- Make reqwest::Client a LazyLock singleton instead of per-call allocation
- Parallelize 3 independent DB queries in get_index_advisor_report with tokio::join!
- Eliminate per-iteration Vec allocation in snapshot FK dependency loop
- Hoist try_local_pg_dump() call in SampleData clone mode to avoid double execution
- Evict stale schema cache entries on write to prevent unbounded memory growth
- Remove unused ValidationReport struct and config_path field
- Rename IndexRecommendationType variants to remove redundant suffix