The existing ZFC checks only compared issue counts, missing the case where
counts match but content differs (e.g., status=open vs status=closed).
Added Case 3 (bd-f2f) hash-based staleness detection:
- Before export, check if JSONL content hash differs from stored hash
- If hash mismatch detected, import JSONL first to get remote changes
- Then proceed with export to write merged state
This prevents the corruption scenario where:
1. Stale DB has old status values (e.g., status=closed)
2. Remote JSONL has correct values (e.g., status=open)
3. Export would overwrite correct JSONL with stale DB values
4. Git 3-way merge would propagate the corruption
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
7b1573c4d4