Add debug Remove entry, Show more auto-picker, and update docs.

DELETE /api/paintings/:id removes works and image files with gallery refresh and catalog navigation; Show more opens the search modal on load; documentation updated for migrate schema and debug workflow.

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

client/src/api/client.ts

@@ -215,6 +215,15 @@ export const api = {
       return res.json() as Promise<FixPaintingImageResult>;
     }),
 
+  deletePainting: (id: number) =>
+    fetch(`${API}/paintings/${id}`, { method: 'DELETE' }).then(async (res) => {
+      if (!res.ok) {
+        const body = await res.json().catch(() => ({}));
+        throw new Error(body.error || `Remove failed: ${res.status}`);
+      }
+      return res.json() as Promise<{ id: number; artistId: number; title: string }>;
+    }),
+
   uploadPaintingImage: async (id: number, file: File) => {
     const payload = await fileToBase64Payload(file);
     return postJsonImageAction<FixPaintingImageResult>(`${API}/paintings/${id}/upload-image`, payload);