fix: Windows build — use cmd shell to avoid PowerShell execution policy

.github/workflows/release.yml

@@ -37,18 +37,18 @@ jobs:
         with: { node-version: 20 }
       - name: Install Rust
         run: |
-          if (-not (Get-Command rustc -ErrorAction SilentlyContinue)) {
+          where rustc 2>nul || (
-            Invoke-WebRequest -Uri https://win.rustup.rs/x86_64 -OutFile rustup-init.exe
+            curl -L -o rustup-init.exe https://win.rustup.rs/x86_64 && rustup-init.exe -y --default-toolchain stable
-            .\rustup-init.exe -y --default-toolchain stable
+          )
-            $env:Path += ";$env:USERPROFILE\.cargo\bin"
+          set PATH=%USERPROFILE%\.cargo\bin;%PATH%
-          }
           rustc --version
-        shell: powershell
+        shell: cmd
       - name: Build frontend
-        run: cd web; npm ci; npm run build
+        run: cd web && npm ci && npm run build
+        shell: cmd
       - name: Build Tauri bundles
-        run: cd web; $env:Path += ";$env:USERPROFILE\.cargo\bin"; npx tauri build
+        run: cd web && set PATH=%USERPROFILE%\.cargo\bin;%PATH% && npx tauri build
-        shell: powershell
+        shell: cmd
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with: