feat: homelab deployment - NPM + IONOS DNS + monitoring + NAS backup

- Restructured docker-compose for Nginx Proxy Manager (no custom nginx)
- Added domain wordly.art configuration
- Added Prometheus + Grafana monitoring stack with pre-configured dashboards
- Added PostgreSQL backup script to NAS (daily/weekly/monthly rotation)
- Added alert rules for backend, system, and Docker metrics
- Updated deployment guide for NPM + IONOS DNS homelab setup
- Added marketing plan document
- PDF translator and watermark support
- Enhanced middleware, routes, and translator modules

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

routes/admin_routes.py

@@ -592,6 +592,34 @@ async def get_tracked_files(is_admin: bool = Depends(require_admin)):
     return {"count": len(tracked), "files": tracked}
 
 
+@router.post("/quota/reset")
+async def reset_translation_quotas(is_admin: bool = Depends(require_admin)):
+    """Reset monthly translation quotas for all free-tier users.
+    Clears Redis keys matching quota:monthly:*
+    """
+    try:
+        from core.redis import get_async_redis
+        redis_client = get_async_redis()
+        if not redis_client:
+            return {"status": "skipped", "message": "Redis not available, quotas are in-memory only"}
+
+        # Find all monthly quota keys
+        keys = []
+        async for key in redis_client.scan_iter(match="quota:monthly:*"):
+            keys.append(key)
+
+        if keys:
+            deleted = await redis_client.delete(*keys)
+            logger.info("admin_quota_reset", keys_deleted=deleted)
+            return {"status": "success", "keys_deleted": deleted, "message": f"Reset {deleted} quota counters"}
+        else:
+            return {"status": "success", "keys_deleted": 0, "message": "No active quotas to reset"}
+
+    except Exception as e:
+        logger.error(f"Admin quota reset failed: {str(e)}")
+        raise HTTPException(status_code=500, detail=f"Quota reset failed: {str(e)}")
+
+
 @router.post("/config/provider")
 async def update_default_provider(
     provider: str = Form(...),