User reported the model writing a multi-paragraph 'editing plan'
instead of calling edit_image, only firing the tool when explicitly
told to. Two underlying causes:
1. The previous system prompt was conversational ('ALWAYS / NEVER'
lists with discussion) — Qwen-style models read that as topics
to think about rather than rules to obey. Replaced with terse,
imperative dispatcher framing: 'You do not respond in prose.
Every user message MUST result in exactly one tool call.'
2. Qwen 3.x ships with thinking mode on by default. Reasoning
models almost universally degrade native function calling — they
plan how to use a tool instead of just calling it. Prepended
/no_think (Qwen 3.x recognises this token and skips reasoning).
No-op for non-Qwen-3 base models.
Removed the long after-action paragraph that encouraged elaborate
follow-ups; replaced with 'at most one short sentence'.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
57_WolveandClaude Opus 4.7
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