Add catalog search on timeline header and fix Back to Timeline navigation.

Public GET /api/search over artists, movements, and paintings with a debounced header bar on the timeline; Back to Timeline resets zoom and gallery session.

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

server/index.js

@@ -13,6 +13,7 @@ const { logCuratorAction } = require('./audit-log');
 const authRoutes = require('./routes/auth');
 const { ensurePaintingImages, preloadArtistImagesLocal, replacePaintingImageFromUrl, replaceArtistPortraitFromUrl, clearPaintingImage, deletePainting, clearArtistPortrait, replacePaintingImageFromBuffer, replaceArtistPortraitFromBuffer, enrichPaintingRow, enrichArtistRow, IMAGE_DIR } = require('./image-service');
 const { getVersionInfo } = require('./version-info');
+const { searchCatalog } = require('./search-service');
 const { searchGoogleImagesFirst, searchArtistPortraitFirst, searchPaintingImagesMany, searchArtistPortraitMany, fetchImageBuffer, friendlyImageFetchError, pickExt } = require('../scripts/image-fetcher');
 
 const app = express();
@@ -181,6 +182,23 @@ const INFLUENCED_SQL = `
   WHERE pis.source_painting_id = $1 AND pis.source_type = 'painting'
   ORDER BY p.year NULLS LAST, p.title`;
 
+app.get('/api/search', async (req, res) => {
+  try {
+    const q = typeof req.query.q === 'string' ? req.query.q : '';
+    const limit = parseInt(req.query.limit, 10);
+    const types = typeof req.query.types === 'string' ? req.query.types : undefined;
+    const result = await searchCatalog(q, {
+      limit: Number.isFinite(limit) ? limit : 20,
+      types,
+    });
+    res.setHeader('Cache-Control', 'no-store');
+    res.json(result);
+  } catch (err) {
+    console.error('Search error:', err.message);
+    res.status(500).json({ error: 'Search failed' });
+  }
+});
+
 app.get('/api/timeline', async (req, res) => {
   try {
     const { start, end } = req.query;