feat: Add GitHub Actions workflow to automatically build a Windows executable.

.github/workflows/build-exe.yml

@@ -17,26 +17,50 @@ jobs:
           Write-Host "Workspace: $pwd"
           Get-ChildItem
 
-      - name: Check Python
+      - name: Locate project files
         shell: powershell
         run: |
+          $mainFile = Get-ChildItem -Path $pwd -Recurse -Filter main.py -File | Select-Object -First 1
+          if (-not $mainFile) {
+            Write-Error "Could not find main.py in workspace."
+          }
+
+          $projectDir = $mainFile.Directory.FullName
+          "PROJECT_DIR=$projectDir" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+          Write-Host "Project directory: $projectDir"
+          Get-ChildItem $projectDir
+
+      - name: Detect Python
+        shell: powershell
+        run: |
+          if (Get-Command py -ErrorAction SilentlyContinue) {
+            "PY_CMD=py" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
+            py --version
+          }
+          elseif (Get-Command python -ErrorAction SilentlyContinue) {
+            "PY_CMD=python" | Out-File -FilePath $env:GITHUB_ENV -Encoding utf8 -Append
             python --version
-          pip --version
+          }
+          else {
+            Write-Error "Python is not installed or not available in PATH. Install Python on the runner, or add py/python to PATH."
+          }
 
       - name: Install dependencies
         shell: powershell
         run: |
-          python -m pip install --upgrade pip
-          pip install pyinstaller keyboard pywin32
+          & $env:PY_CMD -m pip --version
+          & $env:PY_CMD -m pip install --upgrade pip
+          & $env:PY_CMD -m pip install pyinstaller keyboard pywin32
 
       - name: Build executable
         shell: powershell
+        working-directory: ${{ env.PROJECT_DIR }}
         run: |
-          pyinstaller --noconfirm --onefile --windowed --name Shortcut_Sync_PotPlayer main.py
+          & $env:PY_CMD -m PyInstaller --noconfirm --onefile --windowed --name Shortcut_Sync_PotPlayer main.py
 
       - name: Collect build output
         shell: powershell
         run: |
           New-Item -ItemType Directory -Force output | Out-Null
-          Copy-Item dist/Shortcut_Sync_PotPlayer.exe output/Shortcut_Sync_PotPlayer.exe -Force
+          Copy-Item "$env:PROJECT_DIR\\dist\\Shortcut_Sync_PotPlayer.exe" output/Shortcut_Sync_PotPlayer.exe -Force
           Get-ChildItem output