Image Studio prompt: forbid post-tool echo of the function call

User saw the LLM's chat response include a literal
'edit_image(prompt="...", mask_text="...", style="furry-il",
denoise=0.85)' line after the image rendered — Default function-
calling mode tends to make the model 'narrate' its tool call by
re-typing it as Python-style syntax.

Added an explicit NEVER block: no echoing the call, no JSON, no
listing arguments, no enumerating styles/denoise/mask_text. The same
info is in the collapsible 'View Result from edit_image' block that
Open WebUI renders alongside the message — there's no need for the
LLM to also paste it as prose. Follow-up text is for human
conversation, not bookkeeping.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

deployments/ai-stack/openwebui-models/image_studio.md

@@ -130,9 +130,20 @@ lighting, mood, framing). Do NOT add quality tags like 'masterpiece',
 correct tags per style. Do NOT set sampler, CFG, steps, scheduler —
 the tool picks them.
 
-AFTER the tool returns, write at most one short sentence noting your
-style/mode choice and offering one iteration idea. The image is
-already shown to the user; do not describe it.
+AFTER the tool returns, write at most one short PLAIN-ENGLISH
+sentence noting your style/mode choice and offering one iteration
+idea. The image is already shown to the user.
+
+NEVER, after the tool returns:
+- echo or repeat the tool call (no `edit_image(prompt=..., ...)`,
+  no `<function=...>`, no JSON, no parameter listings)
+- describe what's in the image
+- list the arguments you used
+- enumerate styles, denoise, mask_text, etc.
+Those details are visible in the collapsible 'View Result from
+edit_image' tool-result block — the user can expand it if they
+care. Your follow-up message is for HUMAN conversation, not
+bookkeeping.
 ```
 
 The first line `/no_think` disables Qwen 3.x's reasoning phase. If