feat(widget): per-residence widget configuration (Android, gitea#6)

Mirrors the iOS implementation. Adds a Glance configuration activity
that launches when the user pins a new honeyDue widget tile and again
on "Edit Widget", lets them pick one of their residences (or "All
residences"), and persists the choice per-`appWidgetId`. Each tile's
`provideGlance` resolves its own scope and filters tasks (and stats,
on the large widget) accordingly.

Pieces:

- `WidgetConfigActivity` — Compose `ComponentActivity` hosting the
  residence-picker UI; reads the persisted residences sidecar, reads
  any prior scope for the current `appWidgetId`, writes the new
  selection on Save, and re-renders every widget tile.
- `WidgetDataStore` — new `widget_residences_json` key + a per-instance
  `widget_residence_id_<appWidgetId>` key. `clearAll()` sweeps the
  per-instance keys by prefix so logout doesn't leave dangling state.
- `WidgetDataRepository`:
  * `saveResidences(_)` / `loadResidences()` for the picker.
  * `saveResidenceIdFor(appWidgetId, residenceId)` /
    `loadResidenceIdFor(appWidgetId)` /
    `clearResidenceIdFor(appWidgetId)` for per-tile scope.
  * `loadTasksForResidence(residenceId)` and the
    `appWidgetId`-driven `loadTasksForWidget(appWidgetId)`.
  * `computeStatsFromTasks(tasks)` so the large widget's tiles
    reflect only the scoped task list (instead of the whole cache).
  * Pure `Filter.filterTasksForResidence(_, _)` on the companion
    object — easy to exercise from unit tests.
- `WidgetTaskDto` already carries `residenceId`. New `WidgetResidenceDto`
  added (id + name) — JSON-persisted via the sidecar.
- `WidgetRefreshWorker` / `DefaultWidgetRefreshDataSource` — pull
  `myResidences` alongside tasks/tier on each refresh and write the
  sidecar (best-effort; non-fatal if the call fails).
- `HoneyDue{Small,Medium,Large}Widget.provideGlance` — resolve
  `appWidgetId` via `GlanceAppWidgetManager(context).getAppWidgetId(id)`
  and call `loadTasksForWidget(appWidgetId)`.
- `HoneyDue{Small,Medium,Large}WidgetReceiver.onDeleted` — purge the
  per-instance residence scope key when the tile is removed.
- Manifest: register the configure activity with the
  `APPWIDGET_CONFIGURE` action.
- `honeydue_{small,medium,large}_widget_info.xml` — declare
  `android:configure="com.tt.honeyDue.widget.WidgetConfigActivity"`.

Migration / safety:
- A tile that's never been through the picker has no residence id
  saved → `loadTasksForWidget` returns every task (legacy "All
  residences" behaviour). Existing tiles keep working without the
  user touching anything.
- The picker handles an empty residences list (signed-out / first
  install before background refresh) with an explicit helper message
  pointing at the main app.

Tests: new `WidgetResidenceFilterTest` (commonTest-style under
`androidUnitTest`, 9 cases). All green.

  $ ./gradlew :composeApp:testDebugUnitTest \\
      --tests "com.tt.honeyDue.widget.WidgetResidenceFilterTest"
  BUILD SUCCESSFUL

  $ ./gradlew :composeApp:assembleDebug
  BUILD SUCCESSFUL

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

composeApp/src/androidMain/AndroidManifest.xml

@@ -121,6 +121,19 @@
             </intent-filter>
         </receiver>
 
+        <!-- Per-widget residence picker (gitea#6). Each widget provider
+             XML declares `android:configure` pointing at this activity,
+             so the system launches it whenever the user pins a new
+             tile or hits "Edit Widget" on an existing one. -->
+        <activity
+            android:name=".widget.WidgetConfigActivity"
+            android:exported="true"
+            android:theme="@android:style/Theme.Material.Light.NoActionBar">
+            <intent-filter>
+                <action android:name="android.appwidget.action.APPWIDGET_CONFIGURE" />
+            </intent-filter>
+        </activity>
+
         <!-- Small Widget Receiver (2x1) -->
         <receiver
             android:name=".widget.HoneyDueSmallWidgetReceiver"

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/HoneyDueLargeWidget.kt

@@ -45,8 +45,14 @@ class HoneyDueLargeWidget : GlanceAppWidget() {
 
     override suspend fun provideGlance(context: Context, id: GlanceId) {
         val repo = WidgetDataRepository.get(context)
-        val tasks = repo.loadTasks()
-        val stats = repo.computeStats()
+        // Per-instance residence scoping (gitea#6). Stats are computed
+        // off the same filtered list so the bottom-tile counters
+        // ("Overdue / 7 days / 30 days") match the visible tasks
+        // instead of aggregating across every residence.
+        val appWidgetId =
+            androidx.glance.appwidget.GlanceAppWidgetManager(context).getAppWidgetId(id)
+        val tasks = repo.loadTasksForWidget(appWidgetId)
+        val stats = repo.computeStatsFromTasks(tasks)
         val tier = repo.loadTierState()
         val isPremium = tier.equals("premium", ignoreCase = true)
 
@@ -135,4 +141,9 @@ class HoneyDueLargeWidget : GlanceAppWidget() {
 /** AppWidget receiver for the large widget. */
 class HoneyDueLargeWidgetReceiver : GlanceAppWidgetReceiver() {
     override val glanceAppWidget: GlanceAppWidget = HoneyDueLargeWidget()
+
+    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
+        super.onDeleted(context, appWidgetIds)
+        WidgetReceiverHelpers.purgeResidenceScopes(context, appWidgetIds)
+    }
 }

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/HoneyDueMediumWidget.kt

@@ -36,7 +36,10 @@ class HoneyDueMediumWidget : GlanceAppWidget() {
 
     override suspend fun provideGlance(context: Context, id: GlanceId) {
         val repo = WidgetDataRepository.get(context)
-        val tasks = repo.loadTasks()
+        // Per-instance residence scoping (gitea#6). See small widget for rationale.
+        val appWidgetId =
+            androidx.glance.appwidget.GlanceAppWidgetManager(context).getAppWidgetId(id)
+        val tasks = repo.loadTasksForWidget(appWidgetId)
         val tier = repo.loadTierState()
         val isPremium = tier.equals("premium", ignoreCase = true)
 
@@ -122,4 +125,9 @@ class HoneyDueMediumWidget : GlanceAppWidget() {
 /** AppWidget receiver for the medium widget. */
 class HoneyDueMediumWidgetReceiver : GlanceAppWidgetReceiver() {
     override val glanceAppWidget: GlanceAppWidget = HoneyDueMediumWidget()
+
+    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
+        super.onDeleted(context, appWidgetIds)
+        WidgetReceiverHelpers.purgeResidenceScopes(context, appWidgetIds)
+    }
 }

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/HoneyDueSmallWidget.kt

@@ -2,6 +2,7 @@ package com.tt.honeyDue.widget
 
 import android.content.Context
 import android.content.Intent
+import kotlinx.coroutines.launch
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.unit.dp
 import androidx.glance.GlanceId
@@ -43,7 +44,13 @@ class HoneyDueSmallWidget : GlanceAppWidget() {
 
     override suspend fun provideGlance(context: Context, id: GlanceId) {
         val repo = WidgetDataRepository.get(context)
-        val tasks = repo.loadTasks()
+        // Resolve which residence this widget instance is scoped to
+        // (gitea#6). `loadTasksForWidget` falls back to "All residences"
+        // when no scope is saved, matching pre-#6 behaviour for tiles
+        // that haven't been configured yet.
+        val appWidgetId =
+            androidx.glance.appwidget.GlanceAppWidgetManager(context).getAppWidgetId(id)
+        val tasks = repo.loadTasksForWidget(appWidgetId)
         val tier = repo.loadTierState()
         val isPremium = tier.equals("premium", ignoreCase = true)
 
@@ -125,4 +132,35 @@ class OpenAppAction : ActionCallback {
 /** AppWidget receiver for the small widget. */
 class HoneyDueSmallWidgetReceiver : GlanceAppWidgetReceiver() {
     override val glanceAppWidget: GlanceAppWidget = HoneyDueSmallWidget()
+
+    override fun onDeleted(context: Context, appWidgetIds: IntArray) {
+        super.onDeleted(context, appWidgetIds)
+        // Clean per-instance residence scope when the user removes a tile
+        // so dangling `widget_residence_id_<n>` keys don't accumulate in
+        // the DataStore (gitea#6).
+        WidgetReceiverHelpers.purgeResidenceScopes(context, appWidgetIds)
+    }
+}
+
+/**
+ * Shared helpers for honeyDue Glance widget receivers. Kept in a
+ * top-level utility so every receiver size (Small / Medium / Large)
+ * uses identical cleanup logic.
+ */
+internal object WidgetReceiverHelpers {
+    @OptIn(kotlinx.coroutines.DelicateCoroutinesApi::class)
+    fun purgeResidenceScopes(context: Context, appWidgetIds: IntArray) {
+        if (appWidgetIds.isEmpty()) return
+        val repo = WidgetDataRepository.get(context)
+        // Fire-and-forget on a background dispatcher — `onDeleted` runs
+        // on the broadcast thread which doesn't permit suspend calls.
+        // GlobalScope is correct here: the IO is short-lived (one
+        // DataStore edit per removed appWidgetId) and there's no
+        // coroutine-scope tied to a long-lived receiver to attach to.
+        kotlinx.coroutines.GlobalScope.launch(kotlinx.coroutines.Dispatchers.IO) {
+            for (id in appWidgetIds) {
+                repo.clearResidenceIdFor(id)
+            }
+        }
+    }
 }

