Greenfield discovery/analyst stages thrashed on plane-2 REFERENCE_EXISTS
rejections: the model listed a not-yet-created dir (e.g. frontend/), got
hard-BLOCKED every round, and burned MAX_TOOL_ROUNDS without progress.
- New ToolCapability.DIRECTORY_LIST; ListDirTool declares it alongside
FILE_READ. ReferenceExistsRule now exempts directory enumeration (a
listing of an absent dir truthfully reports empty; only hallucinated
file *reads* still fail loud). Dispatch stays on capability, not name.
- Stage-agnostic rejection-loop breaker in the tool loop: after 3 rounds
where every tool call is rejected (BLOCKED/ERROR) with no success,
force the model to produce its output. Covers JSON-emitting stages the
read-loop breaker (file_written-only) never protected.
kami
a8c496e909