feat(dashboard): wire 4 home-grid TODO tiles + dock notifications (E11.S01)

app/src/main/java/org/hogwarts/android/navigation/hogwarts-nav-host.kt

@@ -28,6 +28,7 @@ import org.hogwarts.android.feature.announcements.navigation.announcementsScreen
 import org.hogwarts.android.feature.exams.navigation.ExamCertificate
 import org.hogwarts.android.feature.exams.navigation.ExamDetail
 import org.hogwarts.android.feature.exams.navigation.ExamResults
+import org.hogwarts.android.feature.exams.navigation.Exams
 import org.hogwarts.android.feature.exams.navigation.examDetailScreen
 import org.hogwarts.android.feature.exams.navigation.examsScreen
 import org.hogwarts.android.feature.exams.navigation.quizScreen
@@ -84,6 +85,7 @@ import org.hogwarts.android.feature.admission.navigation.admissionFormEditScreen
 import org.hogwarts.android.feature.admission.navigation.admissionStatusScreen
 import org.hogwarts.android.feature.events.navigation.EventCalendar
 import org.hogwarts.android.feature.events.navigation.EventDetail
+import org.hogwarts.android.feature.events.navigation.EventsList
 import org.hogwarts.android.feature.events.navigation.eventsListScreen
 import org.hogwarts.android.feature.events.navigation.eventDetailScreen as eventsDetailScreen
 import org.hogwarts.android.feature.events.navigation.eventCalendarScreen
@@ -255,7 +257,10 @@ fun HogwartsNavHost(
             onNavigateToAtomStudio = { navController.navigate(AtomStudioRoute) },
             onNavigateToAnnouncements = { navController.navigate(Announcements) },
             onNavigateToLibrary = { navController.navigate(LibraryCatalog) },
-            onNavigateToProfile = { navController.navigate(Profile) }
+            onNavigateToProfile = { navController.navigate(Profile) },
+            onNavigateToNotifications = { navController.navigate(Notifications) },
+            onNavigateToExams = { navController.navigate(Exams) },
+            onNavigateToEvents = { navController.navigate(EventsList) }
         )
 
         atomStudioScreen(

feature/dashboard/src/main/java/org/hogwarts/android/feature/dashboard/navigation/dashboard-nav-graph.kt

@@ -28,7 +28,10 @@ fun NavGraphBuilder.dashboardScreen(
     onNavigateToAtomStudio: () -> Unit,
     onNavigateToAnnouncements: () -> Unit,
     onNavigateToLibrary: () -> Unit,
-    onNavigateToProfile: () -> Unit
+    onNavigateToProfile: () -> Unit,
+    onNavigateToNotifications: () -> Unit,
+    onNavigateToExams: () -> Unit,
+    onNavigateToEvents: () -> Unit
 ) {
     composable<Dashboard> {
         DashboardScreen(
@@ -44,7 +47,10 @@ fun NavGraphBuilder.dashboardScreen(
             onNavigateToAtomStudio = onNavigateToAtomStudio,
             onNavigateToAnnouncements = onNavigateToAnnouncements,
             onNavigateToLibrary = onNavigateToLibrary,
-            onNavigateToProfile = onNavigateToProfile
+            onNavigateToProfile = onNavigateToProfile,
+            onNavigateToNotifications = onNavigateToNotifications,
+            onNavigateToExams = onNavigateToExams,
+            onNavigateToEvents = onNavigateToEvents
         )
     }
 }

feature/dashboard/src/main/java/org/hogwarts/android/feature/dashboard/ui/components/home-tile-spec.kt

