calendarr.notifications
+
+import android.app.AlarmManager
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import com.scarriffle.calendarr.domain.model.CalEvent
+import com.scarriffle.calendarr.ui.calendar.calendarKey
+
+/**
+ * Schedules OS reminder notifications for upcoming events via AlarmManager.
+ * Per-event reminders take precedence; otherwise the user's default reminder
+ * applies. Calendars the user muted (`disabledKeys`) are skipped — their
+ * reminders are kept on the events, just never fired. Mirrors the iOS
+ * `NotificationScheduler`.
+ */
+object NotificationScheduler {
+    const val CHANNEL_ID = "calendarr_reminders"
+    const val EXTRA_TITLE = "title"
+    const val EXTRA_BODY = "body"
+    const val EXTRA_ID = "id"
+
+    private const val PREFS = "calendarr_reminders_sched"
+    private const val KEY_COUNT = "scheduled_count"
+    private const val MAX = 50  // keep the alarm count bounded
+
+    fun ensureChannel(context: Context) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val mgr = context.getSystemService(NotificationManager::class.java)
+            if (mgr.getNotificationChannel(CHANNEL_ID) == null) {
+                mgr.createNotificationChannel(
+                    NotificationChannel(CHANNEL_ID, "Reminders", NotificationManager.IMPORTANCE_HIGH)
+                )
+            }
+        }
+    }
+
+    private data class Pending(val fire: Long, val title: String, val body: String)
+
+    fun reschedule(
+        context: Context,
+        events: List<CalEvent>,
+        disabledKeys: Set<String>,
+        defaultMinutes: Int,
+    ) {
+        ensureChannel(context)
+        val am = context.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+        val now = System.currentTimeMillis()
+
+        val pending = mutableListOf<Pending>()
+        for (ev in events) {
+            if (disabledKeys.contains(calendarKey(ev.source, ev.calendarId))) continue
+            val offsets = if (ev.reminders.isEmpty()) {
+                if (defaultMinutes >= 0) listOf(defaultMinutes) else emptyList()
+            } else ev.reminders
+            for (m in offsets) {
+                val fire = ev.startDate.toEpochMilli() - m * 60_000L
+                if (fire > now) {
+                    val rel  = relativeText(m)
+                    val body = if (ev.location.isNotBlank()) "$rel · ${ev.location}" else rel
+                    pending.add(Pending(fire, ev.title, body))
+                }
+            }
+        }
+        pending.sortBy { it.fire }
+        val limited = pending.take(MAX)
+
+        val prefs = context.getSharedPreferences(PREFS, Context.MODE_PRIVATE)
+        val lastCount = prefs.getInt(KEY_COUNT, 0)
+        // Cancel every alarm from the previous run (extras are ignored when
+        // matching a PendingIntent, so a bare intent with the same code cancels).
+        for (i in 0 until maxOf(lastCount, limited.size)) {
+            am.cancel(intentFor(context, i, null))
+        }
+        limited.forEachIndexed { i, p ->
+            val pi = intentFor(context, i, p)
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+                am.setAndAllowWhileIdle(AlarmManager.RTC_WAKEUP, p.fire, pi)
+            } else {
+                am.set(AlarmManager.RTC_WAKEUP, p.fire, pi)
+            }
+        }
+        prefs.edit().putInt(KEY_COUNT, limited.size).apply()
+    }
+
+    private fun relativeText(minutes: Int): String = when {
+        minutes < 60   -> "in $minutes Min."
+        minutes == 60  -> "in 1 Std."
+        minutes < 1440 -> "in ${minutes / 60} Std."
+        minutes == 1440 -> "morgen"
+        else            -> "in ${minutes / 1440} Tagen"
+    }
+
+    private fun intentFor(context: Context, code: Int, p: Pending?): PendingIntent {
+        val intent = Intent(context, ReminderReceiver::class.java).apply {
+            // Distinct action per code so PendingIntents don't collapse together.
+            action = "com.scarriffle.calendarr.REMINDER_$code"
+            if (p != null) {
+                putExtra(EXTRA_ID, code)
+                putExtra(EXTRA_TITLE, p.title)
+                putExtra(EXTRA_BODY, p.body)
+            }
+        }
+        var flags = PendingIntent.FLAG_UPDATE_CURRENT
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) flags = flags or PendingIntent.FLAG_IMMUTABLE
+        return PendingIntent.getBroadcast(context, code, intent, flags)
+    }
+}

app/src/main/java/com/scarriffle/calendarr/notifications/ReminderReceiver.kt

@@ -0,0 +1,33 @@
+package com.scarriffle.calendarr.notifications
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
+import com.scarriffle.calendarr.R
+
+/** Posts the reminder notification when an AlarmManager alarm fires. */
+class ReminderReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        NotificationScheduler.ensureChannel(context)
+        val title = intent.getStringExtra(NotificationScheduler.EXTRA_TITLE) ?: return
+        val body = intent.getStringExtra(NotificationScheduler.EXTRA_BODY) ?: ""
+        val id = intent.getIntExtra(NotificationScheduler.EXTRA_ID, 0)
+
+        val notification = NotificationCompat.Builder(context, NotificationScheduler.CHANNEL_ID)
+            .setSmallIcon(R.mipmap.ic_launcher)
+            .setContentTitle(title)
+            .setContentText(body)
+            .setAutoCancel(true)
+            .setPriority(NotificationCompat.PRIORITY_HIGH)
+            .build()
+
+        // notify() is a no-op (and may throw on some OEMs) without the runtime
+        // POST_NOTIFICATIONS permission; ignore that case.
+        try {
+            NotificationManagerCompat.from(context).notify(id, notification)
+        } catch (_: SecurityException) {
+        }
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/CalendarrRoot.kt

@@ -1,6 +1,8 @@
 package com.scarriffle.calendarr.ui
 
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.systemBarsPadding
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
 import androidx.compose.runtime.Composable
@@ -48,19 +50,29 @@ fun CalendarrRoot(vm: MainViewModel = hiltViewModel()) {
                 }
 
                 when (route) {
-                    AppRoute.SETUP -> ServerSetupScreen(onConfigured = vm::onServerConfigured)
-                    AppRoute.LOGIN -> LoginScreen(
-                        serverUrl = vm.serverUrl,
-                        onLoggedIn = vm::onLoggedIn,
-                        onBack = vm::switchServer,
-                    )
-                    AppRoute.MAIN -> CalendarScreen(
-                        vm = calendarVm!!,
-                        onLogout = vm::logout,
-                        onSwitchServer = vm::switchServer,
-                        onSettingsChanged = vm::applyLocalSettings,
-                        onSettingsSynced = vm::refreshSettings,
-                    )
+                    // Auth screens draw full-screen; inset them from the system
+                    // bars (edge-to-edge) so their content isn't under status/nav.
+                    AppRoute.SETUP -> Box(Modifier.systemBarsPadding()) {
+                        ServerSetupScreen(onConfigured = vm::onServerConfigured)
+                    }
+                    AppRoute.LOGIN -> Box(Modifier.systemBarsPadding()) {
+                        LoginScreen(
+                            serverUrl = vm.serverUrl,
+                            onLoggedIn = vm::onLoggedIn,
+                            onBack = vm::switchServer,
+                        )
+                    }
+                    AppRoute.MAIN -> calendarVm?.let { cvm ->
+                        CalendarScreen(
+                            vm = cvm,
+                            onLogout = vm::logout,
+                            onSwitchServer = vm::switchServer,
+                            onSettingsChanged = vm::applyLocalSettings,
+                            onSettingsSynced = vm::refreshSettings,
+                            username = vm.username,
+                            serverUrl = vm.serverUrl,
+                        )
+                    } ?: SplashScreen()
                 }
             }
         }

app/src/main/java/com/scarriffle/calendarr/ui/L10n.kt

@@ -38,6 +38,9 @@ object L10n {
             "cal.no_events_title" to "Keine Termine",
             "cal.no_events_body" to "In den nächsten 90 Tagen sind keine Termine vorhanden.",
             "cal.loading_more" to "Lade weitere Wochen…", "cal.new_event" to "Neues Ereignis",
+            "cal.show_in_day_view" to "In Tagesansicht öffnen",
+            "cal.show_in_week_view" to "In Wochenansicht öffnen",
+            "cal.no_events_day" to "Keine Termine an diesem Tag",
             "menu.section.settings" to "Einstellungen", "menu.profile" to "Profil",
             "menu.appearance" to "Darstellung", "menu.accounts" to "Konten & Kalender",
             "menu.server" to "Server", "menu.logout" to "Abmelden", "menu.admin" to "Admin",
@@ -52,6 +55,25 @@ object L10n {
             "settings.colors" to "Farben", "settings.color.primary" to "Primärfarbe",
             "settings.color.accent" to "Akzentfarbe", "settings.color.today" to "Heutige-Tag-Farbe",
             "settings.color.divider" to "Monatswechsel-Linie", "settings.color.label" to "Monatskürzel",
+            "settings.color.text" to "Schriftfarbe", "settings.color.background" to "Hintergrundfarbe",
+            "settings.color.line" to "Linienfarbe",
+            "settings.sync_all" to "Alle synchronisieren",
+            "settings.sync_all.desc" to "Diese Einstellungen zwischen deinen Geräten teilen",
+            "settings.sync_this" to "Zwischen Geräten synchronisieren",
+            "settings.reset" to "Zurücksetzen",
+            "settings.appearance" to "Ansicht",
+            "settings.device" to "Nur auf diesem Gerät",
+            "settings.more" to "Mehr",
+            "settings.hide_menu_button" to "Menü-Button ausblenden",
+            "settings.month_mode" to "Monatswechsel",
+            "settings.month_mode.scroll" to "Fortlaufend scrollen",
+            "settings.month_mode.paged" to "Seitenweise blättern",
+            "settings.device.footer" to "Diese Einstellungen gelten nur auf diesem Gerät und werden nicht synchronisiert.",
+            "settings.directory_hidden" to "Profil verbergen",
+            "settings.directory_hidden.desc" to "Nicht in der Teilen-/Gruppen-Auswahl anderer Nutzer erscheinen.",
+            "settings.defaultreminder" to "Standard-Erinnerung",
+            "reminder.off" to "Aus", "reminder.at_start" to "Zur Startzeit",
+            "reminder.1d" to "1 Tag vorher", "reminder.1w" to "1 Woche vorher",
             "settings.textcontrast" to "Schriftkontrast", "settings.linecontrast" to "Linienkontrast",
             "settings.contrast.dark" to "Dunkel", "settings.contrast.medium" to "Mittel",
             "settings.contrast.bright" to "Hell", "settings.contrast.max" to "Maximum",
@@ -60,6 +82,7 @@ object L10n {
             "settings.calview" to "Kalenderansicht", "settings.defaultview" to "Standardansicht",
             "settings.firstweekday" to "Erster Wochentag", "settings.monday" to "Montag",
             "settings.sunday" to "Sonntag", "settings.dimpast" to "Vergangene Termine ausgrauen",
+            "settings.month_paged" to "Monatsansicht seitenweise wischen",
             "settings.hourheight" to "Stundenhöhe",
             "settings.hourheight.compact" to "Kompakt", "settings.hourheight.normal" to "Normal",
             "settings.hourheight.comfort" to "Komfort", "settings.hourheight.large" to "Gross",
@@ -98,6 +121,14 @@ object L10n {
             "event.detail_title" to "Termin", "event.source" to "Quelle",
             "event.save" to "Sichern", "event.add" to "Hinzufügen",
             "event.delete_confirm" to "Diesen Termin löschen?",
+            "event.reminders" to "Benachrichtigungen", "event.reminder_add" to "Benachrichtigung hinzufügen",
+            "event.reminder_custom" to "Benutzerdefiniert…", "event.reminder_at_start" to "Zur Startzeit",
+            "event.reminder_before" to "vorher",
+            "event.reminder_unit.minutes" to "Minuten", "event.reminder_unit.hours" to "Stunden",
+            "event.reminder_unit.days" to "Tage", "event.reminder_unit.weeks" to "Wochen",
+            "event.reminders_disabled" to "Für diesen Kalender sind Benachrichtigungen deaktiviert – Erinnerungen werden nicht ausgeführt.",
+            "settings.default_duration" to "Standard-Termindauer",
+            "filter.reminders_on" to "Benachrichtigungen aktivieren", "filter.reminders_off" to "Benachrichtigungen deaktivieren",
             "accounts.title" to "Konten", "accounts.loading" to "Lade Konten…",
             "accounts.caldav.header" to "CalDAV-Konten", "accounts.caldav.empty" to "Keine CalDAV-Konten",
             "accounts.caldav.add" to "CalDAV hinzufügen", "accounts.local.header" to "Lokale Kalender",
@@ -110,12 +141,35 @@ object L10n {
             "accounts.ha.add" to "Home Assistant hinzufügen",
             "filter.title" to "Kalender", "filter.empty" to "Keine Kalender vorhanden",
             "filter.show_all" to "Alle anzeigen", "filter.hide_all" to "Alle ausblenden",
+            "filter.sort" to "Sortieren", "filter.done" to "Fertig",
+            "filter.move_up" to "Nach oben", "filter.move_down" to "Nach unten",
             "filter.button" to "Kalender ein-/ausblenden",
+            "filter.sync_error" to "Synchronisierung fehlgeschlagen",
+            "filter.banish" to "Dauerhaft ausblenden",
+            "filter.read_only" to "Nur lesen",
+            "filter.banished_footer" to "Dauerhaft ausgeblendete Kalender erscheinen unter »Konten & Kalender« und können dort wieder eingeblendet werden.",
+            "accounts.banished_header" to "Ausgeblendete Kalender",
+            "accounts.banished_unhide" to "Wieder einblenden",
+            "accounts.banished_unknown" to "Unbekannter Kalender",
             "caldav.display_name" to "Anzeigename", "caldav.url" to "CalDAV-URL",
             "caldav.username" to "Benutzername", "caldav.password" to "Passwort",
             "caldav.color" to "Farbe", "caldav.connect" to "Verbinden", "caldav.title" to "CalDAV-Konto",
             "local.title" to "Lokaler Kalender", "local.name" to "Name", "local.color" to "Farbe",
             "local.create" to "Erstellen",
+            "birthday.new" to "Neuer Geburtstag", "birthday.new_title" to "Neuen Geburtstag hinzufügen",
+            "birthday.calendar_name" to "Geburtstage",
+            "birthday.activate" to "Geburtstagskalender aktivieren",
+            "birthday.import_contacts" to "Aus Kontakten importieren",
+            "birthday.activate_hint" to "Aktiviere den Geburtstagskalender, um Geburtstage anzulegen. Er erscheint als eigener Kalender in der Seitenleiste.",
+            "birthday.is_calendar" to "Geburtstagskalender",
+            "birthday.person" to "Name", "birthday.person_ph" to "Name der Person",
+            "birthday.date" to "Geburtstag", "birthday.year_unknown" to "Jahr unbekannt",
+            "birthday.target" to "Geburtstagskalender",
+            "birthday.no_calendars" to "Kein Geburtstagskalender vorhanden. Erstelle zuerst einen Kalender und aktiviere „Geburtstagskalender\".",
+            "birthday.notify" to "Erinnerung", "birthday.notify.off" to "Aus",
+            "birthday.notify.same_day" to "Am Tag", "birthday.notify.one_day" to "1 Tag vorher",
+            "birthday.notify.days" to "%d Tage vorher",
+            "birthday.created" to "Geburtstag „%s\" hinzugefügt",
             "ical.title" to "iCal abonnieren", "ical.name" to "Name", "ical.url" to "iCal-URL",
             "ical.color" to "Farbe", "ical.interval" to "Intervall", "ical.subscribe" to "Abonnieren",
             "ical.refresh.15m" to "Alle 15 Min.", "ical.refresh.30m" to "Alle 30 Min.",
@@ -165,6 +219,9 @@ object L10n {
             "cal.no_events_title" to "No events",
             "cal.no_events_body" to "No events in the next 90 days.",
             "cal.loading_more" to "Loading more weeks…", "cal.new_event" to "New event",
+            "cal.show_in_day_view" to "Open in day view",
+            "cal.show_in_week_view" to "Open in week view",
+            "cal.no_events_day" to "No events on this day",
             "menu.section.settings" to "Settings", "menu.profile" to "Profile",
             "menu.appearance" to "Appearance", "menu.accounts" to "Accounts & Calendars",
             "menu.server" to "Server", "menu.logout" to "Sign out", "menu.admin" to "Admin",
@@ -179,6 +236,25 @@ object L10n {
             "settings.colors" to "Colors", "settings.color.primary" to "Primary color",
             "settings.color.accent" to "Accent color", "settings.color.today" to "Today color",
             "settings.color.divider" to "Month divider line", "settings.color.label" to "Month abbreviation",
+            "settings.color.text" to "Text color", "settings.color.background" to "Background color",
+            "settings.color.line" to "Line color",
+            "settings.sync_all" to "Sync all",
+            "settings.sync_all.desc" to "Share these settings across your devices",
+            "settings.sync_this" to "Sync across devices",
+            "settings.reset" to "Reset",
+            "settings.appearance" to "View",
+            "settings.device" to "This device only",
+            "settings.more" to "More",
+            "settings.hide_menu_button" to "Hide menu button",
+            "settings.month_mode" to "Month switching",
+            "settings.month_mode.scroll" to "Continuous scroll",
+            "settings.month_mode.paged" to "Page by page",
+            "settings.device.footer" to "These settings apply to this device only and are not synced.",
+            "settings.directory_hidden" to "Hide profile",
+            "settings.directory_hidden.desc" to "Don't appear in other users' share/group pickers.",
+            "settings.defaultreminder" to "Default reminder",
+            "reminder.off" to "Off", "reminder.at_start" to "At start time",
+            "reminder.1d" to "1 day before", "reminder.1w" to "1 week before",
             "settings.textcontrast" to "Text contrast", "settings.linecontrast" to "Line contrast",
             "settings.contrast.dark" to "Dark", "settings.contrast.medium" to "Medium",
             "settings.contrast.bright" to "Bright", "settings.contrast.max" to "Maximum",
@@ -187,6 +263,7 @@ object L10n {
             "settings.calview" to "Calendar view", "settings.defaultview" to "Default view",
             "settings.firstweekday" to "First day of week", "settings.monday" to "Monday",
             "settings.sunday" to "Sunday", "settings.dimpast" to "Dim past events",
+            "settings.month_paged" to "Swipe month view as pages",
             "settings.hourheight" to "Hour height",
             "settings.hourheight.compact" to "Compact", "settings.hourheight.normal" to "Normal",
             "settings.hourheight.comfort" to "Comfort", "settings.hourheight.large" to "Large",
@@ -225,6 +302,14 @@ object L10n {
             "event.detail_title" to "Event", "event.source" to "Source",
             "event.save" to "Save", "event.add" to "Add",
             "event.delete_confirm" to "Delete this event?",
+            "event.reminders" to "Reminders", "event.reminder_add" to "Add reminder",
+            "event.reminder_custom" to "Custom…", "event.reminder_at_start" to "At start time",
+            "event.reminder_before" to "before",
+            "event.reminder_unit.minutes" to "minutes", "event.reminder_unit.hours" to "hours",
+            "event.reminder_unit.days" to "days", "event.reminder_unit.weeks" to "weeks",
+            "event.reminders_disabled" to "Reminders are disabled for this calendar – they will not fire.",
+            "settings.default_duration" to "Default event duration",
+            "filter.reminders_on" to "Enable reminders", "filter.reminders_off" to "Disable reminders",
             "accounts.title" to "Accounts", "accounts.loading" to "Loading accounts…",
             "accounts.caldav.header" to "CalDAV accounts", "accounts.caldav.empty" to "No CalDAV accounts",
             "accounts.caldav.add" to "Add CalDAV", "accounts.local.header" to "Local calendars",
@@ -237,12 +322,35 @@ object L10n {
             "accounts.ha.add" to "Add Home Assistant",
             "filter.title" to "Calendars", "filter.empty" to "No calendars available",
             "filter.show_all" to "Show all", "filter.hide_all" to "Hide all",
+            "filter.sort" to "Sort", "filter.done" to "Done",
+            "filter.move_up" to "Move up", "filter.move_down" to "Move down",
             "filter.button" to "Show/hide calendars",
+            "filter.sync_error" to "Sync failed",
+            "filter.banish" to "Hide permanently",
+            "filter.read_only" to "Read-only",
+            "filter.banished_footer" to "Permanently hidden calendars appear under “Accounts & Calendars”, where you can show them again.",
+            "accounts.banished_header" to "Hidden calendars",
+            "accounts.banished_unhide" to "Show again",
+            "accounts.banished_unknown" to "Unknown calendar",
             "caldav.display_name" to "Display name", "caldav.url" to "CalDAV URL",
             "caldav.username" to "Username", "caldav.password" to "Password",
             "caldav.color" to "Color", "caldav.connect" to "Connect", "caldav.title" to "CalDAV account",
             "local.title" to "Local calendar", "local.name" to "Name", "local.color" to "Color",
             "local.create" to "Create",
+            "birthday.new" to "New birthday", "birthday.new_title" to "Add new birthday",
+            "birthday.calendar_name" to "Birthdays",
+            "birthday.activate" to "Enable birthday calendar",
+            "birthday.import_contacts" to "Import from contacts",
+            "birthday.activate_hint" to "Enable the birthday calendar to add birthdays. It appears as its own calendar in the sidebar.",
+            "birthday.is_calendar" to "Birthday calendar",
+            "birthday.person" to "Name", "birthday.person_ph" to "Person's name",
+            "birthday.date" to "Birthday", "birthday.year_unknown" to "Year unknown",
+            "birthday.target" to "Birthday calendar",
+            "birthday.no_calendars" to "No birthday calendar yet. Create a calendar and enable \"Birthday calendar\" first.",
+            "birthday.notify" to "Reminder", "birthday.notify.off" to "Off",
+            "birthday.notify.same_day" to "On the day", "birthday.notify.one_day" to "1 day before",
+            "birthday.notify.days" to "%d days before",
+            "birthday.created" to "Birthday \"%s\" added",
             "ical.title" to "Subscribe to iCal", "ical.name" to "Name", "ical.url" to "iCal URL",
             "ical.color" to "Color", "ical.interval" to "Interval", "ical.subscribe" to "Subscribe",
             "ical.refresh.15m" to "Every 15 min", "ical.refresh.30m" to "Every 30 min",

app/src/main/java/com/scarriffle/calendarr/ui/MainViewModel.kt

@@ -62,12 +62,12 @@ class MainViewModel @Inject constructor(
         _route.value = computeRoute()
     }
 
-    /** Pull appearance settings from the server, caching them locally. */
+    /** Pull settings from the server and merge them with local values honouring
+     *  each setting's sync flag (synced keys take the server value). */
     fun refreshSettings() {
         viewModelScope.launch {
             runCatching { repository.getSettings() }.onSuccess { s ->
-                settingsStore.saveSettings(s)
-                _settings.value = s
+                _settings.value = settingsStore.applyServerPull(s)
             }
         }
     }

app/src/main/java/com/scarriffle/calendarr/ui/accounts/AccountsScreen.kt

@@ -11,6 +11,7 @@ import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.lazy.LazyColumn
@@ -116,6 +117,26 @@ fun AccountsScreen(
         }
     }
 
+    // Calendars permanently hidden ("banished") on the server — offered for
+    // re-enabling. Derived from the loaded account lists' sidebar_hidden flags.
+    val banishedCals: List<BanishedCalendar> = buildList {
+        vm.caldav.forEach { acc ->
+            acc.calendars.orEmpty().filter { it.sidebarHidden }.forEach {
+                add(BanishedCalendar("caldav", it.id, "${acc.name} – ${it.name}", it.color ?: acc.color))
+            }
+        }
+        vm.google.forEach { acc ->
+            acc.calendars.orEmpty().filter { it.sidebarHidden }.forEach {
+                add(BanishedCalendar("google", it.id, "${acc.email} – ${it.name}", it.color ?: "#4285f4"))
+            }
+        }
+        vm.homeAssistant.forEach { acc ->
+            acc.calendars.orEmpty().filter { it.sidebarHidden }.forEach {
+                add(BanishedCalendar("homeassistant", it.id, "${acc.name} – ${it.name}", it.color ?: "#46bdc6"))
+            }
+        }
+    }
+
     Surface(Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
         Scaffold(
             topBar = {
@@ -197,6 +218,14 @@ fun AccountsScreen(
                     }
                 }
 
+                // Banished (permanently hidden) calendars — re-enable here.
+                if (banishedCals.isNotEmpty()) {
+                    item { SectionHeaderNoAdd(tr("accounts.banished_header")) }
+                    items(banishedCals, key = { "b${it.source}${it.id}" }) { cal ->
+                        BanishedCalendarRow(cal.label, cal.color) { vm.unbanishCalendar(cal.source, cal.id, onChanged) }
+                    }
+                }
+
                 vm.error?.let { item { Text(it, color = MaterialTheme.colorScheme.error, modifier = Modifier.padding(vertical = 12.dp)) } }
                 item { Spacer(Modifier.size(40.dp)) }
             }
@@ -308,6 +337,26 @@ private fun ChildCalendarRow(name: String, color: String, onColor: () -> Unit) {
     }
 }
 
