Phase 3: HTMX & Alpine.js integration, router refactoring, and UI modernization

- Modernized the frontend with HTMX for server-driven UI and Alpine.js for client state.
- Refactored anime, player, and recommendation logic into modular routers.
- Updated README.md to reflect the latest project state and technologies (v2.4).
- Added Plyr.io for an improved streaming experience.
- Improved project structure with componentized templates.
- Added Playwright and Vitest configuration for frontend testing.

vite.config.js

@@ -0,0 +1,14 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'jsdom',
+    include: ['static/js/__tests__/**/*.test.js'],
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      reportsDirectory: 'htmlcov',
+    },
+  },
+});