Merge pull request 'feat(edit): move an event to another calendar (#39)' (#73) from feat/change-event-calendar into release/v2.15.0

The release/* branch protection requires the "Translations / check" status,
but the workflow was path-filtered to translation resources. A code-only PR
targeting a release branch never touches those, so the workflow never ran,
never posted its status, and the required check stayed pending forever —
permanently blocking the merge (only PRs that happened to change strings could
satisfy it).

Drop the path filter so it runs on every PR, mirroring the always-on `ci` job.
The parity check is SDK-free and passes when the committed translations are
consistent, so running it on unrelated PRs is effectively free.

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

.gitea/workflows/translations.yaml

@@ -3,13 +3,15 @@ name: Translations
 # Fast, SDK-free parity check for translation resources, so Weblate PRs (which
 # only touch values-*/strings.xml) get quick feedback without the full Android
 # build. The deeper checks still run in CI via lintDebug (ExtraTranslation).
+#
+# Runs on every PR (no path filter) so the required "Translations / check"
+# status is always reported — like the `ci` job. A path-filtered workflow is
+# skipped on unrelated PRs and never posts its status, which leaves that
+# required check pending forever and blocks the merge of any code-only PR into a
+# release/* branch. The check itself is cheap and simply passes when the
+# committed translations are consistent, so always running it costs nothing.
 on:
   pull_request:
-    paths:
-      - 'app/src/main/res/values*/strings.xml'
-      - 'app/src/main/res/xml/locales_config.xml'
-      - 'scripts/check_translations.py'
-      - '.gitea/workflows/translations.yaml'
 
 concurrency:
   group: translations-${{ github.ref }}

CHANGELOG.md

@@ -7,41 +7,15 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [2.14.1] — 2026-07-13
+### Added
-
+- Move an event to another calendar. When editing an existing event, the
-### Fixed
+  calendar row is now tappable — pick a different calendar and saving moves the
-- Deleting one occurrence of a repeating event no longer breaks the series.
+  event across, instead of having to delete it and recreate it elsewhere.
-  Choosing "This event" when deleting an occurrence of a recurring event could
+  Recurring series move as a whole, keeping their individually-edited and
-  wipe out every *other* occurrence while leaving the one you deleted behind as
+  cancelled occurrences, and any reminders and guests come along too. A calendar
-  a stale, still-tappable ghost — and deleting it again brought the series back.
+  can't simply be reassigned underneath an event, so Calendula recreates it on
-  A single-occurrence delete now removes exactly that occurrence and leaves the
+  the target and removes the original — the same approach other calendar apps
-  rest of the series untouched, and the deleted occurrence disappears from the
+  take. Thanks to @prismplex for the suggestion ([#39]).
-  grid straight away. This holds on every kind of calendar, including the
-  on-device ones Calendula keeps for contact birthdays and anniversaries, where
-  the series is a yearly repeat. Thanks to @moonj for the report ([#47]).
-- Tapping an event in a third-party widget opens it in Calendula. v2.13.1 taught
-  Calendula to answer the "new event" hand-off from other apps and widgets; now
-  it also answers the "open this event" one, so tapping an existing event in a
-  widget such as Todo Agenda offers Calendula and lands on that event's details.
-  Thanks to @bushrang3r for the report ([#48]).
-- Events created from other apps get your default reminder. An event handed over
-  by another app or widget — Google Maps' "add to calendar", the Todo Agenda
-  widget's "+" — opened with no reminder at all, ignoring the default set in
-  Settings. It now starts with your default reminder, the same as an event you
-  create in Calendula. An event opened from an `.ics` file is treated differently,
-  because the file has its own say: Calendula keeps whatever reminders it carries
-  (including none at all) and asks you once whether to apply your default instead
-  — it never quietly overrides the file. If you have no default set, it doesn't
-  ask ([#49]).
-- A tidy colour picker on CalDAV calendars. For calendars synced by a CalDAV
-  app (such as DAVx5), the event colour picker showed every colour the account
-  publishes — nearly 150 swatches in alphabetical order, many of them
-  duplicates or near-identical shades. The picker now shows only visually
-  distinct colours, arranged as a rainbow; near-duplicate shades and the
-  washed-out neutrals are folded away so no two swatches look alike. Picked
-  colours still sync exactly as before, and calendars with hand-picked
-  palettes (like Google's) are unaffected. Thanks to @ptab for the report
-  ([#22]).
 
 ## [2.14.0] — 2026-07-06
 
@@ -903,7 +877,6 @@ automatically, with zero telemetry and no internet permission.
 [#18]: https://codeberg.org/jlmakiola/calendula/issues/18
 [#19]: https://codeberg.org/jlmakiola/calendula/issues/19
 [#20]: https://codeberg.org/jlmakiola/calendula/issues/20
-[#22]: https://codeberg.org/jlmakiola/calendula/issues/22
 [#24]: https://codeberg.org/jlmakiola/calendula/issues/24
 [#25]: https://codeberg.org/jlmakiola/calendula/issues/25
 [#27]: https://codeberg.org/jlmakiola/calendula/issues/27
@@ -913,6 +886,4 @@ automatically, with zero telemetry and no internet permission.
 [#33]: https://codeberg.org/jlmakiola/calendula/issues/33
 [#34]: https://codeberg.org/jlmakiola/calendula/issues/34
 [#37]: https://codeberg.org/jlmakiola/calendula/issues/37
-[#47]: https://codeberg.org/jlmakiola/calendula/issues/47
+[#39]: https://codeberg.org/jlmakiola/calendula/issues/39
-[#48]: https://codeberg.org/jlmakiola/calendula/issues/48
-[#49]: https://codeberg.org/jlmakiola/calendula/issues/49

app/build.gradle.kts

@@ -28,8 +28,8 @@ android {
         // which builds this version and then creates the matching vX.Y.Z tag +
         // release itself (versionCode is pinned to MAJOR*10000 + MINOR*100 +
         // PATCH from versionName, e.g. 2.7.2 -> 20702). See docs/RELEASING.md.
-        versionCode = 21401
+        versionCode = 21400
-        versionName = "2.14.1"
+        versionName = "2.14.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/AndroidManifest.xml

@@ -123,22 +123,6 @@
                 <data android:mimeType="vnd.android.cursor.dir/event" />
             </intent-filter>
 
-            <!-- Open an existing event another app/widget points at (e.g. tapping
-                 an event in the Todo Agenda widget): ACTION_VIEW on
-                 content://com.android.calendar/events/<id>, the way AOSP fires it.
-                 Matched by the provider's item MIME type, not the path — a
-                 content: VIEW intent carries the resolved type
-                 (vnd.android.cursor.item/event) and a path-only filter wouldn't
-                 match it. The occurrence's times ride as EXTRA_EVENT_BEGIN_TIME /
-                 EXTRA_EVENT_END_TIME when the launcher supplies them
-                 (MainActivity.viewEventKeyOrNull, issue #48). -->
-            <intent-filter>
-                <action android:name="android.intent.action.VIEW" />
-                <category android:name="android.intent.category.DEFAULT" />
-                <category android:name="android.intent.category.BROWSABLE" />
-                <data android:mimeType="vnd.android.cursor.item/event" />
-            </intent-filter>
-
             <!-- Launcher long-press shortcuts (e.g. "New event"). -->
             <meta-data
                 android:name="android.app.shortcuts"

app/src/main/java/de/jeanlucmakiola/calendula/MainActivity.kt

@@ -32,7 +32,6 @@ import de.jeanlucmakiola.calendula.ui.common.LocalShowHourLines
 import de.jeanlucmakiola.calendula.ui.common.LocalUse24HourFormat
 import de.jeanlucmakiola.calendula.ui.WidgetNavRequest
 import de.jeanlucmakiola.calendula.ui.common.CalendarView
-import de.jeanlucmakiola.calendula.ui.detail.EventDetailViewModel.Companion.NO_OCCURRENCE_TIME
 import de.jeanlucmakiola.floret.components.DebugRibbon
 import de.jeanlucmakiola.calendula.ui.crash.CrashReportActivity
 import de.jeanlucmakiola.calendula.domain.FontRole
@@ -91,7 +90,7 @@ class MainActivity : AppCompatActivity() {
         }
 
         enableEdgeToEdge()
-        requestedDetailKey = intent.detailKeyOrNull() ?: intent.viewEventKeyOrNull()
+        requestedDetailKey = intent.detailKeyOrNull()
         requestedNav = intent.navRequestOrNull()
         requestedImportUri = intent.importUriOrNull()
         requestedInsertForm = intent.insertFormOrNull()
@@ -179,7 +178,7 @@ class MainActivity : AppCompatActivity() {
 
     override fun onNewIntent(intent: Intent) {
         super.onNewIntent(intent)
-        (intent.detailKeyOrNull() ?: intent.viewEventKeyOrNull())?.let { requestedDetailKey = it }
+        intent.detailKeyOrNull()?.let { requestedDetailKey = it }
         intent.navRequestOrNull()?.let { requestedNav = it }
         intent.importUriOrNull()?.let { requestedImportUri = it }
         intent.insertFormOrNull()?.let { requestedInsertForm = it }
@@ -294,30 +293,6 @@ class MainActivity : AppCompatActivity() {
         )
     }
 
-    /**
-     * The detail key for an external "open this event" — ACTION_VIEW on
-     * `content://com.android.calendar/events/<id>`, the way AOSP fires it (e.g.
-     * tapping an existing event in the Todo Agenda widget, issue #48). Reuses the
-     * same occurrence-key channel as reminder taps. The launcher passes the
-     * occurrence's times as `EXTRA_EVENT_BEGIN_TIME` / `EXTRA_EVENT_END_TIME` when
-     * it has them; a bare URI omits them, so we carry [NO_OCCURRENCE_TIME] and
-     * [EventDetailViewModel] falls back to the event row's own DTSTART/DTEND
-     * rather than rendering at the epoch.
-     */
-    private fun Intent.viewEventKeyOrNull(): LongArray? {
-        if (action != Intent.ACTION_VIEW) return null
-        val uri = data ?: return null
-        if (uri.host != CALENDAR_PROVIDER_HOST) return null
-        val segments = uri.pathSegments
-        if (segments.firstOrNull() != "events") return null
-        val eventId = segments.getOrNull(1)?.toLongOrNull() ?: return null
-        return longArrayOf(
-            eventId,
-            longExtraOrNull(CalendarContract.EXTRA_EVENT_BEGIN_TIME) ?: NO_OCCURRENCE_TIME,
-            longExtraOrNull(CalendarContract.EXTRA_EVENT_END_TIME) ?: NO_OCCURRENCE_TIME,
-        )
-    }
-
     companion object {
         // The calendar provider's authority/host. A date tap arrives as
         // ACTION_VIEW on content://com.android.calendar/time/<epochMillis>.

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarDataSource.kt

@@ -18,11 +18,12 @@ import android.util.Log
 import androidx.core.content.ContextCompat
 import dagger.hilt.android.qualifiers.ApplicationContext
 import de.jeanlucmakiola.calendula.domain.Attendee
+import de.jeanlucmakiola.calendula.domain.AttendeeRelationship
+import de.jeanlucmakiola.calendula.domain.AttendeeType
 import de.jeanlucmakiola.calendula.domain.CalendarSource
 import de.jeanlucmakiola.calendula.domain.EventAttendee
 import de.jeanlucmakiola.calendula.domain.EventColorOption
 import de.jeanlucmakiola.calendula.domain.EventDetail
-import de.jeanlucmakiola.calendula.domain.curatedForPicker
 import de.jeanlucmakiola.calendula.domain.EventForm
 import de.jeanlucmakiola.calendula.domain.EventInstance
 import de.jeanlucmakiola.calendula.domain.EventStatus
@@ -64,12 +65,10 @@ interface CalendarDataSource {
 
     /**
      * The event-colour palette the calendar's account publishes
-     * (`CalendarContract.Colors`, `TYPE_EVENT`), curated for display — deduped,
+     * (`CalendarContract.Colors`, `TYPE_EVENT`), sorted by key. Empty when the
-     * thinned to visually distinct swatches when oversized (CalDAV adapters
+     * account exposes no palette (most local calendars, some CalDAV) — the
-     * publish all ~147 CSS3 names, #22) and hue-sorted; see [curatedForPicker].
+     * signal that a custom colour can only be written as a raw `EVENT_COLOR`,
-     * Empty when the account exposes no palette (most local calendars, some
+     * which a synced calendar may drop on its next sync.
-     * CalDAV) — the signal that a custom colour can only be written as a raw
-     * `EVENT_COLOR`, which a synced calendar may drop on its next sync.
      */
     fun eventColorPalette(calendarId: Long): List<EventColorOption>
 
@@ -179,6 +178,25 @@ interface CalendarDataSource {
         allDayReminderTimeMinutes: Int,
     )
 
+    /**
+     * Move an event (for recurring events: the whole series, with its modified
+     * and cancelled occurrences) to [targetCalendarId], returning the new
+     * `Events._ID`. `CALENDAR_ID` is sync-adapter-owned and can't be updated in
+     * place, so this is copy+delete: the row is re-inserted on the target (its
+     * `UID_2445` preserved), its exceptions, reminders and editable guests
+     * replayed, the [original]→[updated] field edits applied, then the source
+     * deleted. The source is removed only once the copy fully succeeds; a failure
+     * before that rolls the new event back, leaving the original untouched.
+     * [allDayReminderTimeMinutes]: see [insertEvent].
+     */
+    fun moveEvent(
+        eventId: Long,
+        targetCalendarId: Long,
+        original: EventForm,
+        updated: EventForm,
+        allDayReminderTimeMinutes: Int,
+    ): Long
+
     /**
      * Change a single occurrence of a recurring event by inserting a
      * modified-occurrence exception at [beginMillis] (the occurrence's
@@ -495,13 +513,7 @@ class AndroidCalendarDataSource @Inject constructor(
         return resolver.query(
             uri,
             InstanceProjection.COLUMNS,
-            // Hide cancelled occurrences: "delete only this event" writes a
+            null, null,
-            // cancelled exception for the one instance (#47). A NULL status is a
-            // normal, un-cancelled event, so it must survive the filter — a bare
-            // `!= CANCELED` would drop it (NULL != 2 is NULL, not true).
-            "${CalendarContract.Instances.STATUS} IS NULL OR " +
-                "${CalendarContract.Instances.STATUS} != ${CalendarContract.Events.STATUS_CANCELED}",
-            null,
             CalendarContract.Instances.BEGIN + " ASC",
         )?.use { c -> c.mapAllNotNull { CursorColumnReader(c).toEventInstance() } } ?: emptyList()
     }
@@ -620,7 +632,7 @@ class AndroidCalendarDataSource @Inject constructor(
             c.mapAll { EventColorOption(key = it.getString(0).orEmpty(), argb = it.getInt(1)) }
         }
             ?.filter { it.key.isNotEmpty() }
-            ?.curatedForPicker()
+            ?.sortedBy { it.key }
             ?: emptyList()
     }
 
@@ -885,6 +897,190 @@ class AndroidCalendarDataSource @Inject constructor(
         }
     }
 