+/** A permanently-hidden ("banished") calendar with a "show again" button. */
+private data class BanishedCalendar(val source: String, val id: Int, val label: String, val color: String)
+
+@Composable
+private fun BanishedCalendarRow(name: String, color: String, onUnbanish: () -> Unit) {
+    Row(
+        Modifier.fillMaxWidth().padding(vertical = 6.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        ColorDot(color, editable = false, onClick = {})
+        Text(
+            name,
+            modifier = Modifier.weight(1f).padding(start = 12.dp),
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+        )
+        TextButton(onClick = onUnbanish) { Text(tr("accounts.banished_unhide")) }
+    }
+}
+
 /** A simple row (iCal) with editable colour + delete. */
 @Composable
 private fun EditableColorRow(name: String, color: String, onColor: () -> Unit, onDelete: () -> Unit) {
@@ -332,7 +381,9 @@ private fun LocalCalendarRow(
 ) {
     var menu by remember { mutableStateOf(false) }
     Row(Modifier.fillMaxWidth().padding(vertical = 6.dp), verticalAlignment = Alignment.CenterVertically) {
-        ColorDot(cal.color, editable = cal.owned, onClick = onColor)
+        // Recipients of a shared calendar may recolour it (their own per-user
+        // colour); only renaming/other management stays owner-only.
+        ColorDot(cal.color, editable = true, onClick = onColor)
         Column(Modifier.weight(1f).padding(start = 12.dp)) {
             Row(verticalAlignment = Alignment.CenterVertically) {
                 Text(cal.name, style = MaterialTheme.typography.bodyLarge)
@@ -380,7 +431,7 @@ private fun SharingSheet(vm: AccountsViewModel, calendarId: Int, onDismiss: () -
 
     ModalBottomSheet(onDismissRequest = onDismiss) {
         Column(
-            Modifier.fillMaxWidth().padding(horizontal = 20.dp).padding(bottom = 24.dp).verticalScroll(rememberScrollState()),
+            Modifier.fillMaxWidth().navigationBarsPadding().padding(horizontal = 20.dp).padding(bottom = 24.dp).verticalScroll(rememberScrollState()),
         ) {
             Text(tr("share.title"), style = MaterialTheme.typography.titleLarge, fontWeight = FontWeight.SemiBold)
             Spacer(Modifier.size(16.dp))

app/src/main/java/com/scarriffle/calendarr/ui/accounts/AccountsViewModel.kt

@@ -61,8 +61,12 @@ class AccountsViewModel @Inject constructor(
         }
     }
 
-    fun addLocal(name: String, color: String, onChanged: () -> Unit) =
-        mutate(onChanged) { repository.addLocalCalendar(name, color) }
+    fun addLocal(
+        name: String, color: String, onChanged: () -> Unit,
+        isBirthday: Boolean = false, birthdayNotifyDaysBefore: Int? = null,
+    ) = mutate(onChanged) {
+        repository.addLocalCalendar(name, color, isBirthday, birthdayNotifyDaysBefore)
+    }
 
     fun deleteLocal(id: Int, onChanged: () -> Unit) =
         mutate(onChanged) { repository.deleteLocalCalendar(id) }
@@ -99,6 +103,13 @@ class AccountsViewModel @Inject constructor(
     fun setSourceColor(source: String, calendarId: Int, color: String, onChanged: () -> Unit) =
         mutate(onChanged) { repository.setCalendarColor(source, calendarId, color) }
 
+    // ---- Banished (permanently hidden) calendars ----
+
+    /** Lift the server-side sidebar_hidden flag so a banished calendar reappears.
+     *  `onChanged` triggers the calendar screen's reconcile + refetch. */
+    fun unbanishCalendar(source: String, calendarId: Int, onChanged: () -> Unit) =
+        mutate(onChanged) { repository.setCalendarSidebarHidden(source, calendarId, hidden = false) }
+
     // ---- Sharing ----
 
     var shares by mutableStateOf<List<CalendarShareEntry>>(emptyList())

app/src/main/java/com/scarriffle/calendarr/ui/auth/LoginScreen.kt

@@ -9,6 +9,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowBack
@@ -102,7 +103,7 @@ fun LoginScreen(
                 modifier = Modifier.fillMaxWidth(),
             ) {
                 if (vm.loggingIn) {
-                    CircularProgressIndicator(modifier = Modifier.height(20.dp), strokeWidth = 2.dp)
+                    CircularProgressIndicator(modifier = Modifier.size(20.dp), strokeWidth = 2.dp)
                 } else {
                     Text(tr("auth.login"))
                 }

app/src/main/java/com/scarriffle/calendarr/ui/auth/ServerSetupScreen.kt

@@ -7,6 +7,7 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.CalendarMonth
@@ -78,7 +79,7 @@ fun ServerSetupScreen(
             modifier = Modifier.fillMaxWidth(),
         ) {
             if (vm.checking) {
-                CircularProgressIndicator(modifier = Modifier.height(20.dp), strokeWidth = 2.dp)
+                CircularProgressIndicator(modifier = Modifier.size(20.dp), strokeWidth = 2.dp)
             } else {
                 Text(tr("auth.continue"))
             }

app/src/main/java/com/scarriffle/calendarr/ui/calendar/AgendaView.kt

@@ -98,7 +98,12 @@ private fun AgendaRow(event: CalEvent, lang: String, dimmed: Boolean, onClick: (
         Box(Modifier.size(10.dp).clip(CircleShape).background(colorFromHex(event.effectiveColor)))
         Spacer(Modifier.width(12.dp))
         Column(Modifier.weight(1f)) {
-            Text(event.title, style = MaterialTheme.typography.bodyLarge, fontWeight = FontWeight.Medium)
+            EventLabel(
+                event = event,
+                color = MaterialTheme.colorScheme.onSurface,
+                fontSize = MaterialTheme.typography.bodyLarge.fontSize,
+                fontWeight = FontWeight.Medium,
+            )
             if (event.location.isNotBlank()) {
                 Text(event.location, style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
             }

app/src/main/java/com/scarriffle/calendarr/ui/calendar/BirthdayDialog.kt

@@ -0,0 +1,115 @@
+package com.scarriffle.calendarr.ui.calendar
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.size
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.DatePicker
+import androidx.compose.material3.DatePickerDialog
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.rememberDatePickerState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.scarriffle.calendarr.domain.model.LocalCalendar
+import com.scarriffle.calendarr.ui.tr
+import java.time.Instant
+import java.time.LocalDate
+import java.time.ZoneOffset
+import java.time.format.DateTimeFormatter
+
+/**
+ * Minimal "new birthday" mask for the user's single birthday calendar: name +
+ * date (with an optional "year unknown"). Saves an all-day, yearly-recurring
+ * local event; the server adds the age suffix and cake icon. If no birthday
+ * calendar exists yet, offers to activate one.
+ */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun BirthdayDialog(
+    calendar: LocalCalendar?,
+    onDismiss: () -> Unit,
+    onActivate: () -> Unit,
+    onImportContacts: () -> Unit,
+    onSave: (name: String, date: LocalDate, yearKnown: Boolean) -> Unit,
+) {
+    var name by remember { mutableStateOf("") }
+    var yearUnknown by remember { mutableStateOf(false) }
+    var pickedDate by remember { mutableStateOf(LocalDate.now()) }
+    var showPicker by remember { mutableStateOf(false) }
+
+    AlertDialog(
+        onDismissRequest = onDismiss,
+        title = { Text(tr("birthday.new_title")) },
+        text = {
+            Column {
+                if (calendar == null) {
+                    Text(tr("birthday.activate_hint"), color = MaterialTheme.colorScheme.onSurfaceVariant)
+                } else {
+                    OutlinedTextField(
+                        name, { name = it },
+                        label = { Text(tr("birthday.person")) },
+                        singleLine = true, modifier = Modifier.fillMaxWidth(),
+                    )
+                    Spacer(Modifier.size(8.dp))
+                    FilterChip(
+                        selected = true, onClick = { showPicker = true },
+                        label = { Text("${tr("birthday.date")}: ${formatBirthday(pickedDate, yearUnknown)}") },
+                    )
+                    Spacer(Modifier.size(8.dp))
+                    FilterChip(
+                        selected = yearUnknown, onClick = { yearUnknown = !yearUnknown },
+                        label = { Text(tr("birthday.year_unknown")) },
+                    )
+                    Spacer(Modifier.size(4.dp))
+                    TextButton(onClick = onImportContacts) { Text(tr("birthday.import_contacts")) }
+                }
+            }
+        },
+        confirmButton = {
+            if (calendar == null) {
+                TextButton(onClick = onActivate) { Text(tr("birthday.activate")) }
+            } else {
+                TextButton(
+                    enabled = name.isNotBlank(),
+                    onClick = { onSave(name.trim(), pickedDate, !yearUnknown) },
+                ) { Text(tr("common.save")) }
+            }
+        },
+        dismissButton = { TextButton(onClick = onDismiss) { Text(tr("common.cancel")) } },
+    )
+
+    if (showPicker) {
+        val dpState = rememberDatePickerState(
+            initialSelectedDateMillis = pickedDate.atStartOfDay(ZoneOffset.UTC).toInstant().toEpochMilli(),
+        )
+        DatePickerDialog(
+            onDismissRequest = { showPicker = false },
+            confirmButton = {
+                TextButton(onClick = {
+                    dpState.selectedDateMillis?.let { millis ->
+                        pickedDate = Instant.ofEpochMilli(millis).atZone(ZoneOffset.UTC).toLocalDate()
+                    }
+                    showPicker = false
+                }) { Text(tr("common.save")) }
+            },
+            dismissButton = { TextButton(onClick = { showPicker = false }) { Text(tr("common.cancel")) } },
+        ) { DatePicker(state = dpState) }
+    }
+}
+
+private val DAY_MONTH = DateTimeFormatter.ofPattern("dd.MM.")
+private val DAY_MONTH_YEAR = DateTimeFormatter.ofPattern("dd.MM.yyyy")
+
+private fun formatBirthday(date: LocalDate, yearUnknown: Boolean): String =
+    date.format(if (yearUnknown) DAY_MONTH else DAY_MONTH_YEAR)

app/src/main/java/com/scarriffle/calendarr/ui/calendar/CalendarDrawer.kt

@@ -0,0 +1,293 @@
+package com.scarriffle.calendarr.ui.calendar
+
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.combinedClickable
+import androidx.compose.foundation.horizontalScroll
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Archive
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.KeyboardArrowDown
+import androidx.compose.material.icons.filled.KeyboardArrowUp
+import androidx.compose.material.icons.filled.Lock
+import androidx.compose.material.icons.filled.Notifications
+import androidx.compose.material.icons.filled.NotificationsOff
+import androidx.compose.material.icons.filled.Refresh
+import androidx.compose.material.icons.filled.Settings
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.filled.VisibilityOff
+import androidx.compose.material3.DropdownMenu
+import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.FilterChip
+import androidx.compose.material3.Divider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalDrawerSheet
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import com.scarriffle.calendarr.domain.model.CalViewType
+import com.scarriffle.calendarr.domain.model.Group
+import com.scarriffle.calendarr.ui.groups.GroupIcon
+import com.scarriffle.calendarr.ui.tr
+import com.scarriffle.calendarr.util.colorFromHex
+
+/**
+ * The left navigation drawer: calendar visibility (flat, reorderable) + view /
+ * group switching + a header with manual sync, the full menu, and close. Mirrors
+ * the iOS side drawer. Order is device-local (CalendarViewModel.calendarOrder).
+ */
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalFoundationApi::class)
+@Composable
+fun CalendarDrawerContent(
+    state: CalendarUiState,
+    vm: CalendarViewModel,
+    username: String,
+    serverUrl: String,
+    calendars: List<CalendarFilterEntry>,
+    onOpenMenu: () -> Unit,
+    onSync: () -> Unit,
+    onClose: () -> Unit,
+) {
+    var isSorting by remember { mutableStateOf(false) }
+
+    // Working order: entries sorted by the stored order (unknown → end, by name).
+    var order by remember(calendars, vm.calendarOrder) {
+        mutableStateOf(
+            calendars.sortedWith(
+                compareBy(
+                    { vm.calendarOrder.indexOf(it.key).let { i -> if (i < 0) Int.MAX_VALUE else i } },
+                    { it.name.lowercase() },
+                )
+            ).map { it.key }
+        )
+    }
+    val entries = order.mapNotNull { key -> calendars.firstOrNull { it.key == key } }
+
+    fun move(index: Int, delta: Int) {
+        val to = index + delta
+        if (to < 0 || to >= order.size) return
+        val m = order.toMutableList()
+        val x = m.removeAt(index); m.add(to, x)
+        order = m
+        vm.setCalendarOrder(m)
+    }
+
+    ModalDrawerSheet(Modifier.width(320.dp).fillMaxHeight()) {
+        Column(Modifier.fillMaxHeight()) {
+            header(username, serverUrl, onSync, onOpenMenu, onClose)
+            Divider()
+            viewSwitcher(state.viewType) { vm.setViewType(it) }
+            Divider()
+            if (state.groups.isNotEmpty()) {
+                groupSwitcher(state.groups, state.activeGroup) { vm.switchGroup(it) }
+                Divider()
+            }
+            Row(
+                Modifier.fillMaxWidth().padding(start = 16.dp, end = 8.dp, top = 8.dp, bottom = 2.dp),
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                Text(tr("filter.title"), style = MaterialTheme.typography.titleSmall,
+                    fontWeight = FontWeight.SemiBold, color = MaterialTheme.colorScheme.onSurfaceVariant)
+                Spacer(Modifier.weight(1f))
+                TextButton(onClick = { isSorting = !isSorting }) {
+                    Text(tr(if (isSorting) "filter.done" else "filter.sort"))
+                }
+            }
+            LazyColumn(Modifier.fillMaxWidth().weight(1f).navigationBarsPadding()) {
+                items(entries, key = { it.key }) { entry ->
+                    CalendarRow(
+                        entry = entry,
+                        visible = entry.key !in state.hiddenKeys,
+                        reminderDisabled = entry.key in state.reminderDisabledKeys,
+                        sorting = isSorting,
+                        onToggle = { vm.setCalendarHidden(entry.key, !it) },
+                        onBanish = { vm.setCalendarBanished(entry.key, banished = true) },
+                        onToggleReminders = { vm.setCalendarRemindersDisabled(entry.key, disabled = it) },
+                        onMoveUp = { move(order.indexOf(entry.key), -1) },
+                        onMoveDown = { move(order.indexOf(entry.key), 1) },
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+private fun header(
+    username: String,
+    serverUrl: String,
+    onSync: () -> Unit,
+    onOpenMenu: () -> Unit,
+    onClose: () -> Unit,
+) {
+    Row(
+        Modifier.fillMaxWidth().statusBarsPadding().padding(start = 16.dp, end = 4.dp, top = 8.dp, bottom = 8.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Box(
+            Modifier.size(38.dp).clip(CircleShape).background(MaterialTheme.colorScheme.primary),
+            contentAlignment = Alignment.Center,
+        ) {
+            Text(username.firstOrNull()?.uppercase() ?: "?",
+                style = MaterialTheme.typography.titleSmall,
+                color = MaterialTheme.colorScheme.onPrimary, fontWeight = FontWeight.Bold)
+        }
+        Column(Modifier.weight(1f).padding(start = 12.dp)) {
+            Text(username, style = MaterialTheme.typography.bodyLarge, fontWeight = FontWeight.SemiBold, maxLines = 1)
+            Text(serverUrl.removePrefix("https://").removePrefix("http://"),
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant, maxLines = 1)
+        }
+        IconButton(onClick = onSync, modifier = Modifier.size(40.dp)) {
+            Icon(Icons.Filled.Refresh, contentDescription = tr("menu.sync"), modifier = Modifier.size(20.dp), tint = MaterialTheme.colorScheme.primary)
+        }
+        IconButton(onClick = onOpenMenu, modifier = Modifier.size(40.dp)) {
+            Icon(Icons.Filled.Settings, contentDescription = tr("menu.appearance"), modifier = Modifier.size(20.dp), tint = MaterialTheme.colorScheme.primary)
+        }
+        IconButton(onClick = onClose, modifier = Modifier.size(40.dp)) {
+            Icon(Icons.Filled.Close, contentDescription = tr("common.close"), modifier = Modifier.size(20.dp), tint = MaterialTheme.colorScheme.onSurfaceVariant)
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun viewSwitcher(current: CalViewType, onSelect: (CalViewType) -> Unit) {
+    Row(
+        Modifier.fillMaxWidth().horizontalScroll(rememberScrollState()).padding(horizontal = 12.dp, vertical = 8.dp),
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+    ) {
+        CalViewType.entries.forEach { type ->
+            FilterChip(
+                selected = current == type,
+                onClick = { onSelect(type) },
+                label = { Text(tr("view.${type.key}")) },
+                leadingIcon = { Icon(type.icon, contentDescription = null, modifier = Modifier.size(18.dp)) },
+            )
+        }
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+private fun groupSwitcher(groups: List<Group>, active: Group?, onSwitch: (Group?) -> Unit) {
+    Row(
+        Modifier.fillMaxWidth().horizontalScroll(rememberScrollState()).padding(horizontal = 12.dp, vertical = 8.dp),
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+    ) {
+        FilterChip(
+            selected = active == null,
+            onClick = { onSwitch(null) },
+            label = { Text(tr("group.switch.personal")) },
+        )
+        groups.forEach { g ->
+            FilterChip(
+                selected = active?.id == g.id,
+                onClick = { onSwitch(g) },
+                label = { Text(g.name) },
+                leadingIcon = { GroupIcon(g.icon) },
+            )
+        }
+    }
+}
+
+@OptIn(ExperimentalFoundationApi::class)
+@Composable
+private fun CalendarRow(
+    entry: CalendarFilterEntry,
+    visible: Boolean,
+    reminderDisabled: Boolean,
+    sorting: Boolean,
+    onToggle: (Boolean) -> Unit,
+    onBanish: () -> Unit,
+    onToggleReminders: (Boolean) -> Unit,
+    onMoveUp: () -> Unit,
+    onMoveDown: () -> Unit,
+) {
+    var menuOpen by remember { mutableStateOf(false) }
+    Box {
+        Row(
+            Modifier.fillMaxWidth()
+                .combinedClickable(
+                    onClick = { if (!sorting) onToggle(visible) },
+                    onLongClick = { if (!sorting) menuOpen = true },
+                )
+                .padding(start = 16.dp, end = 4.dp, top = 5.dp, bottom = 5.dp),
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            Box(Modifier.size(12.dp).clip(CircleShape).background(colorFromHex(entry.color)))
+            Text(
+                entry.name,
+                modifier = Modifier.weight(1f).padding(start = 12.dp),
+                style = MaterialTheme.typography.bodyMedium,
+                maxLines = 1,
+                color = if (visible) MaterialTheme.colorScheme.onSurface else MaterialTheme.colorScheme.onSurfaceVariant,
+            )
+            if (entry.readOnly) {
+                Icon(Icons.Filled.Lock, contentDescription = tr("filter.read_only"),
+                    tint = MaterialTheme.colorScheme.onSurfaceVariant, modifier = Modifier.padding(end = 4.dp).size(14.dp))
+            }
+            if (sorting) {
+                IconButton(onClick = onMoveUp, modifier = Modifier.size(36.dp)) {
+                    Icon(Icons.Filled.KeyboardArrowUp, contentDescription = tr("filter.move_up"))
+                }
+                IconButton(onClick = onMoveDown, modifier = Modifier.size(36.dp)) {
+                    Icon(Icons.Filled.KeyboardArrowDown, contentDescription = tr("filter.move_down"))
+                }
+            } else {
+                if (reminderDisabled) {
+                    Icon(Icons.Filled.NotificationsOff, contentDescription = null,
+                        tint = MaterialTheme.colorScheme.onSurfaceVariant, modifier = Modifier.padding(end = 2.dp).size(15.dp))
+                }
+                IconButton(onClick = { onToggle(visible) }, modifier = Modifier.size(40.dp)) {
+                    Icon(
+                        if (visible) Icons.Filled.Visibility else Icons.Filled.VisibilityOff,
+                        contentDescription = null,
+                        modifier = Modifier.size(20.dp),
+                        tint = if (visible) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.onSurfaceVariant,
+                    )
+                }
+            }
+        }
+        DropdownMenu(expanded = menuOpen, onDismissRequest = { menuOpen = false }) {
+            DropdownMenuItem(
+                text = { Text(tr(if (reminderDisabled) "filter.reminders_on" else "filter.reminders_off")) },
+                leadingIcon = { Icon(if (reminderDisabled) Icons.Filled.Notifications else Icons.Filled.NotificationsOff, contentDescription = null) },
+                onClick = { menuOpen = false; onToggleReminders(!reminderDisabled) },
+            )
+            DropdownMenuItem(
+                text = { Text(tr("filter.banish")) },
+                leadingIcon = { Icon(Icons.Filled.Archive, contentDescription = null) },
+                onClick = { menuOpen = false; onBanish() },
+            )
+        }
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/calendar/CalendarFilterSheet.kt

@@ -6,10 +6,21 @@ import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Archive
+import androidx.compose.material.icons.filled.Lock
+import androidx.compose.material.icons.filled.Notifications
+import androidx.compose.material.icons.filled.NotificationsOff
+import androidx.compose.material.icons.filled.WarningAmber
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.Switch
@@ -26,7 +37,7 @@ import androidx.compose.ui.unit.dp
 import com.scarriffle.calendarr.ui.tr
 import com.scarriffle.calendarr.util.colorFromHex
 
-data class CalendarFilterEntry(val key: String, val name: String, val color: String)
+data class CalendarFilterEntry(val key: String, val name: String, val color: String, val source: String = "", val readOnly: Boolean = false)
 
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
@@ -36,9 +47,28 @@ fun CalendarFilterSheet(
     onDismiss: () -> Unit,
 ) {
     val state by vm.state.collectAsState()
+    val groupMode = state.activeGroup != null
+
+    // In group mode the filter lists members (+ the group calendar) so they can
+    // be hidden individually, Outlook-style; otherwise the normal calendars.
+    val groupEntries: List<CalendarFilterEntry> = if (groupMode) {
+        buildList {
+            state.activeGroupMembers.forEach { m ->
+                add(CalendarFilterEntry(groupMemberKey(m.id), m.displayName, m.color ?: "#4285f4"))
+            }
+            add(CalendarFilterEntry(GROUP_CALENDAR_KEY, tr("groups.calendar"), state.activeGroup?.groupCalendarColor ?: "#4285f4"))
+        }
+    } else emptyList()
+    val rows = if (groupMode) groupEntries else events
+    val hiddenSet = if (groupMode) state.hiddenGroupKeys else state.hiddenKeys
 
