Apply COALESCE(NULLIF(...)) pattern to await_type, await_id, timeout_ns, and waiters fields in upsertIssueInTx. This prevents gate await fields from being cleared when importing issues from JSONL that don't have these fields (since gates are wisps and aren't exported to JSONL. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com> EOF )