fix(ui): detect VS Code from bootstrap config in shared runtime helpers

d2efa707 fixed projects-store detection via __VSCODE_CONFIG__, but
lib/desktop.isVSCodeRuntime (used by useDirectoryStore) still required
RuntimeAPIs. At webview startup that left directory init on stale
localStorage paths from other windows (#2359).

Share bootstrap detection in lib/vscodeBootstrap and use it from both
desktop runtime checks and the projects-store helper.

Co-authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/stores/useDirectoryStore.ts

@@ -2,6 +2,7 @@ import { create } from 'zustand';
 import { devtools } from 'zustand/middleware';
 import { opencodeClient } from '@/lib/opencode/client';
 import { getDesktopHomeDirectory, isVSCodeRuntime } from '@/lib/desktop';
+import { getVSCodeBootstrapConfig } from '@/lib/vscodeBootstrap';
 import { subscribeRuntimeEndpointChanged } from '@/lib/runtime-switch';
 import { updateDesktopSettings } from '@/lib/persistence';
 import { useFileSearchStore } from '@/stores/useFileSearchStore';
@@ -227,7 +228,7 @@ const getVsCodeWorkspaceFolder = (): string | null => {
   if (!isVSCodeRuntime()) {
     return null;
   }
-  const workspaceFolder = (window as unknown as { __VSCODE_CONFIG__?: { workspaceFolder?: unknown } }).__VSCODE_CONFIG__?.workspaceFolder;
+  const workspaceFolder = getVSCodeBootstrapConfig()?.workspaceFolder;
   if (typeof workspaceFolder !== 'string' || workspaceFolder.trim().length === 0) {
     return null;
   }

packages/ui/src/stores/utils/vscodeRuntime.test.ts

@@ -1,4 +1,5 @@
 import { describe, expect, test } from 'bun:test';
+import type { RuntimeAPIs } from '@/lib/api/types';
 import { isVSCodeRuntime } from './vscodeRuntime';
 
 describe('VS Code runtime detection', () => {
@@ -9,6 +10,13 @@ describe('VS Code runtime detection', () => {
     })).toBe(true);
   });
 
+  test('uses registered runtime APIs when bootstrap is absent', () => {
+    const runtimeApis = {
+      runtime: { platform: 'vscode', isDesktop: false, isVSCode: true },
+    } as RuntimeAPIs;
+    expect(isVSCodeRuntime(runtimeApis, null)).toBe(true);
+  });
+
   test('does not classify an unregistered web runtime as VS Code', () => {
     expect(isVSCodeRuntime(null, null)).toBe(false);
   });

packages/ui/src/stores/utils/vscodeRuntime.ts

@@ -1,18 +1,14 @@
 import type { RuntimeAPIs } from '@/lib/api/types';
+import {
+  getVSCodeBootstrapConfig,
+  isVSCodeBootstrapPresent,
+  type VSCodeBootstrapConfig,
+} from '@/lib/vscodeBootstrap';
 
-export interface VSCodeBootstrapConfig {
-  workspaceFolder?: unknown;
-  workspaceFolders?: unknown;
-}
-
-export const getVSCodeBootstrapConfig = (): VSCodeBootstrapConfig | null => {
-  if (typeof window === 'undefined') {
-    return null;
-  }
-  return (window as unknown as { __VSCODE_CONFIG__?: VSCodeBootstrapConfig }).__VSCODE_CONFIG__ ?? null;
-};
+export type { VSCodeBootstrapConfig };
+export { getVSCodeBootstrapConfig };
 
 export const isVSCodeRuntime = (
   runtimeApis: RuntimeAPIs | null,
-  bootstrapConfig = getVSCodeBootstrapConfig(),
-): boolean => Boolean(bootstrapConfig || runtimeApis?.runtime?.isVSCode);
+  bootstrapConfig: VSCodeBootstrapConfig | null = getVSCodeBootstrapConfig(),
+): boolean => Boolean(isVSCodeBootstrapPresent(bootstrapConfig) || runtimeApis?.runtime?.isVSCode);