feat/match_collector: batch match import

dev/docker-compose.yml

@@ -1,21 +1,25 @@
 services:
-  # Development MongoDB with performance optimizations
+  # Development MongoDB with memory optimizations
   mongodb:
-    image: mongo:latest
+    image: mongo:8.3.4
     container_name: buildpath-mongodb
     ports:
       - "27017:27017"
     environment:
       MONGO_INITDB_ROOT_USERNAME: ${MONGO_USER:-root}
       MONGO_INITDB_ROOT_PASSWORD: ${MONGO_PASS:-password}
+      GLIBC_TUNABLES: glibc.pthread.rseq=1
     volumes:
       - ./data/db:/data/db
-    command: mongod --wiredTigerCacheSizeGB 4 --quiet
-    healthcheck:
-      test: echo 'db.runCommand("ping").ok' | mongosh localhost:27017/test --quiet
-      interval: 5s
-      timeout: 2s
-      retries: 30
+    # Reduced cache size to leave more RAM for the import script
+    # WiredTiger cache is now 2GB (was 4GB) to prevent OOM during large imports
+    command: mongod --wiredTigerCacheSizeGB 2 --quiet
+    deploy:
+      resources:
+        limits:
+          memory: 4G
+        reservations:
+          memory: 2G
 
   mongo-express:
     image: mongo-express