[ashh-droid]

Final submission showcase

• Verified the user's complete Kannada Varthe saved report: 0 errors, 73 warnings (72 lang=en inherited from the HTML ancestor, one suspected mobile overflow), 13 informational font notes, both Chromium pages present. No invented AI claims.
• Add a one-command local publisher (scripts/finalize_submission_showcase.py) to validate the exact saved report, copy all real evidence to GitHub Pages samples, then switch the homepage catalog from Hindi Wikipedia to Kannada while keeping Wikipedia's archive files. README updates alongside it.
• Report cards now support an accurate human-reviewed review_note; cards keep equal widths in a single row at desktop widths and stack on smaller screens.
• Browser QA asserts three cards, proper alignment, no sideways scrolling, working report URLs, accessible controls at all nine widths.
• Regression tests ensure only the exact final Kannada scan is published and the README/gallery are consistent.

No BharatCode API calls or new scans, no changes to saved 9/9 AI report. This PR intentionally does NOT fabricate/add binary report screenshots from a local user archive. User runs the publisher locally after the PR merges; the real image assets are then committed for deployment.