Call bread_theme::gtk::apply_shared() before breadbar's own rules so fonts,
palette, and generic widgets come from the one ecosystem stylesheet (and
recolour live). Keep only breadbar-specific CSS (bar window, workspace
buttons, stats, notifications, OSD). Bump bread-theme dep to v0.2.6.
- Cargo.toml: depend on bread-theme (path dep for local dev, git dep for
production) with gtk feature; remove local theme dependencies
- src/theme.rs: replace local pywal/Catppuccin impl with bread_theme::gtk
helpers; local bar-specific CSS is preserved
- bakery.toml: describes breadbar for bakery install
- release.yml: builds on hestia self-hosted runner, publishes binary to
dl.breadway.dev and GitHub Releases on v* tags
