* feat: show dynamic build number in status bar (bNNN format)
Replace hardcoded v0.4.2 with a dynamic build number derived from
git rev-list --count HEAD at compile time. The count is embedded via
build.rs and exposed through a get_build_number Tauri command.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* design: add build-number-status-bar wireframes (status bar with dynamic b-number)
* fix: use runtime env var for BUILD_NUMBER (compile-time env! not available in CI)
* style: rustfmt format get_build_number
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Co-authored-by: Test <test@test.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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