[AhmedCodeGuy]

Summary

Ticket: QF-6042

Follow-up to #31. Production counterpart: #30.

This PR replaces the previously supplied 1366×768 Open Graph exports with the corrected 1200×630 files.

• replaces all 13 localized defaults, using SW.png rather than the stale SW-1.png
• replaces the 8 study-mode, 3 page-specific, and 3 established brand-default assets
• updates SHA-256 and dimension regression coverage for all 27 mapped replacements

Validation

• npx playwright test tests/qdc-branding.spec.ts — 5 passed
• npm run build — passed
• runtime audit of all 27 mapped URLs — HTTP 200, image/png, exact source-byte match
• tests/og-images.spec.ts functional coverage — 221 passed; 26 visual-only checks lack macOS snapshot baselines in the repository
• git diff --check — passed

Scope note

The supplied QAI, QAS, QDO, QFD, QL, and QS exports are not included because they do not replace an existing mapped public asset; their intended filenames/URLs still need confirmation.