Hotfix F — Run final Metadata browser regression QA

[maruson08]

Run real Chrome QA for Orientation=6, JPEG/PNG/WebP and PDF Metadata flows, toolbar/summary/details, save/cancel/fail paths, themes, representative locales, narrow layouts, keyboard operation, and network invariants.

[maruson08]

Chrome QA was attempted twice but blocked before connection by the documented local kernel-assets path error. The result is recorded as BLOCKED/NOT RUN in the merged v2 QA evidence; release status remains READY EXCEPT MANUAL QA.