BEFORE | f7b81e1d1115
REAL SERVER OUTPUT EXCERPTS + READ-ONLY SQLITE CHECKS
Environment: Linux, Node server, isolated synthetic database

Case A: ledger ends at 069; schema already includes 070-072.
[08:56:10.713] ERROR (#2): MigrationError: Migration "71_PeerLinkFence" failed
[cause]: Error: duplicate column name: fenced
Server process exited with status 1; did not reach Listening on.
SQL: max(effect_sql_migrations.migration_id) = 69
SQL: synthetic peer row unchanged = True
SQL: synthetic peer fenced = 1
SQL: PRAGMA integrity_check = ok

Case B: same schema; ledger ends at 071 (isolates migration 072).
[08:56:12.323] ERROR (#2): MigrationError: Migration "72_WaitingLinkRequestIndex" failed
[cause]: Error: index orchestration_v2_projection_turn_items_waiting_link_idx already exists
Server process exited with status 1; did not reach Listening on.
SQL: max(effect_sql_migrations.migration_id) = 71
SQL: synthetic peer row unchanged = True
SQL: synthetic peer fenced = 1
SQL: PRAGMA integrity_check = ok

Seed peer-row SHA256 (same on all four databases):
e5608f8cfe0c2d68527c7c2668c616d626b08fd2efce1f78a7a7d67d4b4a28cc