Release v3.1.2

[3.1.2] - 2026-06-09

Fixed

• Logs no longer corrupt the stdio JSON-RPC stream. logtape's console sink maps
  info/debug to console.info/console.debug, which Node writes to stdout — the
  same channel the stdio transport uses for MCP JSON-RPC. At the default LOG_LEVEL=info
  the startup line and every per-request "Fetching …" log were emitted onto that stream,
  so a strict client could see malformed frames. All log levels now go to stderr, and a
  test drives the real server and asserts stdout carries only JSON-RPC.
• CACHE_MAX_SIZE=0 no longer hangs the server. The value reached the LRU cache
  unvalidated, and a non-positive maxSize made the eviction loop spin forever on the
  first cache write — the server hung on its first request. A non-positive or non-finite
  maxSize is now clamped to 1.
• Mastodon posts send an Idempotency-Key. The adapter read the option but no caller
  set it, so a retried post (model- or transport-driven) could duplicate. A key derived
  from the post's content is now sent, so an identical retry collapses to the original
  status server-side.
• LOG_LEVEL=warn works as documented. The CLI documents warn, but logtape's level
  is warning. The env value is now normalized (warn → warning, unknown values →
  info) so a documented or mistyped level can't misconfigure logging.

Security

• SSRF blocks and rate-limit denials are now recorded in the audit trail. The
  logSsrfBlocked and logRateLimitExceeded audit methods existed but had no callers, so
  the two most security-relevant events never appeared in the log. SSRF rejections are now
  audited at the central pinned-fetch path (initial URL and every redirect hop), and the
  three duplicated rate-limit guards are unified into one helper that audits before
  rejecting.

Changed

• Dead GitHub Discussions links removed. Discussions is disabled on the repository, so
  the /discussions links in the site footer, the troubleshooting page, and both
  llms.txt artifacts 404'd. They now point at GitHub Issues (the real support channel),
  with a test guarding against reintroducing them.