perf: streamline provider and agent startup loading #185

Avoids loading the full provider catalog on startup
Prewarms project config in the background
Prevents duplicate worktree-scoped config requests

packages/ui/src/stores/useSessionFoldersStore.test.ts

@@ -0,0 +1,79 @@
+import { beforeEach, describe, expect, mock, test } from 'bun:test';
+
+const storage = new Map<string, string>();
+let storageSetCount = 0;
+
+const safeStorage = {
+  getItem: (key: string) => storage.get(key) ?? null,
+  setItem: (key: string, value: string) => {
+    storageSetCount += 1;
+    storage.set(key, value);
+  },
+  removeItem: (key: string) => {
+    storage.delete(key);
+  },
+  clear: () => {
+    storage.clear();
+  },
+  key: (index: number) => Array.from(storage.keys())[index] ?? null,
+  get length() {
+    return storage.size;
+  },
+} as Storage;
+
+mock.module('./utils/safeStorage', () => ({
+  getSafeStorage: () => safeStorage,
+}));
+
+mock.module('@/lib/desktop', () => ({
+  isVSCodeRuntime: () => false,
+}));
+
+mock.module('@/lib/runtime-fetch', () => ({
+  runtimeFetch: mock(async () => new Response('{}', { headers: { 'Content-Type': 'application/json' } })),
+}));
+
+const { useSessionFoldersStore } = await import('./useSessionFoldersStore');
+
+const waitForPersist = () => new Promise((resolve) => setTimeout(resolve, 350));
+
+describe('useSessionFoldersStore folder assignments', () => {
+  beforeEach(() => {
+    storage.clear();
+    storageSetCount = 0;
+    useSessionFoldersStore.setState({
+      foldersMap: {},
+      collapsedFolderIds: new Set<string>(),
+    });
+  });
+
+  test('repeated addSessionToFolder to the same folder preserves foldersMap reference', async () => {
+    const store = useSessionFoldersStore.getState();
+    const folder = store.createFolder('/workspace/project', 'Work');
+    store.addSessionToFolder('/workspace/project', folder.id, 'ses_1');
+    await waitForPersist();
+    storageSetCount = 0;
+
+    const before = useSessionFoldersStore.getState().foldersMap;
+    useSessionFoldersStore.getState().addSessionToFolder('/workspace/project', folder.id, 'ses_1');
+    await waitForPersist();
+
+    expect(useSessionFoldersStore.getState().foldersMap).toBe(before);
+    expect(storageSetCount).toBe(0);
+  });
+
+  test('repeated addSessionsToFolder to the same folder preserves foldersMap reference', async () => {
+    const store = useSessionFoldersStore.getState();
+    const folder = store.createFolder('/workspace/project', 'Batch');
+    store.addSessionsToFolder('/workspace/project', folder.id, ['ses_1', 'ses_2']);
+    await waitForPersist();
+    storageSetCount = 0;
+
+    const before = useSessionFoldersStore.getState().foldersMap;
+    useSessionFoldersStore.getState().addSessionsToFolder('/workspace/project', folder.id, ['ses_1', 'ses_2']);
+    await waitForPersist();
+
+    expect(useSessionFoldersStore.getState().foldersMap).toBe(before);
+    expect(storageSetCount).toBe(0);
+  });
+});