v0.1.1 - notebook authoring style in the skill

Codifies the notebook authoring style in the companion skill. This is the layout these tools were originally used to produce — now written down instead of left to the model's habits.

Added

A new 写法约定（风格） section in skill/notebook-tools/SKILL.md:

