The detail screen's overflow "Report" item was a dead stub that showed a "Report feature coming soon!" snackbar, even though ReportDialog has long been implemented and wired into the feed card menu. Reporting from a post's detail view now opens the same dialog (with the same sign-in guard and success snackbar), and the item is hidden on the viewer's own posts for parity with the feed card. Verified end-to-end on the emulator against the local stack (g3_report_dialog Maestro flow; server receipt in admin_reports). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>