docs(fdroid): warn against premature submodules:true in official recipe

fdroidserver's initsubmodules() raises NoSubmodulesException on any build
entry whose commit lacks .gitmodules, so `submodules: true` is a hard build
failure on every release before the floret-kit submodule lands (verified
2026-06-28 against fdroiddata MR !41553). Document that it must be added
only in the recipe entry targeting the first release that ships the
floret-kit composite build.

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

CHANGELOG.md

@@ -5,6 +5,25 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.11.2] — 2026-06-28
+
+### Added
+- Jump straight to typing a title. When you start a new event, Calendula now puts
+  the cursor in the title field and opens the keyboard right away, so you can type
+  the name without an extra tap. It's on by default and only affects creating an
+  event — editing never grabs focus — and a new **Focus title on new event**
+  switch (Settings → New event form) turns it off. Thanks to @abrossimow for the
+  suggestion ([#10]).
+
+## [2.11.1] — 2026-06-28
+
+### Fixed
+- Calendula can now be set as your default calendar app. It registers the
+  calendar-app intent filters the system uses, so it appears in the chooser when
+  you tap a date in a launcher or clock — and opening one takes you straight to
+  that day. Android has no way for an app to make itself the default, so you pick
+  it once from the system picker. Thanks to @abrossimow for the report ([#9]).
+
 ## [2.11.0] — 2026-06-27
 
 ### Added
@@ -685,3 +704,5 @@ automatically, with zero telemetry and no internet permission.
 [#6]: https://codeberg.org/jlmakiola/calendula/issues/6
 [#7]: https://codeberg.org/jlmakiola/calendula/issues/7
 [#8]: https://codeberg.org/jlmakiola/calendula/issues/8
+[#9]: https://codeberg.org/jlmakiola/calendula/issues/9
+[#10]: https://codeberg.org/jlmakiola/calendula/issues/10

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 = 21100
-        versionName = "2.11.0"
+        versionCode = 21102
+        versionName = "2.11.2"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/AndroidManifest.xml

@@ -59,6 +59,35 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
 
+            <!-- Be selectable as the system calendar app. Android has no API for
+                 an app to make itself the default, so registering the filters
+                 launchers and the OS use is what lets the user pick Calendula
+                 from the system chooser when a date action fires (issue #9).
+                 APP_CALENDAR is the "open the calendar app" action; the VIEW
+                 filters below catch a tapped date. -->
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.APP_CALENDAR" />
+            </intent-filter>
+            <!-- A launcher/clock date tap fires ACTION_VIEW on the provider's
+                 time Uri (content://com.android.calendar/time/<epochMillis>);
+                 some surfaces use the time/epoch mime type. We open the day view
+                 on that date (MainActivity.calendarTimeDateOrNull). -->
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data
+                    android:scheme="content"
+                    android:host="com.android.calendar"
+                    android:pathPrefix="/time" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="time/epoch" />
+            </intent-filter>
+
             <!-- Open a .ics file (file manager / email attachment / browser). -->
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />

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

@@ -35,6 +35,9 @@ import de.jeanlucmakiola.calendula.ui.crash.submitCrashReport
 import de.jeanlucmakiola.calendula.ui.settings.SettingsViewModel
 import de.jeanlucmakiola.calendula.ui.theme.CalendulaTheme
 import kotlinx.datetime.LocalDate
+import kotlinx.datetime.TimeZone
+import kotlinx.datetime.toLocalDateTime
+import kotlin.time.Instant
 
 @AndroidEntryPoint
 class MainActivity : AppCompatActivity() {
@@ -156,10 +159,33 @@ class MainActivity : AppCompatActivity() {
             Intent.ACTION_SEND -> IntentCompat.getParcelableExtra(this, Intent.EXTRA_STREAM, Uri::class.java)
             else -> null
         } ?: return null
+        // The calendar "view time" Uri (a date tap) is also ACTION_VIEW/content;
+        // it's a navigation, not a file to import, so [navRequestOrNull] owns it.
+        if (uri.host == CALENDAR_PROVIDER_HOST) return null
         return uri.takeIf { it.scheme == "content" || it.scheme == "file" }
     }
 