+    override fun moveEvent(
+        eventId: Long,
+        targetCalendarId: Long,
+        original: EventForm,
+        updated: EventForm,
+        allDayReminderTimeMinutes: Int,
+    ): Long {
+        // CALENDAR_ID can't be updated in place, so re-create the event on the
+        // target calendar and delete the source. Everything that identifies or
+        // hangs off the event is copied first; the source row is removed only
+        // once the copy (including its exceptions) is complete — a failure
+        // anywhere before that rolls the new event back, so the move is
+        // all-or-nothing and never leaves a half-copied duplicate.
+        val master = queryMoveMaster(eventId)
+            ?: throw WriteFailedException("read event to move id=$eventId")
+        // Keep the source UID so an .ics backup dedups and a sync adapter can
+        // recognise the moved event; mint one only if the source carried none.
+        val uid = master.uid?.takeIf { it.isNotEmpty() } ?: "${UUID.randomUUID()}@calendula"
+        val newEventId = resolver.insert(
+            CalendarContract.Events.CONTENT_URI,
+            buildMovedMasterValues(master.event, targetCalendarId, uid).toContentValues(),
+        )?.let(ContentUris::parseId)
+            ?: throw WriteFailedException("insert moved event into calendar id=$targetCalendarId")
+        try {
+            copyReminderRows(fromEventId = eventId, toEventId = newEventId)
+            insertAttendees(newEventId, editableAttendees(eventId))
+            copyExceptions(fromEventId = eventId, toEventId = newEventId)
+            // Apply the user's field edits exactly as a same-calendar "all
+            // events" save would: the moved master carries the source's values,
+            // so the dirty diff against [original] writes only what changed
+            // (including a time or rrule edit made in the same save).
+            updateEvent(newEventId, original, updated, allDayReminderTimeMinutes)
+        } catch (t: Throwable) {
+            // Undo the partial copy so a failed move leaves nothing behind; the
+            // source is still intact (it's deleted only past this point).
+            runCatching { deleteEvent(newEventId) }
+            throw t
+        }
+        deleteEvent(eventId)
+        return newEventId
+    }
+
+    /** The master row of the event to move, as a verbatim-insert snapshot. */
+    private fun queryMoveMaster(eventId: Long): MoveMaster? = resolver.query(
+        ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventId),
+        MoveMasterProjection.COLUMNS,
+        null, null, null,
+    )?.use { c ->
+        if (!c.moveToFirst()) return@use null
+        val r = CursorColumnReader(c)
+        MoveMaster(
+            uid = r.getString(MoveMasterProjection.IDX_UID),
+            event = MasterEventSnapshot(
+                title = r.getString(MoveMasterProjection.IDX_TITLE).orEmpty(),
+                isAllDay = r.getInt(MoveMasterProjection.IDX_ALL_DAY) != 0,
+                dtStartMillis = r.getLong(MoveMasterProjection.IDX_DTSTART),
+                dtEndMillis = r.getLong(MoveMasterProjection.IDX_DTEND)
+                    .takeUnless { r.isNull(MoveMasterProjection.IDX_DTEND) },
+                duration = r.getString(MoveMasterProjection.IDX_DURATION),
+                rrule = r.getString(MoveMasterProjection.IDX_RRULE)?.takeIf { it.isNotBlank() },
+                rdate = r.getString(MoveMasterProjection.IDX_RDATE),
+                exdate = r.getString(MoveMasterProjection.IDX_EXDATE),
+                timezone = r.getString(MoveMasterProjection.IDX_EVENT_TIMEZONE),
+                availability = r.getInt(MoveMasterProjection.IDX_AVAILABILITY),
+                accessLevel = r.getInt(MoveMasterProjection.IDX_ACCESS_LEVEL),
+                status = r.getInt(MoveMasterProjection.IDX_STATUS)
+                    .takeUnless { r.isNull(MoveMasterProjection.IDX_STATUS) },
+                location = r.getString(MoveMasterProjection.IDX_LOCATION),
+                description = r.getString(MoveMasterProjection.IDX_DESCRIPTION),
+            ),
+        )
+    }
+
+    private data class MoveMaster(val uid: String?, val event: MasterEventSnapshot)
+
+    /** Copy every stored reminder row (raw offsets and method) onto [toEventId]. */
+    private fun copyReminderRows(fromEventId: Long, toEventId: Long) = resolver.query(
+        CalendarContract.Reminders.CONTENT_URI,
+        arrayOf(CalendarContract.Reminders.MINUTES, CalendarContract.Reminders.METHOD),
+        CalendarContract.Reminders.EVENT_ID + " = ?",
+        arrayOf(fromEventId.toString()),
+        null,
+    )?.use { c ->
+        while (c.moveToNext()) {
+            val values = ContentValues().apply {
+                put(CalendarContract.Reminders.EVENT_ID, toEventId)
+                put(CalendarContract.Reminders.MINUTES, c.getInt(0))
+                put(CalendarContract.Reminders.METHOD, c.getInt(1))
+            }
+            if (resolver.insert(CalendarContract.Reminders.CONTENT_URI, values) == null) {
+                Log.w(TAG, "Failed to copy a reminder to moved event $toEventId")
+            }
+        }
+    } ?: Unit
+
+    /**
+     * The event's editable guests as [EventAttendee]s — the rows the move
+     * re-creates. Mirrors the edit form's filter: the organizer and resource
+     * rows (backend-owned, not user-editable) and any without an email are
+     * dropped; the response status resets to "invited" on re-insert.
+     */
+    private fun editableAttendees(eventId: Long): List<EventAttendee> = queryAttendees(eventId)
+        .filter {
+            it.relationship != AttendeeRelationship.Organizer && it.type != AttendeeType.Resource
+        }
+        .mapNotNull { a ->
+            a.email?.takeIf { it.isNotBlank() }?.let { email ->
+                EventAttendee(email = email, name = a.name, optional = a.type == AttendeeType.Optional)
+            }
+        }
+
+    /**
+     * Replay every exception of the series [fromEventId] against the moved series
+     * [toEventId]. The copy preserved the recurrence skeleton, so each occurrence
+     * time still resolves: a cancelled occurrence is re-hidden with a cancelled
+     * exception, a modified one is re-inserted with its fields (then its reminders
+     * reconciled and editable guests copied). No-op for a non-recurring event.
+     */
+    private fun copyExceptions(fromEventId: Long, toEventId: Long) {
+        queryExceptionRows(fromEventId).forEach { ex ->
+            if (ex.isCancelled) {
+                val values = ContentValues().apply {
+                    put(CalendarContract.Events.ORIGINAL_INSTANCE_TIME, ex.originalInstanceMillis)
+                    put(CalendarContract.Events.STATUS, CalendarContract.Events.STATUS_CANCELED)
+                }
+                resolver.insert(
+                    ContentUris.withAppendedId(
+                        CalendarContract.Events.CONTENT_EXCEPTION_URI, toEventId,
+                    ),
+                    values,
+                ) ?: throw WriteFailedException("copy cancelled occurrence to event id=$toEventId")
+            } else {
+                val uri = resolver.insert(
+                    ContentUris.withAppendedId(
+                        CalendarContract.Events.CONTENT_EXCEPTION_URI, toEventId,
+                    ),
+                    buildCopiedExceptionValues(ex).toContentValues(),
+                ) ?: throw WriteFailedException("copy modified occurrence to event id=$toEventId")
+                val newExceptionId = ContentUris.parseId(uri)
+                // The provider may clone the parent's reminders onto the new
+                // exception; reconcile to the source exception's exact set so
+                // they neither double nor drop. Same DTSTART → same all-day
+                // encoding, so the stored offsets match directly.
+                reconcileReminders(
+                    newExceptionId,
+                    queryReminders(ex.exceptionEventId).map { it.minutes },
+                )
+                insertAttendees(newExceptionId, editableAttendees(ex.exceptionEventId))
+            }
+        }
+    }
+
+    /** The series' exception rows (modified + cancelled), oldest occurrence first. */
+    private fun queryExceptionRows(seriesEventId: Long): List<ExceptionRowSnapshot> = resolver.query(
+        CalendarContract.Events.CONTENT_URI,
+        ExceptionProjection.COLUMNS,
+        "${CalendarContract.Events.ORIGINAL_ID} = ? AND ${CalendarContract.Events.DELETED} = 0",
+        arrayOf(seriesEventId.toString()),
+        CalendarContract.Events.ORIGINAL_INSTANCE_TIME + " ASC",
+    )?.use { c ->
+        c.mapAll {
+            val r = CursorColumnReader(c)
+            val status = r.getInt(ExceptionProjection.IDX_STATUS)
+                .takeUnless { r.isNull(ExceptionProjection.IDX_STATUS) }
+            ExceptionRowSnapshot(
+                exceptionEventId = r.getLong(ExceptionProjection.IDX_ID),
+                originalInstanceMillis = r.getLong(ExceptionProjection.IDX_ORIGINAL_INSTANCE_TIME),
+                isCancelled = status == CalendarContract.Events.STATUS_CANCELED,
+                status = status,
+                title = r.getString(ExceptionProjection.IDX_TITLE).orEmpty(),
+                isAllDay = r.getInt(ExceptionProjection.IDX_ALL_DAY) != 0,
+                dtStartMillis = r.getLong(ExceptionProjection.IDX_DTSTART),
+                dtEndMillis = r.getLong(ExceptionProjection.IDX_DTEND)
+                    .takeUnless { r.isNull(ExceptionProjection.IDX_DTEND) },
+                duration = r.getString(ExceptionProjection.IDX_DURATION),
+                timezone = r.getString(ExceptionProjection.IDX_EVENT_TIMEZONE),
+                availability = r.getInt(ExceptionProjection.IDX_AVAILABILITY),
+                accessLevel = r.getInt(ExceptionProjection.IDX_ACCESS_LEVEL),
+                location = r.getString(ExceptionProjection.IDX_LOCATION),
+                description = r.getString(ExceptionProjection.IDX_DESCRIPTION),
+            )
+        }
+    } ?: emptyList()
+
     override fun updateOccurrence(
         eventId: Long,
         beginMillis: Long,
@@ -979,8 +1175,6 @@ class AndroidCalendarDataSource @Inject constructor(
             CalendarContract.Events.EVENT_TIMEZONE,
             CalendarContract.Events.DURATION,
             CalendarContract.Events.ALL_DAY,
-            CalendarContract.Events._SYNC_ID,
-            CalendarContract.Events.EXDATE,
         ),
         null, null, null,
     )?.use { c ->
@@ -991,8 +1185,6 @@ class AndroidCalendarDataSource @Inject constructor(
                 timezone = c.getString(2),
                 duration = c.getString(3),
                 allDay = c.getInt(4),
-                syncId = c.getString(5),
-                exdate = c.getString(6),
             )
         } else {
             null
@@ -1005,9 +1197,6 @@ class AndroidCalendarDataSource @Inject constructor(
         val timezone: String?,
         val duration: String?,
         val allDay: Int,
-        /** Null on a local calendar (and before a synced event's first push). */
-        val syncId: String? = null,
-        val exdate: String? = null,
     ) {
         /** UNTIL cutoff for ending the series before the occurrence at [beginMillis]. */
         fun truncationCutoff(beginMillis: Long): Long = previousLocalDayEndUtcMillis(
@@ -1198,49 +1387,16 @@ class AndroidCalendarDataSource @Inject constructor(
     }
 
     override fun deleteOccurrence(eventId: Long, beginMillis: Long) {
-        val row = querySeriesRow(eventId)
-        if (row.syncId == null) {
-            // No _sync_id — a local calendar, or a synced event not pushed yet.
-            // A cancelled exception can only attach to its parent through
-            // ORIGINAL_SYNC_ID, so with none the link never forms and the
-            // provider's expansion of the *parent* collapses, taking every other
-            // occurrence with it (#47 on a local calendar). EXDATE needs no link.
-            // Calendula's own contact special-date calendars are local and hold
-            // yearly series, so this path is reached in normal use.
-            val values = buildOccurrenceExdateValues(
-                existingExdate = row.exdate,
-                occurrenceMillis = beginMillis,
-                dtStartMillis = row.dtStartMillis,
-                rrule = row.rrule,
-                duration = row.duration,
-                timezone = row.timezone,
-                allDay = row.allDay,
-            )
-            val updated = resolver.update(
-                ContentUris.withAppendedId(CalendarContract.Events.CONTENT_URI, eventId),
-                values.toContentValues(), null, null,
-            )
-            if (updated == 0) {
-                throw WriteFailedException("exdate occurrence event id=$eventId begin=$beginMillis")
-            }
-            return
-        }
         // A cancelled exception row hides exactly this occurrence; the sync
-        // adapter turns it into an EXDATE/cancelled VEVENT upstream. It carries
+        // adapter turns it into an EXDATE/cancelled VEVENT upstream.
-        // the full time set (DTSTART + DURATION + zone) so the provider derives a
+        val values = ContentValues().apply {
-        // single instance rather than cloning the master's RRULE — the same trap
+            put(CalendarContract.Events.ORIGINAL_INSTANCE_TIME, beginMillis)
-        // the edit path documents (Codeberg #16).
+            put(CalendarContract.Events.STATUS, CalendarContract.Events.STATUS_CANCELED)
-        val values = buildOccurrenceCancelValues(
+        }
-            originalInstanceMillis = beginMillis,
-            dtStartMillis = beginMillis,
-            duration = row.duration,
-            timezone = row.timezone,
-            allDay = row.allDay,
-        )
         val uri = ContentUris.withAppendedId(
             CalendarContract.Events.CONTENT_EXCEPTION_URI, eventId,
         )
-        resolver.insert(uri, values.toContentValues())
+        resolver.insert(uri, values)
             ?: throw WriteFailedException("cancel occurrence event id=$eventId begin=$beginMillis")
     }
 

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarRepository.kt

@@ -61,6 +61,20 @@ interface CalendarRepository {
      */
     suspend fun updateEvent(eventId: Long, original: EventForm, updated: EventForm)
 
+    /**
+     * Move an event (recurring: the whole series, with its exceptions) to
+     * [targetCalendarId] and apply the [original]→[updated] field edits; returns
+     * the new event's `Events._ID`. Copy+delete under the hood
+     * (see [CalendarDataSource.moveEvent]) — `CALENDAR_ID` can't be updated in
+     * place.
+     */
+    suspend fun moveEvent(
+        eventId: Long,
+        targetCalendarId: Long,
+        original: EventForm,
+        updated: EventForm,
+    ): Long
+
     /**
      * Change a single occurrence of a recurring event (exception row with the
      * form's values); returns the exception's `Events._ID`.

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/CalendarRepositoryImpl.kt

@@ -157,6 +157,17 @@ class CalendarRepositoryImpl @Inject constructor(
         dataSource.deleteEvent(eventId)
     }
 
+    override suspend fun moveEvent(
+        eventId: Long,
+        targetCalendarId: Long,
+        original: EventForm,
+        updated: EventForm,
+    ): Long = withContext(io) {
+        dataSource.moveEvent(
+            eventId, targetCalendarId, original, updated, allDayReminderTimeMinutes(),
+        )
+    }
+
     override suspend fun updateOccurrence(
         eventId: Long,
         beginMillis: Long,

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/EventDetailMapper.kt

@@ -14,7 +14,6 @@ import de.jeanlucmakiola.calendula.domain.EventInstance
 import de.jeanlucmakiola.calendula.domain.EventStatus
 import de.jeanlucmakiola.calendula.domain.Reminder
 import de.jeanlucmakiola.calendula.domain.ReminderMethod
-import de.jeanlucmakiola.calendula.domain.ics.parseRfc2445DurationMillis
 import java.time.Instant
 import java.time.ZoneId
 import java.time.ZoneOffset
@@ -37,18 +36,15 @@ internal fun ColumnReader.toEventDetailCore(
     val begin = getLong(EventDetailProjection.IDX_DTSTART)
 
     // Recurring events store DURATION instead of DTEND, so the series row's
-    // DTEND is null — derive the length from DURATION (as SearchMapper and
+    // DTEND is null. Keep the event (end == begin); callers that opened a
-    // IcsExportMapper do). Callers that opened a specific occurrence overwrite
+    // specific occurrence supply the real per-occurrence times from
-    // both times with the per-occurrence values from CalendarContract.Instances;
+    // CalendarContract.Instances. A present-but-backwards DTEND is malformed,
-    // a caller that names no occurrence (a bare content://.../events/<id> VIEW
+    // but dropping the row would make the event un-openable — the same trap as
-    // intent, issue #48) keeps this row's own times, so the length has to be
+    // the pre-1970 DTSTART bug above (issue #34): it would surface as the
-    // right here or the series renders zero-length. A present-but-backwards
+    // generic error screen with no way to open the event and fix it. Clamp to a
-    // DTEND is malformed, but dropping the row would make the event un-openable
+    // zero-length event instead (matching SearchMapper's coerceAtLeast).
-    // — the same trap as the pre-1970 DTSTART bug above (issue #34): it would
-    // surface as the generic error screen with no way to open the event and fix
-    // it. Clamp to a zero-length event instead (matching SearchMapper).
     val end = if (isNull(EventDetailProjection.IDX_DTEND)) {
-        begin + parseRfc2445DurationMillis(getString(EventDetailProjection.IDX_DURATION))
+        begin
     } else {
         getLong(EventDetailProjection.IDX_DTEND).coerceAtLeast(begin)
     }

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/EventWriteMapper.kt

@@ -43,10 +43,19 @@ internal fun EventForm.toWriteTimes(zone: ZoneId): EventWriteTimes = if (isAllDa
  * DURATION instead of DTEND when an RRULE is set): whole days for all-day
  * events, seconds otherwise.
  */
-internal fun EventWriteTimes.toRfc2445Duration(isAllDay: Boolean): String = if (isAllDay) {
+internal fun EventWriteTimes.toRfc2445Duration(isAllDay: Boolean): String =
-    "P${(dtEndMillis - dtStartMillis) / MILLIS_PER_DAY}D"
+    rfc2445Duration(dtEndMillis - dtStartMillis, isAllDay)
+
+/**
+ * RFC 2445 duration for a [spanMillis]-long event: whole days for all-day
+ * events (the provider's convention), seconds otherwise. Shared by the write
+ * paths that need a DURATION but start from a raw millisecond span (the series
+ * copy and exception replay of a calendar move) rather than [EventWriteTimes].
+ */
+internal fun rfc2445Duration(spanMillis: Long, isAllDay: Boolean): String = if (isAllDay) {
+    "P${spanMillis / MILLIS_PER_DAY}D"
 } else {
-    "P${(dtEndMillis - dtStartMillis) / 1_000L}S"
+    "P${spanMillis / 1_000L}S"
 }
 
