The plan reduces 79 indexes to 20 by:

- **Eliminating entire categories**: all `shared`-prefixed (16), all user/project sort variants (11), all standalone single-filter sorts (11)
- **Consolidating**: cluster+jobstate sort variants replaced by `(cluster, sort_col)` which works for any state combo with LIMIT
- **Keeping what matters**: the indexes SQLite actually picks with ANALYZE — `jobs_starttime`, `jobs_cluster_starttime_duration`, `jobs_user_starttime_duration`, `jobs_cluster_jobstate_duration_starttime`, and a few secondary sort indexes

Key trade-off: ~20% of queries that sort by rare columns (num_hwthreads, num_acc, energy) with a state filter will now do a cheap per-row state check instead of using a 3-column composite. With LIMIT this is negligible.