diff --git a/.codex/skills/genarrative-external-editor-api/SKILL.md b/.codex/skills/genarrative-external-editor-api/SKILL.md
index 7263c5f81..be69ad12b 100644
--- a/.codex/skills/genarrative-external-editor-api/SKILL.md
+++ b/.codex/skills/genarrative-external-editor-api/SKILL.md
@@ -115,7 +115,7 @@ python3 .codex/skills/genarrative-external-editor-api/scripts/genarrative_extern
 
 ## Request Patterns
 
-For image and icon generation, the request-body top-level `style` field both appends a server-side pixel-art clause to the prompt sent to the provider and enables deterministic post-processing. It is distinct from `generationInputs.artSpec.style`, which is stored metadata describing the requested visual language. Pass `style="pixelArt"` in Python or `"style": "pixelArt"` in JSON to enable both on supported generation types; use `"none"` or omit the field otherwise, in which case the submitted prompt is byte-for-byte what you sent. Verify compatibility and fallback semantics in `references/api-selection.md`.
+For image and icon generation, the request-body top-level `style` field both appends a server-side pixel-art clause to the prompt sent to the provider and enables deterministic post-processing. It is distinct from `generationInputs.artSpec.style`, which is stored metadata describing the requested visual language. Pass `style="pixelArt"` in Python or `"style": "pixelArt"` in JSON to enable both on supported generation types; use `"none"` or omit the field otherwise, in which case the submitted prompt is identical to what the same request would send with the field omitted. That is not the same as passing your text through untouched — see `references/api-selection.md`, which also covers compatibility and fallback semantics.
 
 For Python callers, prefer:
 
diff --git a/.codex/skills/genarrative-external-editor-api/references/api-selection.md b/.codex/skills/genarrative-external-editor-api/references/api-selection.md
index b29044ae4..a895da28e 100644
--- a/.codex/skills/genarrative-external-editor-api/references/api-selection.md
+++ b/.codex/skills/genarrative-external-editor-api/references/api-selection.md
@@ -88,7 +88,8 @@ Ask a follow-up only when two routes could both be correct and produce different
 
 The request-body top-level `style` field controls both the prompt actually submitted to the provider and deterministic image post-processing. It is separate from `generationInputs.artSpec.style`, which is stored metadata describing the requested visual language.
 
-- Omitted, `null`, an empty string, and `"none"` all disable post-processing without a warning, and leave the submitted prompt byte-for-byte as you sent it.
+- Omitted, `null`, an empty string, and `"none"` all disable post-processing without a warning, and leave the submitted prompt identical to what the same request would send with the field omitted.
+- That guarantee is about this field only, not about passthrough of your text. The server always builds the submitted prompt: ordinary image prompts are trimmed, `kind: "character"` prompts are wrapped in a server-side template that pins the flat key-colour background matting depends on, and icon spritesheet generation has no `prompt` field at all — its prompt is assembled from the trimmed `iconDescriptions`. `style` does not participate in any of that.
 - `"pixelArt"` appends one server-side clause to the end of the submitted prompt and enables deterministic pixel-art snapping, for ordinary image generation (omit `kind`), `kind: "character"`, and icon spritesheet generation. The clause is scoped per path — `画面为像素风格` for ordinary images, `角色主体为像素风格` for characters, and `每个图标素材均为像素风格` for icon spritesheets. Character and icon spritesheet generation are matted against a flat key-colour background afterwards, so their clauses deliberately never demand a whole-canvas pixelation that would fight the flat-background requirement already in those prompts.
 - Unknown strings, or `"pixelArt"` on unsupported image kinds such as `spec`, `quick-edit`, `ui-design`, or `publication-material`, continue without style processing and return `warning.code: "unsupported-image-style"`.
 - A non-string JSON value is malformed and returns HTTP `400`. Keep the field extensible; do not treat the current examples as a closed client-side enum.