Add influence rework, image checkup, debug mode, and fetched paintings.

Support artist and movement influence links with web discovery, a developer checkup table with gallery/detail thumbnails, and debug image search with fix-it workflow.

Co-authored-by: Cursor <cursoragent@cursor.com>

Documentation/setup.md

@@ -111,8 +111,11 @@ Open http://localhost:3001 (or your configured `PORT`).
 | `npm run migrate:thumbnails` | `db/migrate-thumbnails.sql` | Add thumbnail columns |
 | `npm run fetch-artist-images` | `scripts/fetch-artist-images.js` | Backfill portrait files *(if present)* |
 | `npm run sync-image-paths` | `scripts/sync-image-paths.js` | Align DB paths with disk *(if present)* |
-| `npm run update-influences` | `scripts/update-influences.js` | Insert influence edges from `art-influences-data.js` |
+| `npm run migrate:influence-sources` | `scripts/migrate-influence-sources.js` | Create `painting_influence_sources` + backfill legacy edges |
+| `npm run update-influences` | `scripts/update-influences.js` | Insert influence links (painting / artist / movement) from `art-influences-data.js` |
 | `npm run update-influences -- --fetch-images` | ↑ | Also download images for newly created works |
+| `npm run update-influences -- --discover` | ↑ | Curated pass + web discovery (Wikipedia, Wikidata, Met, art-history sites) |
+| `npm run discover-influences` | `update-influences.js --discover-only` | Discovery pass only |
 
 ### Scripts in the repository
 
@@ -121,7 +124,8 @@ These are checked in and maintained:
 - `image-fetcher.js` — Wikimedia / museum image resolution
 - `fetch-artist-bios.js` — artist biographies
 - `expand-paintings.js` + `famous-paintings-data.js` — catalog expansion
-- `update-influences.js` + `art-influences-data.js` — painting influence graph
+- `update-influences.js` + `art-influences-data.js` — influence graph (paintings, artists, movements)
+- `influence-discovery.js` + `influence-resolver.js` — web discovery and polymorphic source resolution
 - `fetch-missing-images.js` — batch image backfill
 - `regenerate-thumbnails.js`, `audit-painting-images.js`
 
@@ -153,7 +157,7 @@ After clone: copy `.env.example` → `.env`, install dependencies, run `npm run
 | Wrong painting in 3D gallery frame | Stale or mismatched thumbnail file | `npm run regenerate-thumbnails`; gallery prefers full `image_path` |
 | Wrong painting image (fetch) | Bad museum / search match on first download | Add entry to `DIRECT_IMAGE_OVERRIDES` in `scripts/image-fetcher.js`, re-fetch file |
 | Empty exit navigation lists | No `painting_influences` edges for artist | `npm run update-influences` |
-| Empty *Influenced By* / *Influenced* on painting detail | No edges for that work | `npm run update-influences`; extend `art-influences-data.js` |
+| Empty *Influenced By* / *Influenced* on painting detail | No edges for that work | `npm run migrate:influence-sources` then `npm run update-influences`; extend `art-influences-data.js` or run `--discover` |
 | No golden lamps above frames in 3D hall | Stale API process or no influence edges | Restart server after API changes; run `npm run update-influences` |
 | Default Vite page instead of gallery | `client/dist` missing or stale | `cd client && npm run build` |
 | Permission denied creating tables | `gallery` user lacks CREATE | Run admin grants, then migrate |