fix(core): Resolve persistence, indexing schema, and RAG collection bugs

- compose: Add persistent logs verification volume
- setup: Add DOCS_PATH configuration
- indexer: Fix missing 'metadata' column schema error during update
- rag: Fix collection name mismatch (trailing underscore)

compose/docker-compose.yml

@@ -17,7 +17,8 @@ services:
       - qdrant
     volumes:
       - ../app:/app
-      - ../docs:/app/docs
+      - ${DOCS_PATH}:/app/docs
+      - ../logs:/app/logs
       - ../crumbforest_config.json:/app/crumbforest_config.json
 
   db: