Post-merge follow-ups for PR #329 (shared CLI executable resolution):
- Negative-cache resolution misses with a doubling backoff (1min -> 5min
cap, cliResolveRetryDelayMs, mirroring claudeVersionRetryDelayMs): the
shared resolver cached success only, so a missing CLI re-ran the whole
chain - ending in a synchronous interactive login-shell spawn bounded by
the 5s EXEC_TIMEOUT_MS - on every /api/<cli>/status request and Run
attempt, stalling the event loop each time, forever. Success still caches
for the process lifetime, so an installed CLI is picked up within minutes
without a restart. Tests drive the backoff via an injectable clock
(createCliExecutableResolver `now` option, threaded through the
createPiResolverForTest / createAntigravityResolverForTest wrappers).
- Pass killSignal: 'SIGKILL' on the resolver's login-shell spawn and on the
pi/claude --version probes: execFileSync's timeout only SENDS the kill
signal and then keeps waiting for the child to exit, and interactive bash
ignores SIGTERM, so a login shell stuck in a blocking .bash_profile
survived the timeout and blocked the server permanently.
- Restore test hermeticity (PR #329 deleted pi's VITEST guards, and one
test pinned the deletion): under vitest the production resolver host now
replaces un-injected IO primitives with inert stubs - no real PATH
scanning, no login-shell spawns - and probePiVersion never executes a
`pi` candidate again (`pi` is a generic binary name, so route tests
hitting /api/pi/status executed whatever binary the machine carried).
Tests opt in through the runCommand/isExecutableFile injection hooks or
allowRealIoUnderVitest for real-filesystem fixtures. The deletion-pinning
test is replaced by behavioral pins, including a real-executable fixture
in the new test/pi-cli-resolver.test.ts that fails loudly if the pi gate
is ever removed again.
- Wire the six get*NotFoundMessage() exports (previously dead) into their
intended call sites: the createSession throws in tmux-manager and the
availability gates on POST /api/sessions and POST /api/quick-start in
session-routes, replacing a third hardcoded copy of the text. A not-found
error now names where resolution looked (server PATH, login shell,
checked directories). npm run knip no longer reports any unused export
from the resolver modules.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