     ModalBottomSheet(onDismissRequest = onDismiss) {
-        Column(Modifier.fillMaxWidth().padding(horizontal = 16.dp, vertical = 8.dp)) {
+        Column(
+            Modifier.fillMaxWidth()
+                .verticalScroll(rememberScrollState())
+                .navigationBarsPadding()
+                .padding(horizontal = 16.dp, vertical = 8.dp),
+        ) {
             Row(
                 Modifier.fillMaxWidth(),
                 horizontalArrangement = Arrangement.SpaceBetween,
@@ -46,37 +76,92 @@ fun CalendarFilterSheet(
             ) {
                 Text(tr("filter.title"), style = MaterialTheme.typography.titleLarge, fontWeight = FontWeight.SemiBold)
                 Row {
-                    TextButton(onClick = { vm.setHiddenCalendars(emptySet()) }) { Text(tr("filter.show_all")) }
                     TextButton(onClick = {
-                        vm.setHiddenCalendars(events.map { it.key }.toSet())
+                        if (groupMode) vm.setHiddenGroupKeys(emptySet()) else vm.setHiddenCalendars(emptySet())
+                    }) { Text(tr("filter.show_all")) }
+                    TextButton(onClick = {
+                        if (groupMode) vm.setHiddenGroupKeys(rows.map { it.key }.toSet())
+                        else vm.setHiddenCalendars(rows.map { it.key }.toSet())
                     }) { Text(tr("filter.hide_all")) }
                 }
             }
-            if (events.isEmpty()) {
+            if (rows.isEmpty()) {
                 Text(
                     tr("filter.empty"),
                     color = MaterialTheme.colorScheme.onSurfaceVariant,
                     modifier = Modifier.padding(vertical = 24.dp),
                 )
             }
-            events.forEach { entry ->
-                val visible = entry.key !in state.hiddenKeys
+            rows.forEach { entry ->
+                val visible = entry.key !in hiddenSet
+                // entry.key is "source:id" (see calendarKey()); match sync errors on the
+                // same (source, calendarId) pair the server already attaches to events.
+                val entryId = entry.key.substringAfter(":")
+                val hasSyncError = !groupMode && state.syncErrors.any { err ->
+                    err.source == entry.source && err.calendarId?.toString() == entryId
+                }
                 Row(
                     Modifier.fillMaxWidth().padding(vertical = 8.dp),
                     verticalAlignment = Alignment.CenterVertically,
                 ) {
                     Box(Modifier.size(14.dp).clip(CircleShape).background(colorFromHex(entry.color)))
+                    if (hasSyncError) {
+                        Icon(
+                            Icons.Filled.WarningAmber,
+                            contentDescription = tr("filter.sync_error"),
+                            tint = MaterialTheme.colorScheme.error,
+                            modifier = Modifier.padding(start = 8.dp).size(16.dp),
+                        )
+                    }
                     Text(
                         entry.name,
                         modifier = Modifier.weight(1f).padding(start = 12.dp),
                         style = MaterialTheme.typography.bodyLarge,
                     )
+                    if (entry.readOnly) {
+                        Icon(
+                            Icons.Filled.Lock,
+                            contentDescription = tr("filter.read_only"),
+                            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                            modifier = Modifier.padding(end = 4.dp).size(15.dp),
+                        )
+                    }
+                    if (!groupMode) {
+                        val remDisabled = entry.key in state.reminderDisabledKeys
+                        IconButton(onClick = { vm.setCalendarRemindersDisabled(entry.key, disabled = !remDisabled) }) {
+                            Icon(
+                                if (remDisabled) Icons.Filled.NotificationsOff else Icons.Filled.Notifications,
+                                contentDescription = tr(if (remDisabled) "filter.reminders_on" else "filter.reminders_off"),
+                                tint = if (remDisabled) MaterialTheme.colorScheme.onSurfaceVariant else MaterialTheme.colorScheme.primary,
+                            )
+                        }
+                        // Banish = permanently hide (syncs to the server); moves the
+                        // calendar into Settings, distinct from the local quick-hide.
+                        IconButton(onClick = { vm.setCalendarBanished(entry.key, banished = true) }) {
+                            Icon(
+                                Icons.Filled.Archive,
+                                contentDescription = tr("filter.banish"),
+                                tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                            )
+                        }
+                    }
                     Switch(
                         checked = visible,
-                        onCheckedChange = { vm.setCalendarHidden(entry.key, hidden = !it) },
+                        onCheckedChange = {
+                            if (groupMode) vm.setGroupKeyHidden(entry.key, hidden = !it)
+                            else vm.setCalendarHidden(entry.key, !it)
+                        },
                     )
                 }
             }
+            if (!groupMode && state.banishedKeys.isNotEmpty()) {
+                Text(
+                    tr("filter.banished_footer"),
+                    style = MaterialTheme.typography.bodySmall,
+                    color = MaterialTheme.colorScheme.onSurfaceVariant,
+                    modifier = Modifier.padding(top = 8.dp),
+                )
+            }
             Box(Modifier.padding(bottom = 24.dp))
         }
     }

app/src/main/java/com/scarriffle/calendarr/ui/calendar/CalendarScreen.kt

@@ -5,27 +5,37 @@ import androidx.compose.animation.fadeIn
 import androidx.compose.animation.fadeOut
 import androidx.compose.animation.slideInVertically
 import androidx.compose.animation.slideOutVertically
+import androidx.compose.foundation.ExperimentalFoundationApi
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.WindowInsets
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.statusBarsPadding
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Add
 import androidx.compose.material.icons.filled.ChevronLeft
 import androidx.compose.material.icons.filled.ChevronRight
-import androidx.compose.material.icons.filled.FilterList
 import androidx.compose.material.icons.filled.Menu
 import androidx.compose.material.icons.filled.Today
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
+import androidx.compose.material3.DrawerValue
 import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Divider
 import androidx.compose.material3.FloatingActionButton
+import androidx.compose.material3.ModalNavigationDrawer
+import androidx.compose.material3.rememberDrawerState
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.LinearProgressIndicator
@@ -35,15 +45,18 @@ import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.text.style.TextOverflow
@@ -55,36 +68,110 @@ import com.scarriffle.calendarr.domain.model.CalEvent
 import com.scarriffle.calendarr.domain.model.CalViewType
 import com.scarriffle.calendarr.ui.LocalLang
 import com.scarriffle.calendarr.ui.accounts.AccountsScreen
+import com.scarriffle.calendarr.domain.model.Group
 import com.scarriffle.calendarr.ui.event.EventDetailScreen
 import com.scarriffle.calendarr.ui.event.EventEditorSheet
-import com.scarriffle.calendarr.ui.menu.MenuSheet
+import com.scarriffle.calendarr.ui.groups.GroupIcon
+import com.scarriffle.calendarr.ui.groups.GroupsScreen
+import com.scarriffle.calendarr.ui.menu.MenuScreen
 import com.scarriffle.calendarr.ui.profile.ProfileScreen
 import com.scarriffle.calendarr.ui.settings.SettingsScreen
 import com.scarriffle.calendarr.ui.tr
+import kotlinx.coroutines.launch
 import java.time.LocalDate
 
-private enum class Overlay { NONE, PROFILE, SETTINGS, ACCOUNTS }
+private enum class Overlay { NONE, MENU, PROFILE, SETTINGS, ACCOUNTS, GROUPS }
 
 data class EditorRequest(val existing: CalEvent?, val date: LocalDate, val prefill: CalEvent? = null)
 
-@OptIn(ExperimentalMaterial3Api::class)
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalFoundationApi::class)
 @Composable
 fun CalendarScreen(
     onLogout: () -> Unit,
     onSwitchServer: () -> Unit,
     onSettingsChanged: (AppSettings) -> Unit,
     onSettingsSynced: () -> Unit,
+    username: String = "",
+    serverUrl: String = "",
     vm: CalendarViewModel = hiltViewModel(),
 ) {
     val state by vm.state.collectAsState()
     val lang = LocalLang.current
+    val context = androidx.compose.ui.platform.LocalContext.current
+
+    // Ask once for notification permission (Android 13+), then keep the OS
+    // reminder alarms in sync with the visible events / muted-calendar set.
+    val notifPermLauncher = androidx.activity.compose.rememberLauncherForActivityResult(
+        androidx.activity.result.contract.ActivityResultContracts.RequestPermission()
+    ) {}
+    androidx.compose.runtime.LaunchedEffect(Unit) {
+        if (android.os.Build.VERSION.SDK_INT >= 33 &&
+            androidx.core.content.ContextCompat.checkSelfPermission(
+                context, android.Manifest.permission.POST_NOTIFICATIONS
+            ) != android.content.pm.PackageManager.PERMISSION_GRANTED
+        ) {
+            notifPermLauncher.launch(android.Manifest.permission.POST_NOTIFICATIONS)
+        }
+    }
+    androidx.compose.runtime.LaunchedEffect(state.events, state.reminderDisabledKeys) {
+        com.scarriffle.calendarr.notifications.NotificationScheduler.reschedule(
+            context, state.events, state.reminderDisabledKeys, vm.defaultReminderMinutes
+        )
+    }
+    // Re-check server-side calendar visibility whenever the app returns to the
+    // foreground (e.g. after hiding/showing a calendar on the web or another
+    // device); reloads only if something changed.
+    val lifecycleOwner = androidx.compose.ui.platform.LocalLifecycleOwner.current
+    androidx.compose.runtime.DisposableEffect(lifecycleOwner) {
+        val observer = androidx.lifecycle.LifecycleEventObserver { _, event ->
+            if (event == androidx.lifecycle.Lifecycle.Event.ON_RESUME) vm.onAppResumed()
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
+    }
+
+    // Contacts birthday import (mirrors iOS): request permission on demand; sync
+    // this device's contact birthdays into the birthday calendar.
+    val deviceName = android.os.Build.MODEL ?: "Android"
+    fun runBirthdayImport() {
+        vm.birthdaysSyncEnabled = true
+        vm.syncContactBirthdays(com.scarriffle.calendarr.data.ContactsReader.readBirthdays(context), deviceName)
+    }
+    val contactsPermLauncher = androidx.activity.compose.rememberLauncherForActivityResult(
+        androidx.activity.result.contract.ActivityResultContracts.RequestPermission()
+    ) { granted -> if (granted) runBirthdayImport() }
+    fun startBirthdayImport() {
+        if (androidx.core.content.ContextCompat.checkSelfPermission(
+                context, android.Manifest.permission.READ_CONTACTS
+            ) == android.content.pm.PackageManager.PERMISSION_GRANTED
+        ) runBirthdayImport() else contactsPermLauncher.launch(android.Manifest.permission.READ_CONTACTS)
+    }
+    androidx.compose.runtime.LaunchedEffect(Unit) {
+        if (vm.birthdaysSyncEnabled &&
+            androidx.core.content.ContextCompat.checkSelfPermission(
+                context, android.Manifest.permission.READ_CONTACTS
+            ) == android.content.pm.PackageManager.PERMISSION_GRANTED
+        ) runBirthdayImport()
+    }
 
     var viewMenuOpen by remember { mutableStateOf(false) }
-    var showMenu by remember { mutableStateOf(false) }
-    var showFilter by remember { mutableStateOf(false) }
     var detailEvent by remember { mutableStateOf<CalEvent?>(null) }
     var editor by remember { mutableStateOf<EditorRequest?>(null) }
     var overlay by remember { mutableStateOf(Overlay.NONE) }
+    var dayPreview by remember { mutableStateOf<LocalDate?>(null) }
+    var fabMenuOpen by remember { mutableStateOf(false) }
+    var showBirthday by remember { mutableStateOf(false) }
+    var birthdayCal by remember { mutableStateOf<com.scarriffle.calendarr.domain.model.LocalCalendar?>(null) }
+    val birthdayScope = rememberCoroutineScope()
+    val birthdayCalName = tr("birthday.calendar_name")
+
+    // Side navigation drawer (calendars + groups + view + menu).
+    val drawerState = rememberDrawerState(DrawerValue.Closed)
+    val drawerScope = rememberCoroutineScope()
+    val drawerCalendars = remember(state.events, state.banishedKeys, state.allCalendars) { allKnownCalendars(vm) }
+    androidx.compose.runtime.LaunchedEffect(drawerState.currentValue) {
+        if (drawerState.isOpen) vm.loadAllCalendars()
+    }
 
     // Continuous month scrolling
     val monthListState = rememberLazyListState()
@@ -106,6 +193,18 @@ fun CalendarScreen(
         if (isMonth) todaySignal++ else vm.moveToToday()
     }
 
+    ModalNavigationDrawer(
+        drawerState = drawerState,
+        drawerContent = {
+            CalendarDrawerContent(
+                state = state, vm = vm, username = username, serverUrl = serverUrl,
+                calendars = drawerCalendars,
+                onOpenMenu = { drawerScope.launch { drawerState.close() }; overlay = Overlay.MENU },
+                onSync = { drawerScope.launch { drawerState.close() }; vm.syncWithServer() },
+                onClose = { drawerScope.launch { drawerState.close() } },
+            )
+        },
+    ) {
     Scaffold(
         topBar = {
             CompactTopBar(
@@ -113,30 +212,67 @@ fun CalendarScreen(
                 viewType = state.viewType,
                 loading = state.isLoading || state.isBackgroundCaching,
                 viewMenuOpen = viewMenuOpen,
-                onMenu = { showMenu = true },
+                showMenuButton = !state.hideMenuButton,
+                onMenu = { drawerScope.launch { drawerState.open() } },
                 onPrev = { goPrev() },
                 onToday = { goToday() },
                 onNext = { goNext() },
-                onFilter = { showFilter = true },
                 onViewMenuToggle = { viewMenuOpen = it },
                 onSelectView = { vm.setViewType(it) },
             )
         },
         floatingActionButton = {
-            FloatingActionButton(
-                onClick = { editor = EditorRequest(null, if (isMonth) visibleMonth else state.currentDate) },
-                containerColor = MaterialTheme.colorScheme.primary,
-                contentColor = MaterialTheme.colorScheme.onPrimary,
-            ) {
-                Icon(Icons.Filled.Add, contentDescription = tr("cal.new_event"))
+            // Tap = new event; long-press opens a small menu (new event / new
+            // birthday). A transparent overlay carries the combined click so the
+            // long-press is reliable on the Material FAB.
+            Box(Modifier.navigationBarsPadding()) {
+                FloatingActionButton(
+                    onClick = {},
+                    shape = CircleShape,
+                    containerColor = MaterialTheme.colorScheme.primary,
+                    contentColor = MaterialTheme.colorScheme.onPrimary,
+                ) {
+                    Icon(Icons.Filled.Add, contentDescription = tr("cal.new_event"))
+                }
+                Box(
+                    Modifier
+                        .matchParentSize()
+                        .clip(CircleShape)
+                        .combinedClickable(
+                            onClick = { editor = EditorRequest(null, if (isMonth) visibleMonth else state.currentDate) },
+                            onLongClick = { fabMenuOpen = true },
+                        ),
+                )
+                DropdownMenu(expanded = fabMenuOpen, onDismissRequest = { fabMenuOpen = false }) {
+                    DropdownMenuItem(
+                        text = { Text(tr("cal.new_event")) },
+                        onClick = { fabMenuOpen = false; editor = EditorRequest(null, if (isMonth) visibleMonth else state.currentDate) },
+                    )
+                    DropdownMenuItem(
+                        text = { Text(tr("birthday.new")) },
+                        onClick = { fabMenuOpen = false; showBirthday = true },
+                    )
+                }
             }
         },
+        // Edge-to-edge: we place the system-bar insets ourselves (top bar gets
+        // statusBarsPadding, the content column gets navigationBarsPadding) so
+        // nothing hides behind the status/nav bars.
+        contentWindowInsets = WindowInsets(0),
     ) { padding ->
-        Column(Modifier.fillMaxSize().padding(padding)) {
+        Column(Modifier.fillMaxSize().padding(padding).navigationBarsPadding()) {
             state.error?.let { err ->
                 ErrorBanner(err, onRetry = { vm.loadVisible(force = true) }, onDismiss = vm::clearError)
             }
+            if (state.syncErrors.isNotEmpty()) {
+                SyncErrorBanner(state.syncErrors, onDismiss = vm::clearSyncErrors)
+            }
+            state.activeGroup?.let { g ->
+                GroupBanner(group = g, onExit = { vm.switchGroup(null) })
+            }
             Box(Modifier.fillMaxSize()) {
+                // remember: stable callbacks keep the lazily composed week rows
+                // skippable during scroll (fresh lambdas would recompose them all).
                 CalendarBody(
                     state = state,
                     vm = vm,
@@ -144,35 +280,41 @@ fun CalendarScreen(
                     scrollToTodaySignal = todaySignal,
                     monthJumpSignal = monthJumpSignal,
                     monthJumpTarget = monthJumpTarget,
-                    onVisibleMonthChange = { visibleMonth = it },
-                    onEventClick = { detailEvent = it },
-                    onDayClick = { date -> vm.goToDate(date, CalViewType.DAY) },
-                    onDayLongPress = { date -> editor = EditorRequest(null, date) },
+                    onVisibleMonthChange = remember { { visibleMonth = it } },
+                    onEventClick = remember { { detailEvent = it } },
+                    onDayClick = remember(vm) { { date -> vm.goToDate(date, CalViewType.DAY) } },
+                    onDayLongPress = remember { { date -> dayPreview = date } },
                 )
             }
         }
     }
+    }
 
     // ---- Sheets ----
 
-    if (showMenu) {
-        MenuSheet(
-            isAdmin = false,
-            onDismiss = { showMenu = false },
-            onProfile = { showMenu = false; overlay = Overlay.PROFILE },
-            onAppearance = { showMenu = false; overlay = Overlay.SETTINGS },
-            onAccounts = { showMenu = false; overlay = Overlay.ACCOUNTS },
-            onSync = { showMenu = false; vm.syncWithServer() },
-            onLogout = { showMenu = false; onLogout() },
-            onSwitchServer = { showMenu = false; onSwitchServer() },
+    dayPreview?.let { date ->
+        DayPreviewDialog(
+            date = date,
+            events = remember(state.events, date) { vm.eventsOn(date, state.events) },
+            onDismiss = { dayPreview = null },
+            onEventClick = { ev -> dayPreview = null; detailEvent = ev },
+            onCreateEvent = { dayPreview = null; editor = EditorRequest(null, date) },
+            onOpenDay = { dayPreview = null; vm.goToDate(date, CalViewType.DAY) },
+            onOpenWeek = { dayPreview = null; vm.goToDate(date, CalViewType.WEEK) },
         )
     }
 
-    if (showFilter) {
-        CalendarFilterSheet(
-            events = remember(state.events, state.hiddenKeys) { allKnownCalendars(vm) },
-            vm = vm,
-            onDismiss = { showFilter = false },
+    if (showBirthday) {
+        androidx.compose.runtime.LaunchedEffect(Unit) { birthdayCal = vm.birthdayCalendar() }
+        BirthdayDialog(
+            calendar = birthdayCal,
+            onDismiss = { showBirthday = false },
+            onActivate = { birthdayScope.launch { birthdayCal = vm.ensureBirthdayCalendar(birthdayCalName) } },
+            onImportContacts = { showBirthday = false; startBirthdayImport() },
+            onSave = { name, date, yearKnown ->
+                birthdayCal?.let { vm.createBirthday(it.id, name, date, yearKnown) {} }
+                showBirthday = false
+            },
         )
     }
 
@@ -211,8 +353,10 @@ fun CalendarScreen(
             request = req,
             writableCalendars = state.writableCalendars,
             onDismiss = { editor = null },
-            onSave = { cal, title, start, end, allDay, location, desc, color, isPrivate ->
-                vm.saveEvent(cal, req.existing, title, start, end, allDay, location, desc, color, isPrivate) { error ->
+            defaultDurationMinutes = vm.defaultEventDurationMinutes,
+            reminderDisabledKeys = state.reminderDisabledKeys,
+            onSave = { cal, title, start, end, allDay, location, desc, color, isPrivate, reminders ->
+                vm.saveEvent(cal, req.existing, title, start, end, allDay, location, desc, color, isPrivate, reminders) { error ->
                     if (error == null) editor = null
                 }
             },
@@ -220,16 +364,33 @@ fun CalendarScreen(
     }
 
     when (overlay) {
-        Overlay.PROFILE -> ProfileScreen(onClose = { overlay = Overlay.NONE })
-        Overlay.SETTINGS -> SettingsScreen(
+        Overlay.MENU -> MenuScreen(
+            username = username,
+            serverUrl = serverUrl,
             onClose = { overlay = Overlay.NONE },
+            onProfile = { overlay = Overlay.PROFILE },
+            onAppearance = { overlay = Overlay.SETTINGS },
+            onAccounts = { overlay = Overlay.ACCOUNTS },
+            onGroups = { overlay = Overlay.GROUPS },
+            onSync = { overlay = Overlay.NONE; vm.syncWithServer() },
+            onSwitchServer = onSwitchServer,
+            onLogout = onLogout,
+        )
+        Overlay.PROFILE -> ProfileScreen(onClose = { overlay = Overlay.MENU })
+        Overlay.SETTINGS -> SettingsScreen(
+            onClose = { overlay = Overlay.MENU; vm.refreshMonthViewMode() },
             onSettingsChanged = onSettingsChanged,
             onSettingsSynced = onSettingsSynced,
         )
         Overlay.ACCOUNTS -> AccountsScreen(
-            onClose = { overlay = Overlay.NONE },
+            onClose = { overlay = Overlay.MENU },
             onChanged = { vm.loadWritableCalendars(); vm.syncWithServer() },
         )
+        Overlay.GROUPS -> GroupsScreen(
+            onClose = { overlay = Overlay.MENU },
+            onChanged = { vm.loadGroups(); vm.loadWritableCalendars() },
+            onOpenGroupView = { g -> overlay = Overlay.NONE; vm.switchGroup(g) },
+        )
         Overlay.NONE -> Unit
     }
 }
@@ -283,6 +444,33 @@ private fun ErrorBanner(message: String, onRetry: () -> Unit, onDismiss: () -> U
     }
 }
 
+/**
+ * Additive to [ErrorBanner]: the fetch as a whole succeeded, but one or more
+ * enabled calendars failed to sync (e.g. expired credentials) and are showing
+ * zero events with no other indication. Same visual language, no retry button
+ * (retrying the whole range wouldn't target just the broken calendar).
+ */
+@Composable
+private fun SyncErrorBanner(errors: List<com.scarriffle.calendarr.data.SyncError>, onDismiss: () -> Unit) {
+    androidx.compose.material3.Surface(
+        color = MaterialTheme.colorScheme.errorContainer,
+        modifier = Modifier.fillMaxWidth(),
+    ) {
+        Column(Modifier.padding(12.dp)) {
+            errors.forEach { err ->
+                Text(
+                    "${err.name}: ${err.message}",
+                    color = MaterialTheme.colorScheme.onErrorContainer,
+                    style = MaterialTheme.typography.bodySmall,
+                )
+            }
+            androidx.compose.foundation.layout.Row {
+                TextButton(onClick = onDismiss) { Text(tr("common.close")) }
+            }
+        }
+    }
+}
+
 @Composable
 private fun loadingPlaceholder() {
     Box(Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
@@ -296,20 +484,24 @@ private fun CompactTopBar(
     viewType: CalViewType,
     loading: Boolean,
     viewMenuOpen: Boolean,
+    showMenuButton: Boolean,
     onMenu: () -> Unit,
     onPrev: () -> Unit,
     onToday: () -> Unit,
     onNext: () -> Unit,
-    onFilter: () -> Unit,
     onViewMenuToggle: (Boolean) -> Unit,
     onSelectView: (CalViewType) -> Unit,
 ) {
     val twoLine = viewType == CalViewType.WEEK || viewType == CalViewType.DAY
+    // Surface fills behind the status bar; the content column is inset below it.
     Surface(color = MaterialTheme.colorScheme.background) {
+        Column(Modifier.statusBarsPadding()) {
         Row(
             Modifier.fillMaxWidth().height(50.dp).padding(horizontal = 2.dp),
             verticalAlignment = Alignment.CenterVertically,
         ) {
+            // Menu (hamburger) on the left — the drawer opens from the left.
+            if (showMenuButton) CompactIcon(Icons.Filled.Menu, onMenu, tr("nav.menu"))
             CompactIcon(Icons.Filled.ChevronLeft, onPrev)
             TextButton(onClick = onToday, contentPadding = PaddingValues(horizontal = 6.dp)) {
                 Text(tr("nav.today"), fontSize = 13.sp)
@@ -331,7 +523,6 @@ private fun CompactTopBar(
                     strokeWidth = 2.dp,
                 )
             }
-            CompactIcon(Icons.Filled.FilterList, onFilter, tr("filter.button"))
             Box {
                 CompactIcon(viewType.icon, { onViewMenuToggle(true) }, tr("view.change"))
                 DropdownMenu(expanded = viewMenuOpen, onDismissRequest = { onViewMenuToggle(false) }) {
@@ -344,7 +535,11 @@ private fun CompactTopBar(
                     }
                 }
             }
-            CompactIcon(Icons.Filled.Menu, onMenu, tr("nav.menu"))
+        }
+        Divider(
+            thickness = 0.5.dp,
+            color = MaterialTheme.colorScheme.outline.copy(alpha = 0.7f),
+        )
         }
     }
 }
@@ -360,11 +555,36 @@ private fun CompactIcon(
     }
 }
 
-/** Distinct calendars currently present in the cache, for the filter sheet. */
+@Composable
+private fun GroupBanner(group: Group, onExit: () -> Unit) {
+    Surface(color = MaterialTheme.colorScheme.primary.copy(alpha = 0.15f), modifier = Modifier.fillMaxWidth()) {
+        Row(
+            Modifier.fillMaxWidth().padding(horizontal = 12.dp, vertical = 6.dp),
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            GroupIcon(group.icon, modifier = Modifier.padding(end = 6.dp))
+            Text(
+                "${tr("groups.view")}: ${group.name}",
+                modifier = Modifier.weight(1f),
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis,
+                style = MaterialTheme.typography.bodyMedium,
+            )
+            TextButton(onClick = onExit) { Text(tr("group.switch.personal")) }
+        }
+    }
+}
+
+/** Distinct calendars in the cache for the filter sheet — from the UNFILTERED
+ *  cache (minus banished) so a locally quick-hidden calendar still shows up and
+ *  can be toggled back on. */
 private fun allKnownCalendars(vm: CalendarViewModel): List<CalendarFilterEntry> {
-    val st = vm.state.value
-    return st.events
-        .map { CalendarFilterEntry(calendarKey(it.source, it.calendarId), it.calendarName.ifBlank { it.source }, it.effectiveColor) }
+    val fromEvents = vm.knownCalendars()
+        .map { CalendarFilterEntry(calendarKey(it.source, it.calendarId), it.calendarName.ifBlank { it.source }, it.effectiveColor, it.source, it.readOnly) }
+    // Event-derived entries first (current server colour / owner name), then the
+    // full source list so calendars WITHOUT events in range still appear;
+    // distinctBy keeps the event-derived entry when a calendar has both.
+    return (fromEvents + vm.state.value.allCalendars)
         .distinctBy { it.key }
         .sortedBy { it.name.lowercase() }
 }

app/src/main/java/com/scarriffle/calendarr/ui/calendar/CalendarViewModel.kt

@@ -4,9 +4,14 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.scarriffle.calendarr.data.CalendarRepository
 import com.scarriffle.calendarr.data.SettingsStore
+import com.scarriffle.calendarr.data.SyncError
 import com.scarriffle.calendarr.domain.model.CalEvent
 import com.scarriffle.calendarr.domain.model.CalViewType
+import com.scarriffle.calendarr.domain.model.Group
+import com.scarriffle.calendarr.domain.model.GroupMember
+import com.scarriffle.calendarr.domain.model.LocalCalendar
 import com.scarriffle.calendarr.domain.model.WritableCalendar
+import com.scarriffle.calendarr.util.Dates
 import dagger.hilt.android.lifecycle.HiltViewModel
 import kotlinx.coroutines.flow.MutableStateFlow
 import kotlinx.coroutines.flow.StateFlow
@@ -34,12 +39,36 @@ data class CalendarUiState(
     val isLoading: Boolean = false,
     val isBackgroundCaching: Boolean = false,
     val error: String? = null,
+    // Per-calendar sync failures from the last successful /events fetch (e.g.
+    // expired CalDAV credentials) — the fetch as a whole succeeded, but one or
+    // more enabled calendars silently returned nothing. Additive to `error`.
+    val syncErrors: List<SyncError> = emptyList(),
     val weekStartsOnMonday: Boolean = true,
     val writableCalendars: List<WritableCalendar> = emptyList(),
     val hiddenKeys: Set<String> = emptySet(),
     val banishedKeys: Set<String> = emptySet(),
+    // Calendars ("source:id") the user muted for reminders — events keep their
+    // reminders but the scheduler skips them.
+    val reminderDisabledKeys: Set<String> = emptySet(),
+    // Group overlay: when non-null the calendar shows the group's combined view.
+    val groups: List<Group> = emptyList(),
+    val activeGroup: Group? = null,
+    // Group overlay: full member list (for the filter) + per-member / group-cal
+    // hidden keys ("gm:<userId>" / "gc"). In-memory; reset when switching group.
+    val activeGroupMembers: List<GroupMember> = emptyList(),
+    val hiddenGroupKeys: Set<String> = emptySet(),
+    // Full calendar list across all sources (loaded on demand) so the filter
+    // shows every calendar, including ones with no events in the loaded range.
+    val allCalendars: List<CalendarFilterEntry> = emptyList(),
+    // Device-local: month view as horizontal paged (swipe) vs. scroll feed.
+    val monthViewPaged: Boolean = false,
+    // Device-local: hide the top-bar menu button (drawer opens via edge-swipe).
+    val hideMenuButton: Boolean = false,
 )
 
+fun groupMemberKey(ownerId: Int): String = "gm:$ownerId"
+const val GROUP_CALENDAR_KEY = "gc"
+
 @HiltViewModel
 class CalendarViewModel @Inject constructor(
     private val repository: CalendarRepository,
@@ -68,7 +97,8 @@ class CalendarViewModel @Inject constructor(
 
     init {
         loadWritableCalendars()
-        initialLoad()
+        loadGroups()
+        initialLoad(reconcile = true)
     }
 
     /**
@@ -76,12 +106,15 @@ class CalendarViewModel @Inject constructor(
      * mark ready. Entering the app fully-loaded avoids the first-open jank of
      * loading a big batch while the user is already scrolling.
      */
-    private fun initialLoad() {
+    private fun initialLoad(reconcile: Boolean = false) {
         val months = settingsStore.cacheMonths.toLong()
         val today = LocalDate.now().withDayOfMonth(1)
         val start = instant(today.minusMonths(months))
         val end = instant(today.plusMonths(months + 1))
         viewModelScope.launch {
+            // Honour a calendar hidden/shown on the web BEFORE the first load so
+            // the visibility filter is correct before events are rendered.
+            if (reconcile) reconcileCalendarVisibility()
             loadRange(start, end, background = false)
             markReady()
         }
@@ -94,9 +127,100 @@ class CalendarViewModel @Inject constructor(
             weekStartsOnMonday = s.weekStartsOnMonday,
             hiddenKeys = settingsStore.hiddenCalendarKeys,
             banishedKeys = settingsStore.banishedCalendarKeys,
+            reminderDisabledKeys = settingsStore.reminderDisabledCalendarKeys,
+            monthViewPaged = settingsStore.monthViewPaged,
+            hideMenuButton = settingsStore.hideMenuButton,
         )
     }
 
+    /** Re-read the device-local view prefs (called when settings close). */
+    fun refreshMonthViewMode() {
+        _state.update { it.copy(
+            monthViewPaged = settingsStore.monthViewPaged,
+            hideMenuButton = settingsStore.hideMenuButton,
+        ) }
+    }
+
+    // Device-local calendar order ("source:id"), mirrors the web cal_order.
+    val calendarOrder: List<String> get() = settingsStore.calendarOrder
+    fun setCalendarOrder(keys: List<String>) { settingsStore.calendarOrder = keys }
+
+    // ---- Contacts birthday import (mirrors the iOS BirthdaysImporter) ----
+
+    var birthdaysSyncEnabled: Boolean
+        get() = settingsStore.birthdaysSyncEnabled
+        set(value) { settingsStore.birthdaysSyncEnabled = value }
+
+    /** Mirror this device's contact birthdays into the (existing) birthday
+     *  calendar: reconcile rows scoped to this device's external_uid prefix
+     *  (add / update / delete), then report the device. No-op if disabled or
+     *  the birthday calendar hasn't been created. */
+    fun syncContactBirthdays(contacts: List<com.scarriffle.calendarr.data.ContactBirthday>, deviceName: String) {
+        if (!settingsStore.birthdaysSyncEnabled) return
+        viewModelScope.launch {
+            runCatching {
+                val cal = repository.getLocalCalendars().firstOrNull { it.isBirthday && it.owned }
+                    ?: return@runCatching
+                val existing = repository.getBirthdayEntries(cal.id)
+                val deviceId = settingsStore.birthdaysDeviceId
+                val prefix = "contact:$deviceId:"
+                val byExt = existing.filter { it.externalUid?.startsWith(prefix) == true }
+                    .associateBy { it.externalUid!! }
+                val seen = mutableSetOf<String>()
+                for (c in contacts) {
+                    val ext = prefix + c.contactId
+                    seen.add(ext)
+                    val (start, end) = birthdayRange(c.month, c.day, c.year)
+                    val match = byExt[ext]
+                    if (match != null) {
+                        val changed = match.title != c.name || match.month != c.month ||
+                            match.day != c.day || match.birthYear != c.year
+                        if (changed) repository.updateLocalEvent(
+                            uid = match.uid, title = c.name, start = start, end = end,
+                            isAllDay = true, location = "", description = "", color = null,
+                            rrule = "FREQ=YEARLY", birthYear = c.year, externalUid = ext,
+                        )
+                    } else {
+                        repository.createLocalEvent(
+                            calendarId = cal.id, title = c.name, start = start, end = end,
+                            isAllDay = true, location = "", description = "", color = null,
+                            rrule = "FREQ=YEARLY", birthYear = c.year, externalUid = ext,
+                        )
+                    }
+                }
+                byExt.filterKeys { it !in seen }.values.forEach { repository.deleteLocalEvent(it.uid) }
+                repository.reportBirthdaySync(deviceId, deviceName, contacts.size)
+            }
+            loadVisible(force = true)
+        }
+    }
+
+    private fun birthdayRange(month: Int, day: Int, year: Int?): Pair<Instant, Instant> {
+        val anchor = year ?: 2000 // leap-safe anchor for Feb 29 with unknown year
+        val date = LocalDate.of(anchor, month, day)
+        val start = date.atTime(12, 0).atZone(zone).toInstant()
+        val end = date.plusDays(1).atTime(12, 0).atZone(zone).toInstant()
+        return start to end
+    }
+
+    /** Default duration (minutes) for a new event's end time. */
+    val defaultEventDurationMinutes: Int get() = settingsStore.loadSettings().defaultEventDurationMinutes
+
+    /** Default reminder offset (minutes before start), or -1 when off. */
+    val defaultReminderMinutes: Int get() = settingsStore.loadSettings().defaultReminderMinutes ?: -1
+
+    /** Toggle a calendar's reminders without deleting any event reminders. */
+    fun setCalendarRemindersDisabled(key: String, disabled: Boolean) {
+        val keys = settingsStore.reminderDisabledCalendarKeys.toMutableSet()
+        if (disabled) keys.add(key) else keys.remove(key)
+        settingsStore.reminderDisabledCalendarKeys = keys
+        _state.update { it.copy(reminderDisabledKeys = keys) }
+        val parts = key.split(":")
+        val source = parts.getOrNull(0) ?: return
+        val id = parts.getOrNull(1)?.toIntOrNull() ?: return
+        viewModelScope.launch { runCatching { repository.setCalendarRemindersEnabled(source, id, enabled = !disabled) } }
+    }
+
     // ---- Navigation ----
 
     fun setViewType(type: CalViewType) {
@@ -174,7 +298,7 @@ class CalendarViewModel @Inject constructor(
             return
         }
         viewModelScope.launch {
-            loadRange(start, end, background = false)
+            loadRange(start, end, background = false, force = force)
             markReady()
         }
     }
@@ -189,19 +313,49 @@ class CalendarViewModel @Inject constructor(
     }
 
     /** Single serialized loader: avoids overlapping fetches that cause scroll jank. */
-    private suspend fun loadRange(start: Instant, end: Instant, background: Boolean) {
+    private suspend fun loadRange(start: Instant, end: Instant, background: Boolean, force: Boolean = false) {
         loadMutex.withLock {
             // Another load (e.g. the background prefetch) may have covered this range.
-            if (isCached(start, end)) return
+            // `force` bypasses this so callers can explicitly re-fetch an already-cached
+            // range (e.g. to pick up a mutation) without wiping the whole cache first.
+            if (!force && isCached(start, end)) return
+            val group = _state.value.activeGroup
             val flag = if (background) "bg" else "fg"
             _state.update { if (flag == "bg") it.copy(isBackgroundCaching = true) else it.copy(isLoading = true, error = null) }
-            runCatching { repository.fetchEvents(start, end) }
-                .onSuccess { mergeIntoCache(it, start, end); refreshFromCache() }
+            runCatching {
+                if (group != null) decorateGroup(repository.fetchGroupCombined(group.id, start, end)) to emptyList<SyncError>()
+                else repository.fetchEvents(start, end).let { it.events to it.errors }
+            }
+                .onSuccess { (events, errors) ->
+                    val (keepKeys, keepSources) = failedCalendarKeys(errors)
+                    mergeIntoCache(events, start, end, keepKeys, keepSources)
+                    refreshFromCache()
+                    _state.update { it.copy(syncErrors = errors) }
+                }
                 .onFailure { e -> if (!background) _state.update { it.copy(error = e.message) } }
             _state.update { it.copy(isLoading = false, isBackgroundCaching = false) }
         }
     }
 
+    /** Prefix combined-view events with the owner's / creator's first name (and 👥 for group events). */
+    private fun decorateGroup(events: List<CalEvent>): List<CalEvent> {
+        val me = currentUserId
+        return events.map { ev ->
+            // Prefer the server-decorated title (group icon + owner prefix) so
+            // web, iOS and Android render identically; fall back for old servers.
+            val serverTitle = ev.displayTitle?.takeIf { it.isNotEmpty() }
+            if (serverTitle != null) return@map ev.copy(title = serverTitle)
+            val prefix = when {
+                ev.isGroupEvent && ev.creator != null && ev.creator.id != me -> "${firstName(ev.creator.displayName)}: "
+                ev.owner != null && ev.owner.id != me -> "${firstName(ev.owner.displayName)}: "
+                else -> ""
+            }
+            if (prefix.isEmpty()) ev else ev.copy(title = prefix + ev.title)
+        }
+    }
+
+    private fun firstName(s: String): String = s.trim().substringBefore(' ').ifBlank { s }
+
     private fun markReady() {
         _ready.value = true
     }
@@ -212,21 +366,75 @@ class CalendarViewModel @Inject constructor(
         return !cs.isAfter(start) && !ce.isBefore(end)
     }
 
-    private fun mergeIntoCache(newEvents: List<CalEvent>, rangeStart: Instant, rangeEnd: Instant) {
-        val retained = allCachedEvents.filter {
-            !it.startDate.isBefore(rangeEnd) || !it.endDate.isAfter(rangeStart)
+    /**
+     * Split sync errors into per-calendar keys and whole sources whose cached
+     * events must NOT be evicted on a partial sync — stale data beats an empty
+     * calendar. An error carrying a calendar_id protects just that calendar; an
+     * account-level error without one (e.g. an HA / Google token-refresh
+     * failure, which aborts the whole account fetch) protects every cached
+     * calendar of that source.
+     */
+    private fun failedCalendarKeys(errors: List<SyncError>): Pair<Set<String>, Set<String>> {
+        val keys = mutableSetOf<String>()
+        val sources = mutableSetOf<String>()
+        for (err in errors) {
+            val cid = err.calendarId
+            if (cid != null) keys.add(calendarKey(err.source, cid.toString()))
+            else sources.add(err.source)
+        }
+        return keys to sources
+    }
+
+    private fun mergeIntoCache(
+        newEvents: List<CalEvent>, rangeStart: Instant, rangeEnd: Instant,
+        keepKeysInRange: Set<String> = emptySet(),
+        keepSourcesInRange: Set<String> = emptySet(),
+    ) {
+        // Remove old events in the fetched range to avoid duplicates — but
+        // PRESERVE events from calendars / sources that had sync errors so a
+        // transient CalDAV / Google / HA failure doesn't wipe the visible calendar.
+        val retained = allCachedEvents.filter { ev ->
+            val outsideRange = !ev.startDate.isBefore(rangeEnd) || !ev.endDate.isAfter(rangeStart)
+            when {
+                outsideRange -> true
+                ev.source in keepSourcesInRange -> true
+                keepKeysInRange.isEmpty() -> false
+                else -> calendarKey(ev.source, ev.calendarId) in keepKeysInRange
+            }
         }
         allCachedEvents = retained + newEvents
-        cachedStart = cachedStart?.let { minOf(it, rangeStart) } ?: rangeStart
-        cachedEnd = cachedEnd?.let { maxOf(it, rangeEnd) } ?: rangeEnd
+        // Only extend the cached range on a fully clean fetch. When some
+        // calendars/sources failed, leave cachedStart/End unchanged so
+        // isCached() stays false and they're retried on the next load rather
+        // than being silently treated as "done" with empty data.
+        if (keepKeysInRange.isEmpty() && keepSourcesInRange.isEmpty()) {
+            cachedStart = cachedStart?.let { minOf(it, rangeStart) } ?: rangeStart
+            cachedEnd = cachedEnd?.let { maxOf(it, rangeEnd) } ?: rangeEnd
+        }
     }
 
     private fun refreshFromCache() {
-        val hidden = _state.value.hiddenKeys
-        val banished = _state.value.banishedKeys
-        val visible = allCachedEvents.filter { ev ->
-            val key = calendarKey(ev.source, ev.calendarId)
-            key !in hidden && key !in banished
+        val st = _state.value
+        // In group mode: server scopes/filters by privacy; locally honour the
+        // per-member / group-calendar hide toggles (hiddenGroupKeys).
+        val visible = if (st.activeGroup != null) {
+            val hg = st.hiddenGroupKeys
+            if (hg.isEmpty()) allCachedEvents
+            else allCachedEvents.filter { ev ->
+                when {
+                    ev.isGroupEvent -> GROUP_CALENDAR_KEY !in hg
+                    ev.owner != null -> groupMemberKey(ev.owner.id ?: -1) !in hg
+                    else -> true
+                }
+            }
+        } else {
+            val hidden = st.hiddenKeys
+            val banished = st.banishedKeys
+            if (hidden.isEmpty() && banished.isEmpty()) allCachedEvents
+            else allCachedEvents.filter { ev ->
+                val key = calendarKey(ev.source, ev.calendarId)
+                key !in hidden && key !in banished
+            }
         }
         // Skip the state write (and resulting recomposition) when nothing changed.
         _state.update { if (it.events == visible) it else it.copy(events = visible) }
@@ -240,11 +448,61 @@ class CalendarViewModel @Inject constructor(
 
     fun syncWithServer() {
         invalidateCache()
-        initialLoad()
+        loadGroups()
+        initialLoad(reconcile = true)
+    }
+
+    /**
+     * Called when the app returns to the foreground. Re-checks the server's
+     * per-calendar visibility (a calendar may have been hidden/shown on the web
+     * or another device meanwhile) and reloads only if something changed.
+     */
+    fun onAppResumed() {
+        viewModelScope.launch {
+            if (reconcileCalendarVisibility()) {
+                invalidateCache()
+                loadGroups()
+                initialLoad(reconcile = false) // just reconciled above
+            }
+        }
+    }
+
+    /**
+     * Reconcile the local **banished** set with the server's per-calendar
+     * `sidebar_hidden` flags for external calendars (CalDAV / Google / HA).
+     * Returns `true` if the set changed, so the caller can force a refetch — a
+     * calendar re-enabled on the web has NO events in the cache (the server
+     * excludes a hidden calendar's events entirely).
+     *
+     * NOTE: This deliberately drives `banishedKeys`, NOT `hiddenKeys`. The
+     * quick-hide (`hiddenKeys`) is a device-local filter and must never be
+     * overwritten from the server; only the "banish / permanently hide" state
+     * maps to the server's `sidebar_hidden` (mirrors iOS).
+     */
+    private suspend fun reconcileCalendarVisibility(): Boolean {
+        val caldav = runCatching { repository.getCalDAVAccounts() }.getOrDefault(emptyList())
+        val google = runCatching { repository.getGoogleAccounts() }.getOrDefault(emptyList())
+        val ha = runCatching { repository.getHomeAssistantAccounts() }.getOrDefault(emptyList())
+
+        val banished = settingsStore.banishedCalendarKeys.toMutableSet()
+        fun apply(source: String, id: Int, serverHidden: Boolean) {
+            val key = calendarKey(source, id.toString())
+            if (serverHidden) banished.add(key) else banished.remove(key)
+        }
+        caldav.forEach { acc -> acc.calendars?.forEach { apply("caldav", it.id, it.sidebarHidden) } }
+        google.forEach { acc -> acc.calendars?.forEach { apply("google", it.id, it.sidebarHidden) } }
+        ha.forEach { acc -> acc.calendars?.forEach { apply("homeassistant", it.id, it.sidebarHidden) } }
+
+        if (banished == settingsStore.banishedCalendarKeys) return false
+        settingsStore.banishedCalendarKeys = banished
+        _state.update { it.copy(banishedKeys = banished) }
+        return true
     }
 
     fun clearError() = _state.update { it.copy(error = null) }
 
+    fun clearSyncErrors() = _state.update { it.copy(syncErrors = emptyList()) }
+
     // ---- Visibility filters ----
 
     fun setCalendarHidden(key: String, hidden: Boolean) {
@@ -262,6 +520,98 @@ class CalendarViewModel @Inject constructor(
         refreshFromCache()
     }
 
+    /** Distinct calendars present in the full cache, IGNORING the device-local
+     *  quick-hide filter but excluding banished ones — for the filter sheet, so
+     *  a locally hidden calendar still appears there and can be toggled back on. */
+    fun knownCalendars(): List<CalEvent> {
+        val banished = _state.value.banishedKeys
+        return allCachedEvents
+            .distinctBy { calendarKey(it.source, it.calendarId) }
+            .filter { calendarKey(it.source, it.calendarId) !in banished }
+    }
+
+    /**
+     * Load the full calendar list across all sources into [CalendarUiState.allCalendars]
+     * so the filter shows every calendar, even ones with no events in the loaded
+     * range. Called when the filter sheet opens. Read-only flag for shared local
+     * calendars from owned/permission; banished calendars are dropped.
+     */
+    fun loadAllCalendars() {
+        viewModelScope.launch {
+            val banished = _state.value.banishedKeys
+            val entries = mutableListOf<CalendarFilterEntry>()
+            runCatching { repository.getLocalCalendars() }.getOrDefault(emptyList()).forEach { c ->
+                entries += CalendarFilterEntry(
+                    key = calendarKey("local", c.id.toString()),
+                    name = if (c.owned) c.name else (c.sharedBy ?: c.name),
+                    color = c.color,
+                    source = "local",
+                    readOnly = !c.owned && c.permission != "read_write",
+                )
+            }
+            runCatching { repository.getCalDAVAccounts() }.getOrDefault(emptyList()).forEach { acc ->
+                acc.calendars.orEmpty().forEach { c ->
+                    entries += CalendarFilterEntry(calendarKey("caldav", c.id.toString()), c.name, c.color ?: acc.color, "caldav")
+                }
+            }
+            runCatching { repository.getGoogleAccounts() }.getOrDefault(emptyList()).forEach { acc ->
+                acc.calendars.orEmpty().forEach { c ->
+                    entries += CalendarFilterEntry(calendarKey("google", c.id.toString()), c.name, c.color ?: "#4285f4", "google")
+                }
+            }
+            runCatching { repository.getHomeAssistantAccounts() }.getOrDefault(emptyList()).forEach { acc ->
+                acc.calendars.orEmpty().forEach { c ->
+                    entries += CalendarFilterEntry(calendarKey("homeassistant", c.id.toString()), c.name, c.color ?: "#46bdc6", "homeassistant")
+                }
+            }
+            runCatching { repository.getICalSubscriptions() }.getOrDefault(emptyList()).forEach { s ->
+                entries += CalendarFilterEntry(calendarKey("ical", s.id.toString()), s.name, s.color, "ical")
+            }
+            _state.update { st -> st.copy(allCalendars = entries.filter { it.key !in banished }) }
+        }
+    }
+
+    /** The user's single birthday calendar, or null if not activated yet. */
+    suspend fun birthdayCalendar(): LocalCalendar? =
+        runCatching { repository.getLocalCalendars() }.getOrDefault(emptyList())
+            .firstOrNull { it.isBirthday && it.owned }
+
+    /** The birthday calendar, creating the single one (named [name]) if none. */
+    suspend fun ensureBirthdayCalendar(name: String): LocalCalendar? {
+        birthdayCalendar()?.let { return it }
+        return runCatching {
+            repository.addLocalCalendar(name, "#E0407F", isBirthday = true)
+        }.getOrNull()
+    }
+
+    /**
+     * Create a manual birthday: an all-day, yearly-recurring local event whose
+     * age suffix and cake icon are added server-side. When the year is unknown
+     * we anchor to 1970 and send no birth_year (so no age is shown).
+     */
+    fun createBirthday(
+        calendarId: Int, name: String, date: LocalDate, yearKnown: Boolean, onDone: () -> Unit,
+    ) {
+        viewModelScope.launch {
+            val anchor = LocalDate.of(if (yearKnown) date.year else 1970, date.monthValue, date.dayOfMonth)
+            val start = Dates.startOfDay(anchor)
+            val end = Dates.startOfDay(anchor.plusDays(1))
+            runCatching {
+                repository.createLocalEvent(
+                    calendarId, name, start, end, isAllDay = true,
+                    location = "", description = "", color = null,
+                    rrule = "FREQ=YEARLY", birthYear = if (yearKnown) date.year else null,
+                )
+            }.onSuccess { loadVisible(force = true); onDone() }
+        }
+    }
+
+    /**
+     * Banish ("permanently hide") a calendar, or lift the banish. Unlike the
+     * quick-hide, this DOES sync to the server (`sidebar_hidden`/`enabled`) for
+     * external calendars, matching iOS. Banishing also clears any local
+     * quick-hide flag for the same key (redundant once banished).
+     */
     fun setCalendarBanished(key: String, banished: Boolean) {
         val nextBanished = _state.value.banishedKeys.toMutableSet().apply {
             if (banished) add(key) else remove(key)
@@ -273,6 +623,70 @@ class CalendarViewModel @Inject constructor(
         settingsStore.hiddenCalendarKeys = nextHidden
         _state.update { it.copy(banishedKeys = nextBanished, hiddenKeys = nextHidden) }
         refreshFromCache()
+
+        val parts = key.split(":")
+        val source = parts.getOrNull(0)
+        val id = parts.getOrNull(1)?.toIntOrNull()
+        if (source != null && id != null && source in listOf("caldav", "google", "homeassistant")) {
+            viewModelScope.launch {
+                runCatching { repository.setCalendarSidebarHidden(source, id, banished) }
+                    .onFailure { e -> _state.update { it.copy(error = e.message ?: "Fehler beim Speichern") } }
+                // Un-banishing re-enables the calendar on the server, but its
+                // events were excluded while hidden — force a refetch so they
+                // reappear without a manual sync.
+                if (!banished) {
+                    invalidateCache()
+                    initialLoad(reconcile = false)
+                }
+            }
+        }
+    }
+
+    // ---- Groups ----
+
+    fun loadGroups() {
+        viewModelScope.launch {
+            runCatching { repository.getGroups() }
+                .onSuccess { gs ->
+                    _state.update { st ->
+                        // If the active group was deleted elsewhere, drop back to personal.
+                        val stillActive = st.activeGroup?.let { a -> gs.firstOrNull { it.id == a.id } }
+                        st.copy(groups = gs, activeGroup = stillActive)
+                    }
+                }
+        }
+    }
+
+    /** Flip between personal and a group's combined overlay; reloads the wide window. */
+    fun switchGroup(group: Group?) {
+        if (_state.value.activeGroup?.id == group?.id) return
+        _state.update {
+            it.copy(activeGroup = group, hiddenGroupKeys = emptySet(), activeGroupMembers = emptyList())
+        }
+        invalidateCache()
+        initialLoad()
+        // Load the full member list (with server colours) for the filter sheet.
+        if (group != null) {
+            viewModelScope.launch {
+                runCatching { repository.getGroup(group.id) }
+                    .onSuccess { g -> _state.update { it.copy(activeGroupMembers = g.members) } }
+            }
+        }
+    }
+
+    /** Toggle a single member's calendar / the group calendar in the overlay. */
+    fun setGroupKeyHidden(key: String, hidden: Boolean) {
+        _state.update {
+            val next = it.hiddenGroupKeys.toMutableSet().apply { if (hidden) add(key) else remove(key) }
+            it.copy(hiddenGroupKeys = next)
+        }
+        refreshFromCache()
+    }
+
+    /** Replace the group-overlay hidden set (bulk show/hide all). */
+    fun setHiddenGroupKeys(keys: Set<String>) {
+        _state.update { it.copy(hiddenGroupKeys = keys) }
+        refreshFromCache()
     }
 
     // ---- Writable calendars ----
@@ -286,9 +700,23 @@ class CalendarViewModel @Inject constructor(
 