 /**
@@ -183,99 +192,120 @@ internal fun buildOccurrenceExceptionValues(
 }
 
 /**
- * Column values for a *cancelled*-occurrence exception row ("delete only this
+ * Raw provider snapshot of a master/one-off Events row, enough to re-insert it
- * event"): inserting them at `Events.CONTENT_EXCEPTION_URI/<id>` makes the
+ * verbatim on another calendar (a calendar move is copy+delete — `CALENDAR_ID`
- * provider clone the series row and cancel exactly this one instance.
+ * is sync-adapter-owned and can't be updated in place). Recurring rows carry
- *
+ * [rrule]/[duration] (and any [rdate]/[exdate]) with a null [dtEndMillis];
- * As with [buildOccurrenceExceptionValues], the occurrence must be anchored with
+ * one-off rows carry [dtEndMillis]. Colour is deliberately absent: a raw
- * DTSTART + DURATION so the provider derives a single instance and clears the
+ * `EVENT_COLOR` or account-scoped `EVENT_COLOR_KEY` may be invalid on the target
- * inherited RRULE. A STATUS-only cancel skips that: the clone keeps the RRULE, so
+ * account, so the moved copy inherits the target calendar's colour instead.
- * the *whole series* is cancelled and every other occurrence disappears
- * (Codeberg #47). The occurrence's length/zone come straight from the series row
- * — cancelling never changes them.
  */
-internal fun buildOccurrenceCancelValues(
+internal data class MasterEventSnapshot(
-    originalInstanceMillis: Long,
+    val title: String,
-    dtStartMillis: Long,
+    val isAllDay: Boolean,
-    duration: String?,
+    val dtStartMillis: Long,
-    timezone: String?,
+    val dtEndMillis: Long?,
-    allDay: Int,
+    val duration: String?,
+    val rrule: String?,
+    val rdate: String?,
+    val exdate: String?,
+    val timezone: String?,
+    val availability: Int,
+    val accessLevel: Int,
+    val status: Int?,
+    val location: String?,
+    val description: String?,
+)
+
+/**
+ * Column values re-creating [snapshot] as a fresh Events row on
+ * [targetCalendarId], keeping its [uid] so `.ics` backup dedup and sync identity
+ * survive the move. Preserves the recurrence skeleton (DTSTART/RRULE/DURATION,
+ * RDATE/EXDATE) so the series' generated instances — and therefore the
+ * ORIGINAL_INSTANCE_TIME of every copied exception — line up unchanged. The
+ * caller layers the user's field edits on top with a normal series update.
+ */
+internal fun buildMovedMasterValues(
+    snapshot: MasterEventSnapshot,
+    targetCalendarId: Long,
+    uid: String,
 ): Map<String, Any?> = buildMap {
-    put(CalendarContract.Events.ORIGINAL_INSTANCE_TIME, originalInstanceMillis)
+    put(CalendarContract.Events.CALENDAR_ID, targetCalendarId)
-    put(CalendarContract.Events.DTSTART, dtStartMillis)
+    put(CalendarContract.Events.UID_2445, uid)
-    put(CalendarContract.Events.DURATION, duration)
+    put(CalendarContract.Events.TITLE, snapshot.title)
-    put(CalendarContract.Events.EVENT_TIMEZONE, timezone)
+    put(CalendarContract.Events.ALL_DAY, if (snapshot.isAllDay) 1 else 0)
-    put(CalendarContract.Events.ALL_DAY, allDay)
+    put(CalendarContract.Events.DTSTART, snapshot.dtStartMillis)
-    put(CalendarContract.Events.STATUS, CalendarContract.Events.STATUS_CANCELED)
+    put(CalendarContract.Events.EVENT_TIMEZONE, snapshot.timezone ?: "UTC")
-}
+    if (snapshot.rrule != null) {
-
+        put(CalendarContract.Events.RRULE, snapshot.rrule)
-/**
+        snapshot.rdate?.takeIf { it.isNotBlank() }?.let { put(CalendarContract.Events.RDATE, it) }
- * The master-row columns that drop the occurrence at [occurrenceMillis] from a
+        snapshot.exdate?.takeIf { it.isNotBlank() }?.let { put(CalendarContract.Events.EXDATE, it) }
- * series by adding it to `EXDATE` — the path for events that have **no
+        put(CalendarContract.Events.DURATION, snapshot.movedDuration())
- * `_sync_id`** (a local calendar, or a synced event not yet pushed).
- *
- * A cancelled exception row (see [buildOccurrenceCancelValues]) only attaches to
- * its parent through `ORIGINAL_SYNC_ID`. Without a `_sync_id` the link never
- * forms, and the provider's expansion of the *parent* collapses — every other
- * occurrence disappears (Codeberg #47, reproduced on a local calendar). EXDATE
- * needs no link, and is the canonical iCalendar way to drop an occurrence, so a
- * sync adapter carries it upstream unchanged if the calendar later syncs.
- *
- * The whole time/recurrence set is rewritten alongside it on purpose. The
- * provider does **not** treat an EXDATE-only update as a recurrence change: it
- * leaves the expanded `Instances` rows untouched, so the occurrence stays visible
- * (and, symmetrically, un-excluding one leaves it hidden). Writing DTSTART with
- * it forces the re-expansion — but DTSTART *alone* makes the provider recompute
- * `lastDate` as if the event were a single instance, collapsing the series to its
- * first occurrence. Passing DTSTART + DURATION + RRULE + zone together is what
- * re-expands it correctly. All observed on a Pixel; see the #47 notes.
- *
- * EXDATE is a comma-separated list, so an existing one is appended to (a repeat
- * of the same occurrence is folded away). All-day series take the `VALUE=DATE`
- * form (`yyyyMMdd`), timed ones the UTC date-time form (`yyyyMMddTHHmmssZ`).
- */
-internal fun buildOccurrenceExdateValues(
-    existingExdate: String?,
-    occurrenceMillis: Long,
-    dtStartMillis: Long,
-    rrule: String?,
-    duration: String?,
-    timezone: String?,
-    allDay: Int,
-): Map<String, Any?> {
-    val stamp = formatExdateStamp(occurrenceMillis, isAllDay = allDay != 0)
-    val existing = existingExdate?.split(',')
-        ?.map { it.trim() }
-        ?.filter { it.isNotEmpty() }
-        .orEmpty()
-    val merged = (existing + stamp).distinct().joinToString(",")
-    return mapOf(
-        CalendarContract.Events.EXDATE to merged,
-        CalendarContract.Events.DTSTART to dtStartMillis,
-        CalendarContract.Events.RRULE to rrule,
-        CalendarContract.Events.DURATION to duration,
-        CalendarContract.Events.EVENT_TIMEZONE to timezone,
-        CalendarContract.Events.ALL_DAY to allDay,
-    )
-}
-
-/**
- * One EXDATE entry for the occurrence starting at [occurrenceMillis]. Both forms
- * are UTC: the provider stores an all-day DTSTART at UTC midnight, so its date
- * reads off the UTC calendar day.
- */
-private fun formatExdateStamp(occurrenceMillis: Long, isAllDay: Boolean): String {
-    val utc = Instant.ofEpochMilli(occurrenceMillis).atZone(ZoneOffset.UTC)
-    return if (isAllDay) {
-        "%04d%02d%02d".format(utc.year, utc.monthValue, utc.dayOfMonth)
     } else {
-        "%04d%02d%02dT%02d%02d%02dZ".format(
+        snapshot.dtEndMillis?.let { put(CalendarContract.Events.DTEND, it) }
-            utc.year, utc.monthValue, utc.dayOfMonth,
-            utc.hour, utc.minute, utc.second,
-        )
     }
+    put(CalendarContract.Events.AVAILABILITY, snapshot.availability)
+    put(CalendarContract.Events.ACCESS_LEVEL, snapshot.accessLevel)
+    snapshot.status?.let { put(CalendarContract.Events.STATUS, it) }
+    put(CalendarContract.Events.EVENT_LOCATION, snapshot.location?.ifEmpty { null })
+    put(CalendarContract.Events.DESCRIPTION, snapshot.description?.ifEmpty { null })
 }
 
+/** The recurring copy's DURATION: its own if present, else derived from DTEND. */
+private fun MasterEventSnapshot.movedDuration(): String = duration?.takeIf { it.isNotBlank() }
+    ?: rfc2445Duration((dtEndMillis ?: dtStartMillis) - dtStartMillis, isAllDay)
+
+/**
+ * Raw provider snapshot of one exception row of a recurring series (a modified
+ * or cancelled occurrence, `ORIGINAL_ID` = the series). [originalInstanceMillis]
+ * ties it to the occurrence it overrides; a [isCancelled] row only needs that.
+ */
+internal data class ExceptionRowSnapshot(
+    val exceptionEventId: Long,
+    val originalInstanceMillis: Long,
+    val isCancelled: Boolean,
+    val status: Int?,
+    val title: String,
+    val isAllDay: Boolean,
+    val dtStartMillis: Long,
+    val dtEndMillis: Long?,
+    val duration: String?,
+    val timezone: String?,
+    val availability: Int,
+    val accessLevel: Int,
+    val location: String?,
+    val description: String?,
+)
+
+/**
+ * Column values replaying a *modified* occurrence [snapshot] against the moved
+ * series via `CONTENT_EXCEPTION_URI`. Like [buildOccurrenceExceptionValues] the
+ * length travels as DURATION (the provider rejects DTEND on an exception). A
+ * cancelled occurrence is written separately (ORIGINAL_INSTANCE_TIME +
+ * STATUS_CANCELED) — this builder is only for the modified case.
+ */
+internal fun buildCopiedExceptionValues(snapshot: ExceptionRowSnapshot): Map<String, Any?> =
+    buildMap {
+        put(CalendarContract.Events.ORIGINAL_INSTANCE_TIME, snapshot.originalInstanceMillis)
+        put(CalendarContract.Events.TITLE, snapshot.title)
+        put(CalendarContract.Events.ALL_DAY, if (snapshot.isAllDay) 1 else 0)
+        put(CalendarContract.Events.DTSTART, snapshot.dtStartMillis)
+        put(
+            CalendarContract.Events.DURATION,
+            snapshot.duration?.takeIf { it.isNotBlank() }
+                ?: rfc2445Duration(
+                    (snapshot.dtEndMillis ?: snapshot.dtStartMillis) - snapshot.dtStartMillis,
+                    snapshot.isAllDay,
+                ),
+        )
+        put(CalendarContract.Events.EVENT_TIMEZONE, snapshot.timezone ?: "UTC")
+        put(CalendarContract.Events.AVAILABILITY, snapshot.availability)
+        put(CalendarContract.Events.ACCESS_LEVEL, snapshot.accessLevel)
+        put(CalendarContract.Events.EVENT_LOCATION, snapshot.location?.ifEmpty { null })
+        put(CalendarContract.Events.DESCRIPTION, snapshot.description?.ifEmpty { null })
+        snapshot.status?.let { put(CalendarContract.Events.STATUS, it) }
+    }
+
 /**
  * The `EVENT_COLOR` / `EVENT_COLOR_KEY` columns for a colour selection. A
  * [colorKey] writes the key alone (the provider derives `EVENT_COLOR` from the

app/src/main/java/de/jeanlucmakiola/calendula/data/calendar/Projections.kt

@@ -84,9 +84,6 @@ internal object EventDetailProjection {
         CalendarContract.Events.EVENT_TIMEZONE,
         CalendarContract.Events.SELF_ATTENDEE_STATUS,
         CalendarContract.Events.EVENT_COLOR_KEY,
-        // Recurring rows carry DURATION instead of DTEND; the detail screen
-        // needs it to render a series opened without a named occurrence.
-        CalendarContract.Events.DURATION,
     )
 
     const val IDX_EVENT_ID = 0
@@ -107,7 +104,6 @@ internal object EventDetailProjection {
     const val IDX_EVENT_TIMEZONE = 15
     const val IDX_SELF_ATTENDEE_STATUS = 16
     const val IDX_EVENT_COLOR_KEY = 17
-    const val IDX_DURATION = 18
 }
 
 /**
@@ -190,6 +186,86 @@ internal object SearchProjection {
     const val IDX_RDATE = 11
 }
 
+/**
+ * The master/one-off Events row of an event about to be moved to another
+ * calendar, read for a verbatim re-insert (see [MasterEventSnapshot]). Carries
+ * the full recurrence skeleton (RRULE/DURATION, RDATE/EXDATE) so the moved copy
+ * generates the same instances, and `UID_2445` so identity survives the move.
+ */
+internal object MoveMasterProjection {
+    val COLUMNS: Array<String> = arrayOf(
+        CalendarContract.Events.UID_2445,
+        CalendarContract.Events.TITLE,
+        CalendarContract.Events.DTSTART,
+        CalendarContract.Events.DTEND,
+        CalendarContract.Events.DURATION,
+        CalendarContract.Events.RRULE,
+        CalendarContract.Events.RDATE,
+        CalendarContract.Events.EXDATE,
+        CalendarContract.Events.EVENT_TIMEZONE,
+        CalendarContract.Events.ALL_DAY,
+        CalendarContract.Events.AVAILABILITY,
+        CalendarContract.Events.ACCESS_LEVEL,
+        CalendarContract.Events.STATUS,
+        CalendarContract.Events.EVENT_LOCATION,
+        CalendarContract.Events.DESCRIPTION,
+    )
+
+    const val IDX_UID = 0
+    const val IDX_TITLE = 1
+    const val IDX_DTSTART = 2
+    const val IDX_DTEND = 3
+    const val IDX_DURATION = 4
+    const val IDX_RRULE = 5
+    const val IDX_RDATE = 6
+    const val IDX_EXDATE = 7
+    const val IDX_EVENT_TIMEZONE = 8
+    const val IDX_ALL_DAY = 9
+    const val IDX_AVAILABILITY = 10
+    const val IDX_ACCESS_LEVEL = 11
+    const val IDX_STATUS = 12
+    const val IDX_LOCATION = 13
+    const val IDX_DESCRIPTION = 14
+}
+
+/**
+ * The exception rows of a recurring series (`ORIGINAL_ID` = the series), read to
+ * replay them against a moved copy (see [ExceptionRowSnapshot]). Both modified
+ * occurrences and cancellations (`STATUS_CANCELED`) are read; the query filters
+ * `DELETED = 0` so provider tombstones aren't replayed.
+ */
+internal object ExceptionProjection {
+    val COLUMNS: Array<String> = arrayOf(
+        CalendarContract.Events._ID,
+        CalendarContract.Events.ORIGINAL_INSTANCE_TIME,
+        CalendarContract.Events.STATUS,
+        CalendarContract.Events.TITLE,
+        CalendarContract.Events.ALL_DAY,
+        CalendarContract.Events.DTSTART,
+        CalendarContract.Events.DTEND,
+        CalendarContract.Events.DURATION,
+        CalendarContract.Events.EVENT_TIMEZONE,
+        CalendarContract.Events.AVAILABILITY,
+        CalendarContract.Events.ACCESS_LEVEL,
+        CalendarContract.Events.EVENT_LOCATION,
+        CalendarContract.Events.DESCRIPTION,
+    )
+
+    const val IDX_ID = 0
+    const val IDX_ORIGINAL_INSTANCE_TIME = 1
+    const val IDX_STATUS = 2
+    const val IDX_TITLE = 3
+    const val IDX_ALL_DAY = 4
+    const val IDX_DTSTART = 5
+    const val IDX_DTEND = 6
+    const val IDX_DURATION = 7
+    const val IDX_EVENT_TIMEZONE = 8
+    const val IDX_AVAILABILITY = 9
+    const val IDX_ACCESS_LEVEL = 10
+    const val IDX_LOCATION = 11
+    const val IDX_DESCRIPTION = 12
+}
+
 internal object AttendeeProjection {
     val COLUMNS: Array<String> = arrayOf(
         CalendarContract.Attendees.ATTENDEE_NAME,

