v20260411

Windows release for April 11, 2026.

What changed:

• GUI colors now adapt cleanly to both light and dark system themes.
• Starting the service manually without WeChat running now shows a direct reminder instead of only exiting with code 1.
• Autostart continues to wait for WeChat before launching the service.

Validation:

• python -m unittest discover -s tests
• powershell -ExecutionPolicy Bypass -File scripts\make_release.ps1

Full Changelog: v20260407.1...v20260411