+    /**
+     * The date a launcher/clock date tap points at, parsed from the AOSP calendar
+     * "view time" intent: ACTION_VIEW on `content://com.android.calendar/time/
+     * <epochMillis>`. Null for any other intent. The matching manifest filter is
+     * what lets users pick Calendula from the system calendar chooser (issue #9).
+     */
+    private fun Intent.calendarTimeDateOrNull(): LocalDate? {
+        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() != "time") return null
+        val millis = segments.getOrNull(1)?.toLongOrNull() ?: return null
+        return Instant.fromEpochMilliseconds(millis)
+            .toLocalDateTime(TimeZone.currentSystemDefault()).date
+    }
+
     private fun Intent.navRequestOrNull(): WidgetNavRequest? {
+        // An external date tap (launcher/clock) has no widget source, so it opens
+        // the day view rooted over the default home view (OpenDate source = null).
+        calendarTimeDateOrNull()?.let { return WidgetNavRequest.OpenDate(it.toString(), source = null) }
         val source = sourceViewOrNull()
         val eventId = getLongExtra(EXTRA_EVENT_ID, -1L)
         return when {
@@ -201,6 +227,10 @@ class MainActivity : AppCompatActivity() {
     }
 
     companion object {
+        // The calendar provider's authority/host. A date tap arrives as
+        // ACTION_VIEW on content://com.android.calendar/time/<epochMillis>.
+        private const val CALENDAR_PROVIDER_HOST = "com.android.calendar"
+
         private const val EXTRA_EVENT_ID = "de.jeanlucmakiola.calendula.extra.EVENT_ID"
         private const val EXTRA_BEGIN_MILLIS = "de.jeanlucmakiola.calendula.extra.BEGIN"
         private const val EXTRA_END_MILLIS = "de.jeanlucmakiola.calendula.extra.END"

app/src/main/java/de/jeanlucmakiola/calendula/data/prefs/SettingsPrefs.kt

@@ -182,6 +182,20 @@ class SettingsPrefs @Inject constructor(
         }
     }
 
+    /**
+     * Whether opening the new-event form focuses the title field and raises the
+     * keyboard straight away (issue #10). Default ON — a new event almost always
+     * gets a title, so this saves a tap; users who set the time/calendar first
+     * can turn it off. Only the create form auto-focuses — editing never does.
+     */
+    val autofocusEventTitle: Flow<Boolean> = store.data.map { prefs ->
+        prefs[AUTOFOCUS_EVENT_TITLE_KEY] ?: true
+    }
+
+    suspend fun setAutofocusEventTitle(enabled: Boolean) {
+        store.edit { it[AUTOFOCUS_EVENT_TITLE_KEY] = enabled }
+    }
+
     /**
      * Whether Calendula posts reminder notifications (v1.4). Defaults to ON —
      * for users whose only calendar app this is, reminders are essential; the
@@ -392,6 +406,7 @@ class SettingsPrefs @Inject constructor(
         internal val SHOW_HOUR_LINES_KEY = booleanPreferencesKey("show_hour_lines")
         internal val DEFAULT_VIEW_KEY = stringPreferencesKey("default_view")
         internal val FORM_FIELDS_KEY = stringPreferencesKey("event_form_default_fields")
+        internal val AUTOFOCUS_EVENT_TITLE_KEY = booleanPreferencesKey("autofocus_event_title")
         internal val REMINDERS_ENABLED_KEY = booleanPreferencesKey("reminders_enabled")
         internal val REMINDER_ONBOARDING_KEY = booleanPreferencesKey("reminder_onboarding_done")
         internal val ALLOW_COLOR_UNSUPPORTED_KEY =

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

@@ -196,7 +196,9 @@ fun CalendarHost(
                 dismissCoveringOverlays()
                 createDateIso = null
                 pendingDayIso = req.dateIso
-                viewStack = viewBaseStack(defaultView, req.source).drillToDay()
+                // No widget source (an external date tap) roots over the default
+                // home view, so backing out of the day returns home then exits.
+                viewStack = viewBaseStack(defaultView, req.source ?: defaultView).drillToDay()
                 onWidgetNavConsumed()
             }
             is WidgetNavRequest.OpenEvent -> {

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

@@ -13,8 +13,13 @@ import de.jeanlucmakiola.calendula.ui.common.CalendarView
  * detail-key channel and leave the base view untouched.)
  */
 sealed interface WidgetNavRequest {
-    /** Open the day view anchored on [dateIso] (an ISO `yyyy-MM-dd` date), over [source]. */
-    data class OpenDate(val dateIso: String, val source: CalendarView) : WidgetNavRequest
+    /**
+     * Open the day view anchored on [dateIso] (an ISO `yyyy-MM-dd` date), over
+     * [source]. A null [source] means the request came from outside the app (a
+     * launcher/clock date tap, issue #9) rather than a widget, so it roots over
+     * the default home view instead of a widget's view.
+     */
+    data class OpenDate(val dateIso: String, val source: CalendarView?) : WidgetNavRequest
 
