feat(ops): 添加生产监控告警基线

- 新增 Prometheus/Grafana/Loki/Promtail 监控 profile\n- 覆盖 DB、磁盘、慢 API、慢 Prisma、任务失败和小宝摘要 stale 告警\n- 补充 postgres-exporter 自定义查询、Dashboard、部署文档和校验\n\nCo-Authored-By: GPT-5 Codex <codex@openai.com>

deploy/monitoring/prometheus/prometheus.yml

@@ -0,0 +1,45 @@
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+rule_files:
+  - /etc/prometheus/alert-rules.yml
+
+scrape_configs:
+  - job_name: prometheus
+    static_configs:
+      - targets: ['prometheus:9090']
+
+  - job_name: postgres-exporter
+    static_configs:
+      - targets: ['postgres-exporter:9187']
+
+  - job_name: node-exporter
+    static_configs:
+      - targets: ['node-exporter:9100']
+
+  - job_name: cadvisor
+    static_configs:
+      - targets: ['cadvisor:8080']
+
+  - job_name: promtail
+    static_configs:
+      - targets: ['promtail:9080']
+
+  - job_name: blackbox-http
+    metrics_path: /probe
+    params:
+      module: [http_2xx]
+    static_configs:
+      - targets:
+          - http://nginx/api/v1/health/version
+          - http://nginx/api/v1/config/ai
+          - http://nginx/api/v1/v2.2/requirements?productId=__smoke__&limit=1
+    relabel_configs:
+      - source_labels: [__address__]
+        target_label: __param_target
+      - source_labels: [__param_target]
+        target_label: instance
+      - target_label: __address__
+        replacement: blackbox-exporter:9115
+