Why: the exec= reuse path stripped --dsn into the process environment (G1-7)
and record_state then persisted a DSN-less exec=, while the dbref fallback only
existed in the explicit-rebuild branch - the second bare restart after a
rebind silently dropped the database (SQLite fallback on loopback). Auth
preflight also matched --dsn on the command line only, so env-delivered DSN
with auth=auto was misjudged as unauthenticated.
Evidence: bash -n OK; make test-governance 115 tests OK (new tests/test_svc.py
11 cases; 10/11 fail against the pre-fix script); make test green; make build
OK; isolated real PostgreSQL 18.6 + real binary validation 27/27 (consecutive
restarts/deploy keep binding, psql-verified database identity, DB-down restart
fails without SQLite fallback or config loss, no credential leakage) - all
recorded via make evidence in the task card.
Impact: svc.env gains db=/dbref=/dsn= recovery keys (atomic 0600 writes);
start/restart/deploy/update/db share one resolver; invalid bindings, config
conflicts, mock coexistence and env-DSN-incapable binaries now refuse to
start instead of silently downgrading; legacy exec= DSN migrates idempotently;
docs/svc.md and script help updated.
Refs: task card .task/feature-svc-db-config-recover.md; user-approved plan
(2026-10-11 session message); AGENTS.md evidence gates.
weichen
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