fix: Windows installer issues - Python detection and scheduled task

- findPython3: skip Windows Store stub (WindowsApps), search common
  install locations (LocalAppData/Programs/Python/PythonXXX)
- installAutoRestart: use schtasks instead of PowerShell
  Register-ScheduledTask to avoid XML parsing errors on non-English
  (Chinese) Windows

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

edge-ai-platform/installer/app.go

@@ -753,15 +753,46 @@ func (inst *Installer) runUninstall() {
 
 // findPython3 locates a Python 3 interpreter.
 func findPython3() (string, error) {
-	if p, err := exec.LookPath("python3"); err == nil {
-		return p, nil
-	}
-	if p, err := exec.LookPath("python"); err == nil {
-		out, _ := exec.Command(p, "--version").Output()
+	// Try python3 first, then python
+	for _, name := range []string{"python3", "python"} {
+		p, err := exec.LookPath(name)
+		if err != nil {
+			continue
+		}
+		// Skip Windows Store stub (WindowsApps) — it opens the Store instead of running Python
+		if runtime.GOOS == "windows" && strings.Contains(strings.ToLower(p), "windowsapps") {
+			continue
+		}
+		out, err := exec.Command(p, "--version").Output()
+		if err != nil {
+			continue // command exists but can't run (stub or broken)
+		}
 		if strings.Contains(string(out), "Python 3") {
 			return p, nil
 		}
 	}
+
+	// On Windows, check common install locations
+	if runtime.GOOS == "windows" {
+		localAppData := os.Getenv("LOCALAPPDATA")
+		programFiles := os.Getenv("ProgramFiles")
+		for _, ver := range []string{"Python312", "Python313", "Python311", "Python310"} {
+			for _, base := range []string{
+				filepath.Join(localAppData, "Programs", "Python", ver),
+				filepath.Join(programFiles, "Python"+ver[6:]), // e.g. ProgramFiles\Python312 -> Python12... skip
+				filepath.Join(programFiles, ver),
+			} {
+				p := filepath.Join(base, "python.exe")
+				if _, err := os.Stat(p); err == nil {
+					out, err := exec.Command(p, "--version").Output()
+					if err == nil && strings.Contains(string(out), "Python 3") {
+						return p, nil
+					}
+				}
+			}
+		}
+	}
+
 	return "", fmt.Errorf("python3 not found")
 }
 

edge-ai-platform/installer/platform_windows.go

@@ -109,21 +109,22 @@ func installAutoRestart(installDir string) error {
 	// Remove existing task if present
 	exec.Command("schtasks", "/Delete", "/TN", taskName, "/F").Run()
 
-	// Create scheduled task that runs at logon and restarts on failure
-	// Using PowerShell for more control over restart settings
-	psScript := fmt.Sprintf(`
-$Action = New-ScheduledTaskAction -Execute '%s' -Argument '--tray' -WorkingDirectory '%s'
-$Trigger = New-ScheduledTaskTrigger -AtLogOn
-$Settings = New-ScheduledTaskSettingsSet -RestartCount 3 -RestartInterval (New-TimeSpan -Seconds 5) -AllowStartIfOnBatteries -DontStopIfGoingOnBatteries -StartWhenAvailable -ExecutionTimeLimit (New-TimeSpan -Days 0)
-Register-ScheduledTask -TaskName '%s' -Action $Action -Trigger $Trigger -Settings $Settings -Description 'Edge AI Platform Server' -Force
-Start-ScheduledTask -TaskName '%s'
-`, binPath, installDir, taskName, taskName)
-
-	cmd := exec.Command("powershell", "-NoProfile", "-Command", psScript)
+	// Use schtasks instead of PowerShell Register-ScheduledTask
+	// to avoid XML parsing issues on non-English Windows
+	cmd := exec.Command("schtasks", "/Create",
+		"/TN", taskName,
+		"/TR", fmt.Sprintf(`"%s" --tray`, binPath),
+		"/SC", "ONLOGON",
+		"/RL", "HIGHEST",
+		"/F",
+	)
 	if out, err := cmd.CombinedOutput(); err != nil {
 		return fmt.Errorf("scheduled task creation failed: %s — %w", string(out), err)
 	}
 
+	// Start the task immediately
+	exec.Command("schtasks", "/Run", "/TN", taskName).Run()
+
 	return nil
 }