main:删除 Grafana 仪表板配置文件

更新内容：
- 移除 `dashboard.json` 文件，清理不再需要的 Grafana 仪表板配置。
- 简化项目目录结构，删除多余的监控配置以优化维护。

deployment/docker-compose.yml

@@ -17,9 +17,16 @@ services:
       - REDIS_DB=0
       # 指标配置文件路径
       - METRICS_CONFIG_PATH=config/metrics.yaml
+      # 日志文件配置
+      - LOG_FILE_ENABLED=false
+      - LOG_FILE_PATH=/var/log/app/app.log
     volumes:
       - ../src:/app/src
       - ../config:/app/config
+      - app_logs:/var/log/app
+    labels:
+      logging: "promtail"
+      logging_jobname: "functional-scaffold-app"
     restart: unless-stopped
     depends_on:
       redis:
@@ -69,12 +76,47 @@ services:
       - GF_SECURITY_ADMIN_PASSWORD=admin
     volumes:
       - grafana_data:/var/lib/grafana
-      - ../monitoring/grafana:/etc/grafana/provisioning
+      - ../monitoring/grafana/datasources:/etc/grafana/provisioning/datasources
+      - ../monitoring/grafana/dashboards:/etc/grafana/provisioning/dashboards
     restart: unless-stopped
     depends_on:
       - prometheus
+      - loki
+
+  loki:
+    image: grafana/loki:2.9.3
+    ports:
+      - "3100:3100"
+    volumes:
+      - ../monitoring/loki.yaml:/etc/loki/local-config.yaml
+      - loki_data:/loki
+    command: -config.file=/etc/loki/local-config.yaml
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3100/ready"]
+      interval: 10s
+      timeout: 3s
+      retries: 3
+
+  promtail:
+    ports:
+      - "9080:9080"
+    image: grafana/promtail:3.0.0
+    volumes:
+      - ../monitoring/promtail.yaml:/etc/promtail/config.yml
+      # Docker stdio 收集
+      - /var/lib/docker/containers:/var/lib/docker/containers:ro
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+      # Log 文件收集（备用）
+      - app_logs:/var/log/app:ro
+    command: -config.file=/etc/promtail/config.yml
+    restart: unless-stopped
+    depends_on:
+      - loki
 
 volumes:
   prometheus_data:
   grafana_data:
   redis_data:
+  loki_data:
+  app_logs: