Initial commit: Brachnha Insight project setup

- Next.js 14+ with App Router and TypeScript
- Tailwind CSS and ShadCN UI styling
- Zustand state management
- Dexie.js for IndexedDB (local-first data)
- Auth.js v5 for authentication
- BMAD framework integration

Co-Authored-By: Claude <noreply@anthropic.com>

tests/support/fixtures/offline.fixture.ts

@@ -0,0 +1,27 @@
+import { test as base, BrowserContext } from '@playwright/test';
+
+type OfflineFixture = {
+    goOffline: (context: BrowserContext) => Promise<void>;
+    goOnline: (context: BrowserContext) => Promise<void>;
+};
+
+export const test = base.extend<{ offlineControl: OfflineFixture }>({
+    offlineControl: async ({ }, use) => {
+        const offlineFixture = {
+            goOffline: async (context: BrowserContext) => {
+                await context.setOffline(true);
+                for (const page of context.pages()) {
+                    await page.evaluate(() => window.dispatchEvent(new Event('offline'))).catch(() => { });
+                }
+            },
+            goOnline: async (context: BrowserContext) => {
+                await context.setOffline(false);
+                for (const page of context.pages()) {
+                    await page.evaluate(() => window.dispatchEvent(new Event('online'))).catch(() => { });
+                }
+            },
+        };
+
+        await use(offlineFixture);
+    },
+});