feat: improve adaptive theme detection, add seconds-level TimePicker and main-window occlusion auto-hide#56

Programmer-MrWang merged 7 commits intomainProgrammer-MrWang/SystemTools:mainfrom

codex/refactor-timepicker-to-use-axaml-componentProgrammer-MrWang/SystemTools:codex/refactor-timepicker-to-use-axaml-componentCopy head branch name to clipboard