fix: P0+P1 audit — memory leak, hardcoded camera/GPS, lifespan init, background processing, batch validation, ABC interfaces

src/gps_denied/core/chunk_manager.py

@@ -1,6 +1,7 @@
 """Route Chunk Manager (Component F12)."""
 
 import logging
+from abc import ABC, abstractmethod
 from typing import Dict, List, Optional
 import uuid
 
@@ -11,22 +12,28 @@ from gps_denied.schemas.metric import Sim3Transform
 logger = logging.getLogger(__name__)
 
 
-class IRouteChunkManager:
+class IRouteChunkManager(ABC):
+    @abstractmethod
     def create_new_chunk(self, flight_id: str, start_frame_id: int) -> ChunkHandle:
         pass
     
+    @abstractmethod
     def get_active_chunk(self, flight_id: str) -> Optional[ChunkHandle]:
         pass
     
+    @abstractmethod
     def get_all_chunks(self, flight_id: str) -> List[ChunkHandle]:
         pass
     
+    @abstractmethod
     def add_frame_to_chunk(self, flight_id: str, frame_id: int) -> bool:
         pass
     
+    @abstractmethod
     def update_chunk_status(self, flight_id: str, chunk_id: str, status: ChunkStatus) -> bool:
         pass
 
+    @abstractmethod
     def merge_chunks(self, flight_id: str, new_chunk_id: str, main_chunk_id: str, transform: Sim3Transform) -> bool:
         pass