The sync validation was incorrectly triggering 'data loss detected' when issue count decreased after import, even for legitimate deletions recorded in deletions.jsonl. Changes: - Modified validatePostImport to accept jsonlPath and check deletions manifest - When issue count decreases, check if decrease is within recorded deletions - Updated all call sites in sync.go and daemon_sync.go - Added comprehensive tests for deletion-aware validation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>