feat(npcs): inspect cards, Show overlay, and optional external link

Clicking an NPC tile opens description cards (multi-select accordion); Show puts avatars on screen. Optional URL opens a webview tab. Avatar pan in the editor commits on pointer up.

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

app/shared/video/videoPlaybackPerf.networkRegression.test.ts

@@ -21,4 +21,22 @@ void test('video playback: renderer hooks/components do not tick React each fram
   // Регресс: раньше был RAF loop с setState на каждом кадре.
   assert.doesNotMatch(previewSrc, /\brequestAnimationFrame\s*\(\s*loop\s*\)/);
   assert.doesNotMatch(previewSrc, /\brequestAnimationFrame\s*\(\s*loop\b/);
+  // timeupdate пишет scrub в DOM, без setState корня превью (дорого поверх декода видео).
+  assert.doesNotMatch(previewSrc, /\bsetTick\b/);
+  assert.ok(previewSrc.includes('paintScrub'));
+  assert.ok(previewSrc.includes('scrubFillRef'));
+});
+
+void test('editor scene cards do not decode full video files', () => {
+  const graph = fs.readFileSync(
+    path.join(root, 'app', 'renderer', 'editor', 'graph', 'SceneGraph.tsx'),
+    'utf8',
+  );
+  const editor = fs.readFileSync(
+    path.join(root, 'app', 'renderer', 'editor', 'EditorApp.tsx'),
+    'utf8',
+  );
+  assert.doesNotMatch(graph, /<video\b/);
+  assert.doesNotMatch(graph, /ContainedVideo/);
+  assert.doesNotMatch(editor, /sceneThumbVideo/);
 });