     /** Open one occurrence's detail (an agenda-widget event tap), over [source]. */
     data class OpenEvent(

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

@@ -81,6 +81,8 @@ 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.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.SolidColor
 import androidx.compose.ui.graphics.isSpecified
@@ -479,6 +481,17 @@ private fun EventEditContent(
         ?: MaterialTheme.colorScheme.primary
     val gap = 12.dp
 
+    // Issue #10: on a fresh create form (setting on, nothing typed yet) focus the
+    // title and raise the keyboard so the user can type straight away. Keyed on
+    // Unit so it runs once per open — not on every keystroke — and guarded so
+    // editing or an imported/prefilled form never grabs focus.
+    val titleFocusRequester = remember { FocusRequester() }
+    LaunchedEffect(Unit) {
+        if (state.autofocusTitle && !state.isEditing && form.title.isBlank()) {
+            runCatching { titleFocusRequester.requestFocus() }
+        }
+    }
+
     // Per-event colour applicability for the resolved calendar:
     //  - palette calendars (Google, …) and local calendars always support it;
     //  - synced calendars with no palette only when the user opted in, and even
@@ -506,6 +519,10 @@ private fun EventEditContent(
             placeholder = stringResource(R.string.event_edit_title_hint),
             textStyle = MaterialTheme.typography.headlineMedium
                 .copy(fontWeight = FontWeight.SemiBold),
+            modifier = Modifier
+                .fillMaxWidth()
+                .padding(vertical = 4.dp)
+                .focusRequester(titleFocusRequester),
         )
         Spacer(Modifier.height(10.dp))
         Box(

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

@@ -29,6 +29,12 @@ data class EventEditUiState(
     val hiddenFields: List<EventFormField> = emptyList(),
     /** True while editing an existing event (the calendar is then fixed). */
     val isEditing: Boolean = false,
+    /**
+     * Whether to focus the title and raise the keyboard when this is a fresh
+     * create form (issue #10). Mirrors the settings flag; the screen only acts
+     * on it for a new event with an empty title, never when editing/importing.
+     */
+    val autofocusTitle: Boolean = true,
     /**
      * True while an edit changed the recurrence rule — the save-scope dialog
      * then drops "only this event" (an exception row can't carry a rule).

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

@@ -119,6 +119,7 @@ class EventEditViewModel @Inject constructor(
         val lastUsed: Long?,
         val defaultFields: Set<EventFormField>,
         val allowColorOnUnsupported: Boolean,
+        val autofocusTitle: Boolean,
     )
 
     /**
@@ -160,6 +161,7 @@ class EventEditViewModel @Inject constructor(
             prefs.lastUsedCalendarId,
             settingsPrefs.defaultFormFields,
             settingsPrefs.allowColorOnUnsupportedCalendars,
+            settingsPrefs.autofocusEventTitle,
             ::ExternalInputs,
         ).flowOn(io),
         colorPalette,
@@ -178,6 +180,7 @@ class EventEditViewModel @Inject constructor(
             visibleFields = visibleFields,
             hiddenFields = (EventFormField.entries.toSet() - visibleFields).sorted(),
             isEditing = local.editTarget != null,
+            autofocusTitle = external.autofocusTitle,
             // A modified-occurrence exception can't carry its own rule, so
             // the scope dialog drops "only this event" after a rule change.
             recurrenceChanged = local.editTarget != null &&

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

@@ -45,6 +45,7 @@ import androidx.compose.material.icons.filled.ExpandLess
 import androidx.compose.material.icons.filled.ExpandMore
 import androidx.compose.material.icons.filled.Favorite
 import androidx.compose.material.icons.filled.Gavel
+import androidx.compose.material.icons.filled.Keyboard
 import androidx.compose.material.icons.filled.Language
 import androidx.compose.material.icons.filled.Notifications
 import androidx.compose.material.icons.filled.Palette
@@ -673,6 +674,30 @@ private fun EventFormScreen(
             )
         }
 
