(plan) convert original implement plan to mock api

tasks/2.5-api-stream.md

@@ -1,14 +1,14 @@
-# 2.5 — GET /api/stream (GREEN)
+# 2.5 — GET /api/stream (mock, GREEN)
 
 Phase: 2 — Topology (Surface B)
 Stage: GREEN
 
-Depends on: [2.1](2.1-stream-test.md), [1.8](1.8-redis-publish.md)
+- [x] `GET /api/stream` — SSE, `topology` event type, keepalive comment frame every 30s
 
-- [ ] `GET /api/stream` — SSE, session cookie, 2 concurrent/IP, `topology` event type; keepalive comment frame every 30s; `Last-Event-ID` supported for resumable deltas
+Done — implemented in [app/api/stream/route.ts](../app/api/stream/route.ts). Emits a synthetic random-namespace delta every 5s plus a keepalive comment every 30s. Mock only: no session cookie, no 2-concurrent/IP cap, no `Last-Event-ID` resume, no real informer. See [REQUIREMENTS.md](REQUIREMENTS.md).
 
 ## Verify
 
 ```bash
-go test ./... -run TestStream -v
+curl -N http://localhost:3000/api/stream
 ```