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/WidgetConfigActivity.kt

@@ -0,0 +1,270 @@
+package com.tt.honeyDue.widget
+
+import android.app.Activity
+import android.appwidget.AppWidgetManager
+import android.content.Intent
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.compose.foundation.background
+import androidx.compose.foundation.clickable
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.items
+import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Check
+import androidx.compose.material.icons.filled.Home
+import androidx.compose.material3.Button
+import androidx.compose.material3.CircularProgressIndicator
+import androidx.compose.material3.Icon
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.dp
+import androidx.glance.appwidget.GlanceAppWidgetManager
+import androidx.glance.appwidget.updateAll
+import com.tt.honeyDue.ui.theme.AppSpacing
+import com.tt.honeyDue.ui.theme.HoneyDueTheme
+import com.tt.honeyDue.ui.theme.ThemeManager
+import kotlinx.coroutines.launch
+import androidx.lifecycle.lifecycleScope
+
+/**
+ * Per-widget residence selector. Launched by the system when the user
+ * pins a new honeyDue widget (because each widget provider XML now
+ * declares `android:configure`) and again when they hit "Edit Widget".
+ *
+ * Saves the chosen residence id under
+ * `widget_residence_id_<appWidgetId>` in [WidgetDataStore] so each
+ * widget instance can independently scope its task list (gitea#6).
+ * Selecting "All residences" clears the key and the widget reverts to
+ * the legacy unscoped behaviour.
+ */
+class WidgetConfigActivity : ComponentActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        // The system passes the just-created widget id in the extras.
+        // Without it we don't know which widget to configure — bail
+        // with CANCELED so the system removes the placeholder tile.
+        val appWidgetId = intent?.extras?.getInt(
+            AppWidgetManager.EXTRA_APPWIDGET_ID,
+            AppWidgetManager.INVALID_APPWIDGET_ID
+        ) ?: AppWidgetManager.INVALID_APPWIDGET_ID
+
+        if (appWidgetId == AppWidgetManager.INVALID_APPWIDGET_ID) {
+            setResult(Activity.RESULT_CANCELED)
+            finish()
+            return
+        }
+
+        // Default a CANCEL result so the widget is removed if the user
+        // dismisses without saving (matches the Android convention).
+        setResult(
+            Activity.RESULT_CANCELED,
+            Intent().putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId)
+        )
+
+        setContent {
+            val theme = ThemeManager.currentTheme
+            HoneyDueTheme(themeColors = theme) {
+                WidgetConfigScreen(
+                    appWidgetId = appWidgetId,
+                    onCommit = { residenceId ->
+                        lifecycleScope.launch {
+                            val repo = WidgetDataRepository.get(this@WidgetConfigActivity)
+                            repo.saveResidenceIdFor(appWidgetId, residenceId)
+                            // Repaint every widget tile so this one
+                            // picks up the new scope on the next frame
+                            // (Glance handles which `appWidgetId` we
+                            // belong to via the per-instance state).
+                            HoneyDueSmallWidget().updateAll(this@WidgetConfigActivity)
+                            HoneyDueMediumWidget().updateAll(this@WidgetConfigActivity)
+                            HoneyDueLargeWidget().updateAll(this@WidgetConfigActivity)
+
+                            setResult(
+                                Activity.RESULT_OK,
+                                Intent().putExtra(
+                                    AppWidgetManager.EXTRA_APPWIDGET_ID,
+                                    appWidgetId
+                                )
+                            )
+                            finish()
+                        }
+                    }
+                )
+            }
+        }
+    }
+}
+
+/**
+ * The actual picker UI. Loads residences from [WidgetDataRepository]
+ * and offers an "All residences" option above them. Empty state shows
+ * a helper message instead of an empty list (user hasn't created any
+ * residences yet, or the main app hasn't synced).
+ */
+@Composable
+private fun WidgetConfigScreen(
+    appWidgetId: Int,
+    onCommit: (Long?) -> Unit
+) {
+    var residences by remember { mutableStateOf<List<WidgetResidenceDto>?>(null) }
+    var selectedId by remember { mutableStateOf<Long?>(null) }
+
