diff --git a/lib/models/announcement.dart b/lib/models/announcement.dart
index 40c1be52..5c4761ad 100644
--- a/lib/models/announcement.dart
+++ b/lib/models/announcement.dart
@@ -11,6 +11,10 @@ class Announcement {
     this.templateId,
     required this.createdAt,
     required this.updatedAt,
+    required this.bannerEnabled,
+    this.bannerShowAt,
+    this.bannerHideAt,
+    this.pushIntervalMinutes,
   });
 
   final String id;
@@ -23,6 +27,29 @@ class Announcement {
   final DateTime createdAt;
   final DateTime updatedAt;
 
+  /// Whether a persistent banner is shown at the top of the announcements screen.
+  final bool bannerEnabled;
+
+  /// When the banner should start showing. [null] means immediately.
+  final DateTime? bannerShowAt;
+
+  /// When the banner should stop showing. [null] means it requires a manual
+  /// turn-off by the poster or an admin.
+  final DateTime? bannerHideAt;
+
+  /// How often (in minutes) a scheduled push notification is sent while the
+  /// banner is active. [null] means no scheduled push. Max is 1440 (daily).
+  final int? pushIntervalMinutes;
+
+  /// Whether the banner is currently active (visible) based on the current time.
+  bool get isBannerActive {
+    if (!bannerEnabled) return false;
+    final now = AppTime.now();
+    if (bannerShowAt != null && now.isBefore(bannerShowAt!)) return false;
+    if (bannerHideAt != null && now.isAfter(bannerHideAt!)) return false;
+    return true;
+  }
+
   @override
   bool operator ==(Object other) =>
       identical(this, other) ||
@@ -34,6 +61,10 @@ class Announcement {
           body == other.body &&
           isTemplate == other.isTemplate &&
           templateId == other.templateId &&
+          bannerEnabled == other.bannerEnabled &&
+          bannerShowAt == other.bannerShowAt &&
+          bannerHideAt == other.bannerHideAt &&
+          pushIntervalMinutes == other.pushIntervalMinutes &&
           createdAt == other.createdAt &&
           updatedAt == other.updatedAt;
 
@@ -45,15 +76,17 @@ class Announcement {
         body,
         isTemplate,
         templateId,
+        bannerEnabled,
+        bannerShowAt,
+        bannerHideAt,
+        pushIntervalMinutes,
         createdAt,
         updatedAt,
       );
 
   factory Announcement.fromMap(Map<String, dynamic> map) {
     final rolesRaw = map['visible_roles'];
-    final roles = rolesRaw is List
-        ? rolesRaw.cast<String>()
-        : <String>[];
+    final roles = rolesRaw is List ? rolesRaw.cast<String>() : <String>[];
 
     return Announcement(
       id: map['id'] as String,
@@ -65,6 +98,14 @@ class Announcement {
       templateId: map['template_id'] as String?,
       createdAt: AppTime.parse(map['created_at'] as String),
       updatedAt: AppTime.parse(map['updated_at'] as String),
+      bannerEnabled: map['banner_enabled'] as bool? ?? false,
+      bannerShowAt: map['banner_show_at'] != null
+          ? AppTime.parse(map['banner_show_at'] as String)
+          : null,
+      bannerHideAt: map['banner_hide_at'] != null
+          ? AppTime.parse(map['banner_hide_at'] as String)
+          : null,
+      pushIntervalMinutes: map['push_interval_minutes'] as int?,
     );
   }
 }
diff --git a/lib/providers/announcements_provider.dart b/lib/providers/announcements_provider.dart
index fab01f56..c104b0dd 100644
--- a/lib/providers/announcements_provider.dart
+++ b/lib/providers/announcements_provider.dart
@@ -80,6 +80,14 @@ final announcementCommentsProvider =
   return wrapper.stream.map((result) => result.data);
 });
 
+/// Active banner announcements for the current user.
+/// Returns only non-template announcements whose banner is currently in its
+/// active time window ([Announcement.isBannerActive]).
+final activeBannerAnnouncementsProvider = Provider<List<Announcement>>((ref) {
+  final all = ref.watch(announcementsProvider).valueOrNull ?? [];
+  return all.where((a) => !a.isTemplate && a.isBannerActive).toList();
+});
+
 final announcementsControllerProvider =
     Provider<AnnouncementsController>((ref) {
   final client = ref.watch(supabaseClientProvider);
@@ -100,6 +108,10 @@ class AnnouncementsController {
     required List<String> visibleRoles,
     bool isTemplate = false,
     String? templateId,
+    bool bannerEnabled = false,
+    DateTime? bannerShowAt,
+    DateTime? bannerHideAt,
+    int? pushIntervalMinutes,
   }) async {
     final authorId = _client.auth.currentUser?.id;
     if (authorId == null) return;
@@ -111,6 +123,10 @@ class AnnouncementsController {
       'visible_roles': visibleRoles,
       'is_template': isTemplate,
       'template_id': templateId,
+      'banner_enabled': bannerEnabled,
+      'banner_show_at': bannerShowAt?.toUtc().toIso8601String(),
+      'banner_hide_at': bannerHideAt?.toUtc().toIso8601String(),
+      'push_interval_minutes': pushIntervalMinutes,
     };
 
     final result = await _client
@@ -123,6 +139,12 @@ class AnnouncementsController {
     // Don't send notifications for templates (they are drafts for reuse)
     if (isTemplate) return;
 
+    // Skip the one-time creation push when a scheduled banner push is
+    // configured. The banner scheduler will send the first push on its own
+    // interval, so firing an extra push here would result in two back-to-back
+    // notifications for the same announcement.
+    if (bannerEnabled && pushIntervalMinutes != null) return;
+
     // Query users whose role matches visible_roles, excluding the author
     try {
       final profiles = await _client
@@ -161,6 +183,13 @@ class AnnouncementsController {
     required String body,
     required List<String> visibleRoles,
     bool? isTemplate,
+    bool? bannerEnabled,
+    DateTime? bannerShowAt,
+    DateTime? bannerHideAt,
+    int? pushIntervalMinutes,
+    bool clearBannerShowAt = false,
+    bool clearBannerHideAt = false,
+    bool clearPushInterval = false,
   }) async {
     final payload = <String, dynamic>{
       'title': title,
@@ -168,12 +197,53 @@ class AnnouncementsController {
       'visible_roles': visibleRoles,
       'updated_at': AppTime.nowUtc().toIso8601String(),
     };
-    if (isTemplate != null) {
-      payload['is_template'] = isTemplate;
+    if (isTemplate != null) payload['is_template'] = isTemplate;
+    if (bannerEnabled != null) payload['banner_enabled'] = bannerEnabled;
+    if (bannerShowAt != null) {
+      payload['banner_show_at'] = bannerShowAt.toUtc().toIso8601String();
+    } else if (clearBannerShowAt) {
+      payload['banner_show_at'] = null;
+    }
+    if (bannerHideAt != null) {
+      payload['banner_hide_at'] = bannerHideAt.toUtc().toIso8601String();
+    } else if (clearBannerHideAt) {
+      payload['banner_hide_at'] = null;
+    }
+    if (pushIntervalMinutes != null) {
+      payload['push_interval_minutes'] = pushIntervalMinutes;
+    } else if (clearPushInterval) {
+      payload['push_interval_minutes'] = null;
     }
     await _client.from('announcements').update(payload).eq('id', id);
   }
 
+  /// Update only the banner settings on an existing announcement.
+  /// Intended for the "Manage Banner" popup available to the poster and admins.
+  Future<void> updateBannerSettings({
+    required String id,
+    required bool bannerEnabled,
+    DateTime? bannerShowAt,
+    DateTime? bannerHideAt,
+    int? pushIntervalMinutes,
+  }) async {
+    await _client.from('announcements').update({
+      'banner_enabled': bannerEnabled,
+      'banner_show_at': bannerShowAt?.toUtc().toIso8601String(),
+      'banner_hide_at': bannerHideAt?.toUtc().toIso8601String(),
+      'push_interval_minutes': pushIntervalMinutes,
+      'updated_at': AppTime.nowUtc().toIso8601String(),
+    }).eq('id', id);
+  }
+
+  /// Immediately stops a banner by setting [banner_hide_at] to now.
+  /// Usable by the poster or an admin.
+  Future<void> dismissBanner(String id) async {
+    await _client.from('announcements').update({
+      'banner_hide_at': AppTime.nowUtc().toIso8601String(),
+      'updated_at': AppTime.nowUtc().toIso8601String(),
+    }).eq('id', id);
+  }
+
   /// Delete an announcement.
   Future<void> deleteAnnouncement(String id) async {
     await _client.from('announcements').delete().eq('id', id);
diff --git a/lib/screens/announcements/announcements_screen.dart b/lib/screens/announcements/announcements_screen.dart
index 0060fdd0..220d6753 100644
--- a/lib/screens/announcements/announcements_screen.dart
+++ b/lib/screens/announcements/announcements_screen.dart
@@ -1,8 +1,8 @@
 import 'dart:async';
+import 'dart:math' as math show min;
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
-import 'package:skeletonizer/skeletonizer.dart';
 
