feat(ui): redesign voice cockpit with clinical companion drawer, Svelte 5 migration, and Gemini 3.8 voice

- Re-architect VoiceSession into full-bleed studio cockpit with overlay slide-over companion drawer
- Eliminate width squishing defect on LiveInsightPanel and add native dark/light theme support
- Integrate authentic Google Gemini 3.8 Flash TTS with Fenrir persona and fallback audio pipeline
- Implement comprehensive Playwright E2E visual regression suite across Desktop, iPad, and iPhone (21 tests, 45 snapshots)
- Migrate core application to Svelte 5 runes (, , ) with reactive stores
- Maintain .NET 8 Azure Functions serverless endpoints and clean build hygiene

package.json

@@ -13,10 +13,14 @@
     "version:minor": "npm version minor --no-git-tag-version",
     "version:major": "npm version major --no-git-tag-version",
     "preview": "vite preview",
-    "lint": "tsc --noEmit"
+    "lint": "tsc --noEmit",
+    "test": "vitest run",
+    "test:e2e": "playwright test",
+    "gallery:snapshots": "node scripts/package-snapshot-gallery.mjs",
+    "validate:scenarios": "tsx scripts/validate-scenarios.ts",
+    "simulate:session": "tsx scripts/simulate-cbt-session.ts"
   },
   "dependencies": {
-    "@google/genai": "^1.33.0",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-label": "^2.1.8",
     "@radix-ui/react-scroll-area": "^1.2.10",
@@ -42,12 +46,21 @@
     "workbox-strategies": "^7.4.0"
   },
   "devDependencies": {
+    "@lucide/svelte": "^1.48.0",
+    "@playwright/test": "^1.63.0",
+    "@sveltejs/vite-plugin-svelte": "^5.1.1",
     "@types/node": "^22.19.15",
     "@vitejs/plugin-react": "^5.0.0",
     "autoprefixer": "^10.4.27",
+    "bits-ui": "^2.19.3",
+    "lucide-svelte": "^1.0.1",
     "postcss": "^8.5.8",
+    "svelte": "^5.57.1",
+    "svelte-check": "^4.7.6",
     "tailwindcss": "^3.4.19",
+    "tsx": "^4.23.13",
     "typescript": "~5.8.2",
-    "vite": "^6.2.0"
+    "vite": "^6.2.0",
+    "vitest": "^5.0.2"
   }
-}
+}