(chore) add associate tasks

tasks/5.17-simplify-pass.md

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+# 5.17 — simplify skill pass (REFACTOR)
+
+Phase: 5 — Chat + Rate Limiter (Surface D)
+Stage: REFACTOR
+
+Depends on: [5.8](5.8-rate-limiting-tier3.md), [5.13](5.13-frontend-chat-component.md)
+
+- [ ] `simplify` pass on rate limiter + SSE chat handler
+
+## Verify
+
+```bash
+# load test at 20 concurrent clients
+# GPU sequence usage never exceeds 6, no upstream 5xx, queue drains
+pnpm test:e2e chat.e2e.ts   # required, must pass before merge
+```
+
+## Done — atlas v1 shipped
+
+Success criteria (from PLAN-atlas.md):
+- [ ] Protected services redirect unauthenticated to Authentik (if still applicable post decision #3)
+- [ ] Fabricated stats gone, real numbers or removed
+- [ ] `riotpiao.com` is the only public hostname (I1 held)
+- [ ] Golden redaction test passes against live-cluster fixture
+- [ ] Load test: 20 concurrent clients, GPU usage <= 6, no 5xx, queue drains