refactor(ext/popup): rename entry-* → item-* components

Git-moves the three popup components so history survives the content
rewrite that follows in Tasks 22–24:
- entry-list.ts   → item-list.ts
- entry-detail.ts → item-detail.ts
- entry-form.ts   → item-form.ts

Also renames the exported render functions (renderEntryList →
renderItemList, etc.) and updates popup.ts imports + render switch.
The files still wear @ts-nocheck and reference the old Entry type;
content rewriting happens in Tasks 22–24.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

extension/src/popup/popup.ts

@@ -7,9 +7,9 @@
 import type { Request, Response } from '../shared/messages';
 import type { ManifestEntry, Entry } from '../shared/types';
 import { renderUnlock } from './components/unlock';
-import { renderEntryList } from './components/entry-list';
-import { renderEntryDetail } from './components/entry-detail';
-import { renderEntryForm } from './components/entry-form';
+import { renderItemList } from './components/item-list';
+import { renderItemDetail } from './components/item-detail';
+import { renderItemForm } from './components/item-form';
 import { renderSettings } from './components/settings';
 
 // --- Escape HTML to prevent XSS ---
@@ -91,16 +91,16 @@ function render(): void {
       renderUnlock(app);
       break;
     case 'list':
-      renderEntryList(app);
+      renderItemList(app);
       break;
     case 'detail':
-      renderEntryDetail(app);
+      renderItemDetail(app);
       break;
     case 'add':
-      renderEntryForm(app, 'add');
+      renderItemForm(app, 'add');
       break;
     case 'edit':
-      renderEntryForm(app, 'edit');
+      renderItemForm(app, 'edit');
       break;
     case 'settings':
       renderSettings(app);