Add curator Influences tool with import wizard, CRUD, and graph.

CSV/JSON/XLSX mapping wizard expands artist-level rows to all paintings, blocks duplicate file/data imports via content and payload hashes, and documents the workflow in influence-import.md.

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

client/src/pages/HomePage.tsx

@@ -8,6 +8,7 @@ import PaintingDetailView from '../components/PaintingDetail';
 import ArtistBio from '../components/ArtistBio';
 import CheckupPage from '../pages/CheckupPage';
 import TranslationsPage from '../pages/TranslationsPage';
+import InfluencesPage from '../pages/InfluencesPage';
 import CuratorLoginModal from '../components/CuratorLoginModal';
 import CatalogSearchBar from '../components/CatalogSearchBar';
 import LocaleSwitcher from '../components/LocaleSwitcher';
@@ -16,6 +17,7 @@ import '../components/CatalogSearchBar.css';
 import '../components/CuratorLoginModal.css';
 import '../components/LocaleSwitcher.css';
 import '../pages/TranslationsPage.css';
+import '../pages/InfluencesPage.css';
 import { useAuth } from '../context/AuthContext';
 import { api, setApiLocale, type FixPaintingImageResult, type FixArtistPortraitResult } from '../api/client';
 import type { TimelineData, Artist, ArtistDetail, Painting, PaintingDetail, MovementGalleryDetail } from '../types';
@@ -28,6 +30,7 @@ type View =
   | { type: 'timeline' }
   | { type: 'checkup' }
   | { type: 'translations' }
+  | { type: 'influences' }
   | { type: 'gallery'; artistId: number; data: ArtistDetail }
   | { type: 'movement-gallery'; movementId: number; data: MovementGalleryDetail }
   | { type: 'painting'; paintingId: number; data: PaintingDetail; returnTo: View }
@@ -128,7 +131,7 @@ export default function HomePage() {
   const [debugMode, setDebugMode] = useState(readDebugMode);
   const [debugShowMore, setDebugShowMore] = useState(readDebugShowMore);
   const [loginOpen, setLoginOpen] = useState(false);
-  const [loginRedirect, setLoginRedirect] = useState<'checkup' | 'translations' | null>(null);
+  const [loginRedirect, setLoginRedirect] = useState<'checkup' | 'translations' | 'influences' | null>(null);
   const effectiveDebugMode = debugMode && isCurator;
   const [galleryRevision, setGalleryRevision] = useState(0);
   const viewRef = useRef(view);
@@ -222,7 +225,7 @@ export default function HomePage() {
     writeDebugShowMore(enabled);
   };
 
-  const openCuratorLogin = (redirect: 'checkup' | 'translations' | null = null) => {
+  const openCuratorLogin = (redirect: 'checkup' | 'translations' | 'influences' | null = null) => {
     setLoginRedirect(redirect);
     setLoginOpen(true);
   };
@@ -234,6 +237,8 @@ export default function HomePage() {
       setView({ type: 'checkup' });
     } else if (loginRedirect === 'translations') {
       setView({ type: 'translations' });
+    } else if (loginRedirect === 'influences') {
+      setView({ type: 'influences' });
     }
     setLoginRedirect(null);
   };
@@ -242,7 +247,7 @@ export default function HomePage() {
     await logout();
     writeDebugMode(false);
     setDebugMode(false);
-    if (view.type === 'checkup' || view.type === 'translations') {
+    if (view.type === 'checkup' || view.type === 'translations' || view.type === 'influences') {
       goToTimelineHome();
     }
   };
@@ -263,6 +268,14 @@ export default function HomePage() {
     setView({ type: 'translations' });
   };
 
+  const openInfluences = () => {
+    if (!isCurator) {
+      openCuratorLogin('influences');
+      return;
+    }
+    setView({ type: 'influences' });
+  };
+
   const handlePaintingImageFixed = useCallback(async (paintingId: number, fixResult: FixPaintingImageResult) => {
     const data = await api.getPainting(paintingId);
     const patch: Partial<Painting> = {
@@ -746,6 +759,25 @@ export default function HomePage() {
         </div>
       )}
 
+      {view.type === 'influences' && (
+        isCurator ? (
+          <InfluencesPage onBack={goToTimelineHome} />
+        ) : (
+          <div className="curator-login-gate">
+            <h2>{t('curatorRequiredTitle')}</h2>
+            <p>{t('curatorRequiredBody')}</p>
+            <div className="curator-login-gate-actions">
+              <button type="button" className="checkup-link-btn" onClick={() => openCuratorLogin('influences')}>
+                {t('curatorLogin')}
+              </button>
+              <button type="button" className="debug-mode-toggle" onClick={goToTimelineHome}>
+                {t('backToGalleryBtn')}
+              </button>
+            </div>
+          </div>
+        )
+      )}
+
       {view.type === 'translations' && (
         isCurator ? (
           <TranslationsPage onBack={goToTimelineHome} />
@@ -824,6 +856,14 @@ export default function HomePage() {
                     />
                     Show more
                   </label>
+                  <button
+                    type="button"
+                    className="checkup-link-btn"
+                    onClick={openInfluences}
+                    title="Manage influence links"
+                  >
+                    {t('influences')}
+                  </button>
                   <button
                     type="button"
                     className="checkup-link-btn"