fix(03): revise plans based on checker feedback

.planning/phases/03-interaction-quality-and-completeness/03-02-PLAN.md

@@ -3,7 +3,7 @@ phase: 03-interaction-quality-and-completeness
 plan: 02
 type: execute
 wave: 1
-depends_on: []
+depends_on: ["03-00"]
 files_modified:
   - frontend/src/pages/CategoriesPage.tsx
   - frontend/src/pages/DashboardPage.tsx
@@ -105,6 +105,9 @@ export { Spinner }
   <name>Task 1: Create shared EmptyState component and wire into Dashboard and Categories pages</name>
   <files>frontend/src/components/EmptyState.tsx, frontend/src/pages/DashboardPage.tsx, frontend/src/pages/CategoriesPage.tsx</files>
   <action>
+    **Step 0 — Check shadcn registry first (per project skill rules):**
+    Run `bunx --bun shadcn@latest search -q empty` in the frontend directory. If shadcn provides an EmptyState or similar component, use it instead of creating a custom one. If nothing relevant is found (expected), proceed with custom component below.
+
     **Create `frontend/src/components/EmptyState.tsx`:**
     ```typescript
     interface EmptyStateProps {
@@ -128,7 +131,7 @@ export { Spinner }
     - Guard the grouped cards render with `{grouped.length > 0 && grouped.map(...)}` so both empty state and cards don't show simultaneously.
   </action>
   <verify>
-    <automated>cd /home/jean-luc-makiola/Development/projects/SimpleFinanceDash/frontend && bun run build</automated>
+    <automated>cd /home/jean-luc-makiola/Development/projects/SimpleFinanceDash/frontend && bun vitest run src/pages/DashboardPage.test.tsx src/pages/CategoriesPage.test.tsx && bun run build</automated>
   </verify>
   <done>EmptyState component exists and is used in DashboardPage (no-budgets case) and CategoriesPage (no-categories case). CategoriesPage has loading state to prevent empty-state flash. Build passes.</done>
 </task>
@@ -190,7 +193,7 @@ export { Spinner }
     **CRITICAL:** The ON DELETE RESTRICT constraint means deleting a category with budget items returns 500. The catch block handles this — the error message displays inline in the dialog. The dialog does NOT auto-close on error, letting the user read the message and dismiss manually.
   </action>
   <verify>
-    <automated>cd /home/jean-luc-makiola/Development/projects/SimpleFinanceDash/frontend && bun run build</automated>
+    <automated>cd /home/jean-luc-makiola/Development/projects/SimpleFinanceDash/frontend && bun vitest run src/pages/CategoriesPage.test.tsx && bun run build</automated>
   </verify>
   <done>Delete button opens confirmation dialog. Confirm executes delete with spinner. Error from ON DELETE RESTRICT shows inline. Cancel closes dialog. Build passes with zero errors.</done>
 </task>