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>

scripts/migrate-influence-sources.js

@@ -0,0 +1,18 @@
+require('dotenv').config();
+const fs = require('fs');
+const path = require('path');
+const pool = require('../server/db');
+
+async function main() {
+  const sqlPath = path.join(__dirname, '../db/migrate-influence-sources.sql');
+  const sql = fs.readFileSync(sqlPath, 'utf8');
+  await pool.query(sql);
+  const { rows } = await pool.query('SELECT COUNT(*)::int AS n FROM painting_influence_sources');
+  console.log(`painting_influence_sources ready (${rows[0].n} rows)`);
+  await pool.end();
+}
+
+main().catch((err) => {
+  console.error(err);
+  process.exit(1);
+});