feat: add GET /api/provision/images endpoint

- Add handleGetOsImages handler in provision.ts
- Add getOsImages method in ProvisioningService
- Add route in index.ts
- Returns key, name, family, is_default for each OS image

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/handlers/provision.ts

@@ -338,6 +338,38 @@ export async function handleGetBalance(
   }
 }
 
+/**
+ * GET /api/provision/images
+ * Get available OS images
+ */
+export async function handleGetOsImages(
+  env: Env,
+  corsHeaders: Record<string, string>
+): Promise<Response> {
+  try {
+    const provisioningService = new ProvisioningService(
+      env,
+      env.DB,
+      env.USER_DB
+    );
+
+    const images = await provisioningService.getOsImages();
+
+    // Return simplified image list for API consumers
+    const response = images.map((img) => ({
+      key: img.key,
+      name: img.name,
+      family: img.family,
+      is_default: img.is_default === 1,
+    }));
+
+    return createSuccessResponse({ images: response }, 200, corsHeaders);
+  } catch (error) {
+    console.error('[handleGetOsImages] Error:', error);
+    return createErrorResponse('Internal server error', 500, undefined, corsHeaders);
+  }
+}
+
 /**
  * Map error codes to HTTP status codes
  */

src/index.ts

@@ -16,6 +16,7 @@ import {
   handleGetOrder,
   handleDeleteOrder,
   handleGetBalance,
+  handleGetOsImages,
 } from './handlers/provision';
 import { handleProvisionQueue } from './handlers/queue';
 import type { ProvisionQueueMessage } from './types';
@@ -113,6 +114,10 @@ export default {
           return handleGetBalance(request, env, corsHeaders);
         }
 
+        if (path === '/api/provision/images' && request.method === 'GET') {
+          return handleGetOsImages(env, corsHeaders);
+        }
+
         // Dynamic route: /api/provision/orders/:id
         const orderMatch = path.match(/^\/api\/provision\/orders\/([a-zA-Z0-9-]+)$/);
         if (orderMatch) {

src/services/provisioning-service.ts

@@ -371,6 +371,13 @@ export class ProvisioningService {
     return { balance_krw: balance, user_id: user.id };
   }
 
+  /**
+   * Get available OS images
+   */
+  async getOsImages() {
+    return this.repo.getActiveOsImages();
+  }
+
   /**
    * Delete a server (terminate) - requires telegram_id for authorization
    */