feat: 通知发送层切换到群机器人 webhook, 排版精简

- wecom.py 重写: HTTP POST webhook(替代 aibot WebSocket 按需连接), 接口 send_markdown/send_text 不变, Secret Block wecom-webhook 存 URL
- webhook markdown 支持标题/引用/font 三色, 报告改为 '## 标题 + 单行结论 + 引用详情' 紧凑排版, 结论行用 info/warning 色
- alert_failure 改标题式排版; device_check 结论用 font 色, 去掉负载行
- 移除 wecom-aibot-sdk 依赖与 wecom_capture_chatid.py(镜像下次构建生效, 无需立即重建)

uv.lock

@@ -745,7 +745,6 @@ dependencies = [
     { name = "psutil" },
     { name = "psycopg2-binary" },
     { name = "pydantic" },
-    { name = "wecom-aibot-sdk" },
 ]
 
 [package.metadata]
@@ -757,7 +756,6 @@ requires-dist = [
     { name = "psutil", specifier = ">=7.2.2" },
     { name = "psycopg2-binary" },
     { name = "pydantic", specifier = ">=2.0" },
-    { name = "wecom-aibot-sdk", specifier = ">=1.0.8" },
 ]
 
 [[package]]
@@ -2241,20 +2239,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/be/4d/2d0d67834092e354d2b0498f014a41249a89556bc406cf86f3e1557bb463/websockets-16.1.1-py3-none-any.whl", hash = "sha256:6abbd3e82c731c8e531714466acd5d87b5e88ac3243465337ba71d68e23ae7e3", size = 173814, upload-time = "2026-07-17T22:51:04.184Z" },
 ]
 
-[[package]]
-name = "wecom-aibot-sdk"
-version = "1.0.8"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "cryptography" },
-    { name = "httpx" },
-    { name = "websockets" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/45/72/e14f62362ecee2bae1fb13e7f48e000a39514c883f2b49568294624e0241/wecom_aibot_sdk-1.0.8.tar.gz", hash = "sha256:dd8ac2917e0b23a190a718b2c13f717acd242af487e2bf98a5ca40a117c133e6", size = 64863, upload-time = "2026-06-02T09:43:50.569Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/a8/82/8e342b64b29c52d9e92fa6f3596d53df5d2dd3dab871493ce0f871b01914/wecom_aibot_sdk-1.0.8-py3-none-any.whl", hash = "sha256:9577742c1b9d76232ece675342871e26c3f5a9d9617c7f860f951e2c6265c184", size = 28069, upload-time = "2026-06-02T09:43:49.316Z" },
-]
-
 [[package]]
 name = "whenever"
 version = "0.10.3"