     // ---- Event mutations ----
 
+    /**
+     * Re-fetch just the already-cached range after a create/update so the edit is
+     * reflected everywhere it's currently loaded, without nuking and reloading the
+     * whole ±cacheMonths window (which caused a full-screen freeze on every save).
+     * Falls back to [initialLoad] if nothing was cached yet.
+     */
     private fun afterMutation() {
-        invalidateCache()
-        initialLoad()
+        val start = cachedStart
+        val end = cachedEnd
+        if (start == null || end == null) {
+            initialLoad()
+            return
+        }
+        viewModelScope.launch {
+            loadRange(start, end, background = false, force = true)
+            markReady()
+        }
     }
 
     fun saveEvent(
@@ -302,20 +730,21 @@ class CalendarViewModel @Inject constructor(
         description: String,
         color: String?,
         isPrivate: Boolean,
+        reminders: List<Int> = emptyList(),
         onResult: (String?) -> Unit,
     ) {
         viewModelScope.launch {
             val result = runCatching {
                 if (existing != null && existing.source == calendar.source) {
                     when (existing.source) {
-                        "local" -> repository.updateLocalEvent(existing.id, title, start, end, isAllDay, location, description, color, isPrivate)
+                        "local" -> repository.updateLocalEvent(existing.id, title, start, end, isAllDay, location, description, color, isPrivate, reminders)
                         "caldav" -> repository.updateCalDAVEvent(existing.id, existing.url, calendar.numericId, title, start, end, isAllDay, location, description, color)
                         "homeassistant" -> repository.updateHAEvent(calendar.numericId, existing.id, title, start, end, isAllDay, location, description)
                         "google" -> repository.updateGoogleEvent(calendar.numericId, existing.id, title, start, end, isAllDay, location, description)
-                        else -> createForSource(calendar, title, start, end, isAllDay, location, description, color, isPrivate)
+                        else -> createForSource(calendar, title, start, end, isAllDay, location, description, color, isPrivate, reminders)
                     }
                 } else {
-                    createForSource(calendar, title, start, end, isAllDay, location, description, color, isPrivate)
+                    createForSource(calendar, title, start, end, isAllDay, location, description, color, isPrivate, reminders)
                 }
             }
             result.onSuccess { afterMutation(); onResult(null) }
@@ -326,9 +755,10 @@ class CalendarViewModel @Inject constructor(
     private suspend fun createForSource(
         calendar: WritableCalendar, title: String, start: Instant, end: Instant,
         isAllDay: Boolean, location: String, description: String, color: String?, isPrivate: Boolean,
+        reminders: List<Int> = emptyList(),
     ) {
         when (calendar.source) {
-            "local" -> repository.createLocalEvent(calendar.numericId, title, start, end, isAllDay, location, description, color, isPrivate)
+            "local" -> repository.createLocalEvent(calendar.numericId, title, start, end, isAllDay, location, description, color, isPrivate, reminders)
             "caldav" -> repository.createCalDAVEvent(calendar.numericId, title, start, end, isAllDay, location, description, color)
             "google" -> repository.createGoogleEvent(calendar.numericId, title, start, end, isAllDay, location, description)
             "homeassistant" -> repository.createHAEvent(calendar.numericId, title, start, end, isAllDay, location, description)

app/src/main/java/com/scarriffle/calendarr/ui/calendar/DayPreviewDialog.kt

@@ -0,0 +1,255 @@
+package com.scarriffle.calendarr.ui.calendar
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.CalendarViewWeek
+import androidx.compose.material.icons.filled.WbSunny
+import androidx.compose.material3.Divider
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.geometry.CornerRadius
+import androidx.compose.ui.geometry.RoundRect
+import androidx.compose.ui.geometry.Size
+import androidx.compose.ui.geometry.toRect
+import androidx.compose.ui.graphics.Outline
+import androidx.compose.ui.graphics.Path
+import androidx.compose.ui.graphics.Shape
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.Density
+import androidx.compose.ui.unit.LayoutDirection
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import androidx.compose.ui.window.Dialog
+import com.scarriffle.calendarr.domain.model.CalEvent
+import com.scarriffle.calendarr.ui.L10n
+import com.scarriffle.calendarr.ui.LocalLang
+import com.scarriffle.calendarr.ui.tr
+import com.scarriffle.calendarr.util.colorFromHex
+import com.scarriffle.calendarr.util.contrastingTextColor
+import java.time.LocalDate
+import java.time.format.TextStyle
+
+/**
+ * Long-press day preview (mirrors the iOS DayContextPreviewView): all-day
+ * events as colored bars with tapered ends when they continue beyond this day,
+ * timed events as dot + time + title rows, followed by quick actions.
+ */
+@Composable
+fun DayPreviewDialog(
+    date: LocalDate,
+    events: List<CalEvent>,
+    onDismiss: () -> Unit,
+    onEventClick: (CalEvent) -> Unit,
+    onCreateEvent: () -> Unit,
+    onOpenDay: () -> Unit,
+    onOpenWeek: () -> Unit,
+) {
+    val lang = LocalLang.current
+    val sorted = remember(events) {
+        events.sortedWith(compareByDescending<CalEvent> { it.isAllDay }.thenBy { it.startDate })
+    }
+    val weekdayAbbr = remember(date, lang) {
+        date.dayOfWeek.getDisplayName(TextStyle.SHORT, L10n.locale(lang)).uppercase()
+    }
+
+    Dialog(onDismissRequest = onDismiss) {
+        Surface(
+            shape = RoundedCornerShape(20.dp),
+            color = MaterialTheme.colorScheme.surface,
+            tonalElevation = 3.dp,
+        ) {
+            Column(
+                Modifier
+                    .width(290.dp)
+                    .padding(vertical = 14.dp)
+                    .verticalScroll(rememberScrollState()),
+            ) {
+                Row(
+                    Modifier.padding(horizontal = 16.dp),
+                    verticalAlignment = Alignment.Bottom,
+                ) {
+                    Text(
+                        weekdayAbbr,
+                        style = MaterialTheme.typography.labelMedium,
+                        fontWeight = FontWeight.SemiBold,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.padding(end = 6.dp, bottom = 3.dp),
+                    )
+                    Text(
+                        "${date.dayOfMonth}",
+                        style = MaterialTheme.typography.headlineSmall,
+                        fontWeight = FontWeight.Bold,
+                    )
+                }
+                Divider(Modifier.padding(horizontal = 16.dp, vertical = 8.dp))
+
+                if (sorted.isEmpty()) {
+                    Text(
+                        tr("cal.no_events_day"),
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.onSurfaceVariant,
+                        modifier = Modifier.padding(horizontal = 16.dp, vertical = 4.dp),
+                    )
+                } else {
+                    sorted.forEach { ev ->
+                        if (ev.isAllDay) {
+                            AllDayPreviewBar(event = ev, date = date, onClick = { onEventClick(ev) })
+                        } else {
+                            TimedPreviewRow(event = ev, lang = lang, onClick = { onEventClick(ev) })
+                        }
+                    }
+                }
+
+                Divider(Modifier.padding(horizontal = 16.dp, vertical = 8.dp))
+                PreviewAction(Icons.Filled.Add, tr("cal.new_event"), onCreateEvent)
+                PreviewAction(Icons.Filled.CalendarViewWeek, tr("cal.show_in_week_view"), onOpenWeek)
+                PreviewAction(Icons.Filled.WbSunny, tr("cal.show_in_day_view"), onOpenDay)
+            }
+        }
+    }
+}
+
+@Composable
+private fun AllDayPreviewBar(event: CalEvent, date: LocalDate, onClick: () -> Unit) {
+    val color = colorFromHex(event.effectiveColor)
+    val startDay = localDate(event.startDate)
+    val lastDay = localDate(event.endDate.minusSeconds(1)) // all-day end is exclusive
+    val cLeft = startDay.isBefore(date)
+    val cRight = lastDay.isAfter(date)
+    val shape = remember(cLeft, cRight) { ChevronBarShape(cLeft, cRight) }
+
+    Box(
+        Modifier
+            .fillMaxWidth()
+            .padding(horizontal = 16.dp, vertical = 2.dp)
+            .clip(shape)
+            .background(color)
+            .clickable(onClick = onClick)
+            .padding(
+                start = if (cLeft) 14.dp else 8.dp,
+                end = if (cRight) 14.dp else 8.dp,
+                top = 4.dp,
+                bottom = 4.dp,
+            ),
+    ) {
+        EventLabel(
+            event = event,
+            color = color.contrastingTextColor(),
+            fontSize = 12.sp,
+            fontWeight = FontWeight.Medium,
+        )
+    }
+}
+
+@Composable
+private fun TimedPreviewRow(event: CalEvent, lang: String, onClick: () -> Unit) {
+    Row(
+        Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp, vertical = 4.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Box(
+            Modifier
+                .size(7.dp)
+                .clip(CircleShape)
+                .background(colorFromHex(event.effectiveColor)),
+        )
+        Text(
+            timeLabel(event.startDate, lang),
+            fontSize = 12.sp,
+            color = MaterialTheme.colorScheme.onSurfaceVariant,
+            modifier = Modifier.padding(start = 8.dp).width(42.dp),
+        )
+        EventLabel(
+            event = event,
+            color = MaterialTheme.colorScheme.onSurface,
+            fontSize = 12.sp,
+            fontWeight = FontWeight.Medium,
+            modifier = Modifier.weight(1f),
+        )
+    }
+}
+
+@Composable
+private fun PreviewAction(icon: ImageVector, label: String, onClick: () -> Unit) {
+    Row(
+        Modifier
+            .fillMaxWidth()
+            .clickable(onClick = onClick)
+            .padding(horizontal = 16.dp, vertical = 9.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Icon(
+            icon,
+            contentDescription = null,
+            modifier = Modifier.size(18.dp),
+            tint = MaterialTheme.colorScheme.onSurfaceVariant,
+        )
+        Spacer(Modifier.width(12.dp))
+        Text(label, style = MaterialTheme.typography.bodyMedium)
+    }
+}
+
+/**
+ * Bar shape with tapered (pointed) ends on the sides where the event continues
+ * beyond the shown day — port of the iOS ChevronBarShape.
+ */
+private class ChevronBarShape(
+    private val continuesLeft: Boolean,
+    private val continuesRight: Boolean,
+) : Shape {
+    override fun createOutline(size: Size, layoutDirection: LayoutDirection, density: Density): Outline {
+        val r = with(density) { 4.dp.toPx() }
+        if (!continuesLeft && !continuesRight) {
+            return Outline.Rounded(RoundRect(size.toRect(), CornerRadius(r)))
+        }
+        val t = with(density) { 8.dp.toPx() }.coerceAtMost(size.width / 2)
+        val p = Path()
+        if (continuesLeft && continuesRight) {
+            p.moveTo(t, 0f)
+            p.lineTo(size.width - t, 0f)
+            p.lineTo(size.width, size.height / 2)
+            p.lineTo(size.width - t, size.height)
+            p.lineTo(t, size.height)
+            p.lineTo(0f, size.height / 2)
+        } else if (continuesLeft) {
+            p.moveTo(t, 0f)
+            p.lineTo(size.width, 0f)
+            p.lineTo(size.width, size.height)
+            p.lineTo(t, size.height)
+            p.lineTo(0f, size.height / 2)
+        } else {
+            p.moveTo(0f, 0f)
+            p.lineTo(size.width - t, 0f)
+            p.lineTo(size.width, size.height / 2)
+            p.lineTo(size.width - t, size.height)
+            p.lineTo(0f, size.height)
+        }
+        p.close()
+        return Outline.Generic(p)
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/calendar/EventLabel.kt

@@ -0,0 +1,57 @@
+package com.scarriffle.calendarr.ui.calendar
+
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Cake
+import androidx.compose.material3.Icon
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.dp
+import androidx.compose.ui.unit.sp
+import com.scarriffle.calendarr.domain.model.CalEvent
+
+/**
+ * Event label for the calendar grids: an optional leading cake icon for
+ * birthday events, followed by the render title (which carries the
+ * server-computed age). The icon inherits the text colour/size so the label
+ * matches whatever bar it's dropped into.
+ */
+@Composable
+fun EventLabel(
+    event: CalEvent,
+    color: Color,
+    fontSize: TextUnit = 10.sp,
+    fontWeight: FontWeight = FontWeight.Medium,
+    maxLines: Int = 1,
+    modifier: Modifier = Modifier,
+) {
+    Row(verticalAlignment = Alignment.CenterVertically, modifier = modifier) {
+        if (event.isBirthday) {
+            Icon(
+                Icons.Filled.Cake,
+                contentDescription = null,
+                tint = color,
+                modifier = Modifier
+                    .size(fontSize.value.dp)
+                    .padding(end = 2.dp),
+            )
+        }
+        Text(
+            event.renderTitle,
+            maxLines = maxLines,
+            overflow = TextOverflow.Ellipsis,
+            fontSize = fontSize,
+            fontWeight = fontWeight,
+            color = color,
+            modifier = Modifier.weight(1f, fill = false),
+        )
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/calendar/MonthView.kt

@@ -16,6 +16,8 @@ import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
@@ -62,7 +64,8 @@ private const val MAX_LANES = 4
 private val DAY_NUM_H = 22.dp
 private val LANE_H = 15.dp
 private val LANE_SPACE = 2.dp
-private val ROW_HEIGHT = DAY_NUM_H + (LANE_H + LANE_SPACE) * MAX_LANES + 6.dp
+// Bottom strip must fit the 8sp "+N"/"KW" labels without event bars overlapping them.
+private val ROW_HEIGHT = DAY_NUM_H + (LANE_H + LANE_SPACE) * MAX_LANES + 16.dp
 
 private enum class DividerEdge { NONE, TOP, BOTTOM }
 
@@ -78,7 +81,10 @@ private data class PlacedBar(
 
 private class WeekLayout(val bars: List<PlacedBar>, val overflowPerCol: IntArray)
 
-/** Continuous, vertically scrolling month calendar with multi-day event bars (iOS-style). */
+/** Month calendar with multi-day event bars (iOS-style). Two modes: a
+ *  continuous vertical scroll feed, or a horizontally-paged one-month-per-screen
+ *  grid (swipe left/right), toggled by [CalendarUiState.monthViewPaged]. */
+@OptIn(ExperimentalFoundationApi::class)
 @Composable
 fun MonthView(
     state: CalendarUiState,
@@ -97,11 +103,14 @@ fun MonthView(
     val mondayFirst = state.weekStartsOnMonday
     val today = LocalDate.now()
 
-    val dividerColor = colorFromHex(settings.monthDividerColor, Color(0xFF7090C0))
-    val labelColor = colorFromHex(settings.monthLabelColor, MaterialTheme.colorScheme.onSurfaceVariant)
-    val gridColor = MaterialTheme.colorScheme.outline.copy(alpha = gridLineOpacity(settings.lineContrast))
-    val secondaryText = MaterialTheme.colorScheme.onBackground.copy(alpha = secondaryTextOpacity(settings.textContrast))
-    val todayColor = colorFromHex(settings.todayColor)
+    val fallbackLabel = MaterialTheme.colorScheme.onSurfaceVariant
+    val outline = MaterialTheme.colorScheme.outline
+    val onBackground = MaterialTheme.colorScheme.onBackground
+    val dividerColor = remember(settings.monthDividerColor) { colorFromHex(settings.monthDividerColor, Color(0xFF7090C0)) }
+    val labelColor = remember(settings.monthLabelColor, fallbackLabel) { colorFromHex(settings.monthLabelColor, fallbackLabel) }
+    val gridColor = remember(outline, settings.lineContrast) { outline.copy(alpha = gridLineOpacity(settings.lineContrast)) }
+    val secondaryText = remember(onBackground, settings.textContrast) { onBackground.copy(alpha = secondaryTextOpacity(settings.textContrast)) }
+    val todayColor = remember(settings.todayColor) { colorFromHex(settings.todayColor) }
 
     // Column width measured once → no per-row BoxWithConstraints (smooth scrolling).
     val density = LocalDensity.current
@@ -123,28 +132,58 @@ fun MonthView(
 
     val todayIndex = remember(firstVisible) { weekIndexOf(today) }
 
-    LaunchedEffect(Unit) { listState.scrollToItem((todayIndex - 1).coerceAtLeast(0)) }
-    LaunchedEffect(scrollToTodaySignal) {
-        if (scrollToTodaySignal > 0) listState.animateScrollToItem((todayIndex - 1).coerceAtLeast(0))
-    }
-    LaunchedEffect(monthJumpSignal) {
-        if (monthJumpSignal > 0 && monthJumpTarget != null) {
-            listState.animateScrollToItem(weekIndexOf(monthJumpTarget.withDayOfMonth(1)))
-        }
-    }
-    LaunchedEffect(listState, weekCount) {
-        snapshotFlow { listState.firstVisibleItemIndex }
-            .map { firstVisible.plusWeeks(it.toLong()).plusDays(3).withDayOfMonth(1) }
-            .distinctUntilChanged()
-            .collect { month ->
-                onVisibleMonthChange(month)
-                vm.ensureMonthLoaded(month)
-            }
-    }
+    // Month-paged mode bookkeeping (one page per calendar month).
+    val firstMonth = remember { today.withDayOfMonth(1).minusMonths(MONTHS_BACK) }
+    val monthCount = remember { (MONTHS_BACK + MONTHS_AHEAD + 1).toInt() }
+    fun monthIndexOf(date: LocalDate): Int =
+        ChronoUnit.MONTHS.between(firstMonth, date.withDayOfMonth(1)).toInt().coerceIn(0, monthCount - 1)
+    val todayMonthIndex = remember(firstMonth) { monthIndexOf(today) }
+    val pagerState = rememberPagerState(initialPage = todayMonthIndex) { monthCount }
 
     val eventsByWeek = remember(state.events, mondayFirst) { buildEventsByWeek(state.events, mondayFirst) }
     val dimPast = settings.dimPastEvents
-    val now = java.time.Instant.now()
+    val cwLabel = tr("cal.cw")
+    // remember: a fresh Instant per recomposition would invalidate every visible
+    // WeekRow (the main source of scroll jank); minute precision is plenty here.
+    val now = remember { java.time.Instant.now() }
+
+    // Route the title / prev-next / today signals to the active surface (pager or list).
+    if (state.monthViewPaged) {
+        LaunchedEffect(scrollToTodaySignal) {
+            if (scrollToTodaySignal > 0) pagerState.animateScrollToPage(todayMonthIndex)
+        }
+        LaunchedEffect(monthJumpSignal) {
+            if (monthJumpSignal > 0 && monthJumpTarget != null) pagerState.animateScrollToPage(monthIndexOf(monthJumpTarget))
+        }
+        LaunchedEffect(pagerState) {
+            snapshotFlow { pagerState.currentPage }
+                .map { firstMonth.plusMonths(it.toLong()) }
+                .distinctUntilChanged()
+                .collect { month ->
+                    onVisibleMonthChange(month)
+                    vm.ensureMonthLoaded(month)
+                }
+        }
+    } else {
+        LaunchedEffect(Unit) { listState.scrollToItem((todayIndex - 1).coerceAtLeast(0)) }
+        LaunchedEffect(scrollToTodaySignal) {
+            if (scrollToTodaySignal > 0) listState.animateScrollToItem((todayIndex - 1).coerceAtLeast(0))
+        }
+        LaunchedEffect(monthJumpSignal) {
+            if (monthJumpSignal > 0 && monthJumpTarget != null) {
+                listState.animateScrollToItem(weekIndexOf(monthJumpTarget.withDayOfMonth(1)))
+            }
+        }
+        LaunchedEffect(listState, weekCount) {
+            snapshotFlow { listState.firstVisibleItemIndex }
+                .map { firstVisible.plusWeeks(it.toLong()).plusDays(3).withDayOfMonth(1) }
+                .distinctUntilChanged()
+                .collect { month ->
+                    onVisibleMonthChange(month)
+                    vm.ensureMonthLoaded(month)
+                }
+        }
+    }
 
     Column(Modifier.fillMaxSize()) {
         Row(Modifier.fillMaxWidth().padding(vertical = 3.dp)) {
@@ -159,29 +198,66 @@ fun MonthView(
             }
         }
 
-        LazyColumn(
-            state = listState,
-            modifier = Modifier.fillMaxSize().onSizeChanged { gridWidthPx = it.width },
-        ) {
-            items(weekCount) { index ->
-                val weekStart = firstVisible.plusWeeks(index.toLong())
-                WeekRow(
-                    weekStart = weekStart,
-                    today = today,
-                    weekEvents = eventsByWeek[weekStart] ?: emptyList(),
-                    cellW = cellW,
-                    dimPast = dimPast,
-                    now = now,
-                    lang = lang,
-                    dividerColor = dividerColor,
-                    gridColor = gridColor,
-                    labelColor = labelColor,
-                    secondaryText = secondaryText,
-                    todayColor = todayColor,
-                    onDayClick = onDayClick,
-                    onDayLongPress = onDayLongPress,
-                    onEventClick = onEventClick,
-                )
+        if (state.monthViewPaged) {
+            // One month per page, six height-filling week rows, swipe to change month.
+            HorizontalPager(
+                state = pagerState,
+                modifier = Modifier.fillMaxSize().onSizeChanged { gridWidthPx = it.width },
+            ) { page ->
+                val month = firstMonth.plusMonths(page.toLong())
+                val firstWeek = startOfWeek(month.withDayOfMonth(1), mondayFirst)
+                Column(Modifier.fillMaxSize()) {
+                    repeat(6) { w ->
+                        val weekStart = firstWeek.plusWeeks(w.toLong())
+                        WeekRow(
+                            rowModifier = Modifier.fillMaxWidth().weight(1f),
+                            weekStart = weekStart,
+                            today = today,
+                            weekEvents = eventsByWeek[weekStart] ?: emptyList(),
+                            cellW = cellW,
+                            dimPast = dimPast,
+                            now = now,
+                            lang = lang,
+                            cwLabel = cwLabel,
+                            dividerColor = dividerColor,
+                            gridColor = gridColor,
+                            labelColor = labelColor,
+                            secondaryText = secondaryText,
+                            todayColor = todayColor,
+                            onDayClick = onDayClick,
+                            onDayLongPress = onDayLongPress,
+                            onEventClick = onEventClick,
+                        )
+                    }
+                }
+            }
+        } else {
+            LazyColumn(
+                state = listState,
+                modifier = Modifier.fillMaxSize().onSizeChanged { gridWidthPx = it.width },
+            ) {
+                items(weekCount, key = { it }, contentType = { "week" }) { index ->
+                    val weekStart = firstVisible.plusWeeks(index.toLong())
+                    WeekRow(
+                        rowModifier = Modifier.fillMaxWidth().height(ROW_HEIGHT),
+                        weekStart = weekStart,
+                        today = today,
+                        weekEvents = eventsByWeek[weekStart] ?: emptyList(),
+                        cellW = cellW,
+                        dimPast = dimPast,
+                        now = now,
+                        lang = lang,
+                        cwLabel = cwLabel,
+                        dividerColor = dividerColor,
+                        gridColor = gridColor,
+                        labelColor = labelColor,
+                        secondaryText = secondaryText,
+                        todayColor = todayColor,
+                        onDayClick = onDayClick,
+                        onDayLongPress = onDayLongPress,
+                        onEventClick = onEventClick,
+                    )
+                }
             }
         }
     }
@@ -189,6 +265,7 @@ fun MonthView(
 
 @Composable
 private fun WeekRow(
+    rowModifier: Modifier,
     weekStart: LocalDate,
     today: LocalDate,
     weekEvents: List<CalEvent>,
@@ -196,6 +273,7 @@ private fun WeekRow(
     dimPast: Boolean,
     now: java.time.Instant,
     lang: String,
+    cwLabel: String,
     dividerColor: Color,
     gridColor: Color,
     labelColor: Color,
@@ -208,11 +286,12 @@ private fun WeekRow(
     val days = remember(weekStart) { (0 until 7).map { weekStart.plusDays(it.toLong()) } }
     val boundaryCol = (1 until 7).firstOrNull { days[it].dayOfMonth == 1 }
     val rowStartsNewMonth = days[0].dayOfMonth == 1
-    val cwLabel = tr("cal.cw")
 
     val packed = remember(weekStart, weekEvents) { packEvents(weekStart, weekEvents) }
 
-    Box(Modifier.fillMaxWidth().height(ROW_HEIGHT)) {
+    // Scroll mode passes a fixed ROW_HEIGHT; paged mode passes weight(1f) so six
+    // rows fill the screen. Event bars anchor to the top; the day cells fill height.
+    Box(rowModifier) {
         Row(Modifier.fillMaxSize()) {
             days.forEachIndexed { idx, day ->
                 val edge = when {
@@ -275,13 +354,11 @@ private fun EventBar(bar: PlacedBar, cellW: Dp, dimmed: Boolean, onClick: () ->
             .padding(horizontal = 4.dp),
         contentAlignment = Alignment.CenterStart,
     ) {
-        Text(
-            bar.event.title,
-            maxLines = 1,
-            overflow = TextOverflow.Ellipsis,
+        EventLabel(
+            event = bar.event,
+            color = bar.textColor,
             fontSize = 10.sp,
             fontWeight = FontWeight.Medium,
-            color = bar.textColor,
         )
     }
 }

app/src/main/java/com/scarriffle/calendarr/ui/calendar/TimeGridView.kt

@@ -4,6 +4,7 @@ import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -18,6 +19,7 @@ import androidx.compose.material3.Divider
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
@@ -38,6 +40,9 @@ import java.time.format.DateTimeFormatter
 
 private val GUTTER = 48.dp
 
+/** An all-day event laid out as a bar spanning columns [start]..[end] in lane [lane]. */
+private data class AllDayBar(val ev: CalEvent, val start: Int, val end: Int, val lane: Int)
+
 @Composable
 fun TimeGridView(
     days: List<LocalDate>,
@@ -47,16 +52,21 @@ fun TimeGridView(
 ) {
     val hourHeight = LocalAppSettings.current.hourHeight.coerceIn(28, 100).dp
     val dimPast = LocalAppSettings.current.dimPastEvents
-    val now = java.time.Instant.now()
-    val lang = LocalLang.current
     val today = LocalDate.now()
+    // Recomputed once per day (not on every recomposition/frame) — Instant.now()
+    // was previously called fresh each recomposition, causing visible flicker in
+    // the "is this now" past-dimming and wasted allocation.
+    val now = remember(today) { java.time.Instant.now() }
+    val lang = LocalLang.current
 
     Column(Modifier.fillMaxSize()) {
         // Day headers (only for multi-day / week view)
         if (days.size > 1) {
             Row(Modifier.fillMaxWidth()) {
                 Box(Modifier.width(GUTTER))
-                val dayFmt = DateTimeFormatter.ofPattern("EEE d", com.scarriffle.calendarr.ui.L10n.locale(lang))
+                val dayFmt = remember(lang) {
+                    DateTimeFormatter.ofPattern("EEE d", com.scarriffle.calendarr.ui.L10n.locale(lang))
+                }
                 days.forEach { day ->
                     Text(
                         dayFmt.format(day),
@@ -70,16 +80,48 @@ fun TimeGridView(
             }
         }
 
-        // All-day row
-        val allDay = days.map { d -> d to vm.eventsOn(d, state.events).filter { it.isAllDay } }
-        if (allDay.any { it.second.isNotEmpty() }) {
-            Row(Modifier.fillMaxWidth().padding(bottom = 2.dp)) {
-                Box(Modifier.width(GUTTER), contentAlignment = Alignment.Center) {
-                    Text(com.scarriffle.calendarr.ui.tr("cal.allday"), fontSize = 8.sp, color = MaterialTheme.colorScheme.outline)
+        // All-day row: continuous bars spanning an event's start→end columns and
+        // packed into lanes, instead of repeating a multi-day event once per day.
+        val perDay = days.map { d -> vm.eventsOn(d, state.events).filter { it.isAllDay } }
+        if (perDay.any { it.isNotEmpty() }) {
+            // event id -> [minCol, maxCol] within this week
+            val range = LinkedHashMap<String, IntArray>()
+            val evById = HashMap<String, CalEvent>()
+            perDay.forEachIndexed { i, evs ->
+                evs.forEach { ev ->
+                    evById[ev.id] = ev
+                    val r = range[ev.id]
+                    if (r == null) range[ev.id] = intArrayOf(i, i) else r[1] = i
                 }
-                allDay.forEach { (_, evs) ->
-                    Column(Modifier.weight(1f).padding(horizontal = 1.dp)) {
-                        evs.forEach { ev -> AllDayChip(ev, dimmed = dimPast && ev.endDate.isBefore(now), onClick = { onEventClick(ev) }) }
+            }
+            // earlier / longer first, then greedily pack into lanes
+            val spans = range.entries
+                .map { Triple(evById.getValue(it.key), it.value[0], it.value[1]) }
+                .sortedWith(compareBy({ it.second }, { -(it.third - it.second) }))
+            val laneEnd = ArrayList<Int>()
+            val bars = ArrayList<AllDayBar>()
+            for ((ev, s, e) in spans) {
+                var lane = 0
+                while (lane < laneEnd.size && laneEnd[lane] >= s) lane++
+                if (lane == laneEnd.size) laneEnd.add(e) else laneEnd[lane] = e
+                bars.add(AllDayBar(ev, s, e, lane))
+            }
+            val laneCount = (bars.maxOfOrNull { it.lane } ?: -1) + 1
+            Column(Modifier.fillMaxWidth().padding(bottom = 2.dp)) {
+                for (lane in 0 until laneCount) {
+                    Row(Modifier.fillMaxWidth()) {
+                        Box(Modifier.width(GUTTER), contentAlignment = Alignment.Center) {
+                            if (lane == 0) Text(com.scarriffle.calendarr.ui.tr("cal.allday"), fontSize = 8.sp, color = MaterialTheme.colorScheme.outline)
+                        }
+                        var col = 0
+                        bars.filter { it.lane == lane }.sortedBy { it.start }.forEach { bar ->
+                            if (bar.start > col) { Spacer(Modifier.weight((bar.start - col).toFloat())); col = bar.start }
+                            Box(Modifier.weight((bar.end - bar.start + 1).toFloat()).padding(horizontal = 1.dp)) {
+                                AllDayChip(bar.ev, dimmed = dimPast && bar.ev.endDate.isBefore(now), onClick = { onEventClick(bar.ev) })
+                            }
+                            col = bar.end + 1
+                        }
+                        if (col < days.size) Spacer(Modifier.weight((days.size - col).toFloat()))
                     }
                 }
             }
@@ -161,13 +203,12 @@ private fun TimedEvent(
             .padding(horizontal = 4.dp, vertical = 2.dp),
     ) {
         Column {
-            Text(
-                event.title,
-                fontSize = 10.sp,
-                maxLines = 2,
-                overflow = TextOverflow.Ellipsis,
+            EventLabel(
+                event = event,
                 color = color.contrastingTextColor(),
+                fontSize = 10.sp,
                 fontWeight = FontWeight.Medium,
+                maxLines = 2,
             )
             if (height > 36.dp) {
                 Text(
@@ -206,7 +247,7 @@ private fun AllDayChip(event: CalEvent, dimmed: Boolean, onClick: () -> Unit) {
             .clickable(onClick = onClick)
             .padding(horizontal = 3.dp, vertical = 1.dp),
     ) {
-        Text(event.title, fontSize = 9.sp, maxLines = 1, overflow = TextOverflow.Ellipsis, color = color.contrastingTextColor())
+        EventLabel(event = event, color = color.contrastingTextColor(), fontSize = 9.sp)
     }
 }
 

app/src/main/java/com/scarriffle/calendarr/ui/event/EventDetailScreen.kt

@@ -28,7 +28,6 @@ import androidx.compose.material.icons.filled.Notes
 import androidx.compose.material.icons.filled.Person
 import androidx.compose.material.icons.filled.Schedule
 import androidx.compose.material3.AlertDialog
-import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
@@ -99,7 +98,7 @@ fun EventDetailScreen(
                     )
                     Spacer(Modifier.width(12.dp))
                     Column(Modifier.weight(1f)) {
-                        Text(event.title, style = MaterialTheme.typography.headlineSmall, fontWeight = FontWeight.SemiBold)
+                        Text(event.renderTitle, style = MaterialTheme.typography.headlineSmall, fontWeight = FontWeight.SemiBold)
                         if (event.calendarName.isNotBlank()) {
                             Text(event.calendarName, style = MaterialTheme.typography.bodyMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
                         }
@@ -126,13 +125,15 @@ fun EventDetailScreen(
                     Text(tr("event.copy_title"))
                 }
                 if (canDelete) {
-                    Spacer(Modifier.height(12.dp))
-                    Button(
+                    Spacer(Modifier.height(4.dp))
+                    // Deliberately low-key (plain text button): destructive action
+                    // should be findable, not the loudest element on the screen.
+                    TextButton(
                         onClick = { confirmDelete = true },
-                        colors = ButtonDefaults.buttonColors(containerColor = MaterialTheme.colorScheme.errorContainer, contentColor = MaterialTheme.colorScheme.onErrorContainer),
+                        colors = ButtonDefaults.textButtonColors(contentColor = MaterialTheme.colorScheme.error),
                         modifier = Modifier.fillMaxWidth(),
                     ) {
-                        Icon(Icons.Filled.Delete, contentDescription = null)
+                        Icon(Icons.Filled.Delete, contentDescription = null, modifier = Modifier.size(18.dp))
                         Spacer(Modifier.width(8.dp))
                         Text(tr("common.delete"))
                     }

app/src/main/java/com/scarriffle/calendarr/ui/event/EventEditorSheet.kt

@@ -11,15 +11,21 @@ import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.imePadding
+import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.text.KeyboardOptions
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.ArrowDropDown
 import androidx.compose.material.icons.filled.Check
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material3.IconButton
 import androidx.compose.material3.Button
 import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
@@ -43,8 +49,10 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.input.KeyboardType
 import androidx.compose.ui.unit.dp
 import com.scarriffle.calendarr.domain.model.CalEvent
+import com.scarriffle.calendarr.domain.model.ReminderOptions
 import com.scarriffle.calendarr.domain.model.WritableCalendar
 import com.scarriffle.calendarr.ui.L10n
 import com.scarriffle.calendarr.ui.LocalLang
@@ -69,7 +77,9 @@ fun EventEditorSheet(
     request: EditorRequest,
     writableCalendars: List<WritableCalendar>,
     onDismiss: () -> Unit,
-    onSave: (WritableCalendar, String, Instant, Instant, Boolean, String, String, String?, Boolean) -> Unit,
+    defaultDurationMinutes: Int = 60,
+    reminderDisabledKeys: Set<String> = emptySet(),
+    onSave: (WritableCalendar, String, Instant, Instant, Boolean, String, String, String?, Boolean, List<Int>) -> Unit,
 ) {
     val zone = ZoneId.systemDefault()
     val context = LocalContext.current
@@ -95,17 +105,20 @@ fun EventEditorSheet(
     var startTime by remember {
         mutableStateOf(initialStart?.let { LocalTime.ofInstant(it, zone).withSecond(0).withNano(0) } ?: LocalTime.of(9, 0))
     }
+    // New events default to start (09:00) + the user's default duration.
+    val defaultEnd = request.date.atTime(9, 0).plusMinutes(defaultDurationMinutes.toLong())
     var endDate by remember {
         mutableStateOf(
             initialEnd?.let {
                 val d = LocalDate.ofInstant(it, zone)
                 if (template?.isAllDay == true) d.minusDays(1) else d
-            } ?: request.date
+            } ?: defaultEnd.toLocalDate()
         )
     }
     var endTime by remember {
-        mutableStateOf(initialEnd?.let { LocalTime.ofInstant(it, zone).withSecond(0).withNano(0) } ?: LocalTime.of(10, 0))
+        mutableStateOf(initialEnd?.let { LocalTime.ofInstant(it, zone).withSecond(0).withNano(0) } ?: defaultEnd.toLocalTime())
     }
+    var reminders by remember { mutableStateOf(template?.reminders ?: emptyList<Int>()) }
 
     val preselected = template?.let { ev ->
         val id = calendarKey(ev.source, ev.calendarId).substringAfter(":").toIntOrNull()
@@ -138,6 +151,8 @@ fun EventEditorSheet(
         Column(
             Modifier
                 .fillMaxWidth()
+                .navigationBarsPadding()
+                .imePadding()
                 .verticalScroll(rememberScrollState())
                 .padding(horizontal = 20.dp)
                 .padding(bottom = 32.dp),
@@ -231,13 +246,42 @@ fun EventEditorSheet(
             }
             Spacer(Modifier.size(12.dp))
 
-            // Private (local calendars only)
+            // Private + reminders (local calendars only)
             if (calendar?.source == "local") {
                 Row(Modifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.SpaceBetween) {
                     Text(tr("event.private"), style = MaterialTheme.typography.bodyLarge)
                     Switch(checked = isPrivate, onCheckedChange = { isPrivate = it })
                 }
                 Spacer(Modifier.size(12.dp))
+
+                val remindersDisabled = calendar?.let {
+                    reminderDisabledKeys.contains(calendarKey(it.source, it.numericId.toString()))
+                } ?: false
+                Text(tr("event.reminders"), style = MaterialTheme.typography.labelMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
+                if (remindersDisabled) {
+                    Text(
+                        tr("event.reminders_disabled"),
+                        style = MaterialTheme.typography.bodySmall,
+                        color = MaterialTheme.colorScheme.tertiary,
+                        modifier = Modifier.padding(top = 2.dp),
+                    )
+                }
+                reminders.forEachIndexed { idx, min ->
+                    ReminderRow(
+                        minutes = min,
+                        enabled = !remindersDisabled,
+                        onChange = { v -> reminders = reminders.toMutableList().also { it[idx] = v } },
+                        onRemove = { reminders = reminders.toMutableList().also { it.removeAt(idx) } },
+                    )
+                }
+                androidx.compose.material3.TextButton(
+                    enabled = !remindersDisabled,
+                    onClick = {
+                        val next = ReminderOptions.presets.firstOrNull { it !in reminders } ?: ReminderOptions.customDefault
+                        reminders = reminders + next
+                    },
+                ) { Text(tr("event.reminder_add")) }
+                Spacer(Modifier.size(12.dp))
             }
 
             // Color
@@ -280,7 +324,8 @@ fun EventEditorSheet(
                         start = startDate.atTime(startTime).atZone(zone).toInstant()
                         end = endDate.atTime(endTime).atZone(zone).toInstant()
                     }
-                    onSave(cal, title.trim(), start, end, allDay, location.trim(), description.trim(), color, isPrivate && cal.source == "local")
+                    val rem = if (cal.source == "local") reminders else emptyList()
+                    onSave(cal, title.trim(), start, end, allDay, location.trim(), description.trim(), color, isPrivate && cal.source == "local", rem)
                 },
                 enabled = writableCalendars.isNotEmpty(),
                 modifier = Modifier.fillMaxWidth(),
@@ -290,3 +335,73 @@ fun EventEditorSheet(
         }
     }
 }
+
+/** One reminder row: a preset dropdown plus, in custom mode, a number field +
+ *  unit dropdown. The value is always emitted as minutes-before-start. */
+@Composable
+private fun ReminderRow(
+    minutes: Int,
+    enabled: Boolean,
+    onChange: (Int) -> Unit,
+    onRemove: () -> Unit,
+) {
+    val isPreset = minutes in ReminderOptions.presets
+    var presetMenu by remember { mutableStateOf(false) }
+    var unitMenu by remember { mutableStateOf(false) }
+
+    @Composable
+    fun label(min: Int): String =
+        if (min == 0) tr("event.reminder_at_start")
+        else ReminderOptions.split(min).let { (v, u) -> "$v ${tr(u.labelKey)} ${tr("event.reminder_before")}" }
+
+    Column(Modifier.fillMaxWidth().padding(vertical = 4.dp)) {
+        Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+            Box(Modifier.weight(1f)) {
+                OutlinedButton(onClick = { presetMenu = true }, enabled = enabled, modifier = Modifier.fillMaxWidth()) {
+                    Text(if (isPreset) label(minutes) else tr("event.reminder_custom"), modifier = Modifier.weight(1f))
+                    Icon(Icons.Filled.ArrowDropDown, contentDescription = null)
+                }
+                DropdownMenu(expanded = presetMenu, onDismissRequest = { presetMenu = false }) {
+                    ReminderOptions.presets.forEach { p ->
+                        DropdownMenuItem(text = { Text(label(p)) }, onClick = { onChange(p); presetMenu = false })
+                    }
+                    DropdownMenuItem(text = { Text(tr("event.reminder_custom")) }, onClick = {
+                        if (minutes in ReminderOptions.presets) onChange(ReminderOptions.customDefault)
+                        presetMenu = false
+                    })
+                }
+            }
+            IconButton(onClick = onRemove, enabled = enabled) {
+                Icon(Icons.Filled.Close, contentDescription = null)
+            }
+        }
+        if (!isPreset) {
+            val (value, unit) = ReminderOptions.split(minutes)
+            Row(verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.spacedBy(8.dp)) {
+                OutlinedTextField(
+                    value = value.toString(),
+                    onValueChange = { txt ->
+                        val n = txt.filter { it.isDigit() }.toIntOrNull()?.coerceAtLeast(1) ?: 1
+                        onChange(n * unit.mult)
+                    },
+                    enabled = enabled,
+                    singleLine = true,
+                    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Number),
+                    modifier = Modifier.width(96.dp),
+                )
+                Box {
+                    OutlinedButton(onClick = { unitMenu = true }, enabled = enabled) {
+                        Text(tr(unit.labelKey))
+                        Icon(Icons.Filled.ArrowDropDown, contentDescription = null)
+                    }
+                    DropdownMenu(expanded = unitMenu, onDismissRequest = { unitMenu = false }) {
+                        ReminderOptions.Unit.values().forEach { u ->
+                            DropdownMenuItem(text = { Text(tr(u.labelKey)) }, onClick = { onChange(value * u.mult); unitMenu = false })
+                        }
+                    }
+                }
+                Text(tr("event.reminder_before"), color = MaterialTheme.colorScheme.onSurfaceVariant)
+            }
+        }
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/groups/GroupsScreen.kt

@@ -0,0 +1,365 @@
+package com.scarriffle.calendarr.ui.groups
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ExperimentalLayoutApi
+import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Add
+import androidx.compose.material.icons.filled.Celebration
+import androidx.compose.material.icons.filled.ChevronRight
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Delete
+import androidx.compose.material.icons.filled.DirectionsRun
+import androidx.compose.material.icons.filled.Favorite
+import androidx.compose.material.icons.filled.Flight
+import androidx.compose.material.icons.filled.Home
+import androidx.compose.material.icons.filled.MusicNote
+import androidx.compose.material.icons.filled.People
+import androidx.compose.material.icons.filled.Pets
+import androidx.compose.material.icons.filled.Restaurant
+import androidx.compose.material.icons.filled.School
+import androidx.compose.material.icons.filled.Star
+import androidx.compose.material.icons.filled.Tune
+import androidx.compose.material.icons.filled.Work
+import androidx.compose.material3.AlertDialog
+import androidx.compose.material3.Button
+import androidx.compose.material3.Checkbox
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Divider
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.ModalBottomSheet
+import androidx.compose.material3.OutlinedButton
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.hilt.navigation.compose.hiltViewModel
+import com.scarriffle.calendarr.domain.model.Group
+import com.scarriffle.calendarr.ui.components.ColorPickerDialog
+import com.scarriffle.calendarr.ui.tr
+import com.scarriffle.calendarr.util.colorFromHex
+
+/**
+ * Cross-platform group-icon keys (stored server-side) rendered as native
+ * Material icons — consistent everywhere instead of OS-emoji that vary by
+ * platform. Mirrors iOS GroupIcons / the web SVG set.
+ */
+object GroupIcons {
+    val keys = listOf(
+        "people", "home", "heart", "work", "school", "sports",
+        "party", "pet", "travel", "music", "food", "star",
+    )
+
+    fun vector(key: String?): ImageVector = when (key) {
+        "people" -> Icons.Filled.People
+        "home" -> Icons.Filled.Home
+        "heart" -> Icons.Filled.Favorite
+        "work" -> Icons.Filled.Work
+        "school" -> Icons.Filled.School
+        "sports" -> Icons.Filled.DirectionsRun
+        "party" -> Icons.Filled.Celebration
+        "pet" -> Icons.Filled.Pets
+        "travel" -> Icons.Filled.Flight
+        "music" -> Icons.Filled.MusicNote
+        "food" -> Icons.Filled.Restaurant
+        "star" -> Icons.Filled.Star
+        else -> Icons.Filled.People
+    }
+
+    fun isKey(s: String?): Boolean = s != null && s in keys
+}
+
+/** Render a group's icon: native Material icon for keys, legacy emoji fallback. */
+@Composable
+fun GroupIcon(icon: String?, modifier: Modifier = Modifier, tint: androidx.compose.ui.graphics.Color? = null) {
+    if (GroupIcons.isKey(icon)) {
+        Icon(GroupIcons.vector(icon), contentDescription = null, modifier = modifier,
+            tint = tint ?: androidx.compose.material3.LocalContentColor.current)
+    } else if (!icon.isNullOrEmpty()) {
+        Text(icon, modifier = modifier)
+    } else {
+        Icon(Icons.Filled.People, contentDescription = null, modifier = modifier,
+            tint = tint ?: androidx.compose.material3.LocalContentColor.current)
+    }
+}
+
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun GroupsScreen(
+    onClose: () -> Unit,
+    onChanged: () -> Unit,
+    onOpenGroupView: (Group) -> Unit = {},
+    vm: GroupsViewModel = hiltViewModel(),
+) {
+    var createOpen by remember { mutableStateOf(false) }
+    var manageId by remember { mutableStateOf<Int?>(null) }
+
+    Surface(Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
+        Scaffold(
+            topBar = {
+                TopAppBar(
+                    title = { Text(tr("groups.title")) },
+                    navigationIcon = {
+                        IconButton(onClick = onClose) { Icon(Icons.Filled.Close, contentDescription = tr("common.close")) }
+                    },
+                    actions = {
+                        IconButton(onClick = { createOpen = true }) { Icon(Icons.Filled.Add, contentDescription = tr("groups.create")) }
+                    },
+                )
+            },
+        ) { padding ->
+            if (vm.loading) {
+                Box(Modifier.fillMaxSize().padding(padding), contentAlignment = Alignment.Center) { CircularProgressIndicator() }
+                return@Scaffold
+            }
+            LazyColumn(Modifier.fillMaxSize().padding(padding).padding(horizontal = 16.dp)) {
+                if (vm.groups.isEmpty()) {
+                    item {
+                        Text(tr("groups.empty"), color = MaterialTheme.colorScheme.onSurfaceVariant, modifier = Modifier.padding(vertical = 16.dp))
+                    }
+                }
+                items(vm.groups, key = { it.id }) { g ->
+                    Row(
+                        Modifier.fillMaxWidth().clickable { onOpenGroupView(g) }.padding(vertical = 10.dp),
+                        verticalAlignment = Alignment.CenterVertically,
+                    ) {
+                        GroupIcon(g.icon, tint = MaterialTheme.colorScheme.onSurface)
+                        Column(Modifier.weight(1f).padding(start = 12.dp)) {
+                            Text(g.name, style = MaterialTheme.typography.bodyLarge)
+                            Text(
+                                tr("groups.member_count", g.memberCount),
+                                style = MaterialTheme.typography.bodySmall,
+                                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                            )
+                        }
+                        IconButton(onClick = { manageId = g.id }) {
+                            Icon(Icons.Filled.Tune, contentDescription = tr("groups.manage"), tint = MaterialTheme.colorScheme.onSurfaceVariant)
+                        }
+                        Icon(Icons.Filled.ChevronRight, contentDescription = tr("groups.view"), tint = MaterialTheme.colorScheme.onSurfaceVariant)
+                    }
+                    Divider()
+                }
+                vm.error?.let { item { Text(it, color = MaterialTheme.colorScheme.error, modifier = Modifier.padding(vertical = 12.dp)) } }
+            }
+        }
+    }
+
+    if (createOpen) {
+        GroupEditSheet(
+            vm = vm,
+            existing = null,
+            onDismiss = { createOpen = false },
+            onSaved = { createOpen = false; onChanged() },
+        )
+    }
+
+    manageId?.let { id ->
+        val existing = vm.groups.firstOrNull { it.id == id }
+        GroupEditSheet(
+            vm = vm,
+            existing = existing,
+            onDismiss = { manageId = null },
+            onSaved = { manageId = null; onChanged() },
+        )
+    }
+}
+
+/** Create (existing == null) or manage (existing != null) a group. */
+@OptIn(ExperimentalMaterial3Api::class, ExperimentalLayoutApi::class)
+@Composable
+private fun GroupEditSheet(
+    vm: GroupsViewModel,
+    existing: Group?,
+    onDismiss: () -> Unit,
+    onSaved: () -> Unit,
+) {
+    val me = vm.currentUserId
+    var name by remember { mutableStateOf(existing?.name ?: "") }
+    var icon by remember { mutableStateOf(existing?.icon?.takeIf { GroupIcons.isKey(it) } ?: "people") }
+    var selected by remember { mutableStateOf(setOf<Int>()) }
+    var existingMembers by remember { mutableStateOf(setOf<Int>()) }
+    var detail by remember { mutableStateOf<Group?>(null) }
+    var loaded by remember { mutableStateOf(existing == null) }
+    var confirmDelete by remember { mutableStateOf(false) }
+    var memberColorTarget by remember { mutableStateOf<Pair<Int, String>?>(null) } // userId, current hex
+
+    // Manage: load full details (members + colours) and pre-fill selection.
+    LaunchedEffect(existing?.id) {
+        val id = existing?.id ?: return@LaunchedEffect
+        val g = vm.groupDetail(id)
+        detail = g
+        if (g != null) {
+            name = g.name
+            icon = g.icon?.takeIf { GroupIcons.isKey(it) } ?: "people"
+            val members = g.members.map { it.id }.filter { it != me }.toSet()
+            existingMembers = members
+            selected = members
+        }
+        loaded = true
+    }
+
+    ModalBottomSheet(onDismissRequest = onDismiss) {
+        Column(Modifier.fillMaxWidth().navigationBarsPadding().padding(horizontal = 20.dp).padding(bottom = 24.dp).verticalScroll(rememberScrollState())) {
+            Text(
+                if (existing == null) tr("groups.create") else tr("groups.manage"),
+                style = MaterialTheme.typography.titleLarge,
+                fontWeight = FontWeight.SemiBold,
+            )
+            Spacer(Modifier.size(16.dp))
+
+            OutlinedTextField(
+                value = name,
+                onValueChange = { name = it },
+                label = { Text(tr("groups.name")) },
+                singleLine = true,
+                modifier = Modifier.fillMaxWidth(),
+            )
+            Spacer(Modifier.size(16.dp))
+
+            Text(tr("groups.icon"), style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+            Spacer(Modifier.size(8.dp))
+            FlowRow(horizontalArrangement = Arrangement.spacedBy(8.dp), verticalArrangement = Arrangement.spacedBy(8.dp)) {
+                GroupIcons.keys.forEach { ic ->
+                    val sel = ic == icon
+                    Box(
+                        Modifier.size(44.dp).clip(RoundedCornerShape(8.dp))
+                            .background(if (sel) MaterialTheme.colorScheme.primary.copy(alpha = 0.25f) else MaterialTheme.colorScheme.surfaceVariant)
+                            .clickable { icon = ic },
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        Icon(
+                            GroupIcons.vector(ic),
+                            contentDescription = ic,
+                            tint = if (sel) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.onSurfaceVariant,
+                        )
+                    }
+                }
+            }
+            Spacer(Modifier.size(16.dp))
+
+            Text(tr("groups.members"), style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+            if (!loaded) {
+                Box(Modifier.fillMaxWidth().padding(12.dp), contentAlignment = Alignment.Center) { CircularProgressIndicator(Modifier.size(22.dp), strokeWidth = 2.dp) }
+            } else {
+                vm.directory.forEach { u ->
+                    Row(
+                        Modifier.fillMaxWidth().clickable {
+                            selected = if (u.id in selected) selected - u.id else selected + u.id
+                        }.padding(vertical = 4.dp),
+                        verticalAlignment = Alignment.CenterVertically,
+                    ) {
+                        Checkbox(checked = u.id in selected, onCheckedChange = {
+                            selected = if (u.id in selected) selected - u.id else selected + u.id
+                        })
+                        Text(u.displayName, modifier = Modifier.padding(start = 4.dp))
+                    }
+                }
+            }
+
+            // Member colours (manage only)
+            detail?.members?.takeIf { it.isNotEmpty() }?.let { members ->
+                Spacer(Modifier.size(8.dp))
+                Divider()
+                Spacer(Modifier.size(8.dp))
+                Text(tr("groups.member_color"), style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+                members.forEach { m ->
+                    val hex = m.color ?: "#4285f4"
+                    Row(
+                        Modifier.fillMaxWidth().clickable { memberColorTarget = m.id to hex }.padding(vertical = 8.dp),
+                        verticalAlignment = Alignment.CenterVertically,
+                    ) {
+                        Box(Modifier.size(20.dp).clip(CircleShape).background(colorFromHex(hex)))
+                        Text(m.displayName, modifier = Modifier.weight(1f).padding(start = 12.dp))
+                    }
+                }
+            }
+
+            Spacer(Modifier.size(20.dp))
+            Button(onClick = {
+                val n = name.trim()
+                if (n.isEmpty()) return@Button
+                if (existing == null) {
+                    vm.createGroup(n, icon, selected.toList()) { onSaved() }
+                } else {
+                    vm.saveGroup(existing.id, n, icon, selected, existingMembers) { onSaved() }
+                }
+            }, enabled = name.isNotBlank(), modifier = Modifier.fillMaxWidth()) {
+                Text(tr("event.save"))
+            }
+
+            if (existing != null) {
+                Spacer(Modifier.size(8.dp))
+                OutlinedButton(
+                    onClick = { confirmDelete = true },
+                    modifier = Modifier.fillMaxWidth(),
+                ) {
+                    Icon(Icons.Filled.Delete, contentDescription = null, tint = MaterialTheme.colorScheme.error)
+                    Spacer(Modifier.size(8.dp))
+                    Text(tr("groups.delete"), color = MaterialTheme.colorScheme.error)
+                }
+            }
+        }
+    }
+
+    memberColorTarget?.let { (userId, hex) ->
+        ColorPickerDialog(
+            initial = hex,
+            title = tr("groups.member_color"),
+            onDismiss = { memberColorTarget = null },
+            onConfirm = { picked ->
+                existing?.let { vm.setMemberColor(it.id, userId, picked) }
+                // reflect locally
+                detail = detail?.let { d -> d.copy(members = d.members.map { if (it.id == userId) it.copy(color = picked) else it }) }
+                memberColorTarget = null
+            },
+        )
+    }
+
+    if (confirmDelete && existing != null) {
+        AlertDialog(
+            onDismissRequest = { confirmDelete = false },
+            title = { Text(tr("groups.delete")) },
+            text = { Text(tr("groups.delete_confirm")) },
+            confirmButton = {
+                TextButton(onClick = { confirmDelete = false; vm.deleteGroup(existing.id) { onSaved() } }) {
+                    Text(tr("groups.delete"), color = MaterialTheme.colorScheme.error)
+                }
+            },
+            dismissButton = { TextButton(onClick = { confirmDelete = false }) { Text(tr("common.cancel")) } },
+        )
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/groups/GroupsViewModel.kt

