[ci skip] f1-stream: add CDN token refresh, SvelteKit frontend, multi-stream layout (Phases 6-8)

- Phase 6: CDN token lifecycle with 3-strategy URL matching and periodic refresh
- Phase 7: SvelteKit 2/Svelte 5 frontend with schedule calendar and hls.js player
- Phase 8: Multi-stream layout supporting up to 4 simultaneous HLS streams
- Update Dockerfile to multi-stage build (Node.js frontend + Python backend)
- Switch deployment to :latest tag with Always pull policy for CI-driven deploys
- Update Woodpecker CI to use explicit latest tag

stacks/f1-stream/files/frontend/vite.config.js

@@ -0,0 +1,10 @@
+import { sveltekit } from '@sveltejs/kit/vite';
+import tailwindcss from '@tailwindcss/vite';
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+	plugins: [
+		tailwindcss(),
+		sveltekit()
+	]
+});