Add checkup review flags, duplicate detection, and corrected painting images.

Introduce checkup_checked/checkup_fixed on paintings with Checkup page filters and API. Fixed paintings auto-mark as reviewed. Add find-duplicates tooling and document debug/checkup workflow. Include Botticelli and Michelangelo image fixes from checkup.

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

scripts/find-duplicate-paintings-near.js

@@ -0,0 +1,51 @@
+require('dotenv').config();
+const pool = require('../server/db');
+
+async function main() {
+  const sameWiki = await pool.query(`
+    SELECT a.name AS artist, p.wikipedia_title, COUNT(*)::int AS cnt,
+           array_agg(p.id ORDER BY p.id) AS ids,
+           array_agg(p.title ORDER BY p.id) AS titles,
+           array_agg(COALESCE(p.year::text, '?') ORDER BY p.id) AS years
+    FROM paintings p
+    JOIN artists a ON a.id = p.artist_id
+    WHERE p.wikipedia_title IS NOT NULL AND p.wikipedia_title <> ''
+    GROUP BY a.id, a.name, p.wikipedia_title
+    HAVING COUNT(*) > 1
+    ORDER BY cnt DESC, a.name
+    LIMIT 30
+  `);
+
+  const sameImage = await pool.query(`
+    SELECT a.name AS artist, p.image_path, COUNT(*)::int AS cnt,
+           array_agg(p.id ORDER BY p.id) AS ids,
+           array_agg(p.title ORDER BY p.id) AS titles
+    FROM paintings p
+    JOIN artists a ON a.id = p.artist_id
+    WHERE p.image_path IS NOT NULL AND p.image_path <> ''
+    GROUP BY a.id, a.name, p.image_path
+    HAVING COUNT(*) > 1
+    ORDER BY cnt DESC, a.name
+    LIMIT 20
+  `);
+
+  console.log('=== Same Wikipedia title (different painting rows) ===');
+  console.log(`Groups: ${sameWiki.rows.length} shown (top 30)`);
+  for (const row of sameWiki.rows) {
+    console.log(`\n[${row.cnt}x] ${row.artist} — wiki: "${row.wikipedia_title}"`);
+    row.titles.forEach((t, i) => console.log(`  id ${row.ids[i]}: "${t}" (${row.years[i]})`));
+  }
+
+  console.log('\n=== Same image file (different painting rows) ===');
+  for (const row of sameImage.rows) {
+    console.log(`\n[${row.cnt}x] ${row.artist} — ${row.image_path}`);
+    row.titles.forEach((t, i) => console.log(`  id ${row.ids[i]}: "${t}"`));
+  }
+
+  await pool.end();
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});