[deploy] PyMySQL 替换 + Tailscale 组网 + config.yaml + 路径修复

- db_layer.py: mysql-connector-python(19MB) → PyMySQL(45KB), 去掉连接池
- config_loader.py: 修复路径解析 (2级→3级 dirname), FAM-Core + FAM-Edge 均修复
- Tailscale 组网完成: Oracle=100.74.137.126, NAS=100.70.234.39, 互通验证通过
- NAS Python 依赖: flask/gunicorn/pymysql/PyYAML 全部安装成功
- NAS 代码部署: /volume1/web/sentinel-home-ai/, FAM-Core 7 模块导入 PASS
- NAS DB 连接验证: PyMySQL → MariaDB 10.11.11, 6 张表可见, PASS
- config.yaml 创建: FAM-Core + FAM-Edge + FAM-UI (Tailscale IP + 密码)
- requirements.txt: mysql-connector-python → PyMySQL

fam-core/config/config.yaml

@@ -0,0 +1,37 @@
+# FAM-Core 配置文件 (NAS 端) - 实际部署配置
+# Tailscale: NAS=100.70.234.39, Oracle=100.74.137.126
+
+server:
+  host: "0.0.0.0"
+  port: 8000
+
+database:
+  host: "127.0.0.1"
+  port: 3306
+  user: "root"
+  password: "iLoveJava5!"
+  database: "sentinel_home_ai"
+  unix_socket: "/run/mysqld/mysqld10.sock"
+
+scheduler:
+  scan_interval: 60
+  video_dir: "/volume1/surveillance"
+  video_extensions: [".mp4", ".mkv", ".avi"]
+  file_stable_seconds: 60
+  camera_name: "客厅"
+
+dispatcher:
+  poll_interval: 30
+  edge_url: "http://100.74.137.126:5000/api/edge/video/analyze"
+  webhook_url: "http://100.70.234.39:8000/api/core/callback/event"
+  max_retries: 3
+
+video_server:
+  base_url: "http://100.70.234.39:8000/media"
+  token: "sentinel-media-2026"
+  video_dir: "/volume1/surveillance"
+
+chat_handler:
+  ollama_url: "http://100.74.137.126:11434/api/generate"
+  model_name: "llava-phi3"
+  timeout: 120