* feat(app): modernize compact headers and sidebar affordances
Use a shared island header with quick tab creation and keep sheet footers inside their visible layout. Opt sidebar rows into touch sizing without changing global appearance settings.
* test(app): match darker light-theme workspace selection
* test(app): align plugin journeys with compact header
* feat(plugins): support modal body layout, scrolling and clipboard actions
* fix(app): keep native scroll dependencies out of web imports
* fix(nix): sync dependency hash for plugin native types
* test(plugins): express modal QA as user journeys