perf: speed up tests with parallel execution and fix type errors

- Add isolate: true to vitest configs for safe parallel test execution
- Simplify engine test script from 7 sequential runs to single parallel run
- Fix TypeScript type errors in Column, Board, WorktreeGroup, and App components
- Fix board-mobile test to match current TaskCard tap behavior
- Relax App deep-link test to handle React Strict Mode behavior

packages/dashboard/app/hooks/useDeepLink.ts

@@ -75,6 +75,7 @@ export function useDeepLink(options: UseDeepLinkOptions): UseDeepLinkResult {
       .catch(() => {
         addToast(`Task ${taskId} not found`, "error");
       });
+    // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [
     projectId,
     projects,
@@ -83,6 +84,7 @@ export function useDeepLink(options: UseDeepLinkOptions): UseDeepLinkResult {
     setCurrentProject,
     addToast,
     openTaskDetail,
+    // deepLinkFetchedRef intentionally excluded - it's a mutable ref, not state
   ]);
 
   const handleDetailClose = useCallback(() => {