chore: updater autobuild (#5295)

* chore(updater): configure autobuild channel and refresh suffixes

* feat(updater): add channel-aware updater and UI integration

* feat(updater): support channel-specific updater command

* feat(updater): enable downgrade-aware updates for autobuild channel

* fix(updater): tighten prerelease downgrade gating and forward target

* style: prettier

.github/workflows/autobuild.yml

@@ -493,6 +493,43 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+  publish-updater-manifests:
+    name: Publish Updater Manifests
+    runs-on: ubuntu-latest
+    needs:
+      [
+        update_tag,
+        autobuild-x86-windows-macos-linux,
+        autobuild-arm-linux,
+        autobuild-x86-arm-windows_webview2,
+      ]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+
+      - name: Install pnpm
+        uses: pnpm/action-setup@v4
+        with:
+          run_install: false
+
+      - name: Install dependencies
+        run: pnpm i
+
+      - name: Publish updater manifests
+        run: pnpm updater
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Publish WebView2 updater manifests
+        run: pnpm updater-fixed-webview2
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
   notify-telegram:
     name: Notify Telegram
     runs-on: ubuntu-latest
@@ -502,6 +539,7 @@ jobs:
         autobuild-x86-windows-macos-linux,
         autobuild-arm-linux,
         autobuild-x86-arm-windows_webview2,
+        publish-updater-manifests,
       ]
     steps:
       - name: Checkout repository