fix(ci): fix PowerShell parse error in Add Rust to PATH step

Em dash in Write-Error string broke PowerShell string termination.
Also try C:\Users\%USERNAME%\.cargo\bin as fallback since act may
override USERPROFILE to a temp directory.

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

.gitea/workflows/release.yml

@@ -66,12 +66,21 @@ jobs:
       - name: Add Rust to PATH
         shell: powershell
         run: |
-          $cargoDir = "$env:USERPROFILE\.cargo\bin"
-          if (Test-Path $cargoDir) {
-            Add-Content -Path $env:GITHUB_PATH -Value $cargoDir
-            Write-Host "Added $cargoDir to GITHUB_PATH"
-          } else {
-            Write-Error "Rust not found at $cargoDir — install rustup on this runner first"
+          $candidates = @(
+            "$env:USERPROFILE\.cargo\bin",
+            "C:\Users\$env:USERNAME\.cargo\bin"
+          )
+          $added = $false
+          foreach ($dir in $candidates) {
+            if (Test-Path "$dir\cargo.exe") {
+              Add-Content -Path $env:GITHUB_PATH -Value $dir
+              Write-Host "Added $dir to GITHUB_PATH"
+              $added = $true
+              break
+            }
+          }
+          if (-not $added) {
+            Write-Error "cargo.exe not found - install rustup on this runner"
             exit 1
           }