@@ -0,0 +1,77 @@
+package com.scarriffle.calendarr.ui.groups
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.scarriffle.calendarr.data.CalendarRepository
+import com.scarriffle.calendarr.domain.model.DirectoryUser
+import com.scarriffle.calendarr.domain.model.Group
+import dagger.hilt.android.lifecycle.HiltViewModel
+import kotlinx.coroutines.launch
+import javax.inject.Inject
+
+@HiltViewModel
+class GroupsViewModel @Inject constructor(
+    private val repository: CalendarRepository,
+) : ViewModel() {
+
+    var loading by mutableStateOf(true)
+        private set
+    var groups by mutableStateOf<List<Group>>(emptyList())
+        private set
+    var directory by mutableStateOf<List<DirectoryUser>>(emptyList())
+        private set
+    var error by mutableStateOf<String?>(null)
+        private set
+
+    val currentUserId: Int get() = repository.currentUserId
+
+    init { load() }
+
+    fun load() {
+        viewModelScope.launch {
+            loading = true
+            error = null
+            groups = runCatching { repository.getGroups() }.getOrDefault(emptyList())
+            directory = runCatching { repository.getUserDirectory() }.getOrDefault(emptyList())
+            loading = false
+        }
+    }
+
+    suspend fun groupDetail(id: Int): Group? = runCatching { repository.getGroup(id) }.getOrNull()
+
+    fun createGroup(name: String, icon: String, memberIds: List<Int>, onDone: () -> Unit) {
+        viewModelScope.launch {
+            runCatching { repository.createGroup(name, memberIds, icon) }
+                .onSuccess { load(); onDone() }
+                .onFailure { error = it.message }
+        }
+    }
+
+    /** Save name/icon, then reconcile membership against [existingMemberIds]. */
+    fun saveGroup(id: Int, name: String, icon: String, desired: Set<Int>, existing: Set<Int>, onDone: () -> Unit) {
+        viewModelScope.launch {
+            runCatching {
+                repository.updateGroup(id, name, icon)
+                for (uid in desired - existing) repository.addGroupMember(id, uid)
+                for (uid in existing - desired) repository.removeGroupMember(id, uid)
+            }
+                .onSuccess { load(); onDone() }
+                .onFailure { error = it.message }
+        }
+    }
+
+    fun setMemberColor(groupId: Int, userId: Int, color: String) {
+        viewModelScope.launch { runCatching { repository.setGroupMemberColor(groupId, userId, color) } }
+    }
+
+    fun deleteGroup(id: Int, onDone: () -> Unit) {
+        viewModelScope.launch {
+            runCatching { repository.deleteGroup(id) }
+                .onSuccess { load(); onDone() }
+                .onFailure { error = it.message }
+        }
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/menu/MenuScreen.kt

@@ -0,0 +1,124 @@
+package com.scarriffle.calendarr.ui.menu
+
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.WindowInsets
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.navigationBarsPadding
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.foundation.verticalScroll
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.CalendarMonth
+import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Dns
+import androidx.compose.material.icons.filled.Logout
+import androidx.compose.material.icons.filled.Palette
+import androidx.compose.material.icons.filled.People
+import androidx.compose.material.icons.filled.Person
+import androidx.compose.material.icons.filled.Sync
+import androidx.compose.material3.Divider
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Surface
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.graphics.vector.ImageVector
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import com.scarriffle.calendarr.ui.tr
+
+/** Full-screen menu / landing page reached from the drawer's gear: the hub for
+ *  Profile / Appearance / Accounts / Groups / Sync / Server / Logout. Each entry
+ *  opens its own full-screen page. */
+@OptIn(ExperimentalMaterial3Api::class)
+@Composable
+fun MenuScreen(
+    username: String,
+    serverUrl: String,
+    onClose: () -> Unit,
+    onProfile: () -> Unit,
+    onAppearance: () -> Unit,
+    onAccounts: () -> Unit,
+    onGroups: () -> Unit,
+    onSync: () -> Unit,
+    onSwitchServer: () -> Unit,
+    onLogout: () -> Unit,
+) {
+    Surface(Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
+        Scaffold(
+            topBar = {
+                TopAppBar(
+                    title = { Text(tr("nav.menu")) },
+                    navigationIcon = {
+                        IconButton(onClick = onClose) { Icon(Icons.Filled.Close, contentDescription = tr("common.close")) }
+                    },
+                )
+            },
+            contentWindowInsets = WindowInsets(0),
+        ) { padding ->
+            Column(
+                Modifier.fillMaxSize().padding(padding).verticalScroll(rememberScrollState()).navigationBarsPadding(),
+            ) {
+                Row(
+                    Modifier.fillMaxWidth().padding(horizontal = 20.dp, vertical = 16.dp),
+                    verticalAlignment = Alignment.CenterVertically,
+                ) {
+                    Box(
+                        Modifier.size(44.dp).clip(CircleShape).background(MaterialTheme.colorScheme.primary),
+                        contentAlignment = Alignment.Center,
+                    ) {
+                        Text(username.firstOrNull()?.uppercase() ?: "?",
+                            style = MaterialTheme.typography.titleMedium,
+                            color = MaterialTheme.colorScheme.onPrimary, fontWeight = FontWeight.Bold)
+                    }
+                    Spacer(Modifier.width(14.dp))
+                    Column {
+                        Text(username, style = MaterialTheme.typography.titleMedium, fontWeight = FontWeight.SemiBold, maxLines = 1)
+                        Text(serverUrl.removePrefix("https://").removePrefix("http://"),
+                            style = MaterialTheme.typography.bodySmall,
+                            color = MaterialTheme.colorScheme.onSurfaceVariant, maxLines = 1)
+                    }
+                }
+                Divider()
+                MenuRow(Icons.Filled.Person, tr("menu.profile"), onProfile)
+                MenuRow(Icons.Filled.Palette, tr("menu.appearance"), onAppearance)
+                MenuRow(Icons.Filled.CalendarMonth, tr("menu.accounts"), onAccounts)
+                MenuRow(Icons.Filled.People, tr("menu.groups"), onGroups)
+                Divider(Modifier.padding(vertical = 4.dp))
+                MenuRow(Icons.Filled.Sync, tr("menu.sync"), onSync)
+                MenuRow(Icons.Filled.Dns, tr("server.switch"), onSwitchServer)
+                MenuRow(Icons.Filled.Logout, tr("menu.logout"), onLogout, destructive = true)
+            }
+        }
+    }
+}
+
+@Composable
+private fun MenuRow(icon: ImageVector, label: String, onClick: () -> Unit, destructive: Boolean = false) {
+    val tint = if (destructive) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.onSurfaceVariant
+    Row(
+        Modifier.fillMaxWidth().clickable(onClick = onClick).padding(horizontal = 20.dp, vertical = 14.dp),
+        verticalAlignment = Alignment.CenterVertically,
+    ) {
+        Icon(icon, contentDescription = null, tint = tint)
+        Spacer(Modifier.width(18.dp))
+        Text(label, style = MaterialTheme.typography.bodyLarge,
+            color = if (destructive) MaterialTheme.colorScheme.error else MaterialTheme.colorScheme.onSurface)
+    }
+}

app/src/main/java/com/scarriffle/calendarr/ui/menu/MenuSheet.kt

@@ -1,74 +0,0 @@
-package com.scarriffle.calendarr.ui.menu
-
-import androidx.compose.foundation.clickable
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Row
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.layout.width
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.AccountCircle
-import androidx.compose.material.icons.filled.Dns
-import androidx.compose.material.icons.filled.Logout
-import androidx.compose.material.icons.filled.Palette
-import androidx.compose.material.icons.filled.Sync
-import androidx.compose.material.icons.filled.CalendarMonth
-import androidx.compose.material3.Divider
-import androidx.compose.material3.ExperimentalMaterial3Api
-import androidx.compose.material3.Icon
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.ModalBottomSheet
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.graphics.vector.ImageVector
-import androidx.compose.ui.text.font.FontWeight
-import androidx.compose.ui.unit.dp
-import com.scarriffle.calendarr.ui.tr
-
-@OptIn(ExperimentalMaterial3Api::class)
-@Composable
-fun MenuSheet(
-    isAdmin: Boolean,
-    onDismiss: () -> Unit,
-    onProfile: () -> Unit,
-    onAppearance: () -> Unit,
-    onAccounts: () -> Unit,
-    onSync: () -> Unit,
-    onLogout: () -> Unit,
-    onSwitchServer: () -> Unit,
-) {
-    ModalBottomSheet(onDismissRequest = onDismiss) {
-        Column(Modifier.fillMaxWidth().padding(bottom = 24.dp)) {
-            Text(
-                "Calendarr",
-                style = MaterialTheme.typography.titleLarge,
-                fontWeight = FontWeight.SemiBold,
-                modifier = Modifier.padding(horizontal = 20.dp, vertical = 8.dp),
-            )
-            MenuRow(Icons.Filled.AccountCircle, tr("menu.profile"), onProfile)
-            MenuRow(Icons.Filled.Palette, tr("menu.appearance"), onAppearance)
-            MenuRow(Icons.Filled.CalendarMonth, tr("menu.accounts"), onAccounts)
-            Divider(Modifier.padding(vertical = 4.dp))
-            MenuRow(Icons.Filled.Sync, tr("menu.sync"), onSync)
-            Divider(Modifier.padding(vertical = 4.dp))
-            MenuRow(Icons.Filled.Logout, tr("menu.logout"), onLogout)
-            MenuRow(Icons.Filled.Dns, tr("server.switch"), onSwitchServer)
-        }
-    }
-}
-
-@Composable
-private fun MenuRow(icon: ImageVector, label: String, onClick: () -> Unit) {
-    Row(
-        Modifier.fillMaxWidth().clickable(onClick = onClick).padding(horizontal = 20.dp, vertical = 14.dp),
-        verticalAlignment = Alignment.CenterVertically,
-    ) {
-        Icon(icon, contentDescription = null, tint = MaterialTheme.colorScheme.onSurfaceVariant)
-        Spacer(Modifier.width(18.dp))
-        Text(label, style = MaterialTheme.typography.bodyLarge)
-    }
-}

app/src/main/java/com/scarriffle/calendarr/ui/settings/SettingsScreen.kt

@@ -3,31 +3,32 @@ package com.scarriffle.calendarr.ui.settings
 import androidx.compose.foundation.background
 import androidx.compose.foundation.border
 import androidx.compose.foundation.clickable
-import androidx.compose.foundation.horizontalScroll
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.ExperimentalLayoutApi
-import androidx.compose.foundation.layout.FlowRow
+import androidx.compose.foundation.layout.PaddingValues
 import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Check
 import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.icons.filled.Refresh
 import androidx.compose.material3.Button
 import androidx.compose.material3.Divider
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.filled.ArrowDropDown
+import androidx.compose.material3.DropdownMenu
 import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.ExposedDropdownMenuBox
 import androidx.compose.material3.ExposedDropdownMenuDefaults
-import androidx.compose.material3.FilterChip
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
@@ -36,6 +37,7 @@ import androidx.compose.material3.Scaffold
 import androidx.compose.material3.Surface
 import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
@@ -56,8 +58,11 @@ import com.scarriffle.calendarr.ui.tr
 import com.scarriffle.calendarr.util.colorFromHex
 import com.scarriffle.calendarr.util.toHex
 
-private val PALETTE = listOf(
-    "#4285f4", "#ea4335", "#34a853", "#fbbc05", "#46bdc6", "#9c27b0", "#ff7043", "#7090c0",
+// Canonical default colours (single source for the reset buttons).
+private val DEFAULT_COLORS = mapOf(
+    "primary_color" to "#4285F4", "accent_color" to "#EA4335", "today_color" to "#4285F4",
+    "text_color" to "#FFFFFF", "bg_color" to "#000000", "line_color" to "#3A3A52",
+    "month_divider_color" to "#7090C0", "month_label_color" to "#7090C0",
 )
 
 @OptIn(ExperimentalMaterial3Api::class)
@@ -70,7 +75,6 @@ fun SettingsScreen(
 ) {
     val initialSettings = LocalAppSettings.current
     var settings by remember { mutableStateOf(initialSettings) }
-    var cacheMonths by remember { mutableStateOf(vm.cacheMonths) }
 
     fun update(newSettings: AppSettings) {
         settings = newSettings
@@ -78,6 +82,10 @@ fun SettingsScreen(
         vm.apply(newSettings, onSettingsSynced)
     }
 
+    // Per-row sync toggle: enabling adopts this device's current value.
+    fun toggle(key: String) { vm.toggleSync(key, settings, onSettingsSynced) }
+    fun synced(key: String) = vm.syncFlags[key] == true
+
     Surface(Modifier.fillMaxSize(), color = MaterialTheme.colorScheme.background) {
         Scaffold(
             topBar = {
@@ -91,99 +99,254 @@ fun SettingsScreen(
         ) { padding ->
             Column(Modifier.fillMaxSize().padding(padding).verticalScroll(rememberScrollState()).padding(16.dp)) {
 
-                ProfileChapter(vm)
-                Divider(Modifier.padding(vertical = 16.dp))
-
-                Section(tr("settings.calview"))
-                ChipRow(
-                    options = CalViewType.entries.map { it.key to tr("view.${it.key}") },
-                    selected = settings.defaultView,
-                    onSelect = { update(settings.copy(defaultView = it)) },
-                )
-                Spacer(Modifier.size(16.dp))
-
-                Section(tr("settings.firstweekday"))
-                ChipRow(
-                    options = listOf("monday" to tr("settings.monday"), "sunday" to tr("settings.sunday")),
-                    selected = settings.weekStartDay,
-                    onSelect = { update(settings.copy(weekStartDay = it)) },
-                )
-                Spacer(Modifier.size(16.dp))
-
-                Row(Modifier.fillMaxWidth(), verticalAlignment = Alignment.CenterVertically, horizontalArrangement = Arrangement.SpaceBetween) {
-                    Text(tr("settings.dimpast"), style = MaterialTheme.typography.bodyLarge)
-                    Switch(checked = settings.dimPastEvents, onCheckedChange = { update(settings.copy(dimPastEvents = it)) })
+                // Global "sync everything" master switch.
+                Row(Modifier.fillMaxWidth().padding(vertical = 8.dp), verticalAlignment = Alignment.CenterVertically) {
+                    Column(Modifier.weight(1f)) {
+                        Text(tr("settings.sync_all"), style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold)
+                        Text(tr("settings.sync_all.desc"), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
+                    }
+                    Switch(
+                        checked = vm.syncableKeys.all { vm.syncFlags[it] == true },
+                        onCheckedChange = { on -> vm.setAllSync(on, settings, onSettingsSynced) },
+                    )
                 }
                 Divider(Modifier.padding(vertical = 16.dp))
 
-                Section(tr("settings.language"))
-                ChipRow(
-                    options = listOf("system" to tr("lang.system"), "de" to tr("lang.german"), "en" to tr("lang.english")),
-                    selected = settings.language,
-                    onSelect = { update(settings.copy(language = it)) },
+                ProfileChapter(vm)
+                Divider(Modifier.padding(vertical = 16.dp))
+
+                // ---- Termine (synced) ----
+                Section(tr("settings.calview"))
+                SyncDropdownRow(
+                    tr("settings.default_duration"),
+                    listOf("15" to "15 min", "30" to "30 min", "45" to "45 min", "60" to "1 h", "90" to "1.5 h", "120" to "2 h"),
+                    settings.defaultEventDurationMinutes.toString(),
+                    { update(settings.copy(defaultEventDurationMinutes = it.toInt())) },
+                    synced("default_event_duration_minutes"), { toggle("default_event_duration_minutes") },
+                )
+                SyncDropdownRow(
+                    tr("settings.defaultreminder"),
+                    reminderOptions(),
+                    (settings.defaultReminderMinutes ?: -1).toString(),
+                    { update(settings.copy(defaultReminderMinutes = it.toInt().takeIf { m -> m >= 0 })) },
+                    synced("default_reminder_minutes"), { toggle("default_reminder_minutes") },
                 )
                 Divider(Modifier.padding(vertical = 16.dp))
 
+                // ---- Ansicht (synced) ----
+                Section(tr("settings.appearance"))
+                SyncDropdownRow(
+                    tr("settings.defaultview"),
+                    CalViewType.entries.map { it.key to tr("view.${it.key}") },
+                    settings.defaultView,
+                    { update(settings.copy(defaultView = it)) },
+                    synced("default_view"), { toggle("default_view") },
+                )
+                SyncDropdownRow(
+                    tr("settings.firstweekday"),
+                    listOf("monday" to tr("settings.monday"), "sunday" to tr("settings.sunday")),
+                    settings.weekStartDay,
+                    { update(settings.copy(weekStartDay = it)) },
+                    synced("week_start_day"), { toggle("week_start_day") },
+                )
+                SyncSwitchRow(tr("settings.dimpast"), settings.dimPastEvents, { update(settings.copy(dimPastEvents = it)) }, synced("dim_past_events"), { toggle("dim_past_events") })
+                SyncDropdownRow(
+                    tr("settings.month_mode"),
+                    listOf("false" to tr("settings.month_mode.scroll"), "true" to tr("settings.month_mode.paged")),
+                    settings.monthViewPaged.toString(),
+                    { update(settings.copy(monthViewPaged = it.toBoolean())) },
+                    synced("month_view_paged"), { toggle("month_view_paged") },
+                )
+                SyncDropdownRow(
+                    tr("settings.hourheight"),
+                    listOf("28" to tr("settings.hourheight.compact"), "44" to tr("settings.hourheight.normal"), "60" to tr("settings.hourheight.comfort"), "80" to tr("settings.hourheight.large")),
+                    settings.hourHeight.toString(),
+                    { update(settings.copy(hourHeight = it.toInt())) },
+                    synced("hour_height"), { toggle("hour_height") },
+                )
+                Divider(Modifier.padding(vertical = 16.dp))
+
+                // ---- Farben (synced) ----
                 Section(tr("settings.colors"))
-                ColorRow(tr("settings.color.primary"), settings.primaryColor) { update(settings.copy(primaryColor = it)) }
-                ColorRow(tr("settings.color.accent"), settings.accentColor) { update(settings.copy(accentColor = it)) }
-                ColorRow(tr("settings.color.today"), settings.todayColor) { update(settings.copy(todayColor = it)) }
-                ColorRow(tr("settings.color.divider"), settings.monthDividerColor) { update(settings.copy(monthDividerColor = it)) }
-                ColorRow(tr("settings.color.label"), settings.monthLabelColor) { update(settings.copy(monthLabelColor = it)) }
+                SyncColorRow("primary_color", tr("settings.color.primary"), settings.primaryColor, synced("primary_color"), { toggle("primary_color") }) { update(settings.copy(primaryColor = it)) }
+                SyncColorRow("accent_color", tr("settings.color.accent"), settings.accentColor, synced("accent_color"), { toggle("accent_color") }) { update(settings.copy(accentColor = it)) }
+                SyncColorRow("today_color", tr("settings.color.today"), settings.todayColor, synced("today_color"), { toggle("today_color") }) { update(settings.copy(todayColor = it)) }
+                SyncColorRow("text_color", tr("settings.color.text"), settings.textColor, synced("text_color"), { toggle("text_color") }) { update(settings.copy(textColor = it)) }
+                SyncColorRow("bg_color", tr("settings.color.background"), settings.backgroundColor, synced("bg_color"), { toggle("bg_color") }) { update(settings.copy(backgroundColor = it)) }
+                SyncColorRow("line_color", tr("settings.color.line"), settings.lineColor, synced("line_color"), { toggle("line_color") }) { update(settings.copy(lineColor = it)) }
+                SyncColorRow("month_divider_color", tr("settings.color.divider"), settings.monthDividerColor, synced("month_divider_color"), { toggle("month_divider_color") }) { update(settings.copy(monthDividerColor = it)) }
+                SyncColorRow("month_label_color", tr("settings.color.label"), settings.monthLabelColor, synced("month_label_color"), { toggle("month_label_color") }) { update(settings.copy(monthLabelColor = it)) }
                 Divider(Modifier.padding(vertical = 16.dp))
 
-                Section(tr("settings.hourheight"))
-                ChipRow(
-                    options = listOf(
-                        "28" to tr("settings.hourheight.compact"),
-                        "44" to tr("settings.hourheight.normal"),
-                        "60" to tr("settings.hourheight.comfort"),
-                        "80" to tr("settings.hourheight.large"),
-                    ),
-                    selected = settings.hourHeight.toString(),
-                    onSelect = { update(settings.copy(hourHeight = it.toInt())) },
-                )
-                Spacer(Modifier.size(16.dp))
-
-                Section(tr("settings.textcontrast"))
-                ChipRow(
-                    options = listOf(
-                        "1" to tr("settings.contrast.dark"), "2" to tr("settings.contrast.medium"),
-                        "3" to tr("settings.contrast.bright"), "4" to tr("settings.contrast.max"),
-                    ),
-                    selected = settings.textContrast.toString(),
-                    onSelect = { update(settings.copy(textContrast = it.toInt())) },
-                )
-                Spacer(Modifier.size(16.dp))
-                Section(tr("settings.linecontrast"))
-                ChipRow(
-                    options = listOf(
-                        "1" to tr("settings.linecontrast.barely"), "2" to tr("settings.linecontrast.subtle"),
-                        "3" to tr("settings.linecontrast.normal"), "4" to tr("settings.linecontrast.strong"),
-                    ),
-                    selected = settings.lineContrast.toString(),
-                    onSelect = { update(settings.copy(lineContrast = it.toInt())) },
+                // ---- Cache (synced) ----
+                SyncDropdownRow(
+                    tr("settings.cache.range"),
+                    listOf("1" to tr("settings.cache.1m"), "3" to tr("settings.cache.3m"), "6" to tr("settings.cache.6m"), "12" to tr("settings.cache.1y")),
+                    settings.cacheMonths.toString(),
+                    { update(settings.copy(cacheMonths = it.toInt())) },
+                    synced("cache_months"), { toggle("cache_months") },
                 )
                 Divider(Modifier.padding(vertical = 16.dp))
 