+    val context = androidx.compose.ui.platform.LocalContext.current
+    LaunchedEffect(appWidgetId) {
+        val repo = WidgetDataRepository.get(context)
+        // Pre-select whatever the user picked last time they configured
+        // this same widget; falls back to "All residences" on first run.
+        selectedId = repo.loadResidenceIdFor(appWidgetId)
+        residences = repo.loadResidences()
+    }
+
+    Column(
+        modifier = Modifier
+            .fillMaxSize()
+            .background(MaterialTheme.colorScheme.background)
+            .padding(AppSpacing.lg)
+    ) {
+        Text(
+            text = "Choose a residence",
+            style = MaterialTheme.typography.headlineSmall,
+            fontWeight = FontWeight.SemiBold,
+            color = MaterialTheme.colorScheme.onBackground
+        )
+        Spacer(Modifier.height(AppSpacing.sm))
+        Text(
+            text = "This widget will only show tasks for the residence you pick. " +
+                "Choose \"All residences\" to keep showing every home.",
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Spacer(Modifier.height(AppSpacing.lg))
+
+        val items = residences
+        if (items == null) {
+            // Loading state — DataStore reads off the IO dispatcher.
+            Box(modifier = Modifier.fillMaxSize(), contentAlignment = Alignment.Center) {
+                CircularProgressIndicator()
+            }
+            return@Column
+        }
+
+        LazyColumn(
+            modifier = Modifier.weight(1f, fill = true),
+            verticalArrangement = Arrangement.spacedBy(AppSpacing.sm)
+        ) {
+            // "All residences" — selecting clears the per-widget key.
+            item {
+                ResidenceRow(
+                    title = "All residences",
+                    isSelected = selectedId == null,
+                    onClick = { selectedId = null }
+                )
+            }
+            if (items.isEmpty()) {
+                item {
+                    EmptyResidencesNote()
+                }
+            } else {
+                items(items, key = { it.id }) { residence ->
+                    ResidenceRow(
+                        title = residence.name,
+                        isSelected = selectedId == residence.id,
+                        onClick = { selectedId = residence.id }
+                    )
+                }
+            }
+        }
+
+        Spacer(Modifier.height(AppSpacing.lg))
+        Button(
+            onClick = { onCommit(selectedId) },
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Text("Save")
+        }
+    }
+}
+
+@Composable
+private fun ResidenceRow(
+    title: String,
+    isSelected: Boolean,
+    onClick: () -> Unit
+) {
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clip(RoundedCornerShape(AppSpacing.md))
+            .background(
+                if (isSelected) MaterialTheme.colorScheme.primaryContainer
+                else MaterialTheme.colorScheme.surfaceVariant
+            )
+            .clickable(onClick = onClick)
+            .padding(AppSpacing.lg)
+    ) {
+        androidx.compose.foundation.layout.Row(
+            verticalAlignment = Alignment.CenterVertically,
+            modifier = Modifier.fillMaxWidth()
+        ) {
+            Icon(
+                imageVector = Icons.Default.Home,
+                contentDescription = null,
+                tint = if (isSelected) MaterialTheme.colorScheme.primary
+                else MaterialTheme.colorScheme.onSurfaceVariant
+            )
+            Spacer(Modifier.fillMaxWidth(0.04f))
+            Text(
+                text = title,
+                style = MaterialTheme.typography.bodyLarge,
+                color = MaterialTheme.colorScheme.onBackground,
+                modifier = Modifier.weight(1f)
+            )
+            if (isSelected) {
+                Icon(
+                    imageVector = Icons.Default.Check,
+                    contentDescription = "Selected",
+                    tint = MaterialTheme.colorScheme.primary
+                )
+            }
+        }
+    }
+}
+
+@Composable
+private fun EmptyResidencesNote() {
+    Box(
+        modifier = Modifier
+            .fillMaxWidth()
+            .clip(RoundedCornerShape(AppSpacing.md))
+            .background(MaterialTheme.colorScheme.surfaceVariant)
+            .padding(AppSpacing.lg)
+    ) {
+        Text(
+            text = "No residences yet — open honeyDue and add a property first, " +
+                "then come back to configure this widget.",
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+    }
+}

