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

test/scenarios.test.ts

@@ -0,0 +1,34 @@
+import { describe, test, expect } from 'vitest';
+import { SCENARIOS, CBT_GLOSSARY } from '../constants';
+import { validateScenario } from '../scripts/validate-scenarios';
+
+describe('CBT Clinical Scenarios Catalog', () => {
+  test('should contain exactly 14 pre-calibrated default scenarios', () => {
+    expect(SCENARIOS.length).toBe(14);
+  });
+
+  test('every scenario should pass strict schema validation with zero errors', () => {
+    for (const scenario of SCENARIOS) {
+      const result = validateScenario(scenario);
+      expect(result.isValid).toBe(true);
+      expect(result.errors.length).toBe(0);
+    }
+  });
+
+  test('every scenario should have an assigned character name and non-empty initial message', () => {
+    for (const scenario of SCENARIOS) {
+      expect(scenario.characterName && scenario.characterName.trim().length > 0).toBe(true);
+      expect(scenario.initialMessage && scenario.initialMessage.trim().length > 0).toBe(true);
+      expect(scenario.systemInstruction.includes('INTERNAL CBT LOGIC')).toBe(true);
+    }
+  });
+
+  test('CBT glossary should contain valid definitions for all categories', () => {
+    expect(CBT_GLOSSARY.length).toBeGreaterThanOrEqual(18);
+    for (const entry of CBT_GLOSSARY) {
+      expect(entry.term && entry.term.trim().length > 0).toBe(true);
+      expect(entry.definition && entry.definition.trim().length > 0).toBe(true);
+      expect(['Distortion', 'Technique', 'Concept'].includes(entry.category)).toBe(true);
+    }
+  });
+});