- SEC-H6: remove conditional audience check in mcp/index.ts — audience is
now always enforced against the mcpResource URL. Add migration to revoke
pre-existing oauth_tokens with audience=NULL so dead rows don't linger.
- SEC-H4: validate doc.issuer against config.issuer inside discover() to
prevent a MITM'd discovery doc from supplying a crafted expected issuer.
verifyIdToken caller now passes config.issuer as ground truth, not
doc.issuer.
- tests: cover three new OIDC callback failure paths (no_id_token,
id_token_invalid, subject_mismatch) and two idempotency caps (key length
>128 chars returns 400, body >256 KiB skips caching).
- CI-C1 false positive: actions/{checkout,setup-node,upload-artifact}
@v6 do exist (v6.0.0 releases published Oct-Dec 2025). Restore the
@v6 refs — the earlier batch-1 commit downgraded them unnecessarily.
- Widen idempotency_keys primary key to (key, user_id, method, path)
via new migration. Batch 1 widened the middleware lookup but left
the table PK at (key, user_id), so `INSERT OR IGNORE` silently
skipped the second endpoint that reused a key — the cache was
never populated for it and a replay re-ran the handler. The
migration rebuilds the table preserving existing rows (the old
narrower PK guarantees no conflicts against the new looser key).
- HSTS: keep `includeSubDomains` OFF by default. Enabling it for
every NODE_ENV=production install would break apex-domain setups
where siblings still serve HTTP. Operators who want the stricter
policy opt in with HSTS_INCLUDE_SUBDOMAINS=true.
- Extend the idempotency unit tests to cover the (method, path)
dimension — same user+key on different path no longer replays.
jubnl