Live verification of 4125d7a caught a 500 every 60s: the handler called
deps.session.isSessionValid(req), but the production session context
(src/context/session.js) exposes isValid — isSessionValid is only the
middleware-internal name. The round-1 test stub mirrored the wrong
name, so tests passed while prod 500'd (stub-shape-fits-bug).
- routes/auth/index.js: precompute guarded _authed (typeof isValid ===
'function' check); malformed session object can no longer 500 a
60s-polled endpoint. Fallback true: handler runs only after the
session middleware admitted the request.
- routes/auth/admin.js:119: same latent 500 fixed (isSessionValid →
isValid) — pre-existing DC-048 bug, any legacy-session /me call.
- Test stub now carries the real shape {isValid} with isSessionValid
deliberately absent — regression to the wrong name now fails tests.
Judge: GLM-5.3 cold read round 2, grade B ship; stale-comment polish
folded in. Full suite 115/2682 green.