Two Phase-3 bats suites used `fail` (a bats-assert helper) but bats-assert
isn't installed on the alpha fleet (only bats-core), so every tripped
assertion crashed with `fail: command not found` (status 127) instead of
reporting a real pass/fail. Define the same minimal `fail() { echo ...;
return 1; }` the other suites already use (see mempool.bats). Without this
the gates were silently non-functional.
Also rewrite the obsolete "HealthCmd= implies Notify=healthy" assertion in
use-quadlet-backends-install.bats. Phase 3.4's Notify=healthy was
deliberately reverted: gating `systemctl start` on health hung boot
reconciliation for dependency-waiting apps (fedimint idles until Bitcoin
IBD; lnd until macaroon unlock), leaving units stuck "deactivating". The
renderer now emits HealthCmd= for Podman's health state but TimeoutStartSec=0
and NO Notify=healthy (quadlet.rs render() + contains_stale_health_gate()).
The test now asserts the current invariant: no backend unit gates start on
health.
Verified on the .228 canary node (ARCHIPELAGO_USE_QUADLET_BACKENDS=1):
use-quadlet-backends-install 6/6, backend-survives-archipelago-restart 3/3.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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