fix(feishu): pass proxy agent to WSClient for proxy environments (#26397)

* fix(feishu): pass proxy agent to WSClient for environments behind HTTPS proxy

The Lark SDK WSClient uses the `ws` library which does not automatically
respect https_proxy/HTTP_PROXY environment variables. This causes WebSocket
connection failures in proxy environments (e.g. WSL2 with a local proxy).

Detect proxy env vars and pass an HttpsProxyAgent to WSClient via the
existing `agent` constructor option.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(feishu): add generic type parameter to HttpsProxyAgent return type

Fix TS2314: `HttpsProxyAgent<Uri>` requires a type argument.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix(feishu): wire ws proxy dependency and coverage

* chore(lockfile): resolve axios peer lock entry after rebase

---------

Co-authored-by: lirui <lirui@fxiaoke.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

extensions/feishu/package.json

@@ -6,6 +6,7 @@
   "dependencies": {
     "@larksuiteoapi/node-sdk": "^1.59.0",
     "@sinclair/typebox": "0.34.48",
+    "https-proxy-agent": "^7.0.6",
     "zod": "^4.3.6"
   },
   "openclaw": {