Refactor frontend components and dependencies

- Update ESLint configuration for frontend
- Refactor dialog components (ActivateJail, CreateAction, CreateFilter, CreateJail)
- Update JailsTab and RegexTesterTab components
- Refactor TopCountriesPieChart component
- Update package.json dependencies
- Update documentation (Tasks.md)
- Refactor CodeList component for jail page

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Docs/Tasks.md

@@ -611,7 +611,11 @@ Do **not** add a Content-Security-Policy meta tag; CSP should be set as an HTTP
 
 ---
 
-### TASK-030 — Add manual chunk splitting to `vite.config.ts`
+### TASK-030 — Add manual chunk splitting to `vite.config.ts` (done)
+
+**Where fixed:** `frontend/vite.config.ts`
+
+**Summary:** Implemented `build.rollupOptions.output.manualChunks` function that groups modules into four vendor chunks: `react-vendor`, `ui-vendor`, `chart-vendor`, and `geo-vendor`. This ensures stable, cacheable chunks across deployments.
 
 **Where found:** `frontend/vite.config.ts` — `build` section is absent entirely; Rollup uses its default single-chunk strategy.