T3 Code — binary path proof (base)
Commit: d290c1f1b6c93416dfda6c9f7cd15d928a9aeb4c
Environment: Linux; real local development server; fresh isolated database.
Fixture: empty synthetic project; executable wrappers delegate to installed CLIs.


--- grok / home path ---
grok: configured home wrapper path
{"provider":"grok","installed":false,"status":"error","auth":"unknown","message":"Grok CLI (`grok`) is not installed or not on PATH."}
{"status":"failed","reply":null,"error":"Failed to open grok provider session."}
CLI exit: 1
Server cause: Contained ACP command was not found on PATH
Wrapper invocations during turn: none

--- grok / absolute path ---
grok: configured absolute wrapper path
{"provider":"grok","installed":true,"status":"ready","auth":"authenticated","message":null}
{"status":"failed","reply":null,"error":"Failed to open grok provider session."}
CLI exit: 1
Server cause: CLI launched and answered ACP initialize; authentication method xai.api_key was not advertised.
Wrapper invocations during turn: grok session, grok session, grok session, grok session, grok session

--- pi / home path ---
pi: configured home wrapper path
{"provider":"pi","installed":false,"status":"error","auth":"unknown","message":"Pi CLI (`pi`) is not installed or not on PATH. Install with `npm install -g --ignore-scripts @earendil-works/pi-coding-agent`."}
{"status":"failed","reply":null,"error":"Failed to open pi provider session."}
CLI exit: 1
Server cause: Process spawn failed: ENOENT
Wrapper invocations during turn: none

--- pi / absolute path ---
pi: configured absolute wrapper path
{"provider":"pi","installed":true,"status":"ready","auth":"authenticated","message":null}
{"status":"completed","reply":"PATH_OK","error":null}
CLI exit: 0
Wrapper invocations during turn: pi session

Completed. No tests used as evidence.
AI-assisted; verified with the tests and tools listed above.