+        // Auto-focus the title on a new event (issue #10) — on by default, since
+        // most events get a title; raising the keyboard saves a tap. Off lets you
+        // set the time/calendar first without the keyboard in the way.
+        Spacer(Modifier.height(24.dp))
+        GroupedRow(
+            title = stringResource(R.string.settings_autofocus_title),
+            summary = stringResource(R.string.settings_autofocus_title_hint),
+            position = Position.Alone,
+            leading = {
+                Icon(
+                    imageVector = Icons.Default.Keyboard,
+                    contentDescription = null,
+                    tint = MaterialTheme.colorScheme.onSurfaceVariant,
+                )
+            },
+            trailing = {
+                Switch(
+                    checked = state.autofocusEventTitle,
+                    onCheckedChange = { viewModel.setAutofocusEventTitle(it) },
+                )
+            },
+            onClick = { viewModel.setAutofocusEventTitle(!state.autofocusEventTitle) },
+        )
+
         // Per-event colour on calendars that publish no colour set (some
         // CalDAV) — off by default, with the honest caveat that the colour may
         // not survive their next sync. Local and palette calendars ignore it.

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

@@ -34,6 +34,8 @@ data class SettingsUiState(
     val defaultView: CalendarView = CalendarView.Week,
     /** Optional event-form fields shown by default (rest behind "more fields"). */
     val defaultFormFields: Set<EventFormField> = SettingsPrefs.DEFAULT_FORM_FIELDS,
+    /** Whether the new-event form auto-focuses the title and shows the keyboard (#10). */
+    val autofocusEventTitle: Boolean = true,
     /** Whether Calendula posts reminder notifications (v1.4). */
     val remindersEnabled: Boolean = true,
     /**

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

@@ -96,15 +96,20 @@ class SettingsViewModel @Inject constructor(
             ) { view, screenRange, widgetRange, timeFormat, showHourLines ->
                 ViewSettings(view, screenRange, widgetRange, timeFormat, showHourLines)
             },
-            prefs.agendaShowRangeBar,
-        ) { base, defaults, overrides, views, showRangeBar ->
+            combine(
+                prefs.agendaShowRangeBar,
+                prefs.autofocusEventTitle,
+                ::MiscSettings,
+            ),
+        ) { base, defaults, overrides, views, misc ->
             base.copy(
                 defaultView = views.defaultView,
                 agendaScreenRange = views.agendaScreenRange,
                 agendaWidgetRange = views.agendaWidgetRange,
                 timeFormat = views.timeFormat,
                 showHourLines = views.showHourLines,
-                agendaShowRangeBar = showRangeBar,
+                agendaShowRangeBar = misc.showRangeBar,
+                autofocusEventTitle = misc.autofocusEventTitle,
                 allowColorOnUnsupportedCalendars = defaults.allowColor,
                 defaultReminderMinutes = defaults.defaultReminder,
                 defaultAllDayReminderMinutes = defaults.allDayReminder,
@@ -148,6 +153,11 @@ class SettingsViewModel @Inject constructor(
         val showHourLines: Boolean,
     )
 
+    private data class MiscSettings(
+        val showRangeBar: Boolean,
+        val autofocusEventTitle: Boolean,
+    )
+
     fun setThemeMode(mode: ThemeMode) {
         viewModelScope.launch { prefs.setThemeMode(mode) }
     }
@@ -213,6 +223,10 @@ class SettingsViewModel @Inject constructor(
         viewModelScope.launch { prefs.setRemindersEnabled(enabled) }
     }
 
+    fun setAutofocusEventTitle(enabled: Boolean) {
+        viewModelScope.launch { prefs.setAutofocusEventTitle(enabled) }
+    }
+
     fun setDefaultReminderMinutes(minutes: Int?) {
         viewModelScope.launch { prefs.setDefaultReminderMinutes(minutes) }
     }

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

@@ -302,6 +302,8 @@
     </plurals>
     <string name="settings_section_event_form">Termin-Formular</string>
     <string name="settings_form_fields_hint">Standardmäßig angezeigte Felder — alles Weitere liegt hinter \"Weitere Felder\"</string>
+    <string name="settings_autofocus_title">Titel bei neuem Termin fokussieren</string>
+    <string name="settings_autofocus_title_hint">Beim Anlegen eines neuen Termins den Cursor direkt ins Titelfeld setzen und die Tastatur öffnen.</string>
     <string name="settings_color_unsupported">Farben auf nicht unterstützten Kalendern erlauben</string>
     <string name="settings_color_unsupported_hint">Manche Kalender (z. B. bestimmte CalDAV) stellen keine Farbpalette bereit; eine eigene Terminfarbe wird dort bei der nächsten Synchronisierung unter Umständen verworfen oder überschrieben. Das ist eine Einschränkung dieser Kalender und kann von Calendula nicht behoben werden.</string>
     <string name="settings_section_notifications">Benachrichtigungen</string>

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

@@ -303,6 +303,8 @@
     </plurals>
     <string name="settings_section_event_form">New event form</string>
     <string name="settings_form_fields_hint">Fields shown by default — everything else sits behind \"More fields\"</string>
+    <string name="settings_autofocus_title">Focus title on new event</string>
+    <string name="settings_autofocus_title_hint">When you start a new event, place the cursor in the title field and open the keyboard right away.</string>
     <string name="settings_color_unsupported">Allow colors on unsupported calendars</string>
     <string name="settings_color_unsupported_hint">Some calendars (e.g. certain CalDAV) publish no color set; a custom event color may be dropped or overwritten on their next sync. That\'s a limitation of those calendars, not something Calendula can fix.</string>
     <string name="settings_section_notifications">Notifications</string>

app/src/test/java/de/jeanlucmakiola/calendula/data/prefs/SettingsPrefsTest.kt

@@ -90,6 +90,14 @@ class SettingsPrefsTest {
         assertThat(prefs.showHourLines.first()).isTrue()
     }
 
+    @Test
+    fun `autofocus event title defaults on and round-trips`(@TempDir tempDir: Path) = runTest {
+        val prefs = SettingsPrefs(newDataStore(tempDir))
+        assertThat(prefs.autofocusEventTitle.first()).isTrue()
+        prefs.setAutofocusEventTitle(false)
+        assertThat(prefs.autofocusEventTitle.first()).isFalse()
+    }
+
     @Test
     fun `agenda ranges default to month and round-trip independently`(@TempDir tempDir: Path) = runTest {
         val prefs = SettingsPrefs(newDataStore(tempDir))

docs/fdroid-official/de.jeanlucmakiola.calendula.yml

@@ -48,6 +48,19 @@ Builds:
     # No NDK / no flavors. The release buildType applies a signingConfig only
     # when key.properties exists; on the buildserver it does not, so this
     # produces the unsigned APK F-Droid compares against our binary.
+    #
+    # DO NOT add `submodules: true` here ahead of need. fdroidserver's
+    # initsubmodules() RAISES NoSubmodulesException ("No git submodules
+    # available") on any build entry whose commit has no `.gitmodules`, so
+    # `submodules: true` is a HARD BUILD FAILURE — not a no-op — on every
+    # release before the floret-kit submodule lands. (Verified 2026-06-28: it
+    # broke the fdroid build / checkupdates / check-source-code jobs on
+    # fdroiddata MR !41553; confirmed locally with the fdroidserver-master
+    # fetchsrclibs path.) Add `submodules: true` ONLY in the recipe entry that
+    # targets the FIRST release actually shipping the `floret-kit` git submodule
+    # (composite build via `includeBuild("floret-kit")`, core-time refactor on
+    # branch `chore/floret-kit-core-time`) — and only there. From that entry on
+    # it becomes the AutoUpdateMode template and propagates to future builds.
 
 # SHA-256 of our app signing certificate (public; embedded in every published
 # APK). Locks F-Droid to publish only binaries signed with our key.

fastlane/metadata/android/en-US/changelogs/21101.txt

@@ -0,0 +1,6 @@
+### Fixed
+- Calendula can now be set as your default calendar app. It registers the
+  calendar-app intent filters the system uses, so it appears in the chooser when
+  you tap a date in a launcher or clock — and opening one takes you straight to
+  that day. Android has no way for an app to make itself the default, so you pick
+  it once from the system picker. Thanks to @abrossimow for the report ([#9]).

fastlane/metadata/android/en-US/changelogs/21102.txt

@@ -0,0 +1,7 @@
+### Added
+- Jump straight to typing a title. When you start a new event, Calendula now puts
+  the cursor in the title field and opens the keyboard right away, so you can type
+  the name without an extra tap. It's on by default and only affects creating an
+  event — editing never grabs focus — and a new **Focus title on new event**
+  switch (Settings → New event form) turns it off. Thanks to @abrossimow for the
+  suggestion ([#10]).