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/WidgetDataRepository.kt

@@ -115,6 +115,66 @@ class WidgetDataRepository internal constructor(private val context: Context) {
         return all.filterNot { it.id in pending }
     }
 
+    /**
+     * Load the cached task list filtered by [residenceId]. Pass `null` to
+     * return every residence's tasks (the "All residences" widget option,
+     * matching pre-gitea#6 behaviour).
+     *
+     * Pending completions are excluded — same contract as [loadTasks].
+     */
+    suspend fun loadTasksForResidence(residenceId: Long?): List<WidgetTaskDto> {
+        val all = loadTasks()
+        return filterTasksForResidence(all, residenceId)
+    }
+
+    /**
+     * Resolve the residence scope for [appWidgetId] and return only its
+     * tasks. The widget [GlanceAppWidget.provideGlance] looks up its
+     * `appWidgetId` and calls this; configuration changes take effect on
+     * the next `updateAll` invocation.
+     */
+    suspend fun loadTasksForWidget(appWidgetId: Int): List<WidgetTaskDto> {
+        val residenceId = store.readResidenceIdFor(appWidgetId)
+        return loadTasksForResidence(residenceId)
+    }
+
+    // =========================================================================
+    // Residence sidecar (gitea#6)
+    // =========================================================================
+
+    /**
+     * Persist the user's residences so [WidgetConfigActivity] can offer
+     * them in its picker. Called from the main app whenever
+     * `DataManager.myResidences` updates.
+     */
+    suspend fun saveResidences(residences: List<WidgetResidenceDto>) {
+        store.writeResidencesJson(json.encodeToString(residences))
+    }
+
+    /** Read the persisted residence list (empty when never written or after logout). */
+    suspend fun loadResidences(): List<WidgetResidenceDto> {
+        val raw = store.readResidencesJson()
+        return try {
+            json.decodeFromString<List<WidgetResidenceDto>>(raw)
+        } catch (e: Exception) {
+            emptyList()
+        }
+    }
+
+    /** Read which residence this widget instance is currently scoped to (null = All). */
+    suspend fun loadResidenceIdFor(appWidgetId: Int): Long? =
+        store.readResidenceIdFor(appWidgetId)
+
+    /** Persist the chosen residence for this widget instance. */
+    suspend fun saveResidenceIdFor(appWidgetId: Int, residenceId: Long?) {
+        store.writeResidenceIdFor(appWidgetId, residenceId)
+    }
+
+    /** Drop the per-widget residence selection when the widget is removed. */
+    suspend fun clearResidenceIdFor(appWidgetId: Int) {
+        store.clearResidenceIdFor(appWidgetId)
+    }
+
     /** Queue a task id for optimistic completion. See [loadTasks]. */
     suspend fun markPendingCompletion(taskId: Long) {
         val current = store.readPendingCompletionIds().toMutableSet()
@@ -141,8 +201,15 @@ class WidgetDataRepository internal constructor(private val context: Context) {
      *
      * Pending-completion tasks are excluded (via [loadTasks]).
      */
-    suspend fun computeStats(): WidgetStats {
-        val tasks = loadTasks()
+    suspend fun computeStats(): WidgetStats = computeStatsFromTasks(loadTasks())
+
+    /**
+     * Compute the same stats off a pre-filtered task list. Used by
+     * [HoneyDueLargeWidget] after applying the per-widget residence
+     * scope (gitea#6) so the stat tiles reflect only the residence the
+     * user picked.
+     */
+    fun computeStatsFromTasks(tasks: List<WidgetTaskDto>): WidgetStats {
         var overdue = 0
         var within7 = 0
         var within8To30 = 0
@@ -257,5 +324,18 @@ class WidgetDataRepository internal constructor(private val context: Context) {
 
         /** Legacy accessor — delegates to [get]. */
         fun getInstance(context: Context): WidgetDataRepository = get(context)
+
+        /**
+         * Pure filter — exposed for unit-test coverage. Mirrors iOS'
+         * `WidgetDataManager.filterTasks(_:forResidenceId:)` semantics
+         * (gitea#6).
+         */
+        fun filterTasksForResidence(
+            tasks: List<WidgetTaskDto>,
+            residenceId: Long?
+        ): List<WidgetTaskDto> {
+            if (residenceId == null) return tasks
+            return tasks.filter { it.residenceId == residenceId }
+        }
     }
 }

