feat: flat design Sunset Glitch + download manager + settings + recommendations overhaul

- Sunset Glitch color palette applied to all templates
- Font Awesome icons throughout UI
- Download manager with parallel queue and progress tracking
- Settings page with dynamic configuration
- Recommendations router enhanced with scoring
- Local vendor libs (Alpine.js, HTMX) for offline support
- Auto test suite with screenshots
- Series releases list component
- New download model

main.py

@@ -86,12 +86,17 @@ async def startup_event():
 
 
 def restore_completed_downloads():
-    """Scan downloads directory and restore completed download tasks"""
+    """Restore download tasks: first from the database, then scan for untracked files."""
+    # Step 1: Load persisted tasks from database
+    download_manager._load_tasks_from_db()
+
+    # Step 2: Scan downloads directory for files not yet tracked in the database
     download_dir = Path("downloads")
     if not download_dir.exists():
         return
 
     video_extensions = {".mp4", ".mkv", ".avi", ".mov", ".wmv", ".flv", ".webm"}
+    tracked_filenames = {t.filename for t in download_manager.tasks.values()}
 
     for file_path in download_dir.iterdir():
         if file_path.is_file() and file_path.suffix.lower() in video_extensions:
@@ -99,6 +104,11 @@ def restore_completed_downloads():
                 continue
 
             filename = file_path.name
+
+            # Skip if already tracked in DB
+            if filename in tracked_filenames:
+                continue
+
             file_size = file_path.stat().st_size
 
             task_id = str(uuid.uuid4())
@@ -118,7 +128,8 @@ def restore_completed_downloads():
             )
 
             download_manager.tasks[task_id] = task
-            logger.info(f"Restored completed download: {filename}")
+            download_manager._save_task_to_db(task)
+            logger.info(f"Restored untracked completed download: {filename}")
 
 
 # Restore completed downloads on startup