app/src/main/java/de/jeanlucmakiola/calendula/domain/EventColorPalette.kt

@@ -1,185 +0,0 @@
-package de.jeanlucmakiola.calendula.domain
-
-import kotlin.math.abs
-import kotlin.math.atan2
-import kotlin.math.cbrt
-import kotlin.math.hypot
-import kotlin.math.pow
-import kotlin.math.roundToInt
-import kotlin.math.sqrt
-
-/**
- * Curates an account's published event palette for the colour picker.
- *
- * Sync adapters differ wildly in what they publish: Google exposes a
- * hand-picked two-dozen set, while CalDAV adapters (DAVx5) dump all ~147 CSS3
- * named colours — including exact-value aliases (aqua/cyan, the gray/grey
- * spelling pairs) and dozens of visually indistinguishable whites and grays
- * (#22).
- *
- * Crucially, curation runs against the colour the picker actually *paints*, not
- * the raw provider value. The picker softens every swatch through [pastelArgb]:
- * it pins lightness to a constant and caps saturation, so the raw palette's
- * lightness axis is invisible on screen. Two raw colours that look different —
- * a navy and a mid blue — paint as one swatch, and every neutral (black, the
- * grays, white) paints as the same pale tint. Judging distinctness in raw
- * space, as before, left near-identical painted swatches and stranded the
- * neutrals as a run of look-alike "pinks" at the end of the grid.
- *
- * Three steps, all in painted space:
- *  1. Collapse swatches that paint identically to one (alphabetically-first key
- *     wins, deterministically) — this folds aliases, dark/light shades of a
- *     hue, and all the neutrals together.
- *  2. Oversized palettes (> [CURATION_TRIGGER_SIZE]) drop the washed-out
- *     neutral-origin tints (painted chroma < [PASTEL_CHROMA_FLOOR]) and are
- *     then thinned to visually distinct colours: most vivid first, a colour is
- *     kept only when at least [MIN_DELTA_E] (CIE76, painted Lab) from every
- *     colour already kept. Small palettes are already curated by their adapter
- *     and pass through whole.
- *  3. The survivors are ordered like a rainbow — continuously by painted hue —
- *     with the wheel cut at its single widest empty gap so the one unavoidable
- *     seam lands in dead space and no hue family is torn across both ends.
- *
- * Every surviving option keeps its provider [EventColorOption.key], so a pick
- * still round-trips through sync.
- */
-fun List<EventColorOption>.curatedForPicker(): List<EventColorOption> {
-    val painted = sortedBy { it.key }
-        .distinctBy { pastelArgb(it.argb) }
-        .map { it to Lab.of(pastelArgb(it.argb)) }
-    val kept = if (painted.size <= CURATION_TRIGGER_SIZE) {
-        painted
-    } else {
-        thin(painted.filter { (_, lab) -> lab.chroma >= PASTEL_CHROMA_FLOOR })
-    }
-    return orderAroundWheel(kept).map { (option, _) -> option }
-}
-
-/**
- * Orders swatches continuously around the (painted) hue wheel, then cuts the
- * circle at its widest angular gap so the single seam lands in empty space
- * instead of mid-family. Saturation breaks ties, vivid first.
- */
-private fun orderAroundWheel(
-    swatches: List<Pair<EventColorOption, Lab>>,
-): List<Pair<EventColorOption, Lab>> {
-    if (swatches.size < 2) return swatches
-    val byHue = swatches.sortedWith(
-        compareBy({ (_, lab) -> lab.hue }, { (_, lab) -> -lab.chroma }),
-    )
-    // Split the wheel after the largest empty arc between neighbouring hues;
-    // the default is the wrap gap (last hue back round to the first), i.e. the
-    // familiar 0→360 order, and we only rotate away from it for a wider void.
-    var cutAfter = byHue.lastIndex
-    var widestGap = 360.0 - byHue.last().second.hue + byHue.first().second.hue
-    for (i in 0 until byHue.lastIndex) {
-        val gap = byHue[i + 1].second.hue - byHue[i].second.hue
-        if (gap > widestGap) {
-            widestGap = gap
-            cutAfter = i
-        }
-    }
-    return byHue.subList(cutAfter + 1, byHue.size) + byHue.subList(0, cutAfter + 1)
-}
-
-/** Greedy max-distance filter: vivid colours stake out clusters first. */
-private fun thin(
-    swatches: List<Pair<EventColorOption, Lab>>,
-): List<Pair<EventColorOption, Lab>> {
-    val byVividness = swatches
-        .sortedWith(compareByDescending<Pair<EventColorOption, Lab>> { it.second.chroma }.thenBy { it.first.key })
-    val kept = mutableListOf<Pair<EventColorOption, Lab>>()
-    for (candidate in byVividness) {
-        if (kept.none { it.second.deltaE(candidate.second) < MIN_DELTA_E }) kept += candidate
-    }
-    return kept
-}
-
-/**
- * The softening the colour picker paints over every swatch: keep the hue, scale
- * and clamp saturation into a gentle band, and pin value to a constant so
- * nothing screams and everything reads on the surface. Value is fixed here so
- * curation is theme-independent — only hue and saturation distinguish painted
- * swatches.
- *
- * This is a self-contained mirror of floret-kit's `pastelize` hue/saturation
- * shaping (`de.jeanlucmakiola.floret.components.pastelize`), with value pinned
- * rather than theme-picked. Curation must reason about the colour the picker
- * paints, so the two shapings have to agree: if floret's saturation band or
- * curve changes, update this in step.
- */
-fun pastelArgb(rawArgb: Int): Int {
-    val r = ((rawArgb shr 16) and 0xFF) / 255f
-    val g = ((rawArgb shr 8) and 0xFF) / 255f
-    val b = (rawArgb and 0xFF) / 255f
-    val max = maxOf(r, g, b)
-    val min = minOf(r, g, b)
-    val delta = max - min
-    val hue = when {
-        delta == 0f -> 0f
-        max == r -> 60f * (((g - b) / delta) % 6f)
-        max == g -> 60f * (((b - r) / delta) + 2f)
-        else -> 60f * (((r - g) / delta) + 4f)
-    }.let { if (it < 0f) it + 360f else it }
-    val sat = (if (max == 0f) 0f else delta / max) * 0.6f
-    val s = sat.coerceIn(0.25f, 0.65f)
-    val v = PASTEL_VALUE
-    val c = v * s
-    val x = c * (1f - abs((hue / 60f) % 2f - 1f))
-    val m = v - c
-    val (rr, gg, bb) = when {
-        hue < 60f -> Triple(c, x, 0f)
-        hue < 120f -> Triple(x, c, 0f)
-        hue < 180f -> Triple(0f, c, x)
-        hue < 240f -> Triple(0f, x, c)
-        hue < 300f -> Triple(x, 0f, c)
-        else -> Triple(c, 0f, x)
-    }
-    fun channel(value: Float) = ((value + m) * 255f).roundToInt().coerceIn(0, 255)
-    return (0xFF shl 24) or (channel(rr) shl 16) or (channel(gg) shl 8) or channel(bb)
-}
-
-/** Reference lightness for curation; the picker paints at this on dark surfaces. */
-private const val PASTEL_VALUE = 0.82f
-
-/** Palettes at most this big skip the thinning (Google's ~26 pass through). */
-private const val CURATION_TRIGGER_SIZE = 36
-
-/** Minimum CIE76 ΔE between surviving painted swatches. */
-private const val MIN_DELTA_E = 13.0
-
-/**
- * Painted-chroma floor for oversized palettes: below this a swatch is a washed-
- * out tint — the neutrals and near-whites the saturation clamp muddies — so it
- * is dropped rather than shown as pale filler.
- */
-private const val PASTEL_CHROMA_FLOOR = 22.0
-
-/** CIE Lab (D65) — the space where Euclidean distance ≈ perceived difference. */
-private class Lab(val l: Double, val a: Double, val b: Double) {
-    val chroma: Double get() = hypot(a, b)
-
-    /** Hue angle in degrees, 0–360, around the Lab a-b plane. */
-    val hue: Double get() = (Math.toDegrees(atan2(b, a)) + 360.0) % 360.0
-
-    fun deltaE(other: Lab): Double =
-        sqrt((l - other.l).pow(2) + (a - other.a).pow(2) + (b - other.b).pow(2))
-
-    companion object {
-        fun of(argb: Int): Lab {
-            fun linear(shift: Int): Double {
-                val c = ((argb shr shift) and 0xFF) / 255.0
-                return if (c <= 0.04045) c / 12.92 else ((c + 0.055) / 1.055).pow(2.4)
-            }
-            val r = linear(16)
-            val g = linear(8)
-            val b = linear(0)
-            val x = (0.4124 * r + 0.3576 * g + 0.1805 * b) / 0.95047
-            val y = 0.2126 * r + 0.7152 * g + 0.0722 * b
-            val z = (0.0193 * r + 0.1192 * g + 0.9505 * b) / 1.08883
-            fun f(t: Double) = if (t > 0.008856) cbrt(t) else 7.787 * t + 16.0 / 116.0
-            val fy = f(y)
-            return Lab(116 * fy - 16, 500 * (f(x) - fy), 200 * (fy - f(z)))
-        }
-    }
-}

app/src/main/java/de/jeanlucmakiola/calendula/ui/CalendarHost.kt

@@ -33,7 +33,6 @@ import de.jeanlucmakiola.calendula.ui.common.viewBaseStack
 import de.jeanlucmakiola.calendula.ui.day.DayScreen
 import de.jeanlucmakiola.calendula.ui.detail.EventDetailScreen
 import de.jeanlucmakiola.calendula.ui.edit.EventEditScreen
-import de.jeanlucmakiola.calendula.ui.edit.ImportSource
 import de.jeanlucmakiola.calendula.ui.imports.ImportScreen
 import de.jeanlucmakiola.calendula.ui.month.MonthScreen
 import de.jeanlucmakiola.calendula.ui.search.SearchScreen
@@ -173,9 +172,6 @@ fun CalendarHost(
     // picker (many). A plain conditional overlay (no slide) — it's transient.
     var importUri by remember { mutableStateOf<android.net.Uri?>(null) }
     var importForm by remember { mutableStateOf<EventForm?>(null) }
-    // Which channel filled [importForm]: an .ics file (prompt to apply the default
-    // reminder) or an ACTION_INSERT intent (apply it automatically) — #49.
-    var importFormSource by remember { mutableStateOf(ImportSource.File) }
     // A restore (in-app "Restore from .ics" button) always runs the full import
     // flow — picker + summary — even for a single-event file, because the intent
     // is "restore a backup", not "add this one event". An externally opened .ics
@@ -194,7 +190,6 @@ fun CalendarHost(
     // reveals on top of whatever was open without extra dismissal.
     LaunchedEffect(requestedInsertForm) {
         if (requestedInsertForm != null) {
-            importFormSource = ImportSource.Insert
             importForm = requestedInsertForm
             onInsertConsumed()
         }
@@ -440,7 +435,6 @@ fun CalendarHost(
                 onClose = { importUri = null },
                 onOpenSingle = { form ->
                     importUri = null
-                    importFormSource = ImportSource.File
                     importForm = form
                 },
             )
@@ -449,7 +443,6 @@ fun CalendarHost(
             EventEditScreen(
                 initialDateIso = null,
                 initialForm = form,
-                initialFormSource = importFormSource,
                 onClose = { importForm = null },
                 onSaved = { importForm = null },
             )

app/src/main/java/de/jeanlucmakiola/calendula/ui/common/Picker.kt

@@ -1,26 +1,14 @@
 package de.jeanlucmakiola.calendula.ui.common
 
 import androidx.compose.animation.AnimatedVisibility
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.ColumnScope
-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.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Check
 import androidx.compose.material3.Checkbox
-import androidx.compose.material3.FilledTonalButton
 import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.SegmentedButton
-import androidx.compose.material3.SegmentedButtonDefaults
-import androidx.compose.material3.SingleChoiceSegmentedButtonRow
-import androidx.compose.material3.Surface
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
@@ -29,13 +17,12 @@ import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import de.jeanlucmakiola.calendula.R
-import de.jeanlucmakiola.floret.components.DialogAmountField
+import de.jeanlucmakiola.floret.components.CustomAmountEditor
 import de.jeanlucmakiola.floret.components.FullScreenPicker
 import de.jeanlucmakiola.floret.components.GroupedRow
 import de.jeanlucmakiola.floret.components.Position
@@ -195,56 +182,18 @@ private fun CustomReminderEditor(
     onConfirm: (Int) -> Unit,
 ) {
     val amount = amountText.toIntOrNull()?.takeIf { it in 1..999 }
-    Surface(
+    CustomAmountEditor(
-        color = MaterialTheme.colorScheme.surfaceContainerHigh,
+        amountText = amountText,
-        // A Position.Bottom shape: tight top corners meeting the row, full bottom.
+        onAmountChange = onAmountChange,
-        shape = RoundedCornerShape(topStart = 6.dp, topEnd = 6.dp, bottomStart = 22.dp, bottomEnd = 22.dp),
+        unitLabels = ReminderUnit.entries.map { stringResource(reminderUnitLabel(it)) },
-        modifier = Modifier
+        selectedUnit = unit.ordinal,
-            .fillMaxWidth()
+        onUnitChange = { onUnitChange(ReminderUnit.entries[it]) },
-            .padding(horizontal = 16.dp),
+        preview = amount?.let { reminderLeadTimeLabel(it * unit.minutesFactor) }
-    ) {
+            ?: stringResource(R.string.reminder_custom_amount),
-        Column(
+        setLabel = stringResource(R.string.reminder_custom_set),
-            modifier = Modifier.padding(16.dp),
+        confirmEnabled = amount != null,
-            verticalArrangement = Arrangement.spacedBy(16.dp),
+        onConfirm = { amount?.let { onConfirm(it * unit.minutesFactor) } },
-        ) {
+    )
-            // Unit toggle first so it stays visible above the keyboard once the
-            // amount field (the bottom row) is focused and scrolled into view.
-            SingleChoiceSegmentedButtonRow(modifier = Modifier.fillMaxWidth()) {
-                ReminderUnit.entries.forEachIndexed { index, entry ->
-                    SegmentedButton(
-                        selected = unit == entry,
-                        onClick = { onUnitChange(entry) },
-                        shape = SegmentedButtonDefaults.itemShape(index, ReminderUnit.entries.size),
-                        label = { Text(stringResource(reminderUnitLabel(entry))) },
-                    )
-                }
-            }
-            // Amount, a live preview of the lead time it resolves to, and Set —
-            // all on one row, sitting just above the keyboard.
-            Row(verticalAlignment = Alignment.CenterVertically) {
-                DialogAmountField(
-                    value = amountText,
-                    onValueChange = onAmountChange,
-                    placeholder = "10",
-                )
-                Spacer(Modifier.width(16.dp))
-                Text(
-                    text = amount?.let { reminderLeadTimeLabel(it * unit.minutesFactor) }
-                        ?: stringResource(R.string.reminder_custom_amount),
-                    style = MaterialTheme.typography.bodyLarge,
-                    color = MaterialTheme.colorScheme.onSurfaceVariant,
-                    modifier = Modifier.weight(1f),
-                )
-                Spacer(Modifier.width(16.dp))
-                FilledTonalButton(
-                    onClick = { amount?.let { onConfirm(it * unit.minutesFactor) } },
-                    enabled = amount != null,
-                ) {
-                    Text(stringResource(R.string.reminder_custom_set))
-                }
-            }
-        }
-    }
 }
 