 import '../../models/announcement.dart';
 import '../../providers/announcements_provider.dart';
@@ -47,68 +47,73 @@ class _AnnouncementsScreenState extends ConsumerState<AnnouncementsScreen> {
       floatingActionButton: canCreate
           ? M3ExpandedFab(
               heroTag: 'announcement_fab',
-              onPressed: () =>
-                  showCreateAnnouncementDialog(context),
+              onPressed: () => showCreateAnnouncementDialog(context),
               icon: const Icon(Icons.add),
               label: const Text('New Announcement'),
             )
           : null,
       body: ResponsiveBody(
-        child: Skeletonizer(
-          enabled: showSkeleton,
-          child: CustomScrollView(
-            slivers: [
-              SliverToBoxAdapter(
-                child: AppPageHeader(title: 'Announcements'),
-              ),
-              if (hasError && !hasValue)
-                SliverFillRemaining(
-                  child: Center(
-                    child: Text(
-                      'Failed to load announcements.',
-                      style: Theme.of(context)
-                          .textTheme
-                          .bodyMedium
-                          ?.copyWith(
-                              color: Theme.of(context).colorScheme.error),
-                    ),
+        child: CustomScrollView(
+          slivers: [
+            SliverToBoxAdapter(
+              child: AppPageHeader(title: 'Announcements'),
+            ),
+
+            if (hasError && !hasValue)
+              SliverFillRemaining(
+                child: Center(
+                  child: Text(
+                    'Failed to load announcements.',
+                    style: Theme.of(context)
+                        .textTheme
+                        .bodyMedium
+                        ?.copyWith(
+                            color: Theme.of(context).colorScheme.error),
                   ),
-                )
-              else if (!showSkeleton && items.isEmpty)
-                SliverFillRemaining(
-                  child: Center(
-                    child: Column(
-                      mainAxisSize: MainAxisSize.min,
-                      children: [
-                        Icon(Icons.campaign_outlined,
-                            size: 64,
-                            color: Theme.of(context)
-                                .colorScheme
-                                .onSurfaceVariant),
-                        const SizedBox(height: 12),
-                        Text('No announcements yet',
-                            style: Theme.of(context)
-                                .textTheme
-                                .bodyLarge
-                                ?.copyWith(
-                                    color: Theme.of(context)
-                                        .colorScheme
-                                        .onSurfaceVariant)),
-                      ],
-                    ),
+                ),
+              )
+            else if (showSkeleton)
+              SliverList(
+                delegate: SliverChildBuilderDelegate(
+                  (context, index) => _buildPlaceholderCard(context),
+                  childCount: 5,
+                ),
+              )
+            else if (items.isEmpty)
+              SliverFillRemaining(
+                child: Center(
+                  child: Column(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Icon(Icons.campaign_outlined,
+                          size: 64,
+                          color: Theme.of(context)
+                              .colorScheme
+                              .onSurfaceVariant),
+                      const SizedBox(height: 12),
+                      Text('No announcements yet',
+                          style: Theme.of(context)
+                              .textTheme
+                              .bodyLarge
+                              ?.copyWith(
+                                  color: Theme.of(context)
+                                      .colorScheme
+                                      .onSurfaceVariant)),
+                    ],
                   ),
-                )
-              else
-                SliverList(
-                  delegate: SliverChildBuilderDelegate(
-                    (context, index) {
-                      if (showSkeleton) {
-                        // Placeholder card for shimmer
-                        return _buildPlaceholderCard(context);
-                      }
-                      final announcement = items[index];
-                      return _AnnouncementCard(
-                        key: ValueKey(announcement.id),
+                ),
+              )
+            else
+              SliverList(
+                delegate: SliverChildBuilderDelegate(
+                  (context, index) {
+                    final announcement = items[index];
+                    final delay = Duration(
+                        milliseconds: math.min(index, 8) * 60);
+                    return M3FadeSlideIn(
+                      key: ValueKey(announcement.id),
+                      delay: delay,
+                      child: _AnnouncementCard(
                         announcement: announcement,
                         profiles: profiles,
                         currentUserId: currentUserId,
@@ -157,15 +162,18 @@ class _AnnouncementsScreenState extends ConsumerState<AnnouncementsScreen> {
                             showSuccessSnackBarGlobal('Announcement deleted.');
                           }
                         },
-                      );
-                    },
-                    childCount: showSkeleton ? 5 : items.length,
-                  ),
+                        onBannerSettings: () => showBannerSettingsDialog(
+                          context,
+                          announcement: announcement,
+                        ),
+                      ),
+                    );
+                  },
+                  childCount: items.length,
                 ),
-              // Bottom padding so FAB doesn't cover last card
-              const SliverPadding(padding: EdgeInsets.only(bottom: 80)),
-            ],
-          ),
+              ),
+            const SliverPadding(padding: EdgeInsets.only(bottom: 80)),
+          ],
         ),
       ),
     );
@@ -173,7 +181,7 @@ class _AnnouncementsScreenState extends ConsumerState<AnnouncementsScreen> {
 
   Widget _buildPlaceholderCard(BuildContext context) {
     return Padding(
-      padding: const EdgeInsets.symmetric(horizontal: 0, vertical: 6),
+      padding: const EdgeInsets.symmetric(vertical: 6),
       child: M3Card.elevated(
         child: Padding(
           padding: const EdgeInsets.all(16),
@@ -182,43 +190,32 @@ class _AnnouncementsScreenState extends ConsumerState<AnnouncementsScreen> {
             children: [
               Row(
                 children: [
-                  const CircleAvatar(radius: 18),
+                  M3ShimmerBox(
+                    width: 36,
+                    height: 36,
+                    borderRadius: BorderRadius.circular(18),
+                  ),
                   const SizedBox(width: 10),
                   Expanded(
                     child: Column(
                       crossAxisAlignment: CrossAxisAlignment.start,
                       children: [
-                        Container(
-                          width: 120,
-                          height: 14,
-                          color: Colors.grey,
-                        ),
-                        const SizedBox(height: 4),
-                        Container(
-                          width: 60,
-                          height: 10,
-                          color: Colors.grey,
-                        ),
+                        M3ShimmerBox(width: 120, height: 13),
+                        const SizedBox(height: 5),
+                        M3ShimmerBox(width: 64, height: 10),
                       ],
                     ),
                   ),
                 ],
               ),
-              const SizedBox(height: 12),
-              ConstrainedBox(
-                constraints: const BoxConstraints(maxWidth: 200),
-                child: Container(
-                    width: double.infinity, height: 16, color: Colors.grey),
-              ),
+              const SizedBox(height: 14),
+              M3ShimmerBox(width: 200, height: 15),
               const SizedBox(height: 8),
-              Container(
-                  width: double.infinity, height: 12, color: Colors.grey),
-              const SizedBox(height: 4),
-              ConstrainedBox(
-                constraints: const BoxConstraints(maxWidth: 240),
-                child: Container(
-                    width: double.infinity, height: 12, color: Colors.grey),
-              ),
+              M3ShimmerBox(height: 12),
+              const SizedBox(height: 5),
+              M3ShimmerBox(width: 240, height: 12),
+              const SizedBox(height: 5),
+              M3ShimmerBox(width: 160, height: 12),
             ],
           ),
         ),
@@ -227,9 +224,12 @@ class _AnnouncementsScreenState extends ConsumerState<AnnouncementsScreen> {
   }
 }
 
+// ─────────────────────────────────────────────────────────────────────────────
+// Announcement card
+// ─────────────────────────────────────────────────────────────────────────────
+
 class _AnnouncementCard extends ConsumerStatefulWidget {
   const _AnnouncementCard({
-    super.key,
     required this.announcement,
     required this.profiles,
     required this.currentUserId,
@@ -239,6 +239,7 @@ class _AnnouncementCard extends ConsumerStatefulWidget {
     required this.onToggleComments,
     required this.onEdit,
     required this.onDelete,
+    required this.onBannerSettings,
   });
 
   final Announcement announcement;
@@ -250,6 +251,7 @@ class _AnnouncementCard extends ConsumerStatefulWidget {
   final VoidCallback onToggleComments;
   final VoidCallback onEdit;
   final VoidCallback onDelete;
+  final VoidCallback onBannerSettings;
 
   @override
   ConsumerState<_AnnouncementCard> createState() => _AnnouncementCardState();
@@ -272,9 +274,14 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
 
   bool get _inCooldown => _secondsRemaining > 0;
 
-  bool get _canResend =>
-      widget.announcement.authorId == widget.currentUserId ||
-      widget.currentUserRole == 'admin';
+  bool get _isOwner =>
+      widget.announcement.authorId == widget.currentUserId;
+
+  bool get _isAdmin => widget.currentUserRole == 'admin';
+
+  bool get _canManageBanner => _isOwner || _isAdmin;
+
+  bool get _canResend => _isOwner || _isAdmin;
 
   Future<void> _resendNotification() async {
     try {
@@ -283,7 +290,6 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
           .resendAnnouncementNotification(widget.announcement);
       if (mounted) setState(() => _sentAt = DateTime.now());
     } on AnnouncementNotificationException {
-      // Partial failure — start cooldown to prevent spam
       if (mounted) setState(() => _sentAt = DateTime.now());
     } catch (e) {
       if (mounted) showErrorSnackBar(context, 'Failed to send: $e');
@@ -306,27 +312,24 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
       }
     }
 
-    final isOwner = widget.announcement.authorId == widget.currentUserId;
-
     // Comment count
     final commentsAsync =
         ref.watch(announcementCommentsProvider(widget.announcement.id));
     final commentCount = commentsAsync.valueOrNull?.length ?? 0;
 
-    // Rebuild UI when cooldown is active to update the countdown display.
-    // This timer triggers rebuilds every 500ms while _inCooldown is true.
+    // Rebuild UI when cooldown is active.
     if (_inCooldown) {
       Future.delayed(const Duration(milliseconds: 500), () {
         if (mounted) setState(() {});
       });
     }
 
