Initial implementation of Telegram AI customer support bot

Cloudflare Workers + Hono + D1 + KV + R2 stack with 4 specialized AI agents
(onboarding, troubleshoot, asset, billing), OpenAI function calling with
7 tool definitions, human escalation, pending action approval workflow,
feedback collection, audit logging, i18n (ko/en), and Workers AI fallback.

43 source files, 45 tests passing.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vitest.config.ts

@@ -0,0 +1,26 @@
+import { defineConfig } from 'vitest/config';
+import path from 'path';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'node',
+    setupFiles: ['./tests/setup.ts'],
+    include: ['tests/**/*.test.ts'],
+    exclude: ['**/node_modules/**'],
+    coverage: {
+      provider: 'v8',
+      reporter: ['text', 'json', 'html'],
+      exclude: [
+        'node_modules/',
+        'tests/',
+        '**/*.test.ts',
+      ],
+    },
+  },
+  resolve: {
+    alias: {
+      '@': path.resolve(__dirname, './src'),
+    },
+  },
+});