Fix missing artwork images, add open-access sources & an About page

[pedrobritx]

Why

Some cards showed only a title and a blank image. Investigating: every blank card was an Art Institute of Chicago (AIC) work. AIC's IIIF image host (www.artic.edu/iiif/2) now sits behind Cloudflare bot protection and answers hotlinked <img> requests with an HTTP 403 "Just a moment…" challenge instead of the picture. Public image proxies (weserv, corsproxy, allorigins) are blocked too. The Met and Cleveland image hosts return 200 fine — so only Chicago broke.

What changed

1. Ensure art always shows

• Image-proxy hook — new optional NEXT_PUBLIC_IMAGE_PROXY. AIC image URLs route through it when set; ArtImage prefers it in its fallback chain. Point it at a proxy you control (e.g. a free Cloudflare Worker) to bring AIC images back everywhere.
• Reliability-aware default grid — each source has an imagesReliable flag; the default selection (DEFAULT_SOURCES) is the reliable set, so the wall never fills with title-only blanks. AIC stays a filter toggle and remains the browse-by-colour engine (the only source publishing dominant colour).

2. More open-access museums

• Refactored lib/sources.ts into a pluggable adapter registry (MuseumAdapter: search / getById + imagesReliable / hasColor). Adding a museum is now local.
• Added two keyless, CORS, CC0 sources, verified live:
  • Statens Museum for Kunst (SMK) — api.smk.dk (~39k public-domain works)
  • Wikimedia Commons — broad public-domain backstop (images via Special:FilePath, which clamps width and always resolves)
• Key-gated museums (Rijksmuseum, Harvard, Smithsonian, Europeana) can register behind NEXT_PUBLIC_* keys via the same interface; NGA is CSV opendata (build-time, future).
• Public exports (SOURCES, searchArtworks, getArtwork, SearchCursor, …) are unchanged — new sources light up the museum filter automatically.

3. License, manifesto & links

• New /about page: manifesto ("started wanting art on my TV → an art-museum hub for anyone"), MIT license summary, credits, and links to GitHub / LinkedIn / personal site / Buy me a coffee.
• Root LICENSE (MIT — "use it freely, just keep the credit").
• Quiet About link + social icons in the desktop rail, plus a Settings → About link. New icons.tsx glyphs. README updated.

Verification

• npm run typecheck, npm run lint, npm run build all pass (11 pages exported, incl. /about).
• Replayed the exact adapter URLs: SMK search returns 39,480 works and its transformed thumbnail loads (200 image/jpeg); Wikimedia search + pagination work and Special:FilePath images load (200); confirmed AIC's host returns 403 (hence the proxy hook).
• Verified exported HTML contains the manifesto, license, sources, and all external links.

Notes

• AIC images without a proxy still fall back to the tasteful placeholder (graceful by design). Set NEXT_PUBLIC_IMAGE_PROXY to restore them — see .env.example.

https://claude.ai/code/session_01Ko6vyP8nATEfBDcgCTm1qo

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