-                Section(tr("settings.cache.title"))
-                ChipRow(
-                    options = listOf("1" to tr("settings.cache.1m"), "3" to tr("settings.cache.3m"), "6" to tr("settings.cache.6m"), "12" to tr("settings.cache.1y")),
-                    selected = cacheMonths.toString(),
-                    onSelect = { cacheMonths = it.toInt(); vm.cacheMonths = it.toInt() },
-                )
+                // ---- Gerät (device-local: language + contrast) ----
+                Section(tr("settings.device"))
+                DeviceDropdownRow(
+                    tr("settings.language"),
+                    listOf("system" to tr("lang.system"), "de" to tr("lang.german"), "en" to tr("lang.english")),
+                    settings.language,
+                ) { update(settings.copy(language = it)) }
+                DeviceDropdownRow(
+                    tr("settings.textcontrast"),
+                    listOf("1" to tr("settings.contrast.dark"), "2" to tr("settings.contrast.medium"), "3" to tr("settings.contrast.bright"), "4" to tr("settings.contrast.max")),
+                    settings.textContrast.toString(),
+                ) { update(settings.copy(textContrast = it.toInt())) }
+                DeviceDropdownRow(
+                    tr("settings.linecontrast"),
+                    listOf("1" to tr("settings.linecontrast.barely"), "2" to tr("settings.linecontrast.subtle"), "3" to tr("settings.linecontrast.normal"), "4" to tr("settings.linecontrast.strong")),
+                    settings.lineContrast.toString(),
+                ) { update(settings.copy(lineContrast = it.toInt())) }
+                var hideMenu by remember { mutableStateOf(vm.hideMenuButton) }
+                Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+                    Spacer(Modifier.size(44.dp))
+                    Text(tr("settings.hide_menu_button"), style = MaterialTheme.typography.bodyLarge, modifier = Modifier.weight(1f))
+                    Switch(checked = hideMenu, onCheckedChange = { hideMenu = it; vm.hideMenuButton = it })
+                }
+                Text(tr("settings.device.footer"), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant, modifier = Modifier.padding(start = 44.dp, top = 6.dp))
                 Spacer(Modifier.size(40.dp))
             }
         }
     }
 }
 
+@Composable
+private fun reminderOptions(): List<Pair<String, String>> = listOf(
+    "-1" to tr("reminder.off"), "0" to tr("reminder.at_start"), "5" to "5 min", "15" to "15 min",
+    "30" to "30 min", "60" to "1 h", "1440" to tr("reminder.1d"), "10080" to tr("reminder.1w"),
+)
+
 @Composable
 private fun Section(title: String) {
     Text(title, style = MaterialTheme.typography.titleSmall, fontWeight = FontWeight.SemiBold, modifier = Modifier.padding(bottom = 8.dp))
 }
 
-/** Server-backed "Profil" chapter: display name, login name, email, privacy, shared calendar. */
+
+/** Leading per-row sync toggle: highlighted = synced across devices. */
+@Composable
+private fun SyncIcon(on: Boolean, onClick: () -> Unit) {
+    IconButton(onClick = onClick, modifier = Modifier.size(32.dp)) {
+        Icon(
+            Icons.Filled.Refresh,
+            contentDescription = tr("settings.sync_this"),
+            modifier = Modifier.size(18.dp),
+            tint = if (on) MaterialTheme.colorScheme.primary else MaterialTheme.colorScheme.onSurfaceVariant,
+        )
+    }
+}
+
+// Compact dropdown trigger (a small outlined chip) — much shorter than a full
+// OutlinedTextField, so the settings rows aren't inflated.
+@Composable
+private fun Dropdown(options: List<Pair<String, String>>, selected: String, onSelect: (String) -> Unit) {
+    var expanded by remember { mutableStateOf(false) }
+    val selectedLabel = options.firstOrNull { it.first == selected }?.second ?: selected
+    Box {
+        Row(
+            Modifier
+                .clip(RoundedCornerShape(8.dp))
+                .border(1.dp, MaterialTheme.colorScheme.outline, RoundedCornerShape(8.dp))
+                .clickable { expanded = true }
+                .padding(start = 12.dp, end = 6.dp, top = 6.dp, bottom = 6.dp),
+            verticalAlignment = Alignment.CenterVertically,
+        ) {
+            Text(selectedLabel, style = MaterialTheme.typography.bodyMedium, maxLines = 1)
+            Icon(Icons.Filled.ArrowDropDown, contentDescription = null, tint = MaterialTheme.colorScheme.onSurfaceVariant)
+        }
+        DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
+            options.forEach { (key, label) ->
+                DropdownMenuItem(text = { Text(label) }, onClick = { onSelect(key); expanded = false })
+            }
+        }
+    }
+}
+
+@Composable
+private fun SyncDropdownRow(
+    label: String,
+    options: List<Pair<String, String>>,
+    selected: String,
+    onSelect: (String) -> Unit,
+    synced: Boolean,
+    onToggleSync: () -> Unit,
+) {
+    Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+        SyncIcon(synced, onToggleSync)
+        Spacer(Modifier.size(8.dp))
+        Text(label, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.weight(1f))
+        Dropdown(options, selected, onSelect)
+    }
+}
+
+@Composable
+private fun DeviceDropdownRow(
+    label: String,
+    options: List<Pair<String, String>>,
+    selected: String,
+    onSelect: (String) -> Unit,
+) {
+    Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+        Spacer(Modifier.size(44.dp))
+        Text(label, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.weight(1f))
+        Dropdown(options, selected, onSelect)
+    }
+}
+
+@Composable
+private fun SyncSwitchRow(label: String, checked: Boolean, onChange: (Boolean) -> Unit, synced: Boolean, onToggleSync: () -> Unit) {
+    Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+        SyncIcon(synced, onToggleSync)
+        Spacer(Modifier.size(8.dp))
+        Text(label, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.weight(1f))
+        Switch(checked = checked, onCheckedChange = onChange)
+    }
+}
+
+@Composable
+private fun SyncColorRow(
+    syncKey: String,
+    label: String,
+    current: String,
+    synced: Boolean,
+    onToggleSync: () -> Unit,
+    onPick: (String) -> Unit,
+) {
+    var showPicker by remember { mutableStateOf(false) }
+    Row(Modifier.fillMaxWidth().padding(vertical = 6.dp), verticalAlignment = Alignment.CenterVertically) {
+        SyncIcon(synced, onToggleSync)
+        Spacer(Modifier.size(8.dp))
+        Text(label, style = MaterialTheme.typography.bodyMedium, modifier = Modifier.weight(1f))
+        Text(colorFromHex(current).toHex(), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
+        Spacer(Modifier.size(12.dp))
+        Box(
+            Modifier.size(28.dp).clip(CircleShape).background(colorFromHex(current))
+                .border(1.dp, MaterialTheme.colorScheme.outline, CircleShape)
+                .clickable { showPicker = true },
+        )
+        TextButton(onClick = { onPick(DEFAULT_COLORS[syncKey] ?: "#000000") }, contentPadding = PaddingValues(horizontal = 8.dp)) {
+            Text(tr("settings.reset"), style = MaterialTheme.typography.labelSmall)
+        }
+    }
+    if (showPicker) {
+        ColorPickerDialog(
+            initial = current,
+            title = label,
+            onDismiss = { showPicker = false },
+            onConfirm = { showPicker = false; onPick(it) },
+        )
+    }
+}
+
+/** Server-backed "Profil" chapter: name, login, email, hide-profile, privacy, shared calendar. */
+@OptIn(ExperimentalMaterial3Api::class)
 @Composable
 private fun ProfileChapter(vm: SettingsViewModel) {
     val savedLabel = tr("settings.saved")
@@ -210,6 +373,14 @@ private fun ProfileChapter(vm: SettingsViewModel) {
         modifier = Modifier.fillMaxWidth(),
     )
     Spacer(Modifier.size(8.dp))
+    Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+        Column(Modifier.weight(1f)) {
+            Text(tr("settings.directory_hidden"), style = MaterialTheme.typography.bodyLarge)
+            Text(tr("settings.directory_hidden.desc"), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
+        }
+        Switch(checked = vm.directoryHidden, onCheckedChange = vm::onDirectoryHiddenChange)
+    }
+    Spacer(Modifier.size(8.dp))
     Button(onClick = { vm.saveProfile(savedLabel) }) { Text(tr("event.save")) }
     vm.profileMessage?.let {
         Spacer(Modifier.size(8.dp))
@@ -218,11 +389,14 @@ private fun ProfileChapter(vm: SettingsViewModel) {
     Divider(Modifier.padding(vertical = 16.dp))
 
     Section(tr("settings.privacy"))
-    ChipRow(
-        options = listOf("busy" to tr("settings.private.busy"), "hidden" to tr("settings.private.hidden")),
-        selected = vm.privateVisibility,
-        onSelect = vm::changePrivateVisibility,
-    )
+    Row(Modifier.fillMaxWidth().padding(vertical = 4.dp), verticalAlignment = Alignment.CenterVertically) {
+        Text(tr("settings.private_visibility"), style = MaterialTheme.typography.bodyLarge, modifier = Modifier.weight(1f))
+        Dropdown(
+            listOf("busy" to tr("settings.private.busy"), "hidden" to tr("settings.private.hidden")),
+            vm.privateVisibility,
+            vm::changePrivateVisibility,
+        )
+    }
     Spacer(Modifier.size(6.dp))
     Text(tr("settings.private_visibility.desc"), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
     Divider(Modifier.padding(vertical = 16.dp))
@@ -256,35 +430,3 @@ private fun CalendarDropdown(vm: SettingsViewModel) {
         }
     }
 }
-
-@OptIn(ExperimentalMaterial3Api::class)
-@Composable
-private fun ChipRow(options: List<Pair<String, String>>, selected: String, onSelect: (String) -> Unit) {
-    Row(Modifier.fillMaxWidth().horizontalScroll(rememberScrollState()), horizontalArrangement = Arrangement.spacedBy(8.dp)) {
-        options.forEach { (key, label) ->
-            FilterChip(selected = key == selected, onClick = { onSelect(key) }, label = { Text(label) })
-        }
-    }
-}
-
-@Composable
-private fun ColorRow(label: String, current: String, onPick: (String) -> Unit) {
-    var showPicker by remember { mutableStateOf(false) }
-    Row(
-        Modifier.fillMaxWidth().clickable { showPicker = true }.padding(vertical = 10.dp),
-        verticalAlignment = Alignment.CenterVertically,
-    ) {
-        Box(Modifier.size(28.dp).clip(CircleShape).background(colorFromHex(current)).border(1.dp, MaterialTheme.colorScheme.outline, CircleShape))
-        Spacer(Modifier.size(12.dp))
-        Text(label, style = MaterialTheme.typography.bodyLarge, modifier = Modifier.weight(1f))
-        Text(colorFromHex(current).toHex(), style = MaterialTheme.typography.bodySmall, color = MaterialTheme.colorScheme.onSurfaceVariant)
-    }
-    if (showPicker) {
-        ColorPickerDialog(
-            initial = current,
-            title = label,
-            onDismiss = { showPicker = false },
-            onConfirm = { showPicker = false; onPick(it) },
-        )
-    }
-}

app/src/main/java/com/scarriffle/calendarr/ui/settings/SettingsViewModel.kt

@@ -19,18 +19,40 @@ class SettingsViewModel @Inject constructor(
     private val settingsStore: SettingsStore,
 ) : ViewModel() {
 
-    /** Persist locally immediately, then sync to the server in the background. */
+    /** Persist locally immediately, then push the synced values to the server. */
     fun apply(settings: AppSettings, onSynced: () -> Unit) {
         settingsStore.saveSettings(settings)
         viewModelScope.launch {
-            runCatching { repository.updateSettings(settings) }
+            runCatching { repository.updateSettings(settings, settingsStore.loadSyncFlags()) }
             onSynced()
         }
     }
 
-    var cacheMonths: Int
-        get() = settingsStore.cacheMonths
-        set(value) { settingsStore.cacheMonths = value }
+    /** Device-local: hide the top-bar menu button (drawer opens via edge-swipe). */
+    var hideMenuButton: Boolean
+        get() = settingsStore.hideMenuButton
+        set(value) { settingsStore.hideMenuButton = value }
+
+    // ---- Per-setting sync flags ----
+
+    val syncableKeys: List<String> get() = settingsStore.syncableKeys
+    var syncFlags by mutableStateOf(settingsStore.loadSyncFlags())
+        private set
+
+    /** Toggle one setting's flag. Enabling adopts this device's current value
+     *  (pushes the synced values up); disabling keeps the value local. */
+    fun toggleSync(key: String, current: AppSettings, onSynced: () -> Unit) {
+        settingsStore.setSyncFlag(key, !(syncFlags[key] ?: false))
+        syncFlags = settingsStore.loadSyncFlags()
+        viewModelScope.launch { runCatching { repository.updateSettings(current, syncFlags) }; onSynced() }
+    }
+
+    /** Global "sync everything" switch. */
+    fun setAllSync(on: Boolean, current: AppSettings, onSynced: () -> Unit) {
+        settingsStore.setAllSyncFlags(on)
+        syncFlags = settingsStore.loadSyncFlags()
+        viewModelScope.launch { runCatching { repository.updateSettings(current, syncFlags) }; onSynced() }
+    }
 
     // ---- Profile chapter (server-backed) ----
 
@@ -38,6 +60,8 @@ class SettingsViewModel @Inject constructor(
     var loginName by mutableStateOf("")
     var email by mutableStateOf("")
         private set
+    var directoryHidden by mutableStateOf(false)
+        private set
     var privateVisibility by mutableStateOf("busy")
         private set
     var groupVisibleId by mutableStateOf(0) // 0 = none
@@ -51,6 +75,7 @@ class SettingsViewModel @Inject constructor(
 
     fun onDisplayNameChange(v: String) { displayName = v }
     fun onEmailChange(v: String) { email = v }
+    fun onDirectoryHiddenChange(v: Boolean) { directoryHidden = v }
 
     private fun loadProfile() {
         viewModelScope.launch {
@@ -58,13 +83,16 @@ class SettingsViewModel @Inject constructor(
                 displayName = p.displayName ?: p.username
                 loginName = p.username
                 email = p.email ?: ""
+                directoryHidden = p.directoryHidden
             }
             runCatching { repository.getSettings() }.onSuccess { s ->
                 privateVisibility = s.privateEventVisibility
                 groupVisibleId = s.groupVisibleCalendarId ?: 0
             }
             runCatching { repository.getLocalCalendars() }.onSuccess { cals ->
-                ownLocalCalendars = cals.filter { it.owned && !it.group }
+                // A birthday calendar may be shared directly, but never stand in
+                // as the group-visible personal calendar.
+                ownLocalCalendars = cals.filter { it.owned && !it.group && !it.isBirthday }
             }
         }
     }
@@ -76,6 +104,7 @@ class SettingsViewModel @Inject constructor(
                     displayName = displayName.trim().ifEmpty { null },
                     username = null,
                     email = email.trim(),
+                    directoryHidden = directoryHidden,
                 )
             }
                 .onSuccess { profileMessage = savedLabel }

app/src/main/java/com/scarriffle/calendarr/ui/theme/Theme.kt

@@ -1,58 +1,74 @@
 package com.scarriffle.calendarr.ui.theme
 
+import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Shapes
 import androidx.compose.material3.Typography
 import androidx.compose.material3.darkColorScheme
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.lerp
+import androidx.compose.ui.unit.dp
 import com.scarriffle.calendarr.domain.model.AppSettings
 import com.scarriffle.calendarr.util.colorFromHex
 import com.scarriffle.calendarr.util.contrastingTextColor
 
-/**
- * The Calendarr brand accent — the green from the iOS `AccentColor` asset
- * (#20A050). This drives the global control tint (buttons, FAB, switches,
- * top bar) regardless of the server's per-calendar colours, matching iOS
- * where the app tint is fixed and `primary_color` only styles calendar
- * elements (e.g. the "today" highlight, read from [AppSettings]).
- */
+/** Fallback brand accent (iOS `AccentColor` #20A050) used only when the user's
+ *  primary colour is unset. */
 val BrandGreen = Color(0xFF20A050)
 
+/**
+ * Fully dynamic theme: every colour is derived from [AppSettings] so the whole
+ * app follows the user's palette (matching the web client). primary/accent tint
+ * the controls; background/text/line drive `background`/`onBackground`/`outline`,
+ * which the calendar views already read (grid, secondary text). "today", divider
+ * and label colours are read directly in the views.
+ */
 @Composable
 fun CalendarrTheme(
     settings: AppSettings = AppSettings(),
     content: @Composable () -> Unit,
 ) {
-    val primary = BrandGreen
+    val primary = colorFromHex(settings.primaryColor, BrandGreen)
+    val accent = colorFromHex(settings.accentColor, primary)
+    val bg = colorFromHex(settings.backgroundColor, Color(0xFF000000))
+    val onBg = colorFromHex(settings.textColor, Color(0xFFF2F2F7))
+    val line = colorFromHex(settings.lineColor, Color(0xFF3A3A52))
+
+    val surface = lerp(bg, Color.White, 0.10f)
+    val surfaceVariant = lerp(bg, Color.White, 0.17f)
+    val container = lerp(primary, Color.Black, 0.55f)
+    val onContainer = lerp(primary, Color.White, 0.75f)
 
-    val container = Color(0xFF14532D)
-    val onContainer = Color(0xFFB7F0C6)
     val colors = darkColorScheme(
         primary = primary,
         onPrimary = primary.contrastingTextColor(),
         primaryContainer = container,
         onPrimaryContainer = onContainer,
-        secondary = primary,
-        onSecondary = primary.contrastingTextColor(),
+        secondary = accent,
+        onSecondary = accent.contrastingTextColor(),
         secondaryContainer = container,
         onSecondaryContainer = onContainer,
-        tertiary = primary,
-        onTertiary = primary.contrastingTextColor(),
+        tertiary = accent,
+        onTertiary = accent.contrastingTextColor(),
         tertiaryContainer = container,
         onTertiaryContainer = onContainer,
         surfaceTint = primary,
-        background = Color(0xFF000000),
-        onBackground = Color(0xFFF2F2F7),
-        surface = Color(0xFF1C1C1E),
-        onSurface = Color(0xFFF2F2F7),
-        surfaceVariant = Color(0xFF2C2C2E),
-        onSurfaceVariant = Color(0xFFBEBEC4),
-        outline = Color(0xFF3A3A3C),
+        background = bg,
+        onBackground = onBg,
+        surface = surface,
+        onSurface = onBg,
+        surfaceVariant = surfaceVariant,
+        onSurfaceVariant = onBg.copy(alpha = 0.7f),
+        outline = line,
     )
 
     MaterialTheme(
         colorScheme = colors,
         typography = Typography(),
+        // extraSmall drives DropdownMenu containers (default 4dp looks boxy);
+        // rounder popups to match the iOS look.
+        shapes = Shapes(extraSmall = RoundedCornerShape(14.dp)),
         content = content,
     )
 }

app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@color/ic_launcher_background"/>
+    <foreground android:drawable="@mipmap/ic_launcher_foreground"/>
+</adaptive-icon>

app/src/main/res/values/themes.xml

@@ -1,5 +1,6 @@
 <resources>
     <color name="splash_bg">#000000</color>
+    <color name="ic_launcher_background">#16703D</color>
 
     <style name="Theme.Calendarr" parent="Theme.Material3.DayNight.NoActionBar">
         <!-- Black window/system bars (matches the app background). -->

fastlane/metadata/android/de-DE/changelogs/2.txt

@@ -0,0 +1,5 @@
+* Pro-Einstellung-Synchronisierung mit einheitlicher Einstellungstabelle
+* Neue linke Seitenleiste: Kalender ein-/ausblenden & sortieren, Gruppenwechsel, Schnellmenü
+* Geburtstage aus den Kontakten importieren
+* Voll dynamische Theme-Farben (8 einstellbare Farben mit Reset)
+* Fix: mehrtägige Ganztags-Termine werden in Wochen-/Tagesansicht durchgehend dargestellt

fastlane/metadata/android/de-DE/full_description.txt

@@ -0,0 +1,19 @@
+Calendarr ist die Android-App für deinen eigenen, selbst gehosteten Calendarr-Server — ein privater, werbefreier Kalender, dessen Daten auf deiner Infrastruktur bleiben.
+
+Binde die Quellen ein, die du ohnehin nutzt:
+* Lokale Kalender auf dem Server
+* CalDAV-Konten
+* iCal-/ICS-Abos
+* Google Kalender
+* Home Assistant
+
+Funktionen:
+* Monats-, Wochen-, Tages-, Quartals- und Terminansicht
+* Seitenleiste zum Ein-/Ausblenden und Sortieren von Kalendern, Gruppenwechsel und Zugriff aufs Menü
+* Kalender mit anderen teilen und in Gruppen organisieren
+* Geburtstage: eigener Geburtstagskalender mit Alter und Erinnerungen, optional aus deinen Kontakten importiert
+* Pro-Einstellung-Synchronisierung über Geräte — du wählst genau, welche Einstellung dir über Web, iOS und Android folgt
+* Frei anpassbare Farben und dunkle Oberfläche
+* Termin-Erinnerungen / Benachrichtigungen
+
+Calendarr benötigt Zugriff auf einen (selbst gehosteten) Calendarr-Server. Server-URL eingeben, dann anmelden.

fastlane/metadata/android/de-DE/short_description.txt

@@ -0,0 +1 @@
+Kalender-App für deinen selbst gehosteten Calendarr-Server

fastlane/metadata/android/de-DE/title.txt

@@ -0,0 +1 @@
+Calendarr

fastlane/metadata/android/en-US/changelogs/2.txt

@@ -0,0 +1,5 @@
+* Per-setting cross-device sync with a unified settings table
+* New left navigation drawer: show/hide & reorder calendars, group switch, quick menu
+* Import birthdays from your contacts
+* Fully dynamic theme colours (8 configurable colours with reset)
+* Fix: multi-day all-day events now span correctly in week/day view

fastlane/metadata/android/en-US/full_description.txt

@@ -0,0 +1,19 @@
+Calendarr is the Android client for your own self-hosted Calendarr server — a private, ad-free calendar whose data stays on your infrastructure.
+
+Bring together the sources you already use:
+* Local calendars on the server
+* CalDAV accounts
+* iCal / ICS subscriptions
+* Google Calendar
+* Home Assistant
+
+Features:
+* Month, week, day, quarter and agenda views
+* A left drawer to show/hide and reorder your calendars, switch groups, and reach the menu
+* Share calendars with other users and organise them in groups
+* Birthdays: a dedicated birthday calendar with age and reminders, optionally imported from your contacts
+* Per-setting cross-device sync — choose exactly which settings follow you across web, iOS and Android
+* Fully customisable colours and a dark interface
+* Event reminders / notifications
+
+Calendarr requires access to a Calendarr server (self-hosted). Enter your server URL, then sign in.

fastlane/metadata/android/en-US/short_description.txt

@@ -0,0 +1 @@
+Calendar client for your self-hosted Calendarr server

fastlane/metadata/android/en-US/title.txt

@@ -0,0 +1 @@
+Calendarr

fdroid/com.scarriffle.calendarr.yml

@@ -0,0 +1,30 @@
+# F-Droid build recipe for the OFFICIAL repository.
+# Submit this file to https://gitlab.com/fdroid/fdroiddata as
+#   metadata/com.scarriffle.calendarr.yml
+# (see FDROID.md). F-Droid clones the source below, builds it on their servers
+# and signs it with F-Droid's key. Requires the SourceCode repo to be publicly
+# clonable and a git tag `v<versionName>` (e.g. v1.1.0) for each release.
+
+Categories:
+  - Time
+License: GPL-3.0-or-later
+AuthorName: Scarriffle
+WebSite: https://calendar.scarriffle.com
+SourceCode: https://git.scarriffle.com/Scarriffle/Calendarr-Android
+IssueTracker: https://git.scarriffle.com/Scarriffle/Calendarr-Android/issues
+
+RepoType: git
+Repo: https://git.scarriffle.com/Scarriffle/Calendarr-Android.git
+
+Builds:
+  - versionName: 1.1.0
+    versionCode: 2
+    commit: v1.1.0
+    subdir: app
+    gradle:
+      - yes
+
+AutoUpdateMode: Version v%v
+UpdateCheckMode: Tags
+CurrentVersion: 1.1.0
+CurrentVersionCode: 2

keystore.properties.example

@@ -0,0 +1,9 @@
+# Copy this file to "keystore.properties" (git-ignored) and fill in your real
+# values to enable a signed release build:  ./gradlew bundleRelease
+#
+# storeFile: ABSOLUTE path to your upload keystore (.jks). Keep the keystore and
+# this filled-in file OUT of version control (both are git-ignored).
+storeFile=/absolute/path/to/upload-keystore.jks
+storePassword=CHANGE_ME
+keyAlias=upload
+keyPassword=CHANGE_ME