Third Phase 5 split. The desktop action buttons — transcribe,
transcribe-stop, edit link, download link — become their own component
with a focused props interface (documentId, canWrite, isPdf,
transcribeMode bindable, filePath, originalFilename, fileUrl).
TDD: 8 tests covering empty render, transcribe button gating
(canWrite × isPdf × transcribeMode), stop-transcribe rendering, edit
link with documentId href, download link with filePath gating, all
hidden when in transcribe mode. After the test was red the component
was created.
DocumentTopBar dropped from 303 lines to 166. The orchestrator now
just composes BackButton, DocumentTopBarTitle, PersonChipRow,
OverflowPillButton, the details toggle, DocumentTopBarActions,
DocumentMobileMenu, and DocumentMetadataDrawer — each visual region
named in one or two words.
Refs #496.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
