release: cut v2.2.0 — tap-to-create + local calendar management

Day/week: tap an empty slot to open the create form prefilled with that
day and the tapped hour (snapped to the hour, 1 h long). Threaded a start
time through CalendarHost → EventEditScreen → openNew; the FAB keeps its
default.

Local calendars: a full-screen editor from Settings → Calendars to
create/rename/recolor/delete device-only calendars (ACCOUNT_TYPE_LOCAL,
sync-adapter insert) with name, pastel-previewed colour, and a description
(stored in CAL_SYNC1). Synced calendars are listed read-only grouped by
account, each with a "manage in source app" deep-link resolved from the
account's own authenticator (DAVx5/ICSx5/…), plus an add-account shortcut;
a <queries> block makes the source apps launchable. Extracted a shared
InlineTextField into ui.common so the event form and calendar editor share
one borderless input style.

Tests: repository delegation + write-failure, mapper isLocal/description,
fake data source extended. Version bumped to 2.2.0 / 20200.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/src/main/res/values-de/strings.xml

@@ -211,6 +211,9 @@
     <string name="settings_section_notifications">Benachrichtigungen</string>
     <string name="settings_reminders">Termin-Erinnerungen</string>
     <string name="settings_reminders_hint">Erinnerungen doppelt? Eine andere Kalender-App zeigt sie ebenfalls — schalte sie in einer der beiden ab.</string>
+    <string name="settings_section_calendars">Kalender</string>
+    <string name="settings_manage_calendars">Kalender verwalten</string>
+    <string name="settings_manage_calendars_hint">Lokale Kalender anlegen, synchronisierte verwalten</string>
     <string name="settings_section_language">Sprache</string>
     <string name="settings_language">App-Sprache</string>
     <string name="settings_language_auto">Systemstandard</string>
@@ -222,4 +225,22 @@
     <string name="settings_license_value">MIT</string>
     <string name="settings_source">Quellcode</string>
     <string name="settings_source_open">Öffnen</string>
+
+    <!-- Calendar manager -->
+    <string name="calendars_title">Kalender</string>
+    <string name="calendars_local_header">Deine Kalender</string>
+    <string name="calendars_local_empty">Noch keine lokalen Kalender. Lege einen an, um Termine nur auf diesem Gerät zu speichern.</string>
+    <string name="calendars_add">Kalender hinzufügen</string>
+    <string name="calendars_synced_header">Synchronisierte Kalender</string>
+    <string name="calendars_synced_hint">Diese stammen von Konten auf deinem Gerät. Erstelle und bearbeite sie in der jeweiligen App.</string>
+    <string name="calendars_manage_in_app">Verwalten</string>
+    <string name="calendars_add_account">Konto hinzufügen</string>
+    <string name="calendars_new_title">Neuer Kalender</string>
+    <string name="calendars_edit_title">Kalender bearbeiten</string>
+    <string name="calendars_name_label">Name</string>
+    <string name="calendars_color_label">Farbe</string>
+    <string name="calendars_description_hint">Beschreibung hinzufügen</string>
+    <string name="calendars_delete_confirm_title">Kalender löschen?</string>
+    <string name="calendars_delete_confirm_message">\"%1$s\" und alle zugehörigen Termine werden dauerhaft von diesem Gerät entfernt.</string>
+    <string name="calendars_write_error">Änderung konnte nicht gespeichert werden.</string>
 </resources>