docs(architecture): health endpoint listed as /api/health but actual path is /health

[oleksandr-korin]

Summary

docs/memory/architecture.md lists the backend health endpoint as /api/health, but the actual served path is /health.

Verification

$ curl -s -o /dev/null -w "%{http_code}\n" http://localhost:8000/health
200
$ curl -s -o /dev/null -w "%{http_code}\n" http://localhost:8000/api/health
404

The OpenAPI spec also confirms /health (no /api/ prefix) is the correct path.

Fix

In docs/memory/architecture.md, update the row under "Auth, Users & MCP" that reads:

| GET | `/api/health` | Health check |

Replace with:

| GET | `/health` | Health check |

(Or move it out of the auth section entirely — it's not auth-related.)

How this surfaced

Caught during local Trinity smoke verification while running PR #553 (issue #67 — design system tokens). The verification used the architecture-documented endpoint and got a 404; falling back to /health worked.

Severity

P3 — pure documentation drift, no functional impact. Worth filing because /validate-architecture should ideally catch this, and it's the kind of thing new contributors would trip over.