feat: add i18n, platform channels page, and WeChat QR login

- Add vue-i18n with auto-detect browser language and manual toggle (EN/中文)
- Move platform channels to separate page with credential management
- Support Telegram, Discord, Slack, WhatsApp, Matrix, Feishu, Weixin, WeCom
- Add WeChat QR code login (opens in browser, polls status, auto-saves)
- Write platform credentials to ~/.hermes/.env matching hermes gateway setup
- Auto restart gateway after platform config changes
- Add settings store with per-section save for all config categories
- Persist session group collapse state across navigation
- Fix pre-existing TypeScript build errors

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "hermes-web-ui",
-  "version": "0.1.6",
+  "version": "0.1.7",
   "description": "Hermes Agent Web UI - Chat and Job Management Dashboard",
   "repository": {
     "type": "git",
@@ -28,16 +28,20 @@
     "@koa/cors": "^5.0.0",
     "@koa/router": "^13.1.0",
     "highlight.js": "^11.11.1",
+    "js-yaml": "^4.1.1",
     "koa": "^2.15.3",
     "koa-send": "^5.0.1",
     "koa-static": "^5.0.0",
     "markdown-it": "^14.1.1",
     "naive-ui": "^2.44.1",
     "pinia": "^3.0.4",
+    "qrcode": "^1.5.4",
     "vue": "^3.5.32",
+    "vue-i18n": "^11.3.2",
     "vue-router": "^4.6.4"
   },
   "devDependencies": {
+    "@types/js-yaml": "^4.0.9",
     "@types/koa": "^2.15.0",
     "@types/koa__cors": "^5.0.0",
     "@types/koa__router": "^12.0.4",
@@ -45,6 +49,7 @@
     "@types/koa-static": "^4.0.4",
     "@types/markdown-it": "^14.1.2",
     "@types/node": "^24.12.2",
+    "@types/qrcode": "^1.5.6",
     "@vitejs/plugin-vue": "^6.0.5",
     "@vue/tsconfig": "^0.9.1",
     "concurrently": "^9.2.1",