Add guided tours and unify left-to-right hall wall hang.

Visitors walk published tours in a 3D hall with stop notes; curators edit drafts via Tour editor. All galleries (artist, movement, tour) place the first work left of the entrance view and the last on the right.

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

server/index.js

@@ -27,6 +27,7 @@ const {
 } = require('./translation-service');
 const translationRoutes = require('./routes/translations');
 const influenceRoutes = require('./routes/influences');
+const tourRoutes = require('./routes/tours');
 const { searchGoogleImagesFirst, searchArtistPortraitFirst, searchPaintingImagesMany, searchArtistPortraitMany, fetchImageBuffer, friendlyImageFetchError, pickExt } = require('../scripts/image-fetcher');
 
 const app = express();
@@ -45,6 +46,7 @@ app.use(createSessionMiddleware());
 app.use('/api/auth', authRoutes);
 app.use('/api/translations', translationRoutes);
 app.use('/api/influences', influenceRoutes);
+app.use('/api/tours', tourRoutes);
 app.use(
   '/images',
   express.static(IMAGE_DIR, {