Server tools to backfill, tail, mirror, and verify PLC logs

set synchronous_commit = off for backfill

idk if this is even measurable but why not

+1
+1
src/plc_pg.rs
··· 93 93 94 94 let t0 = Instant::now(); 95 95 let tx = client.transaction().await?; 96 + tx.execute("SET LOCAL synchronous_commit = off", &[]).await?; 96 97 97 98 let t_step = Instant::now(); 98 99 for table in ["operations", "dids"] {