chore(compose): move agent_files to docker vol

docker/docker-compose.dev.yml

@@ -7,7 +7,7 @@ services:
       POSTGRES_USER: patchmon_user
       POSTGRES_PASSWORD: INSECURE_REPLACE_ME_PLEASE_INSECURE
     volumes:
-      - postgres_data:/var/lib/postgresql/data
+      - ./compose_dev_data/db:/var/lib/postgresql/data
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U patchmon_user -d patchmon_db"]
       interval: 10s
@@ -31,7 +31,7 @@ services:
       RATE_LIMIT_WINDOW_MS: 900000
       RATE_LIMIT_MAX: 100
     volumes:
-      - ./agents:/app/agents
+      - ./compose_dev_data/agents:/app/agents
     depends_on:
       database:
         condition: service_healthy
@@ -49,6 +49,3 @@ services:
     depends_on:
       backend:
         condition: service_healthy
-
-volumes:
-  postgres_data: