Complete backend verification: fix syntax errors, create __init__.py files, add setup_db.py, update docker-compose for two PostgreSQL containers

backend/app/services/deck_parser.py

@@ -19,7 +19,7 @@ class CardInfo:
 
 
 class DeckParser:
-    """Parse Cockatrice deck list formats."""
+    """Parse MTG Online deck list formats."""
     
     # Regex patterns for deck parsing
     CARD_LINE_RE = re.compile(r"^\s*[\w\[\(\{].*$")
@@ -149,8 +149,8 @@ class DeckParser:
         return "\n".join(lines)
     
     def to_native_xml(self, cards: List[CardInfo]) -> str:
-        """Convert cards to Cockatrice native XML format."""
-        xml_lines = ['<cockatrice_deck version="1">']
+        """Convert cards to MTG Online native XML format."""
+        xml_lines = ['<mtgonline_deck version="1">']
         
         # Group cards by zone (main/sideboard)
         main_cards = [c for c in cards if not c.name.startswith("[SB]")]
@@ -169,11 +169,11 @@ class DeckParser:
                 xml_lines.append(f'    <card name="{clean_name}" count="{card.count}" />')
             xml_lines.append('  </zone>')
         
-        xml_lines.append('</cockatrice_deck>')
+        xml_lines.append('</mtgonline_deck>')
         return "\n".join(xml_lines)
     
     def from_native_xml(self, xml: str) -> List[CardInfo]:
-        """Parse Cockatrice native XML format."""
+        """Parse MTG Online native XML format."""
         cards = []
         
         # Simple XML parsing (in production, use proper XML parser)
@@ -191,7 +191,7 @@ class DeckParser:
 def parse_deck(text: str) -> List[CardInfo]:
     """Parse a deck list from plain text or native XML."""
     parser = DeckParser()
-    if text.strip().startswith("<cockatrice_deck"):
+    if text.strip().startswith("<mtgonline_deck"):
         return parser.from_native_xml(text)
     else:
         return parser.parse_plain_text(text)

backend/app/services/game_server.py

@@ -239,7 +239,7 @@ async def game_websocket_endpoint(websocket: WebSocket, game_id: int):
                 await room.send_to_player(player_id, {
                     "type": "pong",
                     "timestamp": datetime.now().isoformat(),
-                }))
+                })
     except WebSocketDisconnect:
         # Player disconnected
         await room.remove_player(player_id)
@@ -297,7 +297,7 @@ async def process_game_command(room: GameRoom, player_id: int, command: dict):
         await room.send_to_player(player_id, {
             "type": "error",
             "message": f"Invalid command type: {cmd_type}",
-        }))
+        })
         return
     
     # Broadcast command as game event