feat(edit): form redesign, optional fields, OptionCard dialogs, expressive motion

Post-v1.2.0 design iteration on the event form, reviewed slice by slice
on-device:

- Form rebuilt on the detail screen's card system: tonal EditCards with
  gutter icons (centred on the first row, top-aligned for multiline),
  borderless inline fields (placeholders at half opacity), calendar-coloured
  title accent, no dividers, bare top bar
- Optional sections (location, description, reminders, availability,
  visibility) with per-user defaults in Settings ("New event form" toggles);
  hidden ones unfold via a "More fields" picker dialog
- Reminders: stacked rows + full-width borderless add; two-step picker
  (one-tap presets, then custom amount + minutes/hours/days/weeks dropdown);
  written as METHOD_ALERT Reminders rows. Availability busy/free segmented
  toggle; visibility selector with per-level icons
- OptionCard (ui/common) is now the app-wide selection-dialog standard;
  calendar picker, visibility, more-fields, reminder presets and the
  recurring-delete chooser all use it — radio-row dialogs removed
- MaterialExpressiveTheme with MotionScheme.standard() (expressive bounce
  felt overdone); FAB stack + field reveals animate on theme springs;
  jump-to-today slides toward today's actual direction
- IME: adjustResize + imePadding so the keyboard never pans the form
- Tests: form-field prefs round-trips, availability/access provider
  mappings; DE+EN strings throughout

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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

@@ -1,6 +1,9 @@
 package de.jeanlucmakiola.calendula.data.calendar
 
+import android.provider.CalendarContract
 import com.google.common.truth.Truth.assertThat
+import de.jeanlucmakiola.calendula.domain.AccessLevel
+import de.jeanlucmakiola.calendula.domain.Availability
 import de.jeanlucmakiola.calendula.domain.EventForm
 import kotlinx.datetime.LocalDate
 import kotlinx.datetime.LocalDateTime
@@ -36,6 +39,28 @@ class EventWriteMapperTest {
         assertThat(times.dtEndMillis - times.dtStartMillis).isEqualTo(86_400_000L)
     }
 
+    @Test
+    fun `availability maps to the provider constants`() {
+        assertThat(Availability.Busy.toProviderValue())
+            .isEqualTo(CalendarContract.Events.AVAILABILITY_BUSY)
+        assertThat(Availability.Free.toProviderValue())
+            .isEqualTo(CalendarContract.Events.AVAILABILITY_FREE)
+        assertThat(Availability.Tentative.toProviderValue())
+            .isEqualTo(CalendarContract.Events.AVAILABILITY_TENTATIVE)
+    }
+
+    @Test
+    fun `access level maps to the provider constants`() {
+        assertThat(AccessLevel.Default.toProviderValue())
+            .isEqualTo(CalendarContract.Events.ACCESS_DEFAULT)
+        assertThat(AccessLevel.Private.toProviderValue())
+            .isEqualTo(CalendarContract.Events.ACCESS_PRIVATE)
+        assertThat(AccessLevel.Confidential.toProviderValue())
+            .isEqualTo(CalendarContract.Events.ACCESS_CONFIDENTIAL)
+        assertThat(AccessLevel.Public.toProviderValue())
+            .isEqualTo(CalendarContract.Events.ACCESS_PUBLIC)
+    }
+
     @Test
     fun `multi-day all-day event spans every covered day`() {
         val times = form(

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

@@ -4,6 +4,7 @@ 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.domain.EventFormField
 import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.test.runTest
 import kotlinx.datetime.DayOfWeek
@@ -60,6 +61,45 @@ class SettingsPrefsTest {
         assertThat(prefs.themeMode.first()).isEqualTo(ThemeMode.SYSTEM)
     }
 
+    @Test
+    fun `form fields default to location and description`(@TempDir tempDir: Path) = runTest {
+        val prefs = SettingsPrefs(newDataStore(tempDir))
+        assertThat(prefs.defaultFormFields.first()).containsExactly(
+            EventFormField.Location,
+            EventFormField.Description,
+        )
+    }
+
+    @Test
+    fun `form field toggle round-trips`(@TempDir tempDir: Path) = runTest {
+        val prefs = SettingsPrefs(newDataStore(tempDir))
+        prefs.setFormFieldDefault(EventFormField.Reminders, enabled = true)
+        prefs.setFormFieldDefault(EventFormField.Location, enabled = false)
+        assertThat(prefs.defaultFormFields.first()).containsExactly(
+            EventFormField.Description,
+            EventFormField.Reminders,
+        )
+    }
+
+    @Test
+    fun `disabling every form field persists as none, not factory default`(@TempDir tempDir: Path) = runTest {
+        val prefs = SettingsPrefs(newDataStore(tempDir))
+        EventFormField.entries.forEach { prefs.setFormFieldDefault(it, enabled = false) }
+        assertThat(prefs.defaultFormFields.first()).isEmpty()
+    }
+
+    @Test
+    fun `unknown stored form-field names are dropped`(@TempDir tempDir: Path) = runTest {
+        val store = newDataStore(tempDir)
+        val prefs = SettingsPrefs(store)
+        store.updateData { p ->
+            val m = p.toMutablePreferences()
+            m[SettingsPrefs.FORM_FIELDS_KEY] = "Location,Hologram"
+            m
+        }
+        assertThat(prefs.defaultFormFields.first()).containsExactly(EventFormField.Location)
+    }
+
     @Test
     fun `explicit week-start prefs resolve regardless of locale`() {
         assertThat(WeekStartPref.MONDAY.resolveFirstDay(Locale.US)).isEqualTo(DayOfWeek.MONDAY)