feat(notifications): Add notifications for releases and announcements

- notify_all_users_release(): Notify all users about new system version
- notify_all_users_announcement(): Notify all users about new announcement
- Auto-send notifications when admin publishes an announcement
- New admin endpoint POST /admin/notify-release for manual release notifications
- Category-specific icons for announcement notifications

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app.py

@@ -9610,6 +9610,32 @@ def release_notes():
     return render_template('release_notes.html', releases=releases, stats=stats)
 
 
+@app.route('/admin/notify-release', methods=['POST'])
+@login_required
+def admin_notify_release():
+    """
+    Send notifications to all users about a new release.
+    Called manually by admin after deploying a new version.
+    """
+    if not current_user.is_admin:
+        return jsonify({'success': False, 'error': 'Brak uprawnień'}), 403
+
+    data = request.get_json() or {}
+    version = data.get('version')
+    highlights = data.get('highlights', [])
+
+    if not version:
+        return jsonify({'success': False, 'error': 'Brak wersji'}), 400
+
+    from utils.notifications import notify_all_users_release
+    count = notify_all_users_release(version=version, highlights=highlights)
+
+    return jsonify({
+        'success': True,
+        'message': f'Wysłano {count} powiadomień o wersji {version}'
+    })
+
+
 # ============================================================
 # ZIELONY OKRĘG PRZEMYSŁOWY KASZUBIA (ZOPK)
 # ============================================================
@@ -13267,7 +13293,16 @@ def admin_announcements_publish(id):
         announcement.updated_at = datetime.now()
         db.commit()
 
-        return jsonify({'success': True, 'message': 'Ogłoszenie zostało opublikowane'})
+        # Notify all users about new announcement
+        from utils.notifications import notify_all_users_announcement
+        notify_count = notify_all_users_announcement(
+            announcement_id=announcement.id,
+            title=announcement.title,
+            category=announcement.category
+        )
+        logger.info(f"Sent {notify_count} notifications for announcement: {announcement.title}")
+
+        return jsonify({'success': True, 'message': f'Ogłoszenie zostało opublikowane. Wysłano {notify_count} powiadomień.'})
 
     except Exception as e:
         db.rollback()

utils/__init__.py

@@ -11,7 +11,9 @@ from .notifications import (
     create_notification,
     create_news_notification,
     create_message_notification,
-    create_event_notification
+    create_event_notification,
+    notify_all_users_release,
+    notify_all_users_announcement
 )
 from .analytics import (
     get_or_create_analytics_session,

utils/notifications.py

@@ -121,3 +121,101 @@ def create_event_notification(user_id, event_title, event_id):
         related_id=event_id,
         action_url=f"/kalendarz/{event_id}"
     )
+
+
+def notify_all_users_release(version, highlights=None):
+    """
+    Notify all active users about a new system release.
+
+    Args:
+        version: Version string (e.g., 'v1.17.0')
+        highlights: Optional list of key changes to include in notification
+
+    Returns:
+        Number of notifications created
+    """
+    db = SessionLocal()
+    try:
+        # Get all active users
+        users = db.query(User).filter(User.is_active == True).all()
+
+        message = f"Wersja {version} jest już dostępna."
+        if highlights:
+            # Include first 2 highlights
+            message += " Nowości: " + ", ".join(highlights[:2])
+            if len(highlights) > 2:
+                message += f" (+{len(highlights) - 2} więcej)"
+
+        count = 0
+        for user in users:
+            result = create_notification(
+                user_id=user.id,
+                title=f"🚀 Nowa wersja systemu {version}",
+                message=message,
+                notification_type='system',
+                related_type='release',
+                related_id=None,
+                action_url='/release-notes'
+            )
+            if result:
+                count += 1
+
+        logger.info(f"Created {count} release notifications for version {version}")
+        return count
+
+    except Exception as e:
+        logger.error(f"Error creating release notifications: {e}")
+        return 0
+    finally:
+        db.close()
+
+
+def notify_all_users_announcement(announcement_id, title, category=None):
+    """
+    Notify all active users about a new announcement.
+
+    Args:
+        announcement_id: ID of the announcement
+        title: Title of the announcement
+        category: Optional category for context
+
+    Returns:
+        Number of notifications created
+    """
+    db = SessionLocal()
+    try:
+        # Get all active users
+        users = db.query(User).filter(User.is_active == True).all()
+
+        # Category-specific icons
+        category_icons = {
+            'general': '📢',
+            'event': '📅',
+            'business_opportunity': '💼',
+            'member_news': '👥',
+            'partnership': '🤝'
+        }
+        icon = category_icons.get(category, '📢')
+
+        count = 0
+        for user in users:
+            result = create_notification(
+                user_id=user.id,
+                title=f"{icon} Nowe ogłoszenie w Aktualnościach",
+                message=title[:100] + ('...' if len(title) > 100 else ''),
+                notification_type='news',
+                related_type='announcement',
+                related_id=announcement_id,
+                action_url=f'/ogloszenia/{announcement_id}'
+            )
+            if result:
+                count += 1
+
+        logger.info(f"Created {count} announcement notifications for: {title[:50]}")
+        return count
+
+    except Exception as e:
+        logger.error(f"Error creating announcement notifications: {e}")
+        return 0
+    finally:
+        db.close()