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>

client/src/types/index.ts

@@ -63,19 +63,33 @@ export interface Painting {
   has_influence_links?: boolean | string | number;
 }
 
+export type InfluenceSourceType = 'painting' | 'artist' | 'movement';
+
 export interface InfluenceLink {
-  notes: string;
-  source: string;
+  source_type: InfluenceSourceType;
+  notes?: string;
+  source?: string;
   aspects?: string;
   quote?: string;
   source_author?: string;
   source_url?: string;
-  id: number;
-  title: string;
-  year: number;
-  image_path: string;
-  artist_name: string;
-  artist_id: number;
+  confidence?: string;
+  discovered_via?: string;
+  period_note?: string;
+  period_start_year?: number | null;
+  period_end_year?: number | null;
+  id?: number;
+  title?: string;
+  year?: number | null;
+  image_path?: string | null;
+  artist_name?: string;
+  artist_id?: number;
+  source_artist_id?: number;
+  source_artist_name?: string;
+  artist_portrait?: string | null;
+  movement_id?: number;
+  movement_name?: string;
+  movement_color?: string;
 }
 
 export interface PaintingDetail {