chore: import upstream snapshot with attribution

apps/sim/app/api/v1/copilot/chat/route.test.ts

@@ -0,0 +1,26 @@
+/**
+ * Tests for the deprecated v1 copilot chat API route
+ *
+ * @vitest-environment node
+ */
+import { NextRequest } from 'next/server'
+import { describe, expect, it } from 'vitest'
+import { POST } from '@/app/api/v1/copilot/chat/route'
+
+const URL = 'http://localhost:3000/api/v1/copilot/chat'
+
+describe('Deprecated v1 copilot chat route', () => {
+  it('POST returns 410 with a success:false error body', async () => {
+    const request = new NextRequest(URL, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json', 'x-api-key': 'sk-test' },
+      body: JSON.stringify({ message: 'hello' }),
+    })
+    const response = await POST(request)
+    expect(response.status).toBe(410)
+
+    const body = (await response.json()) as { success?: boolean; error?: string }
+    expect(body.success).toBe(false)
+    expect(body.error).toContain('deprecated')
+  })
+})

apps/sim/app/api/v1/copilot/chat/route.ts

@@ -0,0 +1,18 @@
+import { NextResponse } from 'next/server'
+import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
+
+/**
+ * POST /api/v1/copilot/chat
+ *
+ * Deprecated: the v1 headless copilot chat API has been removed. The endpoint
+ * returns 410 Gone for all callers.
+ */
+export const POST = withRouteHandler(async () =>
+  NextResponse.json(
+    {
+      success: false,
+      error: 'The v1 copilot chat API has been deprecated and is no longer available.',
+    },
+    { status: 410, headers: { 'Cache-Control': 'no-store' } }
+  )
+)