feat(cache): implement Redis caching for search & analytics hot paths

- Add TTL-specific cache durations: district stats (5min), market report (15min), heatmap (5min)
- Add Redis caching to GeoSearch handler with 60s TTL
- Add cache invalidation on listing.approved, listing.updated, listing.deactivated, listing.sold events
- Invalidate search, geo_search, and all analytics cache prefixes on listing state changes
- Update tests for new CacheService dependency in event handler and geo-search handler

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/web/vitest.config.ts

@@ -1,9 +1,14 @@
+import react from '@vitejs/plugin-react';
 import path from 'path';
 import { defineConfig } from 'vitest/config';
 
 export default defineConfig({
+  plugins: [react()],
   test: {
-    include: ['**/__tests__/**/*.spec.ts', '**/__tests__/**/*.test.ts'],
+    include: ['**/__tests__/**/*.spec.ts', '**/__tests__/**/*.test.ts', '**/__tests__/**/*.spec.tsx', '**/__tests__/**/*.test.tsx'],
+    environment: 'jsdom',
+    setupFiles: ['./vitest.setup.ts'],
+    globals: true,
   },
   resolve: {
     alias: {