+    final hasBanner = widget.announcement.bannerEnabled;
+
     return Padding(
       padding: const EdgeInsets.symmetric(vertical: 6),
       child: M3Card.elevated(
         child: Column(
-          // mainAxisSize.min prevents the Column from trying to fill infinite
-          // height when rendered inside a SliverList (unbounded vertical axis).
           mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
@@ -352,15 +355,38 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
                           overflow: TextOverflow.ellipsis,
                         ),
                         const SizedBox(height: 2),
-                        Text(
-                          _relativeTime(widget.announcement.createdAt),
-                          style: tt.labelSmall
-                              ?.copyWith(color: cs.onSurfaceVariant),
+                        Row(
+                          children: [
+                            Flexible(
+                              child: Text(
+                                _relativeTime(widget.announcement.createdAt),
+                                style: tt.labelSmall
+                                    ?.copyWith(color: cs.onSurfaceVariant),
+                              ),
+                            ),
+                            if (hasBanner) ...[
+                              const SizedBox(width: 6),
+                              Tooltip(
+                                message: widget.announcement.isBannerActive
+                                    ? 'Banner active'
+                                    : 'Banner (inactive)',
+                                child: Icon(
+                                  Icons.campaign,
+                                  size: 14,
+                                  color: widget.announcement.isBannerActive
+                                      ? cs.primary
+                                      : cs.onSurfaceVariant,
+                                ),
+                              ),
+                            ],
+                          ],
                         ),
                       ],
                     ),
                   ),
-                  if (isOwner)
+                  // Popup menu: owner sees Edit/Delete/Banner;
+                  // admin-only sees Delete/Banner
+                  if (_isOwner || _canManageBanner)
                     PopupMenuButton<String>(
                       onSelected: (value) {
                         switch (value) {
@@ -368,13 +394,32 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
                             widget.onEdit();
                           case 'delete':
                             widget.onDelete();
+                          case 'banner':
+                            widget.onBannerSettings();
                         }
                       },
                       itemBuilder: (context) => [
-                        const PopupMenuItem(
-                            value: 'edit', child: Text('Edit')),
-                        const PopupMenuItem(
-                            value: 'delete', child: Text('Delete')),
+                        if (_isOwner)
+                          const PopupMenuItem(
+                              value: 'edit', child: Text('Edit')),
+                        if (_isOwner || _isAdmin)
+                          const PopupMenuItem(
+                              value: 'delete', child: Text('Delete')),
+                        if (_canManageBanner)
+                          PopupMenuItem(
+                            value: 'banner',
+                            child: Row(
+                              children: [
+                                Icon(Icons.campaign_outlined,
+                                    size: 18,
+                                    color: Theme.of(context)
+                                        .colorScheme
+                                        .primary),
+                                const SizedBox(width: 8),
+                                const Text('Banner Settings'),
+                              ],
+                            ),
+                          ),
                       ],
                     ),
                 ],
@@ -400,10 +445,7 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
                 runSpacing: 4,
                 children: widget.announcement.visibleRoles.map((role) {
                   return Chip(
-                    label: Text(
-                      _roleLabel(role),
-                      style: tt.labelSmall,
-                    ),
+                    label: Text(_roleLabel(role), style: tt.labelSmall),
                     visualDensity: VisualDensity.compact,
                     padding: EdgeInsets.zero,
                     materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
@@ -411,7 +453,7 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
                 }).toList(),
               ),
             ),
-            // Bottom action row: comment toggle + optional resend button
+            // Bottom action row
             Padding(
               padding: const EdgeInsets.fromLTRB(8, 4, 8, 0),
               child: Row(
@@ -492,6 +534,10 @@ class _AnnouncementCardState extends ConsumerState<_AnnouncementCard> {
   }
 }
 
+// ─────────────────────────────────────────────────────────────────────────────
+// Helpers
+// ─────────────────────────────────────────────────────────────────────────────
+
 String _relativeTime(DateTime dt) {
   final now = AppTime.now();
   final diff = now.difference(dt);
@@ -512,3 +558,4 @@ String _roleLabel(String role) {
   };
   return labels[role] ?? role;
 }
+
diff --git a/lib/screens/announcements/create_announcement_dialog.dart b/lib/screens/announcements/create_announcement_dialog.dart
index 2a506b10..aacce8ad 100644
--- a/lib/screens/announcements/create_announcement_dialog.dart
+++ b/lib/screens/announcements/create_announcement_dialog.dart
@@ -4,6 +4,7 @@ import 'package:flutter_riverpod/flutter_riverpod.dart';
 import '../../models/announcement.dart';
 import '../../providers/announcements_provider.dart';
 import '../../theme/m3_motion.dart';
+import '../../utils/app_time.dart';
 import '../../utils/snackbar.dart';
 import '../../widgets/app_breakpoints.dart';
 
@@ -22,6 +23,57 @@ const _roleLabels = {
   'standard': 'Standard',
 };
 
+/// Push notification interval options (minutes → display label).
+/// [null] means no scheduled push.
+const _pushIntervalOptions = [
+  (null, 'No scheduled push'),
+  (1, 'Every minute'),
+  (5, 'Every 5 minutes'),
+  (10, 'Every 10 minutes'),
+  (15, 'Every 15 minutes'),
+  (30, 'Every 30 minutes'),
+  (60, 'Every hour'),
+  (120, 'Every 2 hours'),
+  (360, 'Every 6 hours'),
+  (720, 'Every 12 hours'),
+  (1440, 'Daily'),
+];
+
+String _formatDt(DateTime dt) =>
+    '${AppTime.formatDate(dt)}  ${AppTime.formatTime(dt)}';
+
+/// Picks a date+time using the platform date and time pickers.
+/// Returns a Manila-timezone [DateTime] or [null] if cancelled.
+Future<DateTime?> pickDateTime(
+  BuildContext context, {
+  DateTime? initial,
+}) async {
+  final now = AppTime.now();
+  final startDate = initial ?? now;
+
+  final date = await showDatePicker(
+    context: context,
+    initialDate: startDate,
+    firstDate: now.subtract(const Duration(days: 1)),
+    lastDate: now.add(const Duration(days: 365)),
+  );
+  if (date == null || !context.mounted) return null;
+
+  final time = await showTimePicker(
+    context: context,
+    initialTime: TimeOfDay.fromDateTime(initial ?? now),
+  );
+  if (time == null) return null;
+
+  return AppTime.fromComponents(
+    year: date.year,
+    month: date.month,
+    day: date.day,
+    hour: time.hour,
+    minute: time.minute,
+  );
+}
+
 /// Shows the create/edit announcement dialog.
 ///
 /// On mobile, uses a full-screen bottom sheet; on desktop, a centered dialog.
@@ -49,6 +101,35 @@ Future<void> showCreateAnnouncementDialog(
   }
 }
 
+/// Shows a focused dialog to edit only the banner settings of an announcement.
+Future<void> showBannerSettingsDialog(
+  BuildContext context, {
+  required Announcement announcement,
+}) async {
+  final width = MediaQuery.sizeOf(context).width;
+  if (width < AppBreakpoints.tablet) {
+    await m3ShowBottomSheet<void>(
+      context: context,
+      isScrollControlled: true,
+      builder: (ctx) => _BannerSettingsContent(announcement: announcement),
+    );
+  } else {
+    await m3ShowDialog<void>(
+      context: context,
+      builder: (ctx) => Dialog(
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(maxWidth: 480),
+          child: _BannerSettingsContent(announcement: announcement),
+        ),
+      ),
+    );
+  }
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Create / Edit dialog
+// ─────────────────────────────────────────────────────────────────────────────
+
 class _CreateAnnouncementContent extends ConsumerStatefulWidget {
   const _CreateAnnouncementContent({this.editing});
 
@@ -70,6 +151,14 @@ class _CreateAnnouncementContentState
   // Template selection
   String? _selectedTemplateId;
 
+  // Banner state
+  bool _bannerEnabled = false;
+  bool _bannerShowImmediately = true; // false = custom date/time
+  DateTime? _bannerShowAt;
+  bool _bannerHideManual = true; // false = auto hide at custom date/time
+  DateTime? _bannerHideAt;
+  int? _pushIntervalMinutes; // null = no scheduled push
+
   @override
   void initState() {
     super.initState();
@@ -80,6 +169,14 @@ class _CreateAnnouncementContentState
         ? Set<String>.from(source.visibleRoles)
         : Set<String>.from(_defaultVisibleRoles);
     _isTemplate = widget.editing?.isTemplate ?? false;
+
+    // Banner initialisation from existing data
+    _bannerEnabled = source?.bannerEnabled ?? false;
+    _bannerShowAt = source?.bannerShowAt;
+    _bannerShowImmediately = source?.bannerShowAt == null;
+    _bannerHideAt = source?.bannerHideAt;
+    _bannerHideManual = source?.bannerHideAt == null;
+    _pushIntervalMinutes = source?.pushIntervalMinutes;
   }
 
   @override
@@ -111,11 +208,25 @@ class _CreateAnnouncementContentState
     });
   }
 
