Allow testers to attach evidence files to a single test case within a
specific test run, proving the test was actually executed. Attachments
are scoped to the RunCase (per-execution), not the shared case definition.
Backend:
- runCaseAttachments join table + model (CASCADE on runCase/attachment)
- POST/GET /runcaseattachments routes (reuse /attachments download+delete)
Frontend:
- new "Test record" tab in the run case detail pane with drag-and-drop
upload, scoped to reporters; i18n for all 6 locales
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
