Adds OllamaOptionDisableThinking, a composable node chaining into the
same OLLAMA_OPTIONS socket every other OllamaOption* node uses. Unlike
those (Ollama-native sampling params passed through verbatim), the
"think" key it emits is a comfydv-level convention: every LLMProvider
implementation pops it out of options and translates it to its own wire
shape before building a request, since neither backend recognizes a
literal "think" key nested inside a generic options object.
Confirmed live: Ollama's native /api/chat and OpenAI-compatible
/v1/chat/completions both silently ignore "think" nested in options —
it must be a top-level request field, or the model burns its whole
token budget on chain-of-thought reasoning before ever responding
(eval_count: 223 vs 2 in a direct comparison). llama.cpp's translation
(chat_template_kwargs/reasoning_effort) is sourced from llama-server's
documented request-body fields, not live-verified against a running
instance.
This also fixes two existing live integration tests that already passed
options={"think": False} under the mistaken assumption it worked — it
was a silent no-op until now.
See ADR-010 for the full design discussion, including why this ended up
as a composable option node rather than a new ChatCompletion input.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YArD9ZjBWKsAvazmS48amA