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/WidgetDataStore.kt

@@ -32,6 +32,15 @@ internal object WidgetDataStoreKeys {
     val PENDING_COMPLETION_IDS = stringPreferencesKey("pending_completion_ids")
     val LAST_REFRESH_TIME = longPreferencesKey("last_refresh_time")
     val USER_TIER = stringPreferencesKey("user_tier")
+    /** JSON-serialized List<WidgetResidenceDto> for the configuration picker (gitea#6). */
+    val WIDGET_RESIDENCES_JSON = stringPreferencesKey("widget_residences_json")
+
+    /**
+     * Returns a key for the `Long` residence id this `appWidgetId` is
+     * scoped to. Missing key = "All residences" (legacy behaviour).
+     */
+    fun residenceIdKeyFor(appWidgetId: Int) =
+        longPreferencesKey("widget_residence_id_$appWidgetId")
 }
 
 /**
@@ -90,6 +99,56 @@ class WidgetDataStore(private val context: Context) {
             prefs.remove(WidgetDataStoreKeys.PENDING_COMPLETION_IDS)
             prefs.remove(WidgetDataStoreKeys.LAST_REFRESH_TIME)
             prefs.remove(WidgetDataStoreKeys.USER_TIER)
+            prefs.remove(WidgetDataStoreKeys.WIDGET_RESIDENCES_JSON)
+            // Per-widget residence ids are added dynamically as
+            // `widget_residence_id_<appWidgetId>` keys; sweep them by
+            // prefix so logout doesn't leave dangling per-instance
+            // scoping behind.
+            prefs.asMap().keys
+                .filter { it.name.startsWith("widget_residence_id_") }
+                .forEach { prefs.remove(it) }
+        }
+    }
+
+    // =========================================================================
+    // Per-residence widget configuration (gitea#6)
+    // =========================================================================
+
+    /**
+     * Read the user's residences (id + name) as persisted by the main
+     * app. Used by [WidgetConfigActivity] to populate its picker.
+     */
+    suspend fun readResidencesJson(): String =
+        store.data.first()[WidgetDataStoreKeys.WIDGET_RESIDENCES_JSON] ?: "[]"
+
+    suspend fun writeResidencesJson(json: String) {
+        store.edit { prefs ->
+            prefs[WidgetDataStoreKeys.WIDGET_RESIDENCES_JSON] = json
+        }
+    }
+
+    /**
+     * Read the residence id this widget instance is scoped to, or `null`
+     * for "All residences" (no scoping — the legacy default).
+     */
+    suspend fun readResidenceIdFor(appWidgetId: Int): Long? =
+        store.data.first()[WidgetDataStoreKeys.residenceIdKeyFor(appWidgetId)]
+
+    suspend fun writeResidenceIdFor(appWidgetId: Int, residenceId: Long?) {
+        store.edit { prefs ->
+            val key = WidgetDataStoreKeys.residenceIdKeyFor(appWidgetId)
+            if (residenceId == null) {
+                prefs.remove(key)
+            } else {
+                prefs[key] = residenceId
+            }
+        }
+    }
+
+    /** Clear scoping for a removed widget instance (called from `onDeleted`). */
+    suspend fun clearResidenceIdFor(appWidgetId: Int) {
+        store.edit { prefs ->
+            prefs.remove(WidgetDataStoreKeys.residenceIdKeyFor(appWidgetId))
         }
     }
 }

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/WidgetRefreshWorker.kt

@@ -18,6 +18,13 @@ interface WidgetRefreshDataSource {
     suspend fun fetchTasks(): ApiResult<List<WidgetTaskDto>>
     /** Fetch the current user's subscription tier ("free" | "premium"). */
     suspend fun fetchTier(): String
+    /**
+     * Fetch the user's residences for the widget configuration picker
+     * (gitea#6). Returning an empty list is non-fatal — the worker will
+     * just skip the residence sidecar update and pre-existing scopes
+     * keep working until next refresh.
+     */
+    suspend fun fetchResidences(): List<WidgetResidenceDto> = emptyList()
 }
 
 /**
@@ -48,6 +55,16 @@ internal object DefaultWidgetRefreshDataSource : WidgetRefreshDataSource {
         }
     }
 
