Why: the 2026-10-05 dev outage — a restart with an explicit --addr rebuilt
the start args, and the rebuild branch dropped the persisted --dsn for the
dev env, so the binary resolved auth=auto to off on 0.0.0.0 and the new
listen guard refused to spawn; record_state then persisted the broken exec=
before the health probe, so bare starts kept failing.
Evidence: bash -n clean; sandbox registry with stub binaries — dbref DSN is
re-derived on rebuild (priority CLI > env > dbref), the pre-flight blocks
non-loopback without auth with actionable remedies, immediate-death starts
leave the previous exec= intact, and DSN masking covers all start-path log
lines; make test green.
Impact: dev/prod agent starts keep their DB binding across explicit-arg
rebuilds; failed starts no longer corrupt the registry; static/pg paths get
the same persist-after-probe ordering (pg already had it); no change to
deploy materialization or the binary guard semantics.
Refs: backend 8eda35f (listen guard), runtime/dev history.jsonl 01:23 fail
weichen
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