[QF-6042] Update approved Open Graph previews for production

[AhmedCodeGuy]

Summary

Ticket: QF-6042

Production counterpart to testing follow-up #32. Earlier implementation history: #29 and #31.

This PR publishes the approved replacement Open Graph artwork across localized defaults, study mode, page-specific previews, and the Quran.com, Quran Foundation, and Quran Reflect brand defaults.

• updates all 13 localized default assets already served by /api/og?lang=..., using SW.png rather than the stale SW-1.png
• replaces the 8 study-mode and 3 page-specific assets
• replaces the 3 established brand defaults
• locks the corrected 1200×630 dimensions and SHA-256 values for all 27 mapped assets

Validation

• npx playwright test tests/approved-og-assets.spec.ts — 1 passed
• npm run build — passed
• runtime audit of all 27 mapped URLs — HTTP 200, image/png, exact source-byte match
• 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.

Release note

Do not merge until the coordinated production release is approved.

Prelive preparation — 4 October 2026

Combined release candidate: #33 integrates these approved QDC/QF/QR images with #25, resolves the conflicting asset assertions, and preserves current main delivery/edge/server protections. Keep all candidates unmerged until prelive acceptance; main deploys live production.

[AhmedCodeGuy]

Superseded by combined candidate #33. All 27 public artwork entries from this inspected head match #33 byte-for-byte; the comparison and coordinated release hold are recorded on #33. Closing this overlapping source without merging; no production deployment is performed by this closure.