+    override suspend fun fetchResidences(): List<WidgetResidenceDto> {
+        val result = APILayer.getMyResidences(forceRefresh = false)
+        return when (result) {
+            is ApiResult.Success -> result.data.residences.map { r ->
+                WidgetResidenceDto(id = r.id.toLong(), name = r.name)
+            }
+            else -> emptyList()
+        }
+    }
+
     private fun mapToWidgetTasks(response: TaskColumnsResponse): List<WidgetTaskDto> {
         val out = mutableListOf<WidgetTaskDto>()
         for (column in response.columns) {
@@ -112,6 +129,16 @@ class WidgetRefreshWorker(
                 val repo = WidgetDataRepository.get(ctx)
                 repo.saveTasks(tasksResult.data)
                 repo.saveTierState(tier)
+                // Best-effort residence sidecar update — failure is
+                // non-fatal because pre-existing scopes (and the
+                // "All residences" fallback) keep working with stale
+                // data until the next refresh succeeds (gitea#6).
+                runCatching {
+                    val residences = dataSource.fetchResidences()
+                    if (residences.isNotEmpty()) {
+                        repo.saveResidences(residences)
+                    }
+                }
                 refreshGlanceWidgets(ctx)
                 // Chain the next scheduled refresh so cadence keeps ticking
                 // even if the OS evicts our periodic request. Wrapped in

composeApp/src/androidMain/kotlin/com/tt/honeyDue/widget/WidgetTaskDto.kt

@@ -34,6 +34,20 @@ data class WidgetTaskDto(
     val completed: Boolean
 )
 
+/**
+ * Lightweight residence identifier persisted to the widget DataStore.
+ *
+ * Written by the main app whenever [com.tt.honeyDue.data.DataManager.myResidences]
+ * updates so the widget configuration activity can offer the current
+ * residence list (gitea#6 — per-residence widget selection). Mirrors
+ * iOS' `WidgetDataManager.WidgetResidence` shape.
+ */
+@Serializable
+data class WidgetResidenceDto(
+    val id: Long,
+    val name: String
+)
+
 /**
  * Summary metrics computed from the cached task list.
  *

composeApp/src/androidMain/res/xml/honeydue_large_widget_info.xml

@@ -14,4 +14,5 @@
     android:previewLayout="@layout/widget_large_preview"
     android:description="@string/widget_large_description"
     android:updatePeriodMillis="1800000"
+    android:configure="com.tt.honeyDue.widget.WidgetConfigActivity"
     android:widgetFeatures="reconfigurable" />

composeApp/src/androidMain/res/xml/honeydue_medium_widget_info.xml

@@ -14,4 +14,5 @@
     android:previewLayout="@layout/widget_medium_preview"
     android:description="@string/widget_medium_description"
     android:updatePeriodMillis="1800000"
+    android:configure="com.tt.honeyDue.widget.WidgetConfigActivity"
     android:widgetFeatures="reconfigurable" />

composeApp/src/androidMain/res/xml/honeydue_small_widget_info.xml

@@ -14,4 +14,5 @@
     android:previewLayout="@layout/widget_small_preview"
     android:description="@string/widget_small_description"
     android:updatePeriodMillis="1800000"
+    android:configure="com.tt.honeyDue.widget.WidgetConfigActivity"
     android:widgetFeatures="reconfigurable" />

composeApp/src/androidUnitTest/kotlin/com/tt/honeyDue/widget/WidgetResidenceFilterTest.kt

