28300e19fd
TRUNCATE-everything ResetDB before every test forces a commit fsync; the CI DB is rebuilt each run so durability buys nothing. ALTER SYSTEM via docker exec (the services: block can't override the postgres command line). Non-fatal so a perms surprise degrades to slow, never red. Per the playbook the operator shared from another project (~17x speedup observed there). Measure before/after in the next two CI runs.