Archipelago — open-source initial import

aiui/packages/app/e2e/global-setup.ts

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+import { mkdirSync, writeFileSync, existsSync, readFileSync } from 'fs'
+import { resolve } from 'path'
+import { allTestConversations } from './fixtures/test-chats'
+
+const CHATS_PATH = resolve(process.cwd(), '.dev', 'chats.json')
+
+export default async function globalSetup() {
+  const dir = resolve(process.cwd(), '.dev')
+  if (!existsSync(dir)) mkdirSync(dir, { recursive: true })
+
+  // Backup existing chats if present (for local dev)
+  let backup: string | null = null
+  if (existsSync(CHATS_PATH)) {
+    backup = readFileSync(CHATS_PATH, 'utf-8')
+  }
+
+  const payload = {
+    conversations: allTestConversations,
+    activeConversationId: 'e2e-films',
+  }
+  writeFileSync(CHATS_PATH, JSON.stringify(payload, null, 2), 'utf-8')
+
+  // Store backup path for teardown (we pass via env since globalSetup/Teardown don't share scope easily)
+  if (backup) {
+    process.env.AIUI_E2E_CHATS_BACKUP = backup
+  }
+}