Some models (GLM 5.2) send object params (reviewer_confirm's artifact,
write_schema_linking's schema_linking) as JSON-encoded strings. These failed
TypeBox validation before execute(), making the model retry in an unbounded loop
(observed ~2100s hang). jsonObjectOrSelf() coerces them back to objects in
prepareReviewerArguments and write_schema_linking.
Also close an anti-bypass gap: pi's write/edit tools were unrestricted on the gate
code, so a looping model actually patched tht-gate.js. GATE_CODE_FILES now blocks
any write under .pi/extensions. Requires a pi restart to take effect.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
marcopanandClaude Opus 4.8
a0a503b721