refactor: organize desktop vs. mobile into separate folders

.github/workflows/build-windows.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: windows-latest
     defaults:
       run:
-        working-directory: js
+        working-directory: js/desktop
     env:
       APP_ENV: prod
       AZURE_TENANT_ID: ${{ vars.AZURE_TENANT_ID }}
@@ -31,7 +31,7 @@ jobs:
         with:
           node-version: 20
           cache: yarn
-          cache-dependency-path: js/yarn.lock
+          cache-dependency-path: js/desktop/yarn.lock
 
       - name: Install dependencies
         run: yarn install --frozen-lockfile --network-timeout 600000
@@ -51,7 +51,7 @@ jobs:
           $dlib = Join-Path $env:RUNNER_TEMP "trusted-signing\Microsoft.Trusted.Signing.Client\bin\x64\Azure.CodeSigning.Dlib.dll"
           if (-not (Test-Path $dlib)) { throw "Dlib not found at $dlib" }
           "AZURE_DLIB_PATH=$dlib" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
-          "AZURE_METADATA_JSON_PATH=$env:GITHUB_WORKSPACE\js\signing-metadata.json" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
+          "AZURE_METADATA_JSON_PATH=$env:GITHUB_WORKSPACE\js\desktop\signing-metadata.json" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
 
       - name: Locate signtool.exe
         shell: pwsh
@@ -84,7 +84,7 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: flowy-llink-windows-signed
-          path: js/out/make/**/*
+          path: js/desktop/out/make/**/*
           if-no-files-found: warn
 
       # When Squirrel reports a generic "Failed to sign", the real error from
@@ -94,5 +94,5 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: electron-windows-sign-log
-          path: js/node_modules/electron-winstaller/vendor/electron-windows-sign.log
+          path: js/desktop/node_modules/electron-winstaller/vendor/electron-windows-sign.log
           if-no-files-found: ignore