A CLI installed by nvm, Homebrew or a user-level npm prefix lives on a PATH that
only a login shell sets up. Codeman running under systemd or launchd does not get
that PATH — launchd hands a job `/usr/bin:/bin:/usr/sbin:/sbin` — so every
resolver reported the CLI as unavailable on installs where it is plainly there
and works from a terminal.
Each of the six resolvers had its own hand-rolled copy of the same PATH walk, so
the fix is factored into one shared `createCliExecutableResolver()` with an
explicit lookup order: the server process PATH, then common install directories in
order, then an interactive login shell as the last resort. Only the last step
spawns anything, and only when the cheap lookups have already missed.
Also adds `formatCliNotFoundMessage()`, so a failure explains where it looked
instead of just asserting the CLI is missing. Its diagnostics are bounded and
control characters are flattened, so a not-found message cannot dump arbitrary
environment data.
Success is cached and failure is retried, so installing a CLI while the server is
running is picked up without a restart.
Net -103 lines across the six resolvers. Behaviour is unchanged wherever the CLI
was already on the process PATH: that remains the first thing checked.
Tests: 20 cases in test/cli-executable-resolver.test.ts covering the precedence
order, login-shell-only resolution, the caching rule, unsafe-name rejection, and
the bounded diagnostics.
Second review pass on #282, the three items left open after f4dcfbe.
1. `codeman doctor` and the run mode disagreed about pi. The registry entry
accepted a bare `which pi` hit while pi-cli-resolver demanded semver-shaped
`--version` output, so the Dependencies panel could report an installed Pi CLI
on a box where Run Pi stays hidden, which reads as a broken mode rather than a
missing install. Both sides now share one exported PI_VERSION_REGEX, and
PathResolver gains an opt-in `requireVersionMatch` so a binary that fails the
shape check is reported MISSING instead of installed-with-unknown-version.
Only pi sets it; every other tool keeps its current behaviour.
2. The isAltScreenStripMode comment justified excluding pi with "the alt screen
is load-bearing for its fullscreen TUI". That is not what exclusion does: pi
is tmux-backed, so it falls through to isMuxAltScreenOnlyStripMode, which
strips the alt-screen toggles anyway. What exclusion actually preserves is
`\x1b[3J` and the mouse DECSETs, which is the real reason (pi renders into the
main screen and is mouse-aware). Comment and changeset now say that, and state
the consequence: fullscreen pi paints into the main buffer, like vim in a tmux
shell session.
3. skills/codeman still enumerated the five pre-pi modes in nine places, telling
agents a backend does not exist and understating class-wide caveats by one
mode. All updated, plus stale session.ts line references refreshed.
Tests: a new static guard derives the mode set from the Zod schema (not a copy)
and fails when a skill enumeration lists a partial set of external CLIs, verified
by mutation. It also documents the one legitimate exception it found: the "writes
no transcript" lists drop codex, which does write a rollout Codeman reads back.
Plus doctor cases for an unrelated `pi` on PATH and registry/resolver regex parity.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
SessionMode gains 'pi', a first-class backend alongside Claude Code,
OpenCode, Codex, Gemini and Antigravity: its own PTY, tmux session, rose
tab identity, welcome button, run-mode entry, cron agentType, Docker and
remote-SSH command defaults, and clone-repo Brain option.
Pi is a different shape of CLI from the other four, and three decisions
follow from that:
- It has NO permission prompts and no sandbox, so there is no
--dangerously-skip-permissions analog and none was invented. The
privilege-shaped knob is the tri-state approveProjectTrust, which makes
pi load and EXECUTE repo-local .pi/extensions TypeScript and install
missing project packages. clampExternalCliBypassForOwner() therefore
puts pi in the MATERIALIZE branch: a non-granted multi-user owner gets
--no-approve even when no config was sent, because pi's own default is
a prompt the session user could answer themselves. That helper had zero
test coverage; it now has coverage for all four CLIs.
- Only the PI_ prefix joins the env allowlist. Pi's ~34 provider key vars
share no prefix and ALLOWED_ENV_PREFIXES is one global list with no mode
context, so admitting them would widen the allowlist for every mode at
once. Auth goes through pi's /login or the server's own environment.
--api-key is deliberately never wired: it would put a provider secret on
the spawn command line.
- pi stays OUT of isAltScreenStripMode(). Its default TUI renders into the
main screen with terminal-owned scrollback, and its 0.84.0 fullscreen
mode is runtime-switchable via /settings; that flip was measured to put
the pane into the alt screen, which the strip would have corrupted.
pi-cli-resolver.ts additionally sanity-probes `pi --version` and requires
semver-shaped output, because `pi` is a short generic name a stray binary
can shadow; GET /api/pi/status surfaces path and version so a
misresolution is diagnosable rather than presenting as a broken mode.
Docker installs pi in its own --ignore-scripts step so that flag cannot
affect the other four CLIs, and seeds its credentials per-file rather than
whole-dir (~/.pi/agent also holds sessions, extensions and package trees).
Verified end to end against pi 0.84.1 on an isolated instance: resolver
search-dir fallback, flag construction, piConfig persistence across a full
server restart, the trust prompt and its --no-approve suppression, the
rose Run button on the default daylight-blue skin (the nested skin block
eats per-mode gradients unless the rule lives inside it), and the buffer
local-echo policy, which pi tolerates where codex did not.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Aamer Akhter