feat(mobile): a routine calendar on Home (MOCA-191)

android/app/src/main/kotlin/com/openmausbot/companion/ui/Navigation.kt

@@ -32,6 +32,9 @@ sealed interface Destination {
     /** Settings → Workspace → Tasks & Routines. */
     data object Routines : Destination
 
+    /** Home → the routine calendar (MOCA-191). */
+    data object Calendar : Destination
+
     /** Settings → Workspace → Connected Apps. */
     data object ConnectedApps : Destination
 
@@ -143,6 +146,7 @@ class CompanionNavigator(initial: List<Destination> = listOf(Destination.Roster)
         private const val ROSTER = "roster"
         private const val SETTINGS = "settings"
         private const val ROUTINES = "routines"
+        private const val CALENDAR = "calendar"
         private const val CONNECTED_APPS = "connected-apps"
         private const val THREAD = "thread:"
         private const val COMPUTER = "computer:"
@@ -156,6 +160,7 @@ class CompanionNavigator(initial: List<Destination> = listOf(Destination.Roster)
                 Destination.Roster -> ROSTER
                 Destination.Settings -> SETTINGS
                 Destination.Routines -> ROUTINES
+                Destination.Calendar -> CALENDAR
                 Destination.ConnectedApps -> CONNECTED_APPS
                 is Destination.Thread -> THREAD + it.threadId
                 is Destination.Computer -> COMPUTER + it.botId
@@ -173,6 +178,7 @@ class CompanionNavigator(initial: List<Destination> = listOf(Destination.Roster)
                 it == ROSTER -> Destination.Roster
                 it == SETTINGS -> Destination.Settings
                 it == ROUTINES -> Destination.Routines
+                it == CALENDAR -> Destination.Calendar
                 it == CONNECTED_APPS -> Destination.ConnectedApps
                 it.startsWith(THREAD) -> Destination.Thread(it.removePrefix(THREAD))
                 it.startsWith(COMPUTER) -> Destination.Computer(it.removePrefix(COMPUTER))

android/app/src/main/kotlin/com/openmausbot/companion/ui/RootScreen.kt

@@ -384,6 +384,11 @@ private fun PairedScreen(
                     // iOS appends it to the same navigation path.
                     onOpenChat = navigator::open,
                 )
+                Destination.Calendar -> RoutineCalendarScreen(
+                    onBack = navigator::pop,
+                    // A run opens the chat its results went to, above the calendar.
+                    onOpenChat = navigator::open,
+                )
                 Destination.ConnectedApps -> ConnectedAppsScreen(onBack = navigator::pop)
                 // One branch for both shapes of chat address, so a notification's thread
                 // becoming an addressed chat re-reads the same screen instead of

android/app/src/main/kotlin/com/openmausbot/companion/ui/RosterScreen.kt

@@ -34,6 +34,7 @@ import androidx.compose.material.icons.filled.Create
 import androidx.compose.material.icons.filled.Notifications
 import androidx.compose.material.icons.filled.Person
 import androidx.compose.material.icons.filled.Search
+import androidx.compose.material.icons.filled.DateRange
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material3.CircularProgressIndicator
 import androidx.compose.material3.ExperimentalMaterial3Api
@@ -299,6 +300,7 @@ fun RosterScreen(navigator: CompanionNavigator) {
                 name = connection?.name,
                 status = status,
                 onSettings = { navigator.push(Destination.Settings) },
+                onCalendar = { navigator.push(Destination.Calendar) },
             )
             StatusBanner()
 
@@ -624,7 +626,7 @@ private val StringSetSaver = listSaver<Set<String>, String>(
  * they live in the bar at the bottom and at the end of the groups strip.
  */
 @Composable
-private fun RosterHeader(name: String?, status: Session.Status, onSettings: () -> Unit) {
+private fun RosterHeader(name: String?, status: Session.Status, onSettings: () -> Unit, onCalendar: () -> Unit) {
     Row(
         modifier = Modifier
             .fillMaxWidth()
@@ -659,6 +661,14 @@ private fun RosterHeader(name: String?, status: Session.Status, onSettings: () -
             )
         }
 
+        // Routines on a calendar, a tap from Home rather than buried in
+        // Settings (MOCA-191).
+        ChromeButton(
+            icon = Icons.Filled.DateRange,
+            contentDescription = stringResource(R.string.mobile_calendar_open),
+            onClick = onCalendar,
+            modifier = Modifier.testTag("open-calendar"),
+        )
         ChromeButton(
             icon = Icons.Filled.Settings,
             contentDescription = stringResource(R.string.mobile_settings_c7f73bb5),