Two robustness fixes for LLM-emitted artifact stages (e.g. freestyle analyst/
architect) that were exhausting their retry budget on weak models:
1. emit_artifact meta-tool: stages with an LLM-emitted slot now expose an
emit_artifact tool whose parameters ARE the artifact's JSON schema, giving
the model a structured tool-call channel to produce the artifact instead of
a free-form final message. Sidesteps llama.cpp's grammar+tools
incompatibility (the artifact can't be grammar-constrained while tools are
present). The call's arguments are captured as the artifact content.
2. Actionable retry feedback: validation rejection now surfaces the concrete
error messages (e.g. 'required property summary missing') as the stage
failure reason instead of a bare 'validation failed', so the retry-feedback
entry tells the model what to fix.
kami
e72051a9ea