@@ -0,0 +1,140 @@
+package com.tt.honeyDue.widget
+
+import android.content.Context
+import androidx.test.core.app.ApplicationProvider
+import kotlinx.coroutines.test.runTest
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertNull
+import org.junit.Assert.assertTrue
+import org.junit.Before
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.robolectric.RobolectricTestRunner
+
+/**
+ * Coverage for the per-residence widget filter added in gitea#6.
+ *
+ * Two surfaces under test:
+ *
+ *  1. `WidgetDataRepository.filterTasksForResidence` — the pure filter
+ *     used by `loadTasksForResidence` and (transitively) by the
+ *     timeline provider. Mirrors iOS' `WidgetDataManager.filterTasks`.
+ *  2. The per-`appWidgetId` DataStore key — verifies round-tripping
+ *     a saved residence id and clearing it for a removed widget.
+ */
+@RunWith(RobolectricTestRunner::class)
+class WidgetResidenceFilterTest {
+
+    private lateinit var context: Context
+    private lateinit var repo: WidgetDataRepository
+
+    @Before
+    fun setUp() = runTest {
+        context = ApplicationProvider.getApplicationContext()
+        repo = WidgetDataRepository.get(context)
+        repo.clearAll()
+    }
+
+    @After
+    fun tearDown() = runTest {
+        repo.clearAll()
+    }
+
+    private fun task(id: Long, residenceId: Long): WidgetTaskDto =
+        WidgetTaskDto(
+            id = id,
+            title = "Task $id",
+            priority = 0,
+            dueDate = null,
+            isOverdue = false,
+            daysUntilDue = 0,
+            residenceId = residenceId,
+            residenceName = "",
+            categoryIcon = "",
+            completed = false
+        )
+
+    // --- pure filter -------------------------------------------------------
+
+    @Test
+    fun filter_nullResidenceReturnsAllTasks() {
+        val tasks = listOf(task(1, 10), task(2, 20), task(3, 30))
+        val result = WidgetDataRepository.filterTasksForResidence(tasks, residenceId = null)
+        assertEquals(listOf(1L, 2L, 3L), result.map { it.id })
+    }
+
+    @Test
+    fun filter_matchingResidenceKeepsOnlyMatchingTasks() {
+        val tasks = listOf(task(1, 10), task(2, 20), task(3, 10), task(4, 30))
+        val result = WidgetDataRepository.filterTasksForResidence(tasks, residenceId = 10)
+        assertEquals(listOf(1L, 3L), result.map { it.id })
+    }
+
+    @Test
+    fun filter_unknownResidenceReturnsEmpty() {
+        val tasks = listOf(task(1, 10), task(2, 20))
+        val result = WidgetDataRepository.filterTasksForResidence(tasks, residenceId = 999)
+        assertTrue(result.isEmpty())
+    }
+
+    @Test
+    fun filter_preservesInputOrder() {
+        // Subset only — the timeline provider relies on this so its
+        // own sort step ("overdue first, then by due date") operates
+        // on already-filtered tasks.
+        val tasks = listOf(task(5, 1), task(3, 1), task(7, 1), task(1, 2))
+        val result = WidgetDataRepository.filterTasksForResidence(tasks, residenceId = 1)
+        assertEquals(listOf(5L, 3L, 7L), result.map { it.id })
+    }
+
+    // --- DataStore round-trip ---------------------------------------------
+
+    @Test
+    fun perWidgetResidenceId_roundTripsThroughDataStore() = runTest {
+        // Initial state: no scope persisted → returns null ("All residences").
+        assertNull(repo.loadResidenceIdFor(appWidgetId = 42))
+
+        repo.saveResidenceIdFor(appWidgetId = 42, residenceId = 7L)
+        assertEquals(7L, repo.loadResidenceIdFor(appWidgetId = 42))
+
+        // Different widget id stays unscoped — keys are per-instance.
+        assertNull(repo.loadResidenceIdFor(appWidgetId = 99))
+
+        // Save null clears the scope ("All residences" selected after a
+        // previously residence-scoped tile).
+        repo.saveResidenceIdFor(appWidgetId = 42, residenceId = null)
+        assertNull(repo.loadResidenceIdFor(appWidgetId = 42))
+    }
+
+    @Test
+    fun loadTasksForWidget_appliesPerInstanceScope() = runTest {
+        repo.saveTasks(listOf(task(1, 10), task(2, 20), task(3, 10)))
+        repo.saveResidenceIdFor(appWidgetId = 1, residenceId = 10L)
+        repo.saveResidenceIdFor(appWidgetId = 2, residenceId = 20L)
+
+        assertEquals(listOf(1L, 3L), repo.loadTasksForWidget(1).map { it.id })
+        assertEquals(listOf(2L), repo.loadTasksForWidget(2).map { it.id })
+        // Unconfigured tile defaults to "All residences" — every task.
+        assertEquals(listOf(1L, 2L, 3L), repo.loadTasksForWidget(3).map { it.id })
+    }
+
+    @Test
+    fun clearResidenceIdFor_dropsScope() = runTest {
+        repo.saveResidenceIdFor(appWidgetId = 5, residenceId = 11L)
+        assertEquals(11L, repo.loadResidenceIdFor(5))
+
+        repo.clearResidenceIdFor(5)
+        assertNull(repo.loadResidenceIdFor(5))
+    }
+
+    @Test
+    fun saveResidences_roundTripsResidenceList() = runTest {
+        val payload = listOf(
+            WidgetResidenceDto(id = 1, name = "Home"),
+            WidgetResidenceDto(id = 2, name = "Cabin")
+        )
+        repo.saveResidences(payload)
+        assertEquals(payload, repo.loadResidences())
+    }
+}