Initial commit: Tonemark PWA

Tonemark is a SvelteKit PWA for transcribing YouTube videos, audio
and video files, and microphone recordings using a local Whisper backend.

Features:
- Dark glassmorphic UI with electric-lime accent (5 switchable themes)
- Rail nav (desktop) / tab bar (mobile) layout
- Drop zone, YouTube URL input, and live audio recording inputs
- Audio mode waveform cards (none / standard / aggressive / auto)
- Real-time transcription progress with animated waveform
- Job queue with SSE streaming updates
- Push notifications on job completion
- PWA with native SvelteKit service worker
- SRT / TXT / MD / JSON transcript downloads

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

vitest.config.ts

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vitest/config';
+import path from 'path';
+
+export default defineConfig({
+	test: {
+		environment: 'node',
+		globals: true,
+		include: ['src/tests/**/*.test.ts'],
+		coverage: {
+			provider: 'v8',
+			reporter: ['text', 'html'],
+			include: ['src/lib/server/**/*.ts', 'src/routes/api/**/*.ts']
+		}
+	},
+	resolve: {
+		alias: {
+			'$lib': path.resolve('./src/lib')
+		}
+	}
+});