Refactor assessment module and update dependencies; remove unused extractor and graph loader files

docker-compose.yml

@@ -1,27 +1,23 @@
 services:
-  neo4j:
-    image: neo4j:5
-    container_name: helia-neo4j
+  mongo:
+    image: mongo:latest
+    container_name: helia-mongo
     ports:
-      - "7474:7474" # Neo4j Browser / HTTP
-      - "7687:7687" # Bolt
+      - "27017:27017"
     environment:
-      # Matches defaults in `src/helia/graph/loader.py`
-      - NEO4J_AUTH=neo4j/password
+      MONGO_INITDB_ROOT_USERNAME: root
+      MONGO_INITDB_ROOT_PASSWORD: password
     volumes:
-      - neo4j_data:/data
-      - neo4j_logs:/logs
+      - mongo_data:/data/db
 
   qdrant:
     image: qdrant/qdrant:latest
     container_name: helia-qdrant
     ports:
-      - "6333:6333" # HTTP
-      - "6334:6334" # gRPC
+      - "6333:6333"
+      - "6334:6334"
     volumes:
       - qdrant_storage:/qdrant/storage
 
 volumes:
-  neo4j_data:
-  neo4j_logs:
   qdrant_storage: