Diagnosed from session 508c8d58 (frontend freestyle run, WorkflowFailed):
three independent weak-model-hostile gates, none a model-capability problem.
- shell: split a collapsed single-string command line (["npm create vite …"])
into tokens instead of rejecting it as a "collapsed array". The model
reliably re-emits this shape; rejecting looped bootstrap_frontend until
stage_loop_break. JSON-escape mangles (quotes/commas in argv[0]) stay rejected.
- recovery: a stage_loop_break route now gets a "Stuck-loop ticket", not the
"Contract arbitration ticket". The arbitration prompt told the model to read
and reconcile "the files named below" — but a tool-syntax loop names zero
files, sending the recovery agent grepping the repo for 40+ turns until the
repair ladder exhausted.
- plan lint: H3 (unreferenced_prompt_artifact) demoted from hard failure to
soft finding, and seeds excluded from it. It word-matches artifact IDs in
free prose and cannot tell a forgotten dep from a descriptive mention, so as
a hard gate it burned architect retries on words it couldn't reword away
(analysis/dod). Hard tier is now deterministic graph facts only (H1/H2).
Tests: ShellToolTest, PlanLinterTest, RecoveryRoutingTest green; detekt clean.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015Ly2mMnt9TCZbvhcC1JfuV
kami
95b16a5047