fix: update e2e test navigation to use direct routes

The index route (/) now shows WelcomeView instead of auto-redirecting
to board view. Updated test utilities to navigate directly to the
correct routes:

- navigateToBoard -> /board
- navigateToContext -> /context
- navigateToSpec -> /spec
- navigateToAgent -> /agent
- navigateToSettings -> /settings
- waitForBoardView -> navigates to /board first

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/ui/tests/utils/git/worktree.ts

@@ -458,8 +458,15 @@ export async function setupProjectWithStaleWorktree(page: Page, projectPath: str
 
 /**
  * Wait for the board view to load
+ * Navigates to /board first since the index route shows WelcomeView
  */
 export async function waitForBoardView(page: Page): Promise<void> {
+  // Navigate directly to /board route (index route shows welcome view)
+  const currentUrl = page.url();
+  if (!currentUrl.includes('/board')) {
+    await page.goto('/board');
+    await page.waitForLoadState('networkidle');
+  }
   await page.waitForSelector('[data-testid="board-view"]', { timeout: TIMEOUTS.long });
 }