 /** A short explanatory paragraph shown under a picker's title, above the rows. */
@@ -364,41 +313,136 @@ private fun CustomDaysEditor(
 ) {
     val days = amountText.toIntOrNull()
         ?.takeIf { it in AgendaRange.MIN_CUSTOM_DAYS..AgendaRange.MAX_CUSTOM_DAYS }
-    Surface(
+    CustomAmountEditor(
-        color = MaterialTheme.colorScheme.surfaceContainerHigh,
+        amountText = amountText,
-        shape = RoundedCornerShape(topStart = 6.dp, topEnd = 6.dp, bottomStart = 22.dp, bottomEnd = 22.dp),
+        onAmountChange = onAmountChange,
-        modifier = Modifier
+        placeholder = "30",
-            .fillMaxWidth()
+        preview = days?.let { pluralStringResource(R.plurals.agenda_range_days, it, it) }
-            .padding(horizontal = 16.dp),
+            ?: stringResource(R.string.agenda_range_custom_hint),
-    ) {
+        setLabel = stringResource(R.string.reminder_custom_set),
-        Row(
+        confirmEnabled = days != null,
-            modifier = Modifier.padding(16.dp),
+        onConfirm = { days?.let(onConfirm) },
-            verticalAlignment = Alignment.CenterVertically,
+    )
+}
+
+/**
+ * Snooze-duration picker, full-screen and **single-select**: the [presets]
+ * (whole-minute delays) each sit as a checkmark row, with a "Custom" row that
+ * expands an inline amount field plus a Minutes/Hours unit toggle to enter an
+ * arbitrary delay. Mirrors [AgendaRangePicker]'s custom-expand pattern; picking
+ * a preset or confirming a custom value applies via [onSelect] and closes.
+ * [label] renders a delay in minutes as a duration ("10 minutes", "1 hour") and
+ * is reused for both the rows and the custom preview.
+ */
+@Composable
+fun SnoozeDurationPicker(
+    title: String,
+    presets: List<Int>,
+    selected: Int,
+    label: @Composable (Int) -> String,
+    onSelect: (Int) -> Unit,
+    onDismiss: () -> Unit,
+) {
+    val customSelected = selected !in presets
+    val rowCount = presets.size + 1 // + the custom row
+
+    var customExpanded by rememberSaveable { mutableStateOf(false) }
+    var amountText by rememberSaveable {
+        mutableStateOf(if (customSelected) snoozeCustomAmount(selected).toString() else "")
+    }
+    var unit by rememberSaveable {
+        mutableStateOf(if (customSelected) snoozeCustomUnit(selected) else ReminderUnit.Minutes)
+    }
+
+    FullScreenPicker(title = title, onDismiss = onDismiss, predictiveBack = true) {
+        presets.forEachIndexed { index, minute ->
+            val isSelected = minute == selected
+            GroupedRow(
+                title = label(minute),
+                position = positionOf(index, rowCount),
+                selected = isSelected,
+                trailing = if (isSelected) {
+                    { SelectedCheck() }
+                } else {
+                    null
+                },
+                onClick = {
+                    onSelect(minute)
+                    onDismiss()
+                },
+            )
+        }
+        // The Custom row connects downward into the editor card when expanded, so
+        // the two read as one grouped container (the shared custom-expand pattern).
+        GroupedRow(
+            title = if (customSelected) label(selected) else stringResource(R.string.event_edit_reminder_custom),
+            position = if (customExpanded) Position.Top else positionOf(presets.size, rowCount),
+            selected = customSelected,
+            trailing = if (customSelected) {
+                { SelectedCheck() }
+            } else {
+                null
+            },
+            onClick = { customExpanded = !customExpanded },
+        )
+        AnimatedVisibility(
+            visible = customExpanded,
+            enter = expandEnter(),
+            exit = collapseExit(),
         ) {
-            DialogAmountField(
+            CustomSnoozeEditor(
-                value = amountText,
+                amountText = amountText,
-                onValueChange = onAmountChange,
+                onAmountChange = { amountText = it },
-                placeholder = "30",
+                unit = unit,
+                onUnitChange = { unit = it },
+                label = label,
+                onConfirm = { minutes ->
+                    onSelect(minutes)
+                    onDismiss()
+                },
             )
-            Spacer(Modifier.width(16.dp))
-            Text(
-                text = days?.let { pluralStringResource(R.plurals.agenda_range_days, it, it) }
-                    ?: stringResource(R.string.agenda_range_custom_hint),
-                style = MaterialTheme.typography.bodyLarge,
-                color = MaterialTheme.colorScheme.onSurfaceVariant,
-                modifier = Modifier.weight(1f),
-            )
-            Spacer(Modifier.width(16.dp))
-            FilledTonalButton(
-                onClick = { days?.let(onConfirm) },
-                enabled = days != null,
-            ) {
-                Text(stringResource(R.string.reminder_custom_set))
-            }
         }
     }
 }
 
+/** Whole hours if the delay divides evenly, else minutes. */
+private fun snoozeCustomUnit(minutes: Int): ReminderUnit =
+    if (minutes % ReminderUnit.Hours.minutesFactor == 0) ReminderUnit.Hours else ReminderUnit.Minutes
+
+private fun snoozeCustomAmount(minutes: Int): Int =
+    if (minutes % ReminderUnit.Hours.minutesFactor == 0) minutes / ReminderUnit.Hours.minutesFactor else minutes
+
+/**
+ * The expanded "Custom" snooze editor: a tonal card connected to the Custom row
+ * above it. A Minutes/Hours unit toggle, an amount field with a live preview of
+ * the delay it resolves to, and a tonal confirm enabled only for a valid 1–999
+ * amount. [onConfirm] receives the final delay in minutes.
+ */
+@Composable
+private fun CustomSnoozeEditor(
+    amountText: String,
+    onAmountChange: (String) -> Unit,
+    unit: ReminderUnit,
+    onUnitChange: (ReminderUnit) -> Unit,
+    label: @Composable (Int) -> String,
+    onConfirm: (Int) -> Unit,
+) {
+    val units = remember { listOf(ReminderUnit.Minutes, ReminderUnit.Hours) }
+    val amount = amountText.toIntOrNull()?.takeIf { it in 1..999 }
+    CustomAmountEditor(
+        amountText = amountText,
+        onAmountChange = onAmountChange,
+        unitLabels = units.map { stringResource(reminderUnitLabel(it)) },
+        selectedUnit = units.indexOf(unit).coerceAtLeast(0),
+        onUnitChange = { onUnitChange(units[it]) },
+        preview = amount?.let { label(it * unit.minutesFactor) }
+            ?: stringResource(R.string.reminder_custom_amount),
+        setLabel = stringResource(R.string.reminder_custom_set),
+        confirmEnabled = amount != null,
+        onConfirm = { amount?.let { onConfirm(it * unit.minutesFactor) } },
+    )
+}
+
 /** Human label for an [AgendaRange] (used by the picker rows and settings summary). */
 @Composable
 fun agendaRangeLabel(range: AgendaRange): String = when (range) {

app/src/main/java/de/jeanlucmakiola/calendula/ui/detail/EventDetailViewModel.kt

@@ -141,20 +141,13 @@ class EventDetailViewModel @Inject constructor(
     private suspend fun loadDetail(target: Target): EventDetailUiState = try {
         val detail = repository.eventDetail(target.eventId)
         // The Events row holds the series start; replace it with this
-        // occurrence's time so recurring events render correctly. An external
+        // occurrence's time so recurring events render correctly.
-        // "open event" that names no occurrence ([NO_OCCURRENCE_TIME] — e.g. a
+        val corrected = detail.copy(
-        // bare content://.../events/<id> VIEW intent, issue #48) keeps the row's
+            instance = detail.instance.copy(
-        // own DTSTART/DTEND instead of overriding it to the epoch.
+                start = Instant.fromEpochMilliseconds(target.beginMillis),
-        val corrected = if (target.beginMillis == NO_OCCURRENCE_TIME) {
+                end = Instant.fromEpochMilliseconds(target.endMillis),
-            detail
+            ),
-        } else {
+        )
-            detail.copy(
-                instance = detail.instance.copy(
-                    start = Instant.fromEpochMilliseconds(target.beginMillis),
-                    end = Instant.fromEpochMilliseconds(target.endMillis),
-                ),
-            )
-        }
         val calendar = repository.calendars().first()
             .firstOrNull { it.id == corrected.instance.calendarId }
         EventDetailUiState.Success(
@@ -175,16 +168,6 @@ class EventDetailViewModel @Inject constructor(
 
     /** A tapped occurrence: the series [eventId] plus this occurrence's own times. */
     private data class Target(val eventId: Long, val beginMillis: Long, val endMillis: Long)
-
-    companion object {
-        /**
-         * Sentinel begin/end for an "open this event" that names no occurrence —
-         * a bare `content://com.android.calendar/events/<id>` VIEW intent with no
-         * `EXTRA_EVENT_BEGIN_TIME` (issue #48). [loadDetail] then keeps the event
-         * row's own DTSTART/DTEND instead of overriding it to the epoch.
-         */
-        const val NO_OCCURRENCE_TIME: Long = Long.MIN_VALUE
-    }
 }
 
 /** A filesystem-safe `.ics` file name from an event title (or a fallback). */

app/src/main/java/de/jeanlucmakiola/calendula/ui/edit/EventEditScreen.kt

@@ -89,7 +89,6 @@ import androidx.compose.ui.graphics.isSpecified
 import androidx.compose.ui.graphics.Shape
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.platform.LocalContext
-import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.AnnotatedString
 import androidx.compose.ui.text.TextStyle
@@ -183,14 +182,12 @@ fun EventEditScreen(
     editKey: LongArray? = null,
     initialStartMinutes: Int? = null,
     initialForm: EventForm? = null,
-    initialFormSource: ImportSource = ImportSource.File,
     viewModel: EventEditViewModel = hiltViewModel(),
 ) {
     LaunchedEffect(initialDateIso, editKey, initialForm) {
         when {
-            // A prefilled open: a single-event .ics for review, or an external
+            // Single-event .ics open: the form arrives prefilled for review.
-            // ACTION_INSERT intent. The source drives how reminders are seeded.
+            initialForm != null -> viewModel.openImported(initialForm)
-            initialForm != null -> viewModel.openImported(initialForm, initialFormSource)
             editKey != null -> viewModel.openForEdit(
                 eventId = editKey[0],
                 beginMillis = editKey[1],
@@ -205,7 +202,6 @@ fun EventEditScreen(
     }
     val state by viewModel.state.collectAsStateWithLifecycle()
     val loadFailed by viewModel.loadFailed.collectAsStateWithLifecycle()
-    val importReminderPrompt by viewModel.importReminderPrompt.collectAsStateWithLifecycle()
 
     // The form is intentionally forgotten on every close (cancel or save) so
     // the next open starts clean; it survives rotation because openNew /
@@ -336,56 +332,6 @@ fun EventEditScreen(
             },
         )
     }
-
-    // A .ics import respects the file's reminders, but offers to swap in the
-    // configured default rather than silently deciding for the user (#49).
-    importReminderPrompt?.let { prompt ->
-        ImportReminderPromptDialog(
-            currentReminderCount = prompt.currentReminderCount,
-            onApply = viewModel::applyImportedReminderDefault,
-            onKeep = viewModel::dismissImportedReminderPrompt,
-        )
-    }
-}
-
-/**
- * Offer to apply the settings default reminder to an event opened from a `.ics`
- * file. The file's own reminders are kept unless the user accepts. A plain
- * two-choice confirmation, so an [AlertDialog] (not a full-screen picker).
- */
-@Composable
-private fun ImportReminderPromptDialog(
-    currentReminderCount: Int,
-    onApply: () -> Unit,
-    onKeep: () -> Unit,
-) {
-    AlertDialog(
-        onDismissRequest = onKeep,
-        title = { Text(stringResource(R.string.import_reminder_prompt_title)) },
-        text = {
-            Text(
-                if (currentReminderCount == 0) {
-                    stringResource(R.string.import_reminder_prompt_body_none)
-                } else {
-                    pluralStringResource(
-                        R.plurals.import_reminder_prompt_body_existing,
-                        currentReminderCount,
-                        currentReminderCount,
-                    )
-                },
-            )
-        },
-        confirmButton = {
-            TextButton(onClick = onApply) {
-                Text(stringResource(R.string.import_reminder_prompt_apply))
-            }
-        },
-        dismissButton = {
-            TextButton(onClick = onKeep) {
-                Text(stringResource(R.string.import_reminder_prompt_keep))
-            }
-        },
-    )
 }
 
 /**
@@ -672,15 +618,16 @@ private fun EventEditContent(
 
         Spacer(Modifier.height(gap))
 
-        // Calendar card — tap anywhere to pick the target calendar. Editing
+        // Calendar card — tap anywhere to pick the target calendar. Picking a
-        // keeps the owning calendar (moving events between calendars is a
+        // different one while editing *moves* the event (copy+delete on save,
-        // sync-adapter minefield; every stock calendar app locks it too).
+        // since CALENDAR_ID can't be updated in place). Managed special-dates
+        // events stay locked: the contact sync owns their calendar.
         EditCard(
             icon = Icons.Default.CalendarMonth,
             iconContentDescription = stringResource(R.string.event_detail_calendar),
             iconTint = accent,
             onClick = { showCalendarPicker = true }
-                .takeIf { state.calendars.isNotEmpty() && !state.isEditing },
+                .takeIf { state.calendars.isNotEmpty() && !state.isManaged },
         ) {
             Text(
                 text = selectedCalendar?.displayName
@@ -1801,21 +1748,12 @@ private fun ColorPickerDialog(
             modifier = Modifier.padding(horizontal = 24.dp, vertical = 8.dp),
         ) {
             if (palette.isNotEmpty()) {
-                // The event's current colour may not be in the curated palette
-                // (a thinned near-duplicate, or a raw colour set elsewhere) —
-                // append it so the selection ring has a home.
-                val swatches = palette.map { it.argb }.let {
-                    if (selected != null && selected !in it) it + selected else it
-                }
                 ColorSwatchRow(
-                    colors = swatches,
+                    colors = palette.map { it.argb },
                     selected = selected,
                     onSelect = { argb ->
-                        val option = palette.firstOrNull { it.argb == argb }
+                        palette.firstOrNull { it.argb == argb }
-                        // The appended current colour has no provider key to
+                            ?.let { onPickKey(it.key, it.argb) }
-                        // write — it is already the event's colour, so just
-                        // close.
-                        if (option != null) onPickKey(option.key, option.argb) else onDismiss()
                     },
                     dark = dark,
                 )

app/src/main/java/de/jeanlucmakiola/calendula/ui/edit/EventEditViewModel.kt

@@ -50,36 +50,6 @@ import kotlin.time.Duration.Companion.hours
 import kotlin.time.Instant
 import javax.inject.Inject
 
-/**
- * Where a prefilled [EventEditViewModel.openImported] form came from — the two
- * sources want different reminder handling (#49).
- */
-enum class ImportSource {
-    /**
-     * An external `ACTION_INSERT` intent (another app/widget, e.g. Google Maps).
-     * It carries no reminders of its own, so the settings default is applied
-     * automatically, exactly like an in-app new event.
-     */
-    Insert,
-
-    /**
-     * A parsed single-event `.ics` file. Its own reminders are respected; the
-     * settings default is offered through [EventEditViewModel.importReminderPrompt]
-     * rather than silently applied or suppressed.
-     */
-    File,
-}
-
-/**
- * A pending offer to swap an imported `.ics` event's reminders for the settings
- * default (#49). [currentReminderCount] is what the file carried (0 or more);
- * [defaultReminders] is what accepting would set.
- */
-data class ImportReminderPrompt(
-    val currentReminderCount: Int,
-    val defaultReminders: List<Int>,
-)
-
 /**
  * Holds the event form being composed. The form's calendar id resolves to
  * (user pick > last used > first writable); the resolved value is what the UI
@@ -108,16 +78,10 @@ class EventEditViewModel @Inject constructor(
     // freezes the auto-applied default: switching calendars no longer overwrites
     // their choice. Reset with the form.
     private val _remindersTouched = MutableStateFlow(false)
-    // A one-time offer, raised when a .ics import opens, to replace the file's
-    // reminders with the settings default (#49). Null while there's nothing to ask.
-    private val _importReminderPrompt = MutableStateFlow<ImportReminderPrompt?>(null)
 
     /** True when the event to edit couldn't be loaded; the screen closes itself. */
     val loadFailed: StateFlow<Boolean> = _loadFailed.asStateFlow()
 
-    /** Pending "apply your default reminder?" offer for a `.ics` import; null when none. */
-    val importReminderPrompt: StateFlow<ImportReminderPrompt?> = _importReminderPrompt.asStateFlow()
-
     /**
      * The event being edited plus everything the form saw at load time.
      * For recurring events the write scope is chosen at save time; the
@@ -148,17 +112,7 @@ class EventEditViewModel @Inject constructor(
         val allDay: List<Int>,
         val timedOverrides: Map<Long, List<Int>>,
         val allDayOverrides: Map<Long, List<Int>>,
-    ) {
+    )
-        /** The default reminders for an event on [calendarId] of the given kind. */
-        fun resolveFor(calendarId: Long?, isAllDay: Boolean): List<Int> = resolveDefaultReminder(
-            timedGlobal = timed,
-            allDayGlobal = allDay,
-            timedOverrides = timedOverrides,
-            allDayOverrides = allDayOverrides,
-            calendarId = calendarId,
-            isAllDay = isAllDay,
-        )
-    }
 
     private data class ExternalInputs(
         val writable: List<CalendarSource>,
@@ -287,39 +241,18 @@ class EventEditViewModel @Inject constructor(
     }
 
     /**
-     * Seed a fresh event from a prefilled [form] — a parsed single-event `.ics`
+     * Seed a fresh event from a parsed `.ics` file (the single-event "open into
-     * file ([ImportSource.File]) or an external `ACTION_INSERT` intent (another
+     * the create form" path). [form] already carries the file's fields; its
-     * app/widget creating an event, e.g. Google Maps' "add to calendar";
+     * [EventForm.calendarId] is null so the calendar still resolves to the
-     * [ImportSource.Insert]; #30, #49). [EventForm.calendarId] is null so the
+     * last-used/first-writable one, and reminders are frozen as touched so the
-     * calendar still resolves to the last-used/first-writable one.
+     * settings default never overwrites what the file specified. No-op when a
-     *
+     * form is already open, so the prefill survives configuration changes.
-     * Reminders are handled per [source], because the two paths mean different
-     * things by "no reminders":
-     * - [ImportSource.Insert] carries no reminder semantics, so the settings
-     *   default is applied automatically like an in-app new event (a form that
-     *   somehow did carry reminders keeps them, frozen).
-     * - [ImportSource.File] owns its reminders, so they're frozen as-is; if a
-     *   settings default is configured and differs, [importReminderPrompt] offers
-     *   to swap it in rather than silently deciding for the user.
-     *
-     * No-op when a form is already open, so the prefill survives configuration
-     * changes.
      */
-    fun openImported(form: EventForm, source: ImportSource) {
+    fun openImported(form: EventForm) {
         if (_form.value != null || _editTarget.value != null) return
+        _remindersTouched.value = true
         _revealed.value = form.populatedFields()
         _form.value = form
-        when (source) {
-            ImportSource.Insert ->
-                if (form.reminders.isNotEmpty()) _remindersTouched.value = true
-                else applyDefaultReminder()
-
-            ImportSource.File -> {
-                // Respect the file's own reminders; never silently overwrite them.
-                _remindersTouched.value = true
-                maybePromptImportedReminderDefault(form)
-            }
-        }
     }
 
     /**
@@ -333,12 +266,26 @@ class EventEditViewModel @Inject constructor(
     private fun applyDefaultReminder(calendarId: Long? = null) {
         if (_editTarget.value != null || _remindersTouched.value) return
         viewModelScope.launch {
-            val defaults = reminderDefaults()
+            val defaults = combine(
+                settingsPrefs.defaultReminderMinutes,
+                settingsPrefs.defaultAllDayReminderMinutes,
+                settingsPrefs.perCalendarReminderOverride,
+                settingsPrefs.perCalendarAllDayReminderOverride,
+            ) { timed, allDay, timedOv, allDayOv ->
+                ReminderDefaults(timed, allDay, timedOv, allDayOv)
+            }.first()
             val targetId = calendarId ?: resolvedCalendarId.first()
             // Re-check after suspending: bail if the form closed or the user edited.
             val form = _form.value ?: return@launch
             if (_editTarget.value != null || _remindersTouched.value) return@launch
-            val reminders = defaults.resolveFor(targetId, form.isAllDay)
+            val reminders = resolveDefaultReminder(
+                timedGlobal = defaults.timed,
+                allDayGlobal = defaults.allDay,
+                timedOverrides = defaults.timedOverrides,
+                allDayOverrides = defaults.allDayOverrides,
+                calendarId = targetId,
+                isAllDay = form.isAllDay,
+            )
             _form.value = form.copy(reminders = reminders)
             // Surface the section so an auto-applied default is visible and
             // removable, even when Reminders isn't a default-shown field.
@@ -348,52 +295,6 @@ class EventEditViewModel @Inject constructor(
         }
     }
 
-    /** Snapshot the four settings-default reminder flows into one value. */
-    private suspend fun reminderDefaults(): ReminderDefaults = combine(
-        settingsPrefs.defaultReminderMinutes,
-        settingsPrefs.defaultAllDayReminderMinutes,
-        settingsPrefs.perCalendarReminderOverride,
-        settingsPrefs.perCalendarAllDayReminderOverride,
-    ) { timed, allDay, timedOv, allDayOv ->
-        ReminderDefaults(timed, allDay, timedOv, allDayOv)
-    }.first()
-
-    /**
-     * A `.ics` import respects the file's reminders, but an event opened from a
-     * file often has none while the user still expects their configured default.
-     * Rather than silently deciding, raise a one-time offer to swap in the
-     * settings default — but only when there's a real choice: a default is
-     * configured and it isn't already exactly what the file carried.
-     */
-    private fun maybePromptImportedReminderDefault(form: EventForm) {
-        viewModelScope.launch {
-            val targetId = resolvedCalendarId.first()
-            val default = reminderDefaults().resolveFor(targetId, form.isAllDay)
-            // Bail if the form closed or became an edit while we resolved.
-            val current = _form.value ?: return@launch
-            if (_editTarget.value != null) return@launch
-            if (default.isEmpty() || default == current.reminders) return@launch
-            _importReminderPrompt.value = ImportReminderPrompt(
-                currentReminderCount = current.reminders.size,
-                defaultReminders = default,
-            )
-        }
-    }
-
-    /** Accept the import prompt: replace the file's reminders with the default. */
-    fun applyImportedReminderDefault() {
-        val prompt = _importReminderPrompt.value ?: return
-        _importReminderPrompt.value = null
-        // Already frozen as touched by openImported; this just swaps the values.
-        update { it.copy(reminders = prompt.defaultReminders) }
-        _revealed.value = _revealed.value + EventFormField.Reminders
-    }
-
-    /** Decline the import prompt: keep the file's own reminders untouched. */
-    fun dismissImportedReminderPrompt() {
-        _importReminderPrompt.value = null
-    }
-
     /**
      * Load an existing event into the form. [beginMillis]/[endMillis] are the
      * tapped occurrence's own times, like on the detail screen. No-op while a
@@ -428,7 +329,6 @@ class EventEditViewModel @Inject constructor(
         _editTarget.value = null
         _loadFailed.value = false
         _remindersTouched.value = false
-        _importReminderPrompt.value = null
     }
 
     /** Unfold one optional field, picked in the "more fields" dialog. */
@@ -539,10 +439,15 @@ class EventEditViewModel @Inject constructor(
             _saveState.value = SaveUiState.Saved
             return
         }
+        // Changing the calendar moves the event (copy+delete — CALENDAR_ID can't
+        // be updated in place) and is inherently whole-series: an occurrence
+        // can't live in a different calendar than its series, so a move skips the
+        // scope dialog even for a recurring event.
+        val movingCalendar = target != null && form.calendarId != target.original.calendarId
         // Managed events are a yearly series whose editable fields (reminders,
         // notes, location) live on the series row — never offer the scope dialog,
         // which would split the series into an exception the sync then reverts.
-        if (target != null && target.original.rrule != null && !current.isManaged) {
+        if (target != null && target.original.rrule != null && !current.isManaged && !movingCalendar) {
             _saveState.value = SaveUiState.AwaitingScope
             return
         }
@@ -597,6 +502,17 @@ class EventEditViewModel @Inject constructor(
                 if (target == null) {
                     repository.createEvent(form)
                     prefs.setLastUsedCalendarId(requireNotNull(form.calendarId))
+                } else if (form.calendarId != target.original.calendarId) {
+                    // Move to the picked calendar (copy+delete), carrying any
+                    // field edits made in the same save. The target becomes the
+                    // last-used calendar, like a create does.
+                    repository.moveEvent(
+                        eventId = target.eventId,
+                        targetCalendarId = requireNotNull(form.calendarId),
+                        original = target.original,
+                        updated = form,
+                    )
+                    prefs.setLastUsedCalendarId(requireNotNull(form.calendarId))
                 } else {
                     when (scope) {
                         RecurringWriteScope.ThisEvent ->

app/src/main/java/de/jeanlucmakiola/calendula/ui/settings/SettingsScreen.kt

@@ -133,6 +133,7 @@ import de.jeanlucmakiola.calendula.ui.common.ReminderDefaultPicker
 import de.jeanlucmakiola.calendula.ui.common.TimePickerAlert
 import de.jeanlucmakiola.floret.components.positionOf
 import de.jeanlucmakiola.calendula.ui.common.reminderLeadTimeLabel
+import de.jeanlucmakiola.calendula.ui.common.SnoozeDurationPicker
 import de.jeanlucmakiola.calendula.ui.common.rememberCalendarSlideSpec
 import de.jeanlucmakiola.calendula.ui.common.currentLocale
 import de.jeanlucmakiola.calendula.ui.common.eventFormFieldIcon
@@ -1174,10 +1175,9 @@ private fun NotificationsScreen(
     }
 
     if (showSnooze) {
-        OptionPicker(
+        SnoozeDurationPicker(
             title = stringResource(R.string.settings_snooze_duration),
-            predictiveBack = true,
+            presets = SNOOZE_PRESETS,
-            options = SNOOZE_PRESETS,
             selected = state.snoozeMinutes,
             label = { snoozeDurationLabel(it) },
             onSelect = { viewModel.setSnoozeMinutes(it) },

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

@@ -117,16 +117,6 @@
     <string name="event_edit_gone_title">Event deleted</string>
     <string name="event_edit_gone_body">This event was deleted in the meantime, for example on another device. Your changes can no longer be saved.</string>
 
-    <!-- Event form — apply default reminder to an imported .ics event (#49) -->
-    <string name="import_reminder_prompt_title">Apply your default reminder?</string>
-    <string name="import_reminder_prompt_body_none">This event was imported without any reminder.</string>
-    <plurals name="import_reminder_prompt_body_existing">
-        <item quantity="one">This event was imported with %1$d reminder.</item>
-        <item quantity="other">This event was imported with %1$d reminders.</item>
-    </plurals>
-    <string name="import_reminder_prompt_apply">Apply default</string>
-    <string name="import_reminder_prompt_keep">Keep as-is</string>
-
     <!-- Event form — recurrence picker (v1.3) -->
     <string name="event_edit_recurrence_none">Does not repeat</string>
     <string name="event_edit_recurrence_custom">Custom</string>

app/src/test/java/de/jeanlucmakiola/calendula/data/calendar/CalendarRepositoryImplTest.kt

@@ -312,6 +312,46 @@ class CalendarRepositoryImplTest {
         assertThat(fake.updatedEvents).containsExactly(Triple(42L, original, updated))
     }
 
+    @Test
+    fun `moveEvent forwards id, target calendar and both forms`(@TempDir tempDir: Path) = runTest {
+        val fake = FakeCalendarDataSource().apply { nextInsertId = 77L }
+        val repo = CalendarRepositoryImpl(fake, newPrefs(tempDir), newSettings(tempDir), Dispatchers.Unconfined)
+        val original = EventForm(
+            calendarId = 1L,
+            title = "Stand-up",
+            start = LocalDateTime(LocalDate(2026, 6, 12), LocalTime(9, 0)),
+            end = LocalDateTime(LocalDate(2026, 6, 12), LocalTime(9, 15)),
+        )
+        val updated = original.copy(calendarId = 3L)
+
+        val newId = repo.moveEvent(eventId = 42L, targetCalendarId = 3L, original = original, updated = updated)
+
+        assertThat(newId).isEqualTo(77L)
+        assertThat(fake.movedEvents).containsExactly(
+            FakeCalendarDataSource.MovedEvent(42L, 3L, original, updated),
+        )
+    }
+
+    @Test
+    fun `moveEvent propagates write failures`(@TempDir tempDir: Path) = runTest {
+        val fake = FakeCalendarDataSource().apply {
+            writeError = WriteFailedException("insert moved event into calendar id=3")
+        }
+        val repo = CalendarRepositoryImpl(fake, newPrefs(tempDir), newSettings(tempDir), Dispatchers.Unconfined)
+        val form = EventForm(
+            calendarId = 1L,
+            start = LocalDateTime(LocalDate(2026, 6, 12), LocalTime(9, 0)),
+            end = LocalDateTime(LocalDate(2026, 6, 12), LocalTime(10, 0)),
+        )
+
+        try {
+            repo.moveEvent(eventId = 42L, targetCalendarId = 3L, original = form, updated = form.copy(calendarId = 3L))
+            error("Expected WriteFailedException")
+        } catch (expected: WriteFailedException) {
+            assertThat(expected.message).contains("3")
+        }
+    }
+
     @Test
     fun `updateEvent propagates write failures`(@TempDir tempDir: Path) = runTest {
         val fake = FakeCalendarDataSource().apply {

app/src/test/java/de/jeanlucmakiola/calendula/data/calendar/EventDetailMapperTest.kt

@@ -32,7 +32,6 @@ class EventDetailMapperTest {
         accessLevel: Any? = null,
         timezone: String? = null,
         selfStatus: Any? = null,
-        duration: String? = null,
     ): MapColumnReader = MapColumnReader(
         EventDetailProjection.IDX_EVENT_ID to eventId,
         EventDetailProjection.IDX_TITLE to title,
@@ -52,7 +51,6 @@ class EventDetailMapperTest {
         EventDetailProjection.IDX_EVENT_TIMEZONE to timezone,
         EventDetailProjection.IDX_SELF_ATTENDEE_STATUS to selfStatus,
         EventDetailProjection.IDX_EVENT_COLOR_KEY to eventColorKey,
-        EventDetailProjection.IDX_DURATION to duration,
     )
 
     private fun attendeeReader(
@@ -136,32 +134,12 @@ class EventDetailMapperTest {
     fun `pre-1970 negative dtstart is kept, not dropped (issue #34)`() {
         // A yearly birthday/anniversary anchored before the epoch has a
         // legitimately negative UTC epoch-millis DTSTART; recurring rows carry
-        // no DTEND (they use DURATION), so the length comes from DURATION.
+        // no DTEND (they use DURATION), so it stays end == begin.
         val begin = -157_766_400_000L // 1965-01-01T00:00:00Z
-        val detail = detailReader(dtstart = begin, dtend = null, duration = "P1D").toDetail()
+        val detail = detailReader(dtstart = begin, dtend = null).toDetail()
         assertThat(detail).isNotNull()
         assertThat(detail!!.instance.start.toEpochMilliseconds()).isEqualTo(begin)
-        assertThat(detail.instance.end.toEpochMilliseconds()).isEqualTo(begin + 86_400_000L)
+        assertThat(detail.instance.end.toEpochMilliseconds()).isEqualTo(begin)
-    }
-
-    @Test
-    fun `absent dtend takes its length from DURATION (issue #48)`() {
-        // A recurring series row has no DTEND. Opened without a named
-        // occurrence — a bare content://…/events/<id> VIEW intent — the row's
-        // own times are what render, so DURATION has to supply the length or
-        // the event shows as zero-length (10:00–10:00).
-        val begin = 1_000_000_000L
-        val detail = detailReader(dtstart = begin, dtend = null, duration = "PT1H").toDetail()
-        assertThat(detail).isNotNull()
-        assertThat(detail!!.instance.end.toEpochMilliseconds()).isEqualTo(begin + 3_600_000L)
-    }
-
-    @Test
-    fun `absent dtend and absent DURATION stays zero-length`() {
-        val begin = 1_000_000_000L
-        val detail = detailReader(dtstart = begin, dtend = null, duration = null).toDetail()
-        assertThat(detail).isNotNull()
-        assertThat(detail!!.instance.end.toEpochMilliseconds()).isEqualTo(begin)
     }
 
     @Test

app/src/test/java/de/jeanlucmakiola/calendula/data/calendar/EventWriteMapperTest.kt

@@ -220,117 +220,6 @@ class EventWriteMapperTest {
         assertThat(values).containsEntry(CalendarContract.Events.DESCRIPTION, null)
     }
 
-    // --- buildOccurrenceCancelValues ("delete only this event") ---
-
-    @Test
-    fun `occurrence cancel anchors a single instance and cancels only it`() {
-        val values = buildOccurrenceCancelValues(
-            originalInstanceMillis = 1_700_000_000_000L,
-            dtStartMillis = 1_700_000_000_000L,
-            duration = "P3600S",
-            timezone = "Europe/Berlin",
-            allDay = 0,
-        )
-        assertThat(values[CalendarContract.Events.ORIGINAL_INSTANCE_TIME])
-            .isEqualTo(1_700_000_000_000L)
-        // DTSTART + DURATION make the provider derive a single instance and drop
-        // the inherited RRULE, so only this occurrence is cancelled — not the
-        // whole series (#47). DTEND is never sent (the provider rejects it).
-        assertThat(values[CalendarContract.Events.DTSTART]).isEqualTo(1_700_000_000_000L)
-        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("P3600S")
-        assertThat(values[CalendarContract.Events.EVENT_TIMEZONE]).isEqualTo("Europe/Berlin")
-        assertThat(values[CalendarContract.Events.STATUS])
-            .isEqualTo(CalendarContract.Events.STATUS_CANCELED)
-        assertThat(values).doesNotContainKey(CalendarContract.Events.DTEND)
-        assertThat(values).doesNotContainKey(CalendarContract.Events.RRULE)
-    }
-
-    @Test
-    fun `all-day occurrence cancel keeps the all-day flag and utc zone`() {
-        val values = buildOccurrenceCancelValues(
-            originalInstanceMillis = 1_700_000_000_000L,
-            dtStartMillis = 1_700_000_000_000L,
-            duration = "P1D",
-            timezone = "UTC",
-            allDay = 1,
-        )
-        assertThat(values[CalendarContract.Events.ALL_DAY]).isEqualTo(1)
-        assertThat(values[CalendarContract.Events.EVENT_TIMEZONE]).isEqualTo("UTC")
-        assertThat(values[CalendarContract.Events.STATUS])
-            .isEqualTo(CalendarContract.Events.STATUS_CANCELED)
-    }
-
-    // --- buildOccurrenceExdateValues ("delete only this event", no _sync_id) ---
-
-    @Test
-    fun `exdate drop excludes the occurrence and rewrites the recurrence set`() {
-        // 2026-07-15T08:00:00Z.
-        val values = buildOccurrenceExdateValues(
-            existingExdate = null,
-            occurrenceMillis = 1_784_102_400_000L,
-            dtStartMillis = 1_783_929_600_000L,
-            rrule = "FREQ=DAILY;COUNT=5",
-            duration = "PT1H",
-            timezone = "Europe/Berlin",
-            allDay = 0,
-        )
-        assertThat(values[CalendarContract.Events.EXDATE]).isEqualTo("20260715T080000Z")
-        // The whole time/recurrence set rides along: an EXDATE-only update is not
-        // treated as a recurrence change, so the provider would leave the expanded
-        // instances (and the occurrence) in place. DTSTART alone is worse — it
-        // makes the provider recompute lastDate as a single instance and collapse
-        // the series to its first occurrence.
-        assertThat(values[CalendarContract.Events.DTSTART]).isEqualTo(1_783_929_600_000L)
-        assertThat(values[CalendarContract.Events.RRULE]).isEqualTo("FREQ=DAILY;COUNT=5")
-        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("PT1H")
-        assertThat(values[CalendarContract.Events.EVENT_TIMEZONE]).isEqualTo("Europe/Berlin")
-    }
-
-    @Test
-    fun `exdate drop appends to an existing exdate list`() {
-        val values = buildOccurrenceExdateValues(
-            existingExdate = "20260714T080000Z",
-            occurrenceMillis = 1_784_102_400_000L,
-            dtStartMillis = 1_783_929_600_000L,
-            rrule = "FREQ=DAILY;COUNT=5",
-            duration = "PT1H",
-            timezone = "Europe/Berlin",
-            allDay = 0,
-        )
-        assertThat(values[CalendarContract.Events.EXDATE])
-            .isEqualTo("20260714T080000Z,20260715T080000Z")
-    }
-
-    @Test
-    fun `exdate drop folds away a repeated occurrence`() {
-        val values = buildOccurrenceExdateValues(
-            existingExdate = "20260715T080000Z",
-            occurrenceMillis = 1_784_102_400_000L,
-            dtStartMillis = 1_783_929_600_000L,
-            rrule = "FREQ=DAILY;COUNT=5",
-            duration = "PT1H",
-            timezone = "Europe/Berlin",
-            allDay = 0,
-        )
-        assertThat(values[CalendarContract.Events.EXDATE]).isEqualTo("20260715T080000Z")
-    }
-
-    @Test
-    fun `all-day exdate drop uses the date-only form`() {
-        // An all-day DTSTART sits at UTC midnight, so the date reads off UTC.
-        val values = buildOccurrenceExdateValues(
-            existingExdate = null,
-            occurrenceMillis = 1_784_073_600_000L, // 2026-07-15T00:00:00Z
-            dtStartMillis = 1_783_900_800_000L,
-            rrule = "FREQ=YEARLY",
-            duration = "P1D",
-            timezone = "UTC",
-            allDay = 1,
-        )
-        assertThat(values[CalendarContract.Events.EXDATE]).isEqualTo("20260715")
-        assertThat(values[CalendarContract.Events.ALL_DAY]).isEqualTo(1)
-    }
-
     // --- per-event colour ---
 
     @Test
@@ -409,4 +298,114 @@ class EventWriteMapperTest {
         assertThat(values).containsEntry(CalendarContract.Events.EVENT_COLOR, null)
         assertThat(values).containsEntry(CalendarContract.Events.EVENT_COLOR_KEY, null)
     }
+
+    // --- buildMovedMasterValues (calendar move: verbatim series copy) ---
+
+    private fun masterSnapshot(
+        isAllDay: Boolean = false,
+        dtStartMillis: Long = 1_781_164_800_000L,
+        dtEndMillis: Long? = 1_781_164_800_000L + 5_400_000L,
+        duration: String? = null,
+        rrule: String? = null,
+        rdate: String? = null,
+        exdate: String? = null,
+    ) = MasterEventSnapshot(
+        title = "Standup",
+        isAllDay = isAllDay,
+        dtStartMillis = dtStartMillis,
+        dtEndMillis = dtEndMillis,
+        duration = duration,
+        rrule = rrule,
+        rdate = rdate,
+        exdate = exdate,
+        timezone = "Europe/Berlin",
+        availability = CalendarContract.Events.AVAILABILITY_BUSY,
+        accessLevel = CalendarContract.Events.ACCESS_DEFAULT,
+        status = CalendarContract.Events.STATUS_CONFIRMED,
+        location = "Room 1",
+        description = "",
+    )
+
+    @Test
+    fun `moved one-off carries target calendar, uid and DTEND but no recurrence`() {
+        val values = buildMovedMasterValues(masterSnapshot(), targetCalendarId = 9L, uid = "u@calendula")
+        assertThat(values[CalendarContract.Events.CALENDAR_ID]).isEqualTo(9L)
+        assertThat(values[CalendarContract.Events.UID_2445]).isEqualTo("u@calendula")
+        assertThat(values[CalendarContract.Events.DTSTART]).isEqualTo(1_781_164_800_000L)
+        assertThat(values[CalendarContract.Events.DTEND]).isEqualTo(1_781_164_800_000L + 5_400_000L)
+        assertThat(values).doesNotContainKey(CalendarContract.Events.RRULE)
+        assertThat(values).doesNotContainKey(CalendarContract.Events.DURATION)
+        // Empty description clears explicitly; a raw/keyed colour is never copied
+        // (may be invalid on the target account — the copy inherits its colour).
+        assertThat(values).containsEntry(CalendarContract.Events.DESCRIPTION, null)
+        assertThat(values).doesNotContainKey(CalendarContract.Events.EVENT_COLOR)
+        assertThat(values).doesNotContainKey(CalendarContract.Events.EVENT_COLOR_KEY)
+    }
+
+    @Test
+    fun `moved series preserves the recurrence skeleton as RRULE plus DURATION`() {
+        val values = buildMovedMasterValues(
+            masterSnapshot(dtEndMillis = null, duration = "P5400S", rrule = "FREQ=WEEKLY", exdate = "20260618T080000Z"),
+            targetCalendarId = 9L,
+            uid = "u@calendula",
+        )
+        assertThat(values[CalendarContract.Events.RRULE]).isEqualTo("FREQ=WEEKLY")
+        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("P5400S")
+        assertThat(values[CalendarContract.Events.EXDATE]).isEqualTo("20260618T080000Z")
+        // Recurring rows never carry DTEND (the provider's invariant).
+        assertThat(values).doesNotContainKey(CalendarContract.Events.DTEND)
+    }
+
+    @Test
+    fun `moved series without a stored duration derives it from DTEND`() {
+        val values = buildMovedMasterValues(
+            masterSnapshot(duration = null, rrule = "FREQ=DAILY"),
+            targetCalendarId = 9L,
+            uid = "u@calendula",
+        )
+        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("P5400S")
+    }
+
+    // --- buildCopiedExceptionValues (calendar move: exception replay) ---
+
+    private fun exceptionSnapshot(
+        isCancelled: Boolean = false,
+        duration: String? = null,
+        // Occurrence starts one hour into the day and runs 30 minutes.
+        dtEndMillis: Long? = 1_781_164_800_000L + 3_600_000L + 1_800_000L,
+    ) = ExceptionRowSnapshot(
+        exceptionEventId = 42L,
+        originalInstanceMillis = 1_781_164_800_000L,
+        isCancelled = isCancelled,
+        status = if (isCancelled) CalendarContract.Events.STATUS_CANCELED else CalendarContract.Events.STATUS_CONFIRMED,
+        title = "Moved occurrence",
+        isAllDay = false,
+        dtStartMillis = 1_781_164_800_000L + 3_600_000L,
+        dtEndMillis = dtEndMillis,
+        duration = duration,
+        timezone = "Europe/Berlin",
+        availability = CalendarContract.Events.AVAILABILITY_BUSY,
+        accessLevel = CalendarContract.Events.ACCESS_DEFAULT,
+        location = "",
+        description = "Notes",
+    )
+
+    @Test
+    fun `copied modified occurrence carries the original instance and DURATION not DTEND`() {
+        val values = buildCopiedExceptionValues(exceptionSnapshot())
+        assertThat(values[CalendarContract.Events.ORIGINAL_INSTANCE_TIME])
+            .isEqualTo(1_781_164_800_000L)
+        assertThat(values[CalendarContract.Events.TITLE]).isEqualTo("Moved occurrence")
+        assertThat(values[CalendarContract.Events.DTSTART]).isEqualTo(1_781_164_800_000L + 3_600_000L)
+        // 30-minute occurrence derived from DTEND, written as DURATION only.
+        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("P1800S")
+        assertThat(values).doesNotContainKey(CalendarContract.Events.DTEND)
+        assertThat(values).containsEntry(CalendarContract.Events.EVENT_LOCATION, null)
+    }
+
+    @Test
+    fun `copied modified occurrence keeps a stored duration verbatim`() {
+        val values = buildCopiedExceptionValues(exceptionSnapshot(duration = "P900S", dtEndMillis = null))
+        assertThat(values[CalendarContract.Events.DURATION]).isEqualTo("P900S")
+    }
 }

app/src/test/java/de/jeanlucmakiola/calendula/data/calendar/FakeCalendarDataSource.kt

@@ -34,6 +34,13 @@ internal class FakeCalendarDataSource : CalendarDataSource {
 
     val insertedForms = mutableListOf<EventForm>()
     val updatedEvents = mutableListOf<Triple<Long, EventForm, EventForm>>()
+    data class MovedEvent(
+        val eventId: Long,
+        val targetCalendarId: Long,
+        val original: EventForm,
+        val updated: EventForm,
+    )
+    val movedEvents = mutableListOf<MovedEvent>()
     val updatedOccurrences = mutableListOf<Triple<Long, Long, EventForm>>()
     val updatedFromOccurrences = mutableListOf<Triple<Long, Long, EventForm>>()
     val deletedEventIds = mutableListOf<Long>()
@@ -116,6 +123,19 @@ internal class FakeCalendarDataSource : CalendarDataSource {
         allDayReminderTimes += allDayReminderTimeMinutes
     }
 
+    override fun moveEvent(
+        eventId: Long,
+        targetCalendarId: Long,
+        original: EventForm,
+        updated: EventForm,
+        allDayReminderTimeMinutes: Int,
+    ): Long {
+        writeError?.let { throw it }
+        movedEvents += MovedEvent(eventId, targetCalendarId, original, updated)
+        allDayReminderTimes += allDayReminderTimeMinutes
+        return nextInsertId
+    }
+
     override fun updateOccurrence(
         eventId: Long,
         beginMillis: Long,

app/src/test/java/de/jeanlucmakiola/calendula/domain/EventColorPaletteTest.kt

@@ -1,214 +0,0 @@
-package de.jeanlucmakiola.calendula.domain
-
-import com.google.common.truth.Truth.assertThat
-import org.junit.jupiter.api.Test
-
-class EventColorPaletteTest {
-
-    @Test
-    fun `empty palette stays empty`() {
-        assertThat(emptyList<EventColorOption>().curatedForPicker()).isEmpty()
-    }
-
-    @Test
-    fun `exact duplicate values collapse to the alphabetically first key`() {
-        val curated = listOf(
-            EventColorOption("cyan", 0xFF00FFFF.toInt()),
-            EventColorOption("aqua", 0xFF00FFFF.toInt()),
-            EventColorOption("red", 0xFFFF0000.toInt()),
-        ).curatedForPicker()
-
-        assertThat(curated.map { it.key }).containsExactly("aqua", "red")
-    }
-
-    @Test
-    fun `small palettes pass through whole, so Google's curated set is untouched`() {
-        // A Google-like palette: two dozen distinct hand-picked colours.
-        val palette = (0 until 24).map {
-            val hue = it * 15
-            EventColorOption("$it", hsvArgb(hue.toFloat()))
-        }
-
-        val curated = palette.curatedForPicker()
-
-        assertThat(curated).containsExactlyElementsIn(palette)
-    }
-
-    @Test
-    fun `oversized CSS3 palette thins to a pickable number of distinct swatches`() {
-        val curated = css3Palette().curatedForPicker()
-
-        // The whole point of #22: ~147 published colours become a single
-        // manageable grid instead of a full screen.
-        assertThat(curated.size).isAtLeast(30)
-        assertThat(curated.size).isAtMost(60)
-    }
-
-    @Test
-    fun `curation never invents colours or drops keys`() {
-        val source = css3Palette()
-        val curated = source.curatedForPicker()
-
-        assertThat(source).containsAtLeastElementsIn(curated)
-        assertThat(curated.map { it.argb }).containsNoDuplicates()
-    }
-
-    @Test
-    fun `spelling-alias pairs never both survive`() {
-        val keys = css3Palette().curatedForPicker().map { it.key }.toSet()
-
-        val aliasPairs = listOf(
-            "aqua" to "cyan",
-            "fuchsia" to "magenta",
-            "gray" to "grey",
-            "darkgray" to "darkgrey",
-            "dimgray" to "dimgrey",
-            "lightgray" to "lightgrey",
-            "slategray" to "slategrey",
-            "lightslategray" to "lightslategrey",
-            "darkslategray" to "darkslategrey",
-        )
-        aliasPairs.forEach { (a, b) ->
-            assertThat(keys.contains(a) && keys.contains(b)).isFalse()
-        }
-    }
-
-    @Test
-    fun `neutrals collapse to one painted tint instead of a run of look-alikes`() {
-        // Black and every gray paint as the same pale swatch (the picker pins
-        // lightness and floors saturation), so only one survives — no stranded
-        // run of look-alike "pinks" at the end of the grid (#22).
-        val curated = listOf(
-            EventColorOption("black", 0xFF000000.toInt()),
-            EventColorOption("gray", 0xFF808080.toInt()),
-            EventColorOption("darkgray", 0xFFA9A9A9.toInt()),
-            EventColorOption("blue", 0xFF0000FF.toInt()),
-            EventColorOption("red", 0xFFFF0000.toInt()),
-        ).curatedForPicker().map { it.key }
-
-        assertThat(curated).containsNoneOf("gray", "darkgray") // folded into black
-        assertThat(curated).containsAtLeast("black", "red", "blue")
-    }
-
-    @Test
-    fun `a dark and a light shade of one hue collapse to a single swatch`() {
-        // The picker paints every swatch at one fixed lightness, so navy and a
-        // mid blue are indistinguishable once painted — keep just one.
-        val curated = listOf(
-            EventColorOption("navy", 0xFF000080.toInt()),
-            EventColorOption("blue", 0xFF0000FF.toInt()),
-        ).curatedForPicker()
-
-        assertThat(curated).hasSize(1)
-    }
-
-    @Test
-    fun `the wheel is cut once, keeping each hue family contiguous`() {
-        // Twelve pure hues, deliberately shuffled; a small palette passes the
-        // thinning stage untouched so only the ordering is under test.
-        val shuffledHues = listOf(0, 300, 60, 180, 120, 240, 30, 330, 90, 210, 150, 270)
-        val curated = shuffledHues
-            .map { EventColorOption("$it", hsvArgb(it.toFloat())) }
-            .curatedForPicker()
-            .map { it.key.toInt() }
-
-        // A proper single-seam sweep around the wheel descends exactly once
-        // (at the seam). The old bucketed sort could scatter a family across
-        // both ends, producing extra descents.
-        val descents = curated.indices.count { i ->
-            curated[(i + 1) % curated.size] < curated[i]
-        }
-        assertThat(descents).isEqualTo(1)
-    }
-
-    @Test
-    fun `CSS3 survivors span the whole rainbow`() {
-        val keys = css3Palette().curatedForPicker().map { it.key }
-        fun has(vararg families: String) = keys.any { k -> families.any { k.contains(it) } }
-
-        // Which exact name represents a hue family depends on the vivid-first
-        // thinning, so assert each family survives, not a specific key.
-        assertThat(has("red", "crimson", "firebrick", "tomato", "maroon", "brown")).isTrue()
-        assertThat(has("orange", "gold", "goldenrod", "peru", "sienna", "salmon")).isTrue()
-        assertThat(has("green", "olive", "lime", "chartreuse", "forest", "sea")).isTrue()
-        assertThat(has("blue", "navy", "dodger", "steel", "royal", "sky", "aqua")).isTrue()
-        assertThat(has("violet", "purple", "magenta", "orchid", "fuchsia", "indigo", "plum")).isTrue()
-    }
-
-    private fun hsvArgb(hue: Float): Int {
-        val h = hue / 60f
-        val sector = h.toInt() % 6
-        val f = h - h.toInt()
-        val q = ((1 - f) * 255).toInt()
-        val t = (f * 255).toInt()
-        return when (sector) {
-            0 -> argb(255, t, 0)
-            1 -> argb(q, 255, 0)
-            2 -> argb(0, 255, t)
-            3 -> argb(0, q, 255)
-            4 -> argb(t, 0, 255)
-            else -> argb(255, 0, q)
-        }
-    }
-
-    private fun argb(r: Int, g: Int, b: Int): Int =
-        (0xFF shl 24) or (r shl 16) or (g shl 8) or b
-
-    /** The exact set ical4android/DAVx5 publishes: CSS3's 147 named colours. */
-    private fun css3Palette(): List<EventColorOption> = CSS3.map { (name, rgb) ->
-        EventColorOption(name, 0xFF000000.toInt() or rgb)
-    }
-
-    private val CSS3 = mapOf(
-        "aliceblue" to 0xF0F8FF, "antiquewhite" to 0xFAEBD7, "aqua" to 0x00FFFF,
-        "aquamarine" to 0x7FFFD4, "azure" to 0xF0FFFF, "beige" to 0xF5F5DC,
-        "bisque" to 0xFFE4C4, "black" to 0x000000, "blanchedalmond" to 0xFFEBCD,
-        "blue" to 0x0000FF, "blueviolet" to 0x8A2BE2, "brown" to 0xA52A2A,
-        "burlywood" to 0xDEB887, "cadetblue" to 0x5F9EA0, "chartreuse" to 0x7FFF00,
-        "chocolate" to 0xD2691E, "coral" to 0xFF7F50, "cornflowerblue" to 0x6495ED,
-        "cornsilk" to 0xFFF8DC, "crimson" to 0xDC143C, "cyan" to 0x00FFFF,
-        "darkblue" to 0x00008B, "darkcyan" to 0x008B8B, "darkgoldenrod" to 0xB8860B,
-        "darkgray" to 0xA9A9A9, "darkgreen" to 0x006400, "darkgrey" to 0xA9A9A9,
-        "darkkhaki" to 0xBDB76B, "darkmagenta" to 0x8B008B, "darkolivegreen" to 0x556B2F,
-        "darkorange" to 0xFF8C00, "darkorchid" to 0x9932CC, "darkred" to 0x8B0000,
-        "darksalmon" to 0xE9967A, "darkseagreen" to 0x8FBC8F, "darkslateblue" to 0x483D8B,
-        "darkslategray" to 0x2F4F4F, "darkslategrey" to 0x2F4F4F, "darkturquoise" to 0x00CED1,
-        "darkviolet" to 0x9400D3, "deeppink" to 0xFF1493, "deepskyblue" to 0x00BFFF,
-        "dimgray" to 0x696969, "dimgrey" to 0x696969, "dodgerblue" to 0x1E90FF,
-        "firebrick" to 0xB22222, "floralwhite" to 0xFFFAF0, "forestgreen" to 0x228B22,
-        "fuchsia" to 0xFF00FF, "gainsboro" to 0xDCDCDC, "ghostwhite" to 0xF8F8FF,
-        "gold" to 0xFFD700, "goldenrod" to 0xDAA520, "gray" to 0x808080,
-        "green" to 0x008000, "greenyellow" to 0xADFF2F, "grey" to 0x808080,
-        "honeydew" to 0xF0FFF0, "hotpink" to 0xFF69B4, "indianred" to 0xCD5C5C,
-        "indigo" to 0x4B0082, "ivory" to 0xFFFFF0, "khaki" to 0xF0E68C,
-        "lavender" to 0xE6E6FA, "lavenderblush" to 0xFFF0F5, "lawngreen" to 0x7CFC00,
-        "lemonchiffon" to 0xFFFACD, "lightblue" to 0xADD8E6, "lightcoral" to 0xF08080,
-        "lightcyan" to 0xE0FFFF, "lightgoldenrodyellow" to 0xFAFAD2, "lightgray" to 0xD3D3D3,
-        "lightgreen" to 0x90EE90, "lightgrey" to 0xD3D3D3, "lightpink" to 0xFFB6C1,
-        "lightsalmon" to 0xFFA07A, "lightseagreen" to 0x20B2AA, "lightskyblue" to 0x87CEFA,
-        "lightslategray" to 0x778899, "lightslategrey" to 0x778899, "lightsteelblue" to 0xB0C4DE,
-        "lightyellow" to 0xFFFFE0, "lime" to 0x00FF00, "limegreen" to 0x32CD32,
-        "linen" to 0xFAF0E6, "magenta" to 0xFF00FF, "maroon" to 0x800000,
-        "mediumaquamarine" to 0x66CDAA, "mediumblue" to 0x0000CD, "mediumorchid" to 0xBA55D3,
-        "mediumpurple" to 0x9370DB, "mediumseagreen" to 0x3CB371, "mediumslateblue" to 0x7B68EE,
-        "mediumspringgreen" to 0x00FA9A, "mediumturquoise" to 0x48D1CC,
-        "mediumvioletred" to 0xC71585, "midnightblue" to 0x191970, "mintcream" to 0xF5FFFA,
-        "mistyrose" to 0xFFE4E1, "moccasin" to 0xFFE4B5, "navajowhite" to 0xFFDEAD,
-        "navy" to 0x000080, "oldlace" to 0xFDF5E6, "olive" to 0x808000,
-        "olivedrab" to 0x6B8E23, "orange" to 0xFFA500, "orangered" to 0xFF4500,
-        "orchid" to 0xDA70D6, "palegoldenrod" to 0xEEE8AA, "palegreen" to 0x98FB98,
-        "paleturquoise" to 0xAFEEEE, "palevioletred" to 0xDB7093, "papayawhip" to 0xFFEFD5,
-        "peachpuff" to 0xFFDAB9, "peru" to 0xCD853F, "pink" to 0xFFC0CB,
-        "plum" to 0xDDA0DD, "powderblue" to 0xB0E0E6, "purple" to 0x800080,
-        "red" to 0xFF0000, "rosybrown" to 0xBC8F8F, "royalblue" to 0x4169E1,
-        "saddlebrown" to 0x8B4513, "salmon" to 0xFA8072, "sandybrown" to 0xF4A460,
-        "seagreen" to 0x2E8B57, "seashell" to 0xFFF5EE, "sienna" to 0xA0522D,
-        "silver" to 0xC0C0C0, "skyblue" to 0x87CEEB, "slateblue" to 0x6A5ACD,
-        "slategray" to 0x708090, "slategrey" to 0x708090, "snow" to 0xFFFAFA,
-        "springgreen" to 0x00FF7F, "steelblue" to 0x4682B4, "tan" to 0xD2B48C,
-        "teal" to 0x008080, "thistle" to 0xD8BFD8, "tomato" to 0xFF6347,
-        "turquoise" to 0x40E0D0, "violet" to 0xEE82EE, "wheat" to 0xF5DEB3,
-        "white" to 0xFFFFFF, "whitesmoke" to 0xF5F5F5, "yellow" to 0xFFFF00,
-        "yellowgreen" to 0x9ACD32,
-    )
-}

app/src/test/java/de/jeanlucmakiola/calendula/ui/edit/EventEditViewModelTest.kt

@@ -0,0 +1,158 @@
+package de.jeanlucmakiola.calendula.ui.edit
+
+import androidx.datastore.core.DataStore
+import androidx.datastore.preferences.core.PreferenceDataStoreFactory
+import androidx.datastore.preferences.core.Preferences
+import com.google.common.truth.Truth.assertThat
+import de.jeanlucmakiola.calendula.data.calendar.CalendarRepositoryImpl
+import de.jeanlucmakiola.calendula.data.calendar.FakeCalendarDataSource
+import de.jeanlucmakiola.calendula.data.prefs.CalendarPrefs
+import de.jeanlucmakiola.calendula.data.prefs.SettingsPrefs
+import de.jeanlucmakiola.calendula.domain.CalendarSource
+import de.jeanlucmakiola.calendula.domain.EventDetail
+import de.jeanlucmakiola.calendula.domain.EventInstance
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.test.UnconfinedTestDispatcher
+import kotlinx.coroutines.test.advanceUntilIdle
+import kotlinx.coroutines.test.resetMain
+import kotlinx.coroutines.test.runTest
+import kotlinx.coroutines.test.setMain
+import kotlinx.coroutines.Dispatchers
+import org.junit.jupiter.api.AfterEach
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.io.TempDir
+import java.nio.file.Path
+import kotlin.time.Instant
+
+/**
+ * Focuses on the save-time branch that decides between an in-place update and a
+ * calendar *move* (copy+delete). The provider-level move itself is verified
+ * on-device; here the fake records which repository call the ViewModel chose.
+ */
+@OptIn(ExperimentalCoroutinesApi::class)
+class EventEditViewModelTest {
+
+    private val dispatcher = UnconfinedTestDispatcher()
+
+    @BeforeEach fun setUp() = Dispatchers.setMain(dispatcher)
+    @AfterEach fun tearDown() = Dispatchers.resetMain()
+
+    private val beginMillis = 1_781_164_800_000L
+    private val endMillis = beginMillis + 3_600_000L
+
+    private fun cal(id: Long): CalendarSource = CalendarSource(
+        id = id, displayName = "Cal $id", accountName = "acc@local", accountType = "LOCAL",
+        color = 0xFF112233.toInt(), isVisibleInSystem = true, canModifyContents = true,
+    )
+
+    private fun detail(calendarId: Long, rrule: String? = null): EventDetail = EventDetail(
+        instance = EventInstance(
+            instanceId = 42L, eventId = 42L, calendarId = calendarId, title = "Standup",
+            start = Instant.fromEpochMilliseconds(beginMillis),
+            end = Instant.fromEpochMilliseconds(endMillis),
+            isAllDay = false, color = 0xFF000000.toInt(), location = null,
+        ),
+        description = null, organizer = null, attendees = emptyList(), rrule = rrule,
+    )
+
+    // Pin the DataStore's scope to the test dispatcher so a settings write (e.g.
+    // last-used calendar) completes under advanceUntilIdle instead of on a real
+    // IO thread the virtual clock can't observe.
+    private fun prefs(tempDir: Path): CalendarPrefs = CalendarPrefs(
+        PreferenceDataStoreFactory.create(
+            scope = CoroutineScope(dispatcher),
+            produceFile = { tempDir.resolve("vm_prefs.preferences_pb").toFile() },
+        ),
+    )
+
+    private fun settings(tempDir: Path): SettingsPrefs = SettingsPrefs(
+        PreferenceDataStoreFactory.create(
+            scope = CoroutineScope(dispatcher),
+            produceFile = { tempDir.resolve("vm_settings.preferences_pb").toFile() },
+        ),
+    )
+
+    private fun viewModel(
+        tempDir: Path,
+        fake: FakeCalendarDataSource,
+    ): EventEditViewModel {
+        val p = prefs(tempDir)
+        val s = settings(tempDir)
+        val repo = CalendarRepositoryImpl(fake, p, s, dispatcher as CoroutineDispatcher)
+        return EventEditViewModel(repo, p, s, dispatcher)
+    }
+
+    /** Keep [EventEditViewModel.state] hot so it computes while the test drives it. */
+    private fun CoroutineScope.activate(vm: EventEditViewModel): Job = launch { vm.state.collect {} }
+
+    @Test
+    fun `changing the calendar routes the save through a move, not an update`(
+        @TempDir tempDir: Path,
+    ) = runTest(dispatcher) {
+        val fake = FakeCalendarDataSource().apply {
+            calendarsResult = listOf(cal(1L), cal(2L))
+            eventDetailResult = { detail(calendarId = 1L) }
+            nextInsertId = 99L
+        }
+        val vm = viewModel(tempDir, fake)
+        val job = activate(vm)
+
+        vm.openForEdit(eventId = 42L, beginMillis = beginMillis, endMillis = endMillis)
+        vm.setCalendar(2L)
+        vm.save()
+        advanceUntilIdle()
+
+        assertThat(fake.movedEvents).hasSize(1)
+        assertThat(fake.movedEvents.single().eventId).isEqualTo(42L)
+        assertThat(fake.movedEvents.single().targetCalendarId).isEqualTo(2L)
+        assertThat(fake.updatedEvents).isEmpty()
+        assertThat(vm.state.value?.saveState).isEqualTo(SaveUiState.Saved)
+        job.cancel()
+    }
+
+    @Test
+    fun `moving a recurring event skips the scope dialog`(@TempDir tempDir: Path) = runTest(dispatcher) {
+        val fake = FakeCalendarDataSource().apply {
+            calendarsResult = listOf(cal(1L), cal(2L))
+            eventDetailResult = { detail(calendarId = 1L, rrule = "FREQ=WEEKLY") }
+        }
+        val vm = viewModel(tempDir, fake)
+        val job = activate(vm)
+
+        vm.openForEdit(eventId = 42L, beginMillis = beginMillis, endMillis = endMillis)
+        vm.setCalendar(2L)
+        vm.save()
+        advanceUntilIdle()
+
+        // No AwaitingScope park: a move is inherently whole-series.
+        assertThat(vm.state.value?.saveState).isEqualTo(SaveUiState.Saved)
+        assertThat(fake.movedEvents).hasSize(1)
+        job.cancel()
+    }
+
+    @Test
+    fun `editing a recurring event without moving still asks for the scope`(
+        @TempDir tempDir: Path,
+    ) = runTest(dispatcher) {
+        val fake = FakeCalendarDataSource().apply {
+            calendarsResult = listOf(cal(1L), cal(2L))
+            eventDetailResult = { detail(calendarId = 1L, rrule = "FREQ=WEEKLY") }
+        }
+        val vm = viewModel(tempDir, fake)
+        val job = activate(vm)
+
+        vm.openForEdit(eventId = 42L, beginMillis = beginMillis, endMillis = endMillis)
+        vm.setTitle("Renamed")
+        vm.save()
+        advanceUntilIdle()
+
+        assertThat(vm.state.value?.saveState).isEqualTo(SaveUiState.AwaitingScope)
+        assertThat(fake.movedEvents).isEmpty()
+        job.cancel()
+    }
+}

fastlane/metadata/android/en-US/changelogs/21401.txt

@@ -1,34 +0,0 @@
-### Fixed
-- Deleting one occurrence of a repeating event no longer breaks the series.
-  Choosing "This event" when deleting an occurrence of a recurring event could
-  wipe out every *other* occurrence while leaving the one you deleted behind as
-  a stale, still-tappable ghost — and deleting it again brought the series back.
-  A single-occurrence delete now removes exactly that occurrence and leaves the
-  rest of the series untouched, and the deleted occurrence disappears from the
-  grid straight away. This holds on every kind of calendar, including the
-  on-device ones Calendula keeps for contact birthdays and anniversaries, where
-  the series is a yearly repeat. Thanks to @moonj for the report ([#47]).
-- Tapping an event in a third-party widget opens it in Calendula. v2.13.1 taught
-  Calendula to answer the "new event" hand-off from other apps and widgets; now
-  it also answers the "open this event" one, so tapping an existing event in a
-  widget such as Todo Agenda offers Calendula and lands on that event's details.
-  Thanks to @bushrang3r for the report ([#48]).
-- Events created from other apps get your default reminder. An event handed over
-  by another app or widget — Google Maps' "add to calendar", the Todo Agenda
-  widget's "+" — opened with no reminder at all, ignoring the default set in
-  Settings. It now starts with your default reminder, the same as an event you
-  create in Calendula. An event opened from an `.ics` file is treated differently,
-  because the file has its own say: Calendula keeps whatever reminders it carries
-  (including none at all) and asks you once whether to apply your default instead
-  — it never quietly overrides the file. If you have no default set, it doesn't
-  ask ([#49]).
-- A tidy colour picker on CalDAV calendars. For calendars synced by a CalDAV
-  app (such as DAVx5), the event colour picker showed every colour the account
-  publishes — nearly 150 swatches in alphabetical order, many of them
-  duplicates or near-identical shades. The picker now shows only visually
-  distinct colours, arranged as a rainbow; near-duplicate shades and the
-  washed-out neutrals are folded away so no two swatches look alike. Picked
-  colours still sync exactly as before, and calendars with hand-picked
-  palettes (like Google's) are unaffected. Thanks to @ptab for the report
-  ([#22]).
-