Two fixes that together let the freestyle analyst/architect stages actually
produce valid artifacts on a local model (verified end-to-end: analyst passed
first try, architect produced a validated plan):
1. Tools-less final emission (SessionOrchestrator): producing the artifact
while tools are in the request is unreliable — llama.cpp's Gemma template
switches to a channel format and leaks <|channel> markers into the text, and
models keep tool-calling until the round cap without ever emitting. After the
tool loop, fire ONE tools-less inference to get clean JSON (also re-enables
the JSON grammar, since grammar+tools is rejected). Gated on the artifact not
already being produced via emit_artifact.
2. GBNF grammar handles arrays/objects (GbnfGrammarConverter): array-typed
properties fell through to a 'string' rule, so the grammar forced a string
where the schema demanded an array — an unwinnable grammar-vs-validator
disagreement. Add generic value/object/array rules and map types correctly.
Note: also needs schema 'items' on array props (runtime schemas updated; mirror
to repo schemas/*.json).
kami
c8c2521fa2