chore: enhance docker-compose configuration for improved service management

- Added restart policies for PostgreSQL, Redis, Qdrant, server, and server-full services to ensure better resilience.
- Updated environment variable handling for PostgreSQL credentials to support default values.
- Adjusted healthcheck commands for PostgreSQL and Qdrant services for improved reliability.
- Introduced a new network 'noteflow-net' to facilitate service communication within the Docker environment.

All quality checks pass.

compose.yaml

@@ -5,19 +5,22 @@ services:
   postgres:
     container_name: noteflow-postgres
     image: pgvector/pgvector:pg15
+    restart: unless-stopped
     environment:
-      POSTGRES_DB: noteflow
-      POSTGRES_USER: noteflow
-      POSTGRES_PASSWORD: noteflow
+      POSTGRES_DB: ${POSTGRES_DB:-noteflow}
+      POSTGRES_USER: ${POSTGRES_USER:-noteflow}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-noteflow}
     volumes:
       - noteflow_pg_data:/var/lib/postgresql/data
     ports:
       - "5432:5432"
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U noteflow -d noteflow"]
+      test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-noteflow} -d ${POSTGRES_DB:-noteflow}"]
       interval: 5s
       timeout: 5s
       retries: 10
+    networks:
+      - noteflow-net
     profiles:
       - infra
       - server
@@ -25,8 +28,9 @@ services:
       - server-full
 
   redis:
-    image: redis:7-alpine
     container_name: noteflow-redis
+    image: redis:7-alpine
+    restart: unless-stopped
     ports:
       - "6379:6379"
     volumes:
@@ -37,6 +41,8 @@ services:
       interval: 5s
       timeout: 5s
       retries: 10
+    networks:
+      - noteflow-net
     profiles:
       - infra
       - server
@@ -44,8 +50,9 @@ services:
       - server-full
 
   qdrant:
-    image: qdrant/qdrant:latest
     container_name: noteflow-qdrant
+    image: qdrant/qdrant:v1.12.1
+    restart: unless-stopped
     ports:
       - "6333:6333"
       - "6334:6334"
@@ -54,11 +61,13 @@ services:
     environment:
       QDRANT__SERVICE__GRPC_PORT: 6334
     healthcheck:
-      test: ["CMD-SHELL", "timeout 1 bash -c '</dev/tcp/localhost/6333' || exit 1"]
+      test: ["CMD-SHELL", "bash -c '</dev/tcp/localhost/6333'"]
       interval: 5s
       timeout: 3s
       retries: 10
       start_period: 10s
+    networks:
+      - noteflow-net
     profiles:
       - infra
       - server
@@ -68,18 +77,21 @@ services:
   # =============================================================================
   # Application Services
   # =============================================================================
+  # Note: 'server' and 'server-full' are mutually exclusive (same port 50051).
+  # Use profile 'server' OR 'server-full', not both.
   server:
     container_name: noteflow-server
     build:
       context: .
       dockerfile: docker/server.Dockerfile
       target: server
+    restart: unless-stopped
     ports:
       - "50051:50051"
     env_file:
       - .env
     environment:
-      NOTEFLOW_DATABASE_URL: postgresql+asyncpg://noteflow:noteflow@postgres:5432/noteflow
+      NOTEFLOW_DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER:-noteflow}:${POSTGRES_PASSWORD:-noteflow}@postgres:5432/${POSTGRES_DB:-noteflow}
       NOTEFLOW_REDIS_URL: redis://redis:6379/0
       NOTEFLOW_QDRANT_URL: http://qdrant:6333
     volumes:
@@ -91,6 +103,8 @@ services:
         condition: service_healthy
       qdrant:
         condition: service_healthy
+    networks:
+      - noteflow-net
     profiles:
       - server
       - full
@@ -101,12 +115,13 @@ services:
       context: .
       dockerfile: docker/server.Dockerfile
       target: server-full
+    restart: unless-stopped
     ports:
       - "50051:50051"
     env_file:
       - .env
     environment:
-      NOTEFLOW_DATABASE_URL: postgresql+asyncpg://noteflow:noteflow@postgres:5432/noteflow
+      NOTEFLOW_DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER:-noteflow}:${POSTGRES_PASSWORD:-noteflow}@postgres:5432/${POSTGRES_DB:-noteflow}
       NOTEFLOW_REDIS_URL: redis://redis:6379/0
       NOTEFLOW_QDRANT_URL: http://qdrant:6333
     volumes:
@@ -118,6 +133,8 @@ services:
         condition: service_healthy
       qdrant:
         condition: service_healthy
+    networks:
+      - noteflow-net
     profiles:
       - server-full
 
@@ -140,6 +157,8 @@ services:
       - client_npm_cache:/root/.npm
     depends_on:
       - server
+    networks:
+      - noteflow-net
     profiles:
       - client
 
@@ -149,3 +168,7 @@ volumes:
   noteflow_qdrant_data:
   client_cargo_cache:
   client_npm_cache:
+
+networks:
+  noteflow-net:
+    driver: bridge