+  Future<void> _pickShowAt() async {
+    final dt = await pickDateTime(context, initial: _bannerShowAt);
+    if (dt != null) setState(() => _bannerShowAt = dt);
+  }
+
+  Future<void> _pickHideAt() async {
+    final dt = await pickDateTime(context, initial: _bannerHideAt);
+    if (dt != null) setState(() => _bannerHideAt = dt);
+  }
+
   Future<void> _submit() async {
     if (!_canSubmit) return;
     setState(() => _submitting = true);
     try {
       final ctrl = ref.read(announcementsControllerProvider);
+      final showAt = _bannerEnabled && !_bannerShowImmediately ? _bannerShowAt : null;
+      final hideAt = _bannerEnabled && !_bannerHideManual ? _bannerHideAt : null;
+      final interval = _bannerEnabled ? _pushIntervalMinutes : null;
+
       if (widget.editing != null) {
         await ctrl.updateAnnouncement(
           id: widget.editing!.id,
@@ -123,6 +234,13 @@ class _CreateAnnouncementContentState
           body: _bodyCtrl.text.trim(),
           visibleRoles: _selectedRoles.toList(),
           isTemplate: _isTemplate,
+          bannerEnabled: _bannerEnabled,
+          bannerShowAt: showAt,
+          bannerHideAt: hideAt,
+          pushIntervalMinutes: interval,
+          clearBannerShowAt: _bannerShowImmediately,
+          clearBannerHideAt: _bannerHideManual,
+          clearPushInterval: interval == null,
         );
       } else {
         await ctrl.createAnnouncement(
@@ -131,13 +249,16 @@ class _CreateAnnouncementContentState
           visibleRoles: _selectedRoles.toList(),
           isTemplate: _isTemplate,
           templateId: _selectedTemplateId,
+          bannerEnabled: _bannerEnabled,
+          bannerShowAt: showAt,
+          bannerHideAt: hideAt,
+          pushIntervalMinutes: interval,
         );
       }
       if (mounted) Navigator.of(context).pop();
       showSuccessSnackBarGlobal(
           widget.editing != null ? 'Announcement updated.' : 'Announcement posted.');
     } on AnnouncementNotificationException {
-      // Saved successfully; only push notification delivery failed.
       if (mounted) {
         final messenger = ScaffoldMessenger.of(context);
         Navigator.of(context).pop();
@@ -160,12 +281,12 @@ class _CreateAnnouncementContentState
     final tt = Theme.of(context).textTheme;
     final isEditing = widget.editing != null;
 
-    // Get available templates from the stream (filter client-side)
     final templates = ref
-        .watch(announcementsProvider)
-        .valueOrNull
-        ?.where((a) => a.isTemplate)
-        .toList() ?? [];
+            .watch(announcementsProvider)
+            .valueOrNull
+            ?.where((a) => a.isTemplate)
+            .toList() ??
+        [];
 
     return SingleChildScrollView(
       padding: const EdgeInsets.all(24),
@@ -173,7 +294,6 @@ class _CreateAnnouncementContentState
         mainAxisSize: MainAxisSize.min,
         crossAxisAlignment: CrossAxisAlignment.stretch,
         children: [
-          // Dialog title
           Text(
             isEditing ? 'Edit Announcement' : 'New Announcement',
             style: tt.titleLarge?.copyWith(fontWeight: FontWeight.w600),
@@ -285,6 +405,45 @@ class _CreateAnnouncementContentState
             value: _isTemplate,
             onChanged: (val) => setState(() => _isTemplate = val),
           ),
+
+          // ── Banner notification section ─────────────────────────────────
+          const Divider(height: 24),
+          SwitchListTile(
+            contentPadding: EdgeInsets.zero,
+            title: Row(
+              children: [
+                Icon(Icons.campaign_outlined, size: 18, color: cs.primary),
+                const SizedBox(width: 6),
+                Text('Banner Notification', style: tt.bodyMedium),
+              ],
+            ),
+            subtitle: Text(
+              'Pin a prominent banner at the top of the Announcements screen.',
+              style: tt.bodySmall?.copyWith(color: cs.onSurfaceVariant),
+            ),
+            value: _bannerEnabled,
+            onChanged: (val) => setState(() => _bannerEnabled = val),
+          ),
+
+          if (_bannerEnabled) ...[
+            const SizedBox(height: 12),
+            _BannerOptionsPanel(
+              showImmediately: _bannerShowImmediately,
+              showAt: _bannerShowAt,
+              hideManual: _bannerHideManual,
+              hideAt: _bannerHideAt,
+              pushIntervalMinutes: _pushIntervalMinutes,
+              onShowImmediatelyChanged: (v) =>
+                  setState(() => _bannerShowImmediately = v),
+              onPickShowAt: _pickShowAt,
+              onHideManualChanged: (v) =>
+                  setState(() => _bannerHideManual = v),
+              onPickHideAt: _pickHideAt,
+              onIntervalChanged: (v) =>
+                  setState(() => _pushIntervalMinutes = v),
+            ),
+          ],
+
           const SizedBox(height: 20),
 
           // Action buttons
@@ -314,3 +473,285 @@ class _CreateAnnouncementContentState
     );
   }
 }
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Banner Settings dialog (post-creation editing)
+// ─────────────────────────────────────────────────────────────────────────────
+
+class _BannerSettingsContent extends ConsumerStatefulWidget {
+  const _BannerSettingsContent({required this.announcement});
+
+  final Announcement announcement;
+
+  @override
+  ConsumerState<_BannerSettingsContent> createState() =>
+      _BannerSettingsContentState();
+}
+
+class _BannerSettingsContentState
+    extends ConsumerState<_BannerSettingsContent> {
+  late bool _bannerEnabled;
+  late bool _bannerShowImmediately;
+  DateTime? _bannerShowAt;
+  late bool _bannerHideManual;
+  DateTime? _bannerHideAt;
+  int? _pushIntervalMinutes;
+  bool _submitting = false;
+
+  @override
+  void initState() {
+    super.initState();
+    final a = widget.announcement;
+    _bannerEnabled = a.bannerEnabled;
+    _bannerShowAt = a.bannerShowAt;
+    _bannerShowImmediately = a.bannerShowAt == null;
+    _bannerHideAt = a.bannerHideAt;
+    _bannerHideManual = a.bannerHideAt == null;
+    _pushIntervalMinutes = a.pushIntervalMinutes;
+  }
+
+  Future<void> _pickShowAt() async {
+    final dt = await pickDateTime(context, initial: _bannerShowAt);
+    if (dt != null) setState(() => _bannerShowAt = dt);
+  }
+
+  Future<void> _pickHideAt() async {
+    final dt = await pickDateTime(context, initial: _bannerHideAt);
+    if (dt != null) setState(() => _bannerHideAt = dt);
+  }
+
+  Future<void> _save() async {
+    setState(() => _submitting = true);
+    try {
+      final showAt = !_bannerShowImmediately ? _bannerShowAt : null;
+      final hideAt = !_bannerHideManual ? _bannerHideAt : null;
+      final interval = _bannerEnabled ? _pushIntervalMinutes : null;
+
+      await ref.read(announcementsControllerProvider).updateBannerSettings(
+            id: widget.announcement.id,
+            bannerEnabled: _bannerEnabled,
+            bannerShowAt: showAt,
+            bannerHideAt: hideAt,
+            pushIntervalMinutes: interval,
+          );
+      if (mounted) Navigator.of(context).pop();
+      showSuccessSnackBarGlobal('Banner settings saved.');
+    } catch (e) {
+      if (mounted) showErrorSnackBar(context, 'Failed to save: $e');
+    } finally {
+      if (mounted) setState(() => _submitting = false);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final cs = Theme.of(context).colorScheme;
+    final tt = Theme.of(context).textTheme;
+
+    return SingleChildScrollView(
+      padding: const EdgeInsets.all(24),
+      child: Column(
+        mainAxisSize: MainAxisSize.min,
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          Row(
+            children: [
+              Icon(Icons.campaign_outlined, color: cs.primary),
+              const SizedBox(width: 8),
+              Text(
+                'Banner Settings',
+                style: tt.titleLarge?.copyWith(fontWeight: FontWeight.w600),
+              ),
+            ],
+          ),
+          const SizedBox(height: 4),
+          Text(
+            widget.announcement.title,
+            style: tt.bodySmall?.copyWith(color: cs.onSurfaceVariant),
+            maxLines: 2,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const SizedBox(height: 20),
+
+          SwitchListTile(
+            contentPadding: EdgeInsets.zero,
+            title: Text('Banner enabled', style: tt.bodyMedium),
+            value: _bannerEnabled,
+            onChanged: (v) => setState(() => _bannerEnabled = v),
+          ),
+
+          if (_bannerEnabled) ...[
+            const SizedBox(height: 12),
+            _BannerOptionsPanel(
+              showImmediately: _bannerShowImmediately,
+              showAt: _bannerShowAt,
+              hideManual: _bannerHideManual,
+              hideAt: _bannerHideAt,
+              pushIntervalMinutes: _pushIntervalMinutes,
+              onShowImmediatelyChanged: (v) =>
+                  setState(() => _bannerShowImmediately = v),
+              onPickShowAt: _pickShowAt,
+              onHideManualChanged: (v) =>
+                  setState(() => _bannerHideManual = v),
+              onPickHideAt: _pickHideAt,
+              onIntervalChanged: (v) =>
+                  setState(() => _pushIntervalMinutes = v),
+            ),
+          ],
+
+          const SizedBox(height: 20),
+          Row(
+            mainAxisAlignment: MainAxisAlignment.end,
+            children: [
+              TextButton(
+                onPressed: () => Navigator.of(context).pop(),
+                child: const Text('Cancel'),
+              ),
+              const SizedBox(width: 12),
+              FilledButton(
+                onPressed: _submitting ? null : _save,
+                child: _submitting
+                    ? const SizedBox(
+                        width: 20,
+                        height: 20,
+                        child: CircularProgressIndicator(
+                            strokeWidth: 2, color: Colors.white),
+                      )
+                    : const Text('Save'),
+              ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+// ─────────────────────────────────────────────────────────────────────────────
+// Shared banner options sub-panel (show from / stop showing / push interval)
+// ─────────────────────────────────────────────────────────────────────────────
+
+class _BannerOptionsPanel extends StatelessWidget {
+  const _BannerOptionsPanel({
+    required this.showImmediately,
+    required this.showAt,
+    required this.hideManual,
+    required this.hideAt,
+    required this.pushIntervalMinutes,
+    required this.onShowImmediatelyChanged,
+    required this.onPickShowAt,
+    required this.onHideManualChanged,
+    required this.onPickHideAt,
+    required this.onIntervalChanged,
+  });
+
+  final bool showImmediately;
+  final DateTime? showAt;
+  final bool hideManual;
+  final DateTime? hideAt;
+  final int? pushIntervalMinutes;
+  final ValueChanged<bool> onShowImmediatelyChanged;
+  final VoidCallback onPickShowAt;
+  final ValueChanged<bool> onHideManualChanged;
+  final VoidCallback onPickHideAt;
+  final ValueChanged<int?> onIntervalChanged;
+
+  @override
+  Widget build(BuildContext context) {
+    final cs = Theme.of(context).colorScheme;
+    final tt = Theme.of(context).textTheme;
+
+    return Container(
+      decoration: BoxDecoration(
+        color: cs.primaryContainer.withValues(alpha: 0.35),
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(color: cs.primary.withValues(alpha: 0.25)),
+      ),
+      padding: const EdgeInsets.all(16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          // ── Show from ────────────────────────────────────────────────────
+          Text('Show banner from', style: tt.labelMedium?.copyWith(color: cs.primary)),
+          const SizedBox(height: 8),
+          SegmentedButton<bool>(
+            segments: const [
+              ButtonSegment(value: true, label: Text('Auto (now)')),
+              ButtonSegment(value: false, label: Text('Custom')),
+            ],
+            selected: {showImmediately},
+            onSelectionChanged: (s) => onShowImmediatelyChanged(s.first),
+            style: SegmentedButton.styleFrom(
+              visualDensity: VisualDensity.compact,
+            ),
+          ),
+          if (!showImmediately) ...[
+            const SizedBox(height: 8),
+            OutlinedButton.icon(
+              onPressed: onPickShowAt,
+              icon: const Icon(Icons.calendar_today_outlined, size: 16),
+              label: Text(
+                showAt != null ? _formatDt(showAt!) : 'Pick date & time',
+              ),
+            ),
+          ],
+          const SizedBox(height: 16),
+
+          // ── Stop showing ─────────────────────────────────────────────────
+          Text('Stop showing', style: tt.labelMedium?.copyWith(color: cs.primary)),
+          const SizedBox(height: 8),
+          SegmentedButton<bool>(
+            segments: const [
+              ButtonSegment(value: true, label: Text('Manual (admin/poster)')),
+              ButtonSegment(value: false, label: Text('Auto')),
+            ],
+            selected: {hideManual},
+            onSelectionChanged: (s) => onHideManualChanged(s.first),
+            style: SegmentedButton.styleFrom(
+              visualDensity: VisualDensity.compact,
+            ),
+          ),
+          if (!hideManual) ...[
+            const SizedBox(height: 8),
+            OutlinedButton.icon(
+              onPressed: onPickHideAt,
+              icon: const Icon(Icons.event_busy_outlined, size: 16),
+              label: Text(
+                hideAt != null ? _formatDt(hideAt!) : 'Pick end date & time',
+              ),
+            ),
+          ],
+          const SizedBox(height: 16),
+
+          // ── Push notification interval ────────────────────────────────
+          Text('Push reminders', style: tt.labelMedium?.copyWith(color: cs.primary)),
+          const SizedBox(height: 8),
+          DropdownButtonFormField<int?>(
+            key: ValueKey(pushIntervalMinutes),
+            decoration: const InputDecoration(
+              border: OutlineInputBorder(),
+              isDense: true,
+              contentPadding: EdgeInsets.symmetric(horizontal: 12, vertical: 10),
+            ),
+            initialValue: pushIntervalMinutes,
+            items: _pushIntervalOptions
+                .map((opt) => DropdownMenuItem<int?>(
+                      value: opt.$1,
+                      child: Text(opt.$2),
+                    ))
+                .toList(),
+            onChanged: (v) => onIntervalChanged(v),
+          ),
+          if (pushIntervalMinutes != null)
+            Padding(
+              padding: const EdgeInsets.only(top: 6),
+              child: Text(
+                'A push notification will be sent to all visible users at this interval while the banner is active.',
+                style: tt.bodySmall?.copyWith(color: cs.onSurfaceVariant),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}
diff --git a/lib/screens/attendance/attendance_screen.dart b/lib/screens/attendance/attendance_screen.dart
index f3c36a34..853f69ce 100644
--- a/lib/screens/attendance/attendance_screen.dart
+++ b/lib/screens/attendance/attendance_screen.dart
@@ -766,7 +766,9 @@ class _CheckInTabState extends ConsumerState<_CheckInTab> {
                   (_insideGeofence || hasGeofenceOverride) &&
                   !_checkingGeofence;
 
-              return Card(
+              return Padding(
+                padding: const EdgeInsets.only(bottom: 8),
+                child: Card(
                 child: Padding(
                   padding: const EdgeInsets.all(16),
                   child: Column(
@@ -944,6 +946,7 @@ class _CheckInTabState extends ConsumerState<_CheckInTab> {
                     ],
                   ),
                 ),
+              ),
               );
             }),
         ],
@@ -5059,8 +5062,10 @@ class _PassSlipTabState extends ConsumerState<_PassSlipTab> {
         statusColor = Colors.orange;
     }
 
-    return Card(
-      child: Padding(
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 8),
+      child: Card(
+        child: Padding(
         padding: const EdgeInsets.all(12),
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.start,
@@ -5133,6 +5138,7 @@ class _PassSlipTabState extends ConsumerState<_PassSlipTab> {
           ],
         ),
       ),
+      ),
     );
   }
 
@@ -5355,7 +5361,9 @@ class _LeaveTabState extends ConsumerState<_LeaveTab> {
         statusColor = Colors.orange;
     }
 
-    return Card(
+    return Padding(
+      padding: const EdgeInsets.only(bottom: 8),
+      child: Card(
       child: Padding(
         padding: const EdgeInsets.all(12),
         child: Column(
@@ -5440,6 +5448,7 @@ class _LeaveTabState extends ConsumerState<_LeaveTab> {
           ],
         ),
       ),
+      ),
     );
   }
 
diff --git a/lib/screens/it_service_requests/it_service_requests_list_screen.dart b/lib/screens/it_service_requests/it_service_requests_list_screen.dart
index 3d76f562..8c300e08 100644
--- a/lib/screens/it_service_requests/it_service_requests_list_screen.dart
+++ b/lib/screens/it_service_requests/it_service_requests_list_screen.dart
@@ -1,9 +1,9 @@
 import 'dart:async';
+import 'dart:math' as math show min;
 
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
-import 'package:skeletonizer/skeletonizer.dart';
 
 import '../../models/it_service_request.dart';
 import '../../models/it_service_request_assignment.dart';
@@ -13,6 +13,7 @@ import '../../providers/it_service_request_provider.dart';
 import '../../providers/profile_provider.dart';
 import '../../providers/realtime_controller.dart';
 import '../../providers/tickets_provider.dart';
+import '../../theme/m3_motion.dart';
 import '../../utils/app_time.dart';
 import '../../utils/snackbar.dart';
 import '../../widgets/m3_card.dart';
@@ -100,27 +101,46 @@ class _ItServiceRequestsListScreenState
       children: [
         ResponsiveBody(
           maxWidth: double.infinity,
-          child: Skeletonizer(
-            enabled: showSkeleton,
-            child: Builder(
-              builder: (context) {
-                if (requestsAsync.hasError && !requestsAsync.hasValue) {
-                  return AppErrorView(
-                    error: requestsAsync.error!,
-                    onRetry: () =>
-                        ref.invalidate(itServiceRequestsProvider),
-                  );
-                }
-                final allRequests =
-                    requestsAsync.valueOrNull ?? <ItServiceRequest>[];
-                if (allRequests.isEmpty && !showSkeleton) {
-                  return const AppEmptyView(
-                    icon: Icons.miscellaneous_services_outlined,
-                    title: 'No service requests yet',
-                    subtitle:
-                        'IT service requests submitted by your team will appear here.',
-                  );
-                }
+          child: Builder(
+            builder: (context) {
+              if (requestsAsync.hasError && !requestsAsync.hasValue) {
+                return AppErrorView(
+                  error: requestsAsync.error!,
+                  onRetry: () =>
+                      ref.invalidate(itServiceRequestsProvider),
+                );
+              }
+              if (showSkeleton) {
+                return Column(
+                  children: [
+                    const AppPageHeader(
+                      title: 'IT Service Requests',
+                      subtitle: 'Manage and track IT support tickets',
+                    ),
+                    Expanded(
+                      child: ListView.separated(
+                        padding: const EdgeInsets.symmetric(
+                            horizontal: 16, vertical: 8),
+                        itemCount: 5,
+                        separatorBuilder: (_, _) =>
+                            const SizedBox(height: 8),
+                        itemBuilder: (_, _) =>
+                            _buildIsrShimmerCard(),
+                      ),
+                    ),
+                  ],
+                );
+              }
+              final allRequests =
+                  requestsAsync.valueOrNull ?? <ItServiceRequest>[];
+              if (allRequests.isEmpty) {
+                return const AppEmptyView(
+                  icon: Icons.miscellaneous_services_outlined,
+                  title: 'No service requests yet',
+                  subtitle:
+                      'IT service requests submitted by your team will appear here.',
+                );
+              }
                 final offices = officesAsync.valueOrNull ?? <Office>[];
                 final officesSorted = List<Office>.from(offices)
                   ..sort(
@@ -278,13 +298,12 @@ class _ItServiceRequestsListScreenState
               },
             ),
           ),
-        ),
         // FAB
         if (canCreate)
           Positioned(
             right: 16,
             bottom: 16,
-            child: FloatingActionButton.extended(
+            child: M3ExpandedFab(
               heroTag: 'create_isr',
               onPressed: () => _showCreateDialog(context),
               icon: const Icon(Icons.add),
@@ -416,6 +435,38 @@ class _ItServiceRequestsListScreenState
       if (context.mounted) showErrorSnackBar(context, 'Error: $e');
     }
   }
+
+  Widget _buildIsrShimmerCard() {
+    return M3Card.elevated(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                M3ShimmerBox(width: 80, height: 13),
+                const Spacer(),
+                M3ShimmerBox(width: 72, height: 22, borderRadius: BorderRadius.circular(11)),
+              ],
+            ),
+            const SizedBox(height: 10),
+            M3ShimmerBox(height: 16),
+            const SizedBox(height: 6),
+            M3ShimmerBox(width: 200, height: 14),
+            const SizedBox(height: 10),
+            Row(
+              children: [
+                M3ShimmerBox(width: 120, height: 12),
+                const SizedBox(width: 16),
+                M3ShimmerBox(width: 80, height: 12),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
 }
 
 // ---------------------------------------------------------------------------
@@ -561,9 +612,10 @@ class _RequestList extends StatelessWidget {
     if (requests.isEmpty) {
       return const Center(child: Text('No requests match the current filter.'));
     }
-    return ListView.builder(
-      padding: const EdgeInsets.symmetric(horizontal: 16),
+    return ListView.separated(
+      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
       itemCount: requests.length,
+      separatorBuilder: (_, _) => const SizedBox(height: 8),
       itemBuilder: (context, index) {
         final request = requests[index];
         final assignedStaff = assignments
@@ -573,10 +625,13 @@ class _RequestList extends StatelessWidget {
         final office = request.officeId != null
             ? officeById[request.officeId]?.name
             : null;
-        return _RequestTile(
-          request: request,
-          officeName: office,
-          assignedStaff: assignedStaff,
+        return M3FadeSlideIn(
+          delay: Duration(milliseconds: math.min(index, 8) * 50),
+          child: _RequestTile(
+            request: request,
+            officeName: office,
+            assignedStaff: assignedStaff,
+          ),
         );
       },
     );
diff --git a/lib/screens/workforce/workforce_screen.dart b/lib/screens/workforce/workforce_screen.dart
index d640ccb2..7396191c 100644
--- a/lib/screens/workforce/workforce_screen.dart
+++ b/lib/screens/workforce/workforce_screen.dart
@@ -203,24 +203,29 @@ class _SchedulePanel extends ConsumerWidget {
                               ?.copyWith(fontWeight: FontWeight.w700),
                         ),
                         const SizedBox(height: 8),
-                        ...items.map(
-                          (schedule) => _ScheduleTile(
-                            schedule: schedule,
-                            displayName: _scheduleName(
-                              profileById,
-                              schedule,
-                              isAdmin,
-                              rotationConfig,
+                        for (int i = 0; i < items.length; i++)
+                          M3FadeSlideIn(
+                            delay: Duration(milliseconds: i * 40),
+                            child: Padding(
+                              padding: const EdgeInsets.only(bottom: 8),
+                              child: _ScheduleTile(
+                                schedule: items[i],
+                                displayName: _scheduleName(
+                                  profileById,
+                                  items[i],
+                                  isAdmin,
+                                  rotationConfig,
+                                ),
+                                relieverLabels: _relieverLabelsFromIds(
+                                  items[i].relieverIds,
+                                  profileById,
+                                ),
+                                isMine: items[i].userId == currentUserId,
+                                isAdmin: isAdmin,
+                                role: profileById[items[i].userId]?.role,
+                              ),
                             ),
-                            relieverLabels: _relieverLabelsFromIds(
-                              schedule.relieverIds,
-                              profileById,
-                            ),
-                            isMine: schedule.userId == currentUserId,
-                            isAdmin: isAdmin,
-                            role: profileById[schedule.userId]?.role,
                           ),
-                        ),
                       ],
                     ),
                   );
diff --git a/lib/widgets/announcement_banner.dart b/lib/widgets/announcement_banner.dart
new file mode 100644
index 00000000..7206188f
--- /dev/null
+++ b/lib/widgets/announcement_banner.dart
@@ -0,0 +1,128 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:go_router/go_router.dart';
+
+import '../providers/announcements_provider.dart';
+
+/// A persistent, globally visible banner that appears at the top of every
+/// authenticated screen when one or more [Announcement]s have an active banner.
+///
+/// Mirrors the pattern used by [PassSlipCountdownBanner] and
+/// [ShiftCountdownBanner]. Registered in [_ShellBackground] so it wraps all
+/// shell-route screens.
+///
+/// Tapping the banner navigates to `/announcements`. The X button dismisses
+/// the leading announcement for the current session; if more remain they
+/// continue to be shown.
+class AnnouncementBanner extends ConsumerStatefulWidget {
+  const AnnouncementBanner({required this.child, super.key});
+
+  final Widget child;
+
+  @override
+  ConsumerState<AnnouncementBanner> createState() =>
+      _AnnouncementBannerState();
+}
+
+class _AnnouncementBannerState extends ConsumerState<AnnouncementBanner> {
+  /// IDs of banners the user has dismissed for this session.
+  final Set<String> _sessionDismissed = {};
+
+  @override
+  Widget build(BuildContext context) {
+    final visible = ref
+        .watch(activeBannerAnnouncementsProvider)
+        .where((a) => !_sessionDismissed.contains(a.id))
+        .toList();
+
+    if (visible.isEmpty) return widget.child;
+
+    final first = visible.first;
+    final extra = visible.length - 1;
+
+    final cs = Theme.of(context).colorScheme;
+    final tt = Theme.of(context).textTheme;
+
+    return Column(
+      children: [
+        Material(
+          child: InkWell(
+            onTap: () => context.go('/announcements'),
+            child: Container(
+              width: double.infinity,
+              padding:
+                  const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+              decoration: BoxDecoration(color: cs.primaryContainer),
+              child: Row(
+                crossAxisAlignment: CrossAxisAlignment.center,
+                children: [
+                  Icon(
+                    Icons.campaign_rounded,
+                    size: 22,
+                    color: cs.onPrimaryContainer,
+                  ),
+                  const SizedBox(width: 10),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        Text(
+                          extra > 0
+                              ? 'Announcement  ·  +$extra more'
+                              : 'Announcement',
+                          style: tt.labelSmall?.copyWith(
+                            color:
+                                cs.onPrimaryContainer.withValues(alpha: 0.75),
+                            letterSpacing: 0.3,
+                          ),
+                        ),
+                        const SizedBox(height: 1),
+                        Text(
+                          first.title,
+                          style: tt.bodyMedium?.copyWith(
+                            color: cs.onPrimaryContainer,
+                            fontWeight: FontWeight.w600,
+                          ),
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ],
+                    ),
+                  ),
+                  Text(
+                    'Tap to view',
+                    style: tt.bodySmall?.copyWith(
+                      color: cs.onPrimaryContainer.withValues(alpha: 0.7),
+                    ),
+                  ),
+                  Icon(
+                    Icons.chevron_right,
+                    size: 18,
+                    color: cs.onPrimaryContainer.withValues(alpha: 0.7),
+                  ),
+                  const SizedBox(width: 4),
+                  // Dismiss for session
+                  InkWell(
+                    borderRadius: BorderRadius.circular(16),
+                    onTap: () =>
+                        setState(() => _sessionDismissed.add(first.id)),
+                    child: Padding(
+                      padding: const EdgeInsets.all(4),
+                      child: Icon(
+                        Icons.close,
+                        size: 18,
+                        color: cs.onPrimaryContainer,
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+        Expanded(child: widget.child),
+      ],
+    );
+  }
+}
diff --git a/lib/widgets/app_shell.dart b/lib/widgets/app_shell.dart
index 42f97f43..512c6704 100644
--- a/lib/widgets/app_shell.dart
+++ b/lib/widgets/app_shell.dart
@@ -8,6 +8,7 @@ import 'package:go_router/go_router.dart';
 import '../providers/auth_provider.dart';
 import '../providers/notifications_provider.dart';
 import '../providers/profile_provider.dart';
+import 'announcement_banner.dart';
 import 'app_breakpoints.dart';
 import 'profile_avatar.dart';
 import 'pass_slip_countdown_banner.dart';
@@ -331,7 +332,9 @@ class _ShellBackground extends StatelessWidget {
     return ColoredBox(
       color: Theme.of(context).scaffoldBackgroundColor,
       child: ShiftCountdownBanner(
-        child: PassSlipCountdownBanner(child: child),
+        child: PassSlipCountdownBanner(
+          child: AnnouncementBanner(child: child),
+        ),
       ),
     );
   }
diff --git a/supabase/functions/process_scheduled_notifications/index.ts b/supabase/functions/process_scheduled_notifications/index.ts
index bbf2997e..acbaeefb 100644
--- a/supabase/functions/process_scheduled_notifications/index.ts
+++ b/supabase/functions/process_scheduled_notifications/index.ts
@@ -63,15 +63,46 @@ async function processBatch() {
     return
   }
 
+  // Deduplicate announcement_banner rows: for each (announcement_id, user_id)
+  // pair, keep only the row with the highest epoch and immediately mark older
+  // ones as processed without sending FCM. This prevents double-pushes caused
+  // by stale rows from previous epochs appearing alongside the current epoch's
+  // row (e.g. if scheduled_for was set to now() instead of the next boundary,
+  // or if a pg_cron cycle was missed leaving old rows unprocessed).
+  const annBannerBest = new Map<string, any>()
+  const staleIds: string[] = []
   for (const r of rows) {
+    if (r.notify_type !== 'announcement_banner' || !r.announcement_id) continue
+    const key = `${r.announcement_id}:${r.user_id}`
+    const best = annBannerBest.get(key)
+    if (!best || (r.epoch ?? 0) > (best.epoch ?? 0)) {
+      if (best) staleIds.push(best.id)
+      annBannerBest.set(key, r)
+    } else {
+      staleIds.push(r.id)
+    }
+  }
+  if (staleIds.length > 0) {
+    console.log(`Skipping ${staleIds.length} stale announcement_banner row(s)`)
+    await supabase
+      .from('scheduled_notifications')
+      .update({ processed: true, processed_at: new Date().toISOString() })
+      .in('id', staleIds)
+  }
+  const staleSet = new Set(staleIds)
+
+  for (const r of rows.filter((r: any) => !staleSet.has(r.id))) {
     try {
       const scheduleId = r.schedule_id
       const userId = r.user_id
       const notifyType = r.notify_type
       const rowId = r.id
 
-      // Build a unique ID that accounts for all reference columns + epoch
-      const idSource = `${scheduleId || ''}-${r.task_id || ''}-${r.it_service_request_id || ''}-${r.pass_slip_id || ''}-${userId}-${notifyType}-${r.epoch || 0}`
+      // Build a unique ID that accounts for all reference columns + epoch.
+      // announcement_id is included so that concurrent banner announcements
+      // targeting the same user+epoch get distinct notificationIds — without
+      // it, try_mark_notification_pushed would silently drop the second one.
+      const idSource = `${scheduleId || ''}-${r.task_id || ''}-${r.it_service_request_id || ''}-${r.pass_slip_id || ''}-${r.announcement_id || ''}-${userId}-${notifyType}-${r.epoch || 0}`
       const notificationId = await uuidFromName(idSource)
 
       // Idempotency is handled by send_fcm via try_mark_notification_pushed.
@@ -91,6 +122,7 @@ async function processBatch() {
       if (r.task_id) data.task_id = r.task_id
       if (r.it_service_request_id) data.it_service_request_id = r.it_service_request_id
       if (r.pass_slip_id) data.pass_slip_id = r.pass_slip_id
+      if (r.announcement_id) data.announcement_id = r.announcement_id
 
       switch (notifyType) {
         case 'start_15':
@@ -148,6 +180,23 @@ async function processBatch() {
           body = 'Your pass slip has exceeded the 1-hour limit. Please return and complete it immediately.'
           data.navigate_to = '/attendance'
           break
+        case 'announcement_banner': {
+          const { data: ann } = await supabase
+            .from('announcements')
+            .select('title')
+            .eq('id', r.announcement_id)
+            .single()
+          const rawTitle = ann?.title ?? ''
+          const displayTitle = rawTitle.length > 80
+            ? rawTitle.substring(0, 80) + '\u2026'
+            : rawTitle
+          title = 'Announcement Reminder'
+          body = displayTitle
+            ? `"${displayTitle}" — Please tap to review this announcement.`
+            : 'You have a pending announcement that requires your attention. Tap to view it.'
+          data.navigate_to = '/announcements'
+          break
+        }
         default:
           title = 'Reminder'
           body = 'You have a pending notification.'
diff --git a/supabase/functions/send_fcm/index.ts b/supabase/functions/send_fcm/index.ts
index b1d8b404..14049f53 100644
--- a/supabase/functions/send_fcm/index.ts
+++ b/supabase/functions/send_fcm/index.ts
@@ -38,11 +38,17 @@ Deno.serve(async (req) => {
       })
     }
 
-    // Optional Idempotency (if you pass notification_id inside the data payload)
+    // Idempotency: if notification_id is provided, use try_mark_notification_pushed
+    // to ensure at-most-once delivery even under concurrent edge-function invocations.
     if (payload.data && payload.data.notification_id) {
       const { data: markData, error: markErr } = await supabase
         .rpc('try_mark_notification_pushed', { p_notification_id: payload.data.notification_id })
-      
+
+      if (markErr) {
+        console.error('try_mark_notification_pushed RPC error, skipping to be safe:', markErr)
+        return new Response('Idempotency check failed', { status: 200, headers: corsHeaders })
+      }
+
       if (markData === false) {
         console.log('Notification already pushed, skipping:', payload.data.notification_id)
         return new Response('Already pushed', { status: 200, headers: corsHeaders })
diff --git a/supabase/migrations/20260322210000_announcement_banner.sql b/supabase/migrations/20260322210000_announcement_banner.sql
new file mode 100644
index 00000000..d40cca03
--- /dev/null
+++ b/supabase/migrations/20260322210000_announcement_banner.sql
@@ -0,0 +1,133 @@
+-- Migration: Banner notification support for announcements
+-- Adds banner_enabled, show/hide times, and scheduled push intervals.
+-- Hooks into the existing scheduled_notifications queue + pg_cron pipeline.
+
+-- ============================================================================
+-- 1. Banner columns on announcements
+-- ============================================================================
+ALTER TABLE public.announcements
+  ADD COLUMN IF NOT EXISTS banner_enabled       boolean    NOT NULL DEFAULT false,
+  ADD COLUMN IF NOT EXISTS banner_show_at       timestamptz,          -- null = show immediately
+  ADD COLUMN IF NOT EXISTS banner_hide_at       timestamptz,          -- null = manual off only
+  ADD COLUMN IF NOT EXISTS push_interval_minutes integer;             -- null = no scheduled push
+
+-- Partial index: only index rows with active banners
+CREATE INDEX IF NOT EXISTS idx_announcements_banner_active
+  ON public.announcements (banner_show_at, banner_hide_at)
+  WHERE banner_enabled = true AND push_interval_minutes IS NOT NULL;
+
+-- ============================================================================
+-- 2. Extend scheduled_notifications with announcement_id
+-- ============================================================================
+ALTER TABLE public.scheduled_notifications
+  ADD COLUMN IF NOT EXISTS announcement_id uuid
+    REFERENCES public.announcements(id) ON DELETE CASCADE;
+
+CREATE INDEX IF NOT EXISTS idx_sched_notif_announcement
+  ON public.scheduled_notifications(announcement_id)
+  WHERE announcement_id IS NOT NULL;
+
+-- 2a. Rebuild unique index to include announcement_id
+DROP INDEX IF EXISTS uniq_sched_notif;
+
+CREATE UNIQUE INDEX IF NOT EXISTS uniq_sched_notif ON public.scheduled_notifications (
+  COALESCE(schedule_id,             '00000000-0000-0000-0000-000000000000'),
+  COALESCE(task_id,                 '00000000-0000-0000-0000-000000000000'),
+  COALESCE(it_service_request_id,   '00000000-0000-0000-0000-000000000000'),
+  COALESCE(pass_slip_id,            '00000000-0000-0000-0000-000000000000'),
+  COALESCE(announcement_id,         '00000000-0000-0000-0000-000000000000'),
+  user_id,
+  notify_type,
+  epoch
+);
+
+-- 2b. Update CHECK constraint to allow announcement-only rows
+ALTER TABLE public.scheduled_notifications
+  DROP CONSTRAINT IF EXISTS chk_at_least_one_ref;
+
+ALTER TABLE public.scheduled_notifications
+  ADD CONSTRAINT chk_at_least_one_ref CHECK (
+    schedule_id           IS NOT NULL
+    OR task_id            IS NOT NULL
+    OR it_service_request_id IS NOT NULL
+    OR pass_slip_id       IS NOT NULL
+    OR announcement_id    IS NOT NULL
+  );
+
+-- ============================================================================
+-- 3. Enqueue function for banner announcement push notifications
+-- ============================================================================
+-- Called by enqueue_all_notifications() every minute via pg_cron.
+-- For each active banner announcement with a push interval, inserts one
+-- scheduled_notification per target user per interval epoch.
+-- epoch = floor(unix_seconds / interval_seconds) ensures exactly one push
+-- per user per interval window with ON CONFLICT DO NOTHING idempotency.
+CREATE OR REPLACE FUNCTION public.enqueue_announcement_banner_notifications()
+RETURNS void LANGUAGE plpgsql AS $$
+DECLARE
+  ann      RECORD;
+  usr      RECORD;
+  v_epoch  int;
+BEGIN
+  FOR ann IN
+    SELECT a.id, a.author_id, a.visible_roles, a.push_interval_minutes
+    FROM   public.announcements a
+    WHERE  a.banner_enabled           = true
+      AND  a.push_interval_minutes   IS NOT NULL
+      AND  a.is_template             = false
+      AND  (a.banner_show_at IS NULL OR a.banner_show_at <= now())
+      AND  (a.banner_hide_at IS NULL OR a.banner_hide_at  > now())
+  LOOP
+    -- One epoch per interval window; prevents duplicate pushes within the window
+    v_epoch := FLOOR(
+      EXTRACT(EPOCH FROM now()) / (ann.push_interval_minutes * 60)
+    )::int;
+
+    -- Purge rows that are ≥2 epochs stale (unprocessed due to missed cycles).
+    -- We keep epoch = v_epoch - 1 because that row's scheduled_for falls
+    -- exactly at the current epoch boundary and is about to be processed.
+    -- Deleting epoch < v_epoch would remove rows that are due RIGHT NOW
+    -- (epoch E's row has scheduled_for = (E+1)*interval = now), causing
+    -- all notifications to stop firing.
+    DELETE FROM public.scheduled_notifications
+    WHERE  announcement_id = ann.id
+      AND  notify_type     = 'announcement_banner'
+      AND  processed       = false
+      AND  epoch           < v_epoch - 1;
+
+    FOR usr IN
+      SELECT p.id
+      FROM   public.profiles p
+      WHERE  p.role::text = ANY(ann.visible_roles)
+        AND  p.id <> ann.author_id
+    LOOP
+      INSERT INTO public.scheduled_notifications
+        (announcement_id, user_id, notify_type, scheduled_for, epoch)
+      VALUES
+        (ann.id, usr.id, 'announcement_banner',
+         to_timestamp(((v_epoch + 1)::bigint * ann.push_interval_minutes * 60)),
+         v_epoch)
+      ON CONFLICT DO NOTHING;
+    END LOOP;
+  END LOOP;
+END;
+$$;
+
+-- ============================================================================
+-- 4. Re-register master dispatcher to include banner announcements
+-- ============================================================================
+CREATE OR REPLACE FUNCTION public.enqueue_all_notifications()
+RETURNS void LANGUAGE plpgsql AS $$
+BEGIN
+  PERFORM public.enqueue_due_shift_notifications();
+  PERFORM public.enqueue_overtime_idle_notifications();
+  PERFORM public.enqueue_overtime_checkout_notifications();
+  PERFORM public.enqueue_isr_event_notifications();
+  PERFORM public.enqueue_isr_evidence_notifications();
+  PERFORM public.enqueue_paused_task_notifications();
+  PERFORM public.enqueue_backlog_notifications();
+  PERFORM public.enqueue_pass_slip_expiry_notifications();
+  PERFORM public.enqueue_pass_slip_expired_notifications();      -- added in 20260322150000; kept here
+  PERFORM public.enqueue_announcement_banner_notifications();    -- added in this migration
+END;
+$$;
diff --git a/supabase/migrations/20260322220000_fix_announcement_banner_enqueue.sql b/supabase/migrations/20260322220000_fix_announcement_banner_enqueue.sql
new file mode 100644
index 00000000..64f9c745
--- /dev/null
+++ b/supabase/migrations/20260322220000_fix_announcement_banner_enqueue.sql
@@ -0,0 +1,84 @@
+-- Fix: eliminate double push notifications for announcement banners.
+--
+-- Root causes addressed:
+--   1. scheduled_for = now() made rows immediately eligible. Multiple consecutive
+--      epoch rows (e.g. E and E+1) all had scheduled_for in the past, so all were
+--      eligible simultaneously. ON CONFLICT DO NOTHING kept the old rows intact
+--      (didn't update scheduled_for to the future), so every processBatch run
+--      found 2+ eligible rows → 2+ FCM sends.
+--      Fix A (SQL): scheduled_for = start of the NEXT epoch window (future).
+--      Fix B (SQL): one-time DELETE of all pre-existing stale rows so the queue
+--                   starts clean. The edge function deduplication (Fix C) also
+--                   guards against any future accumulation.
+--      Fix C (TS):  processBatch deduplicates announcement_banner rows by
+--                   (announcement_id, user_id), keeping only the highest-epoch
+--                   row and marking stale ones processed without sending FCM.
+--
+--   2. epoch < v_epoch (too aggressive) deleted epoch E's row at the start of
+--      epoch E+1 — the row that was due RIGHT NOW — stopping all notifications.
+--      Fix: epoch < v_epoch - 1 keeps epoch E intact for processing.
+
+-- ============================================================================
+-- One-time cleanup: mark all pre-existing stale announcement_banner rows as
+-- processed so they are no longer eligible. These were inserted with the old
+-- scheduled_for = now() logic and have scheduled_for in the past, causing them
+-- to appear in every processBatch query and generate duplicate pushes.
+-- ============================================================================
+DELETE FROM public.scheduled_notifications
+WHERE notify_type = 'announcement_banner'
+  AND processed   = false;
+
+CREATE OR REPLACE FUNCTION public.enqueue_announcement_banner_notifications()
+RETURNS void LANGUAGE plpgsql AS $$
+DECLARE
+  ann      RECORD;
+  usr      RECORD;
+  v_epoch  int;
+BEGIN
+  FOR ann IN
+    SELECT a.id, a.author_id, a.visible_roles, a.push_interval_minutes
+    FROM   public.announcements a
+    WHERE  a.banner_enabled           = true
+      AND  a.push_interval_minutes   IS NOT NULL
+      AND  a.is_template             = false
+      AND  (a.banner_show_at IS NULL OR a.banner_show_at <= now())
+      AND  (a.banner_hide_at IS NULL OR a.banner_hide_at  > now())
+  LOOP
+    -- One epoch per interval window; prevents duplicate pushes within the window.
+    v_epoch := FLOOR(
+      EXTRACT(EPOCH FROM now()) / (ann.push_interval_minutes * 60)
+    )::int;
+
+    -- Purge rows that are ≥2 epochs stale (unprocessed due to missed cycles).
+    -- We keep epoch = v_epoch - 1 because that row's scheduled_for falls
+    -- exactly at the current epoch boundary and is about to be processed.
+    -- Deleting epoch < v_epoch would remove rows that are due RIGHT NOW
+    -- (epoch E's row has scheduled_for = (E+1)*interval = now), causing
+    -- all notifications to stop firing — which is the bug this replaces.
+    DELETE FROM public.scheduled_notifications
+    WHERE  announcement_id = ann.id
+      AND  notify_type     = 'announcement_banner'
+      AND  processed       = false
+      AND  epoch           < v_epoch - 1;
+
+    FOR usr IN
+      SELECT p.id
+      FROM   public.profiles p
+      WHERE  p.role::text = ANY(ann.visible_roles)
+        AND  p.id <> ann.author_id
+    LOOP
+      -- scheduled_for = start of the NEXT epoch window (not now()).
+      -- This guarantees the row only becomes eligible AFTER the current
+      -- epoch ends, so a concurrent or delayed edge-function instance can
+      -- never see two different epochs' rows as simultaneously due.
+      INSERT INTO public.scheduled_notifications
+        (announcement_id, user_id, notify_type, scheduled_for, epoch)
+      VALUES
+        (ann.id, usr.id, 'announcement_banner',
+         to_timestamp(((v_epoch + 1)::bigint * ann.push_interval_minutes * 60)),
+         v_epoch)
+      ON CONFLICT DO NOTHING;
+    END LOOP;
+  END LOOP;
+END;
+$$;
diff --git a/supabase/migrations/20260322_finalize_notification_functions.sql b/supabase/migrations/20260322_finalize_notification_functions.sql
index 9a568a08..b56d35ff 100644
--- a/supabase/migrations/20260322_finalize_notification_functions.sql
+++ b/supabase/migrations/20260322_finalize_notification_functions.sql
@@ -353,6 +353,10 @@ $$;
 -- ============================================================================
 -- MASTER DISPATCHER
 -- ============================================================================
+-- NOTE: This file has an underscore at position 9 of its filename, which makes
+-- it sort AFTER all 20260322NNNNNN_* files (underscore ASCII 95 > digits 48-57).
+-- It therefore runs LAST among all 20260322 migrations and must include every
+-- enqueue function defined by those earlier migrations.
 CREATE OR REPLACE FUNCTION public.enqueue_all_notifications()
 RETURNS void LANGUAGE plpgsql AS $$
 BEGIN
@@ -364,6 +368,8 @@ BEGIN
   PERFORM public.enqueue_paused_task_notifications();
   PERFORM public.enqueue_backlog_notifications();
   PERFORM public.enqueue_pass_slip_expiry_notifications();
+  PERFORM public.enqueue_pass_slip_expired_notifications();      -- added in 20260322150000
+  PERFORM public.enqueue_announcement_banner_notifications();    -- added in 20260322210000
 END;
 $$;
 
diff --git a/supabase/migrations/20260323000000_fix_enqueue_all_notifications.sql b/supabase/migrations/20260323000000_fix_enqueue_all_notifications.sql
new file mode 100644
index 00000000..afacaafc
--- /dev/null
+++ b/supabase/migrations/20260323000000_fix_enqueue_all_notifications.sql
@@ -0,0 +1,30 @@
+-- Migration: Definitive enqueue_all_notifications() dispatcher
+--
+-- WHY THIS EXISTS:
+--   20260322_finalize_notification_functions.sql has an underscore at character
+--   position 9 of its filename, which sorts AFTER all 20260322NNNNNN_* files
+--   (underscore ASCII 95 > digits ASCII 48-57). This means _finalize_ always
+--   runs LAST in the 20260322 group, overriding enqueue_all_notifications()
+--   with a version that omits:
+--     - enqueue_announcement_banner_notifications()  (added in 20260322210000)
+--     - enqueue_pass_slip_expired_notifications()    (added in 20260322150000)
+--
+--   This migration (20260323000000) sorts AFTER all 20260322* files and
+--   redefines enqueue_all_notifications() as the single authoritative definition
+--   that includes all 10 notification types.
+
+CREATE OR REPLACE FUNCTION public.enqueue_all_notifications()
+RETURNS void LANGUAGE plpgsql AS $$
+BEGIN
+  PERFORM public.enqueue_due_shift_notifications();
+  PERFORM public.enqueue_overtime_idle_notifications();
+  PERFORM public.enqueue_overtime_checkout_notifications();
+  PERFORM public.enqueue_isr_event_notifications();
+  PERFORM public.enqueue_isr_evidence_notifications();
+  PERFORM public.enqueue_paused_task_notifications();
+  PERFORM public.enqueue_backlog_notifications();
+  PERFORM public.enqueue_pass_slip_expiry_notifications();
+  PERFORM public.enqueue_pass_slip_expired_notifications();
+  PERFORM public.enqueue_announcement_banner_notifications();
+END;
+$$;