Redesign the settings screen into uniform rows (sync icon | name | value):
dropdowns replace the chip pickers, every colour gets a reset to a canonical
default, a per-row sync icon toggles that setting's cross-device sync, and a
global switch flips all. Enabling a flag adopts this device's current value.
- AppSettings/SettingsStore: add text/bg/line colours, cache_months,
month_view_paged, and the account-wide sync_flags map (+ DEFAULT_SYNC,
effective-merge on pull)
- CalendarRepository.updateSettings: partial PUT of only the synced values plus
the flag map (unsynced columns stay untouched server-side)
- Theme: fully dynamic — primary/accent tint, background/text/line drive
background/onBackground/outline (matching web); today/divider/label unchanged
- add hide-profile (directory_hidden) to the profile block (parity with web/iOS)
- language + text/line contrast stay device-local
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
fd804000c5