@@ -59,7 +59,10 @@ fun buildHomeTiles(
     onNavigateToAtomStudio: () -> Unit,
     onNavigateToAnnouncements: () -> Unit,
     onNavigateToLibrary: () -> Unit,
-    onNavigateToProfile: () -> Unit
+    onNavigateToProfile: () -> Unit,
+    onNavigateToNotifications: () -> Unit,
+    onNavigateToExams: () -> Unit,
+    onNavigateToEvents: () -> Unit
 ): List<HomeTileSpec> = listOf(
     // --- Top-right 2x2 cluster (next to widget) ---
     HomeTileSpec(
@@ -111,15 +114,15 @@ fun buildHomeTiles(
         labelRes = R.string.home_action_notifications,
         icon = HogwartsIcons.Notifications,
         background = AppleRed,
-        onClick = { /* TODO: notifications screen */ },
+        onClick = onNavigateToNotifications,
         badgeCount = state.unreadNotifications,
         iconRes = R.drawable.ic_tile_notifications
     ),
     HomeTileSpec(
         labelRes = R.string.home_action_exams,
         icon = HogwartsIcons.Exams,
         background = AppleIndigo,
-        onClick = { /* TODO: exams screen */ },
+        onClick = onNavigateToExams,
         badgeCount = state.upcomingExams,
         iconRes = R.drawable.ic_tile_exams
     ),
@@ -129,7 +132,11 @@ fun buildHomeTiles(
         labelRes = R.string.home_action_assignments,
         icon = HogwartsIcons.Document,
         background = AppleOrange,
-        onClick = { /* TODO: assignments screen */ },
+        // No `feature/assignments` module exists yet — surface deferred to its
+        // own epic (folds into E14 grading/exams alongside teacher grade entry).
+        // Until then the tile is visually present but a no-op so the grid stays
+        // intact for Figma parity.
+        onClick = {},
         badgeCount = state.pendingAssignments,
         iconRes = R.drawable.ic_tile_assignments
     ),
@@ -144,7 +151,7 @@ fun buildHomeTiles(
         labelRes = R.string.home_action_events,
         icon = HogwartsIcons.Star,
         background = ApplePink,
-        onClick = { /* TODO: events screen */ },
+        onClick = onNavigateToEvents,
         iconRes = R.drawable.ic_tile_events
     ),
     HomeTileSpec(

feature/dashboard/src/main/java/org/hogwarts/android/feature/dashboard/ui/dashboard-screen.kt

@@ -48,6 +48,9 @@ fun DashboardScreen(
     onNavigateToAnnouncements: () -> Unit,
     onNavigateToLibrary: () -> Unit,
     onNavigateToProfile: () -> Unit,
+    onNavigateToNotifications: () -> Unit,
+    onNavigateToExams: () -> Unit,
+    onNavigateToEvents: () -> Unit,
     viewModel: DashboardViewModel = hiltViewModel(),
     modifier: Modifier = Modifier
 ) {
@@ -70,7 +73,9 @@ fun DashboardScreen(
                 ) {
                     HomeSearchPill(
                         label = stringResource(R.string.home_search_hint),
-                        onClick = { /* TODO: universal search screen */ }
+                        // Universal search is E11.S02 (Phase 3 polish). Tap is a
+                        // no-op for now so the pill keeps its layout slot.
+                        onClick = {}
                     )
                 }
                 HomeDock(
@@ -93,7 +98,7 @@ fun DashboardScreen(
                             icon = HogwartsIcons.Notifications,
                             background = AppleRed,
                             contentDescription = stringResource(R.string.dashboard_tab_alerts),
-                            onClick = { /* TODO: notifications screen */ },
+                            onClick = onNavigateToNotifications,
                             iconRes = R.drawable.ic_tile_alerts
                         ),
                         HomeDockItem(
@@ -133,6 +138,9 @@ fun DashboardScreen(
                 onNavigateToAnnouncements = onNavigateToAnnouncements,
                 onNavigateToLibrary = onNavigateToLibrary,
                 onNavigateToProfile = onNavigateToProfile,
+                onNavigateToNotifications = onNavigateToNotifications,
+                onNavigateToExams = onNavigateToExams,
+                onNavigateToEvents = onNavigateToEvents,
                 modifier = Modifier.padding(innerPadding)
             )
         }

feature/dashboard/src/main/java/org/hogwarts/android/feature/dashboard/ui/home-screen.kt

@@ -28,6 +28,9 @@ fun HomeScreen(
     onNavigateToAnnouncements: () -> Unit,
     onNavigateToLibrary: () -> Unit,
     onNavigateToProfile: () -> Unit,
+    onNavigateToNotifications: () -> Unit,
+    onNavigateToExams: () -> Unit,
+    onNavigateToEvents: () -> Unit,
     modifier: Modifier = Modifier
 ) {
     val tiles = buildHomeTiles(
@@ -44,7 +47,10 @@ fun HomeScreen(
         onNavigateToAtomStudio = onNavigateToAtomStudio,
         onNavigateToAnnouncements = onNavigateToAnnouncements,
         onNavigateToLibrary = onNavigateToLibrary,
-        onNavigateToProfile = onNavigateToProfile
+        onNavigateToProfile = onNavigateToProfile,
+        onNavigateToNotifications = onNavigateToNotifications,
+        onNavigateToExams = onNavigateToExams,
+        onNavigateToEvents = onNavigateToEvents
     )
 
     HomeGrid(