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>

scripts/harmonize-db.js

@@ -30,6 +30,8 @@ const CATALOG_TABLES = [
   'painting_influence_sources',
   'painting_annotations',
   'entity_translations',
+  'tours',
+  'tour_stops',
 ];
 
 const NATURAL_KEY_FN = {
@@ -42,6 +44,8 @@ const NATURAL_KEY_FN = {
   painting_influence_sources: (r) => `${r.painting_id}:${r.source_type}:${r.source_painting_id || 0}:${r.source_artist_id || 0}:${r.source_movement_id || 0}`,
   painting_annotations: (r) => `${r.painting_id}:${String(r.label || '').trim().toLowerCase()}:${r.sort_order}`,
   entity_translations: (r) => `${r.entity_type}:${r.entity_id}:${r.locale}:${r.field_name}`,
+  tours: (r) => `tour:${r.id}`,
+  tour_stops: (r) => `${r.tour_id}:${r.painting_id}`,
 };
 
 function parseArgs(argv) {