iOS drawer: flat reorderable calendars, long-press menu, left-swipe close, header actions

Testing feedback:
- calendars are now one flat, drag-reorderable list (no per-source grouping);
  order is device-local (CalendarStore.calendarOrder, mirrors the web cal_order).
  Reordering is done via a 'Sort' toggle (native edit mode with drag handles).
- banish + reminder-mute moved from row swipe actions to a long-press context
  menu, which frees the horizontal swipe: swiping the drawer left closes it.
- the hamburger moved to the LEFT (drawer opens left); new device-local setting
  'Hide menu button' (open via edge-swipe only), not synced.
- the settings entry moved from the footer into the header as an icon, next to a
  restored manual-sync icon and the close button; the footer button is gone.

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

Calendarr iOS/Models/Localization.swift

@@ -89,6 +89,7 @@ private let strings: [String: [String: String]] = [
         "settings.color.surface": "Topbar-/Oberflächenfarbe",
         "settings.surface.auto": "Auto (Milchglas)",
         "settings.device": "Nur auf diesem Gerät",
+        "settings.hide_menu_button": "Menü-Button ausblenden",
         "settings.device.footer": "Diese Einstellungen gelten nur auf diesem Gerät und werden nicht synchronisiert.",
 
         "settings.cache.header": "Vorladen",
@@ -331,6 +332,8 @@ private let strings: [String: [String: String]] = [
         "filter.empty": "Keine Kalender vorhanden",
         "filter.show_all": "Alle anzeigen",
         "filter.hide_all": "Alle ausblenden",
+        "filter.sort": "Sortieren",
+        "filter.done": "Fertig",
         "filter.button": "Kalender ein-/ausblenden",
         "filter.banish": "Dauerhaft ausblenden",
         "filter.reminders_on": "Benachrichtigungen an",
@@ -460,6 +463,7 @@ private let strings: [String: [String: String]] = [
         "settings.color.surface": "Top bar / surface color",
         "settings.surface.auto": "Auto (translucent)",
         "settings.device": "This device only",
+        "settings.hide_menu_button": "Hide menu button",
         "settings.device.footer": "These settings apply to this device only and are not synced.",
 
         "settings.cache.header": "Preloading",
@@ -702,6 +706,8 @@ private let strings: [String: [String: String]] = [
         "filter.empty": "No calendars available",
         "filter.show_all": "Show all",
         "filter.hide_all": "Hide all",
+        "filter.sort": "Sort",
+        "filter.done": "Done",
         "filter.button": "Show/hide calendars",
         "filter.banish": "Hide permanently",
         "filter.reminders_on": "Reminders on",