Fix release workflow: clear beforeBuildCommand to avoid path issue

The tauri-action changes cwd to projectPath, making relative paths
in beforeBuildCommand fail. Since the frontend is already built in
a prior step, we clear the command before running tauri build.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mojtabakarimi

.github/workflows/release.yml

@@ -120,6 +120,13 @@ jobs:
           $conf.bundle.windows.nsis.installMode = "currentUser"
           $conf | ConvertTo-Json -Depth 10 | Set-Content src-tauri/tauri.conf.json
 
+      - name: Clear beforeBuildCommand (frontend already built)
+        shell: bash
+        run: |
+          cd src-tauri
+          sed -i 's/"beforeBuildCommand".*/"beforeBuildCommand": "",/' tauri.conf.json
+          sed -i 's/"beforeDevCommand".*/"beforeDevCommand": "",/' tauri.conf.json
+
       - name: Build Tauri app
         if: matrix.target != 'windows-user'
         uses: tauri-apps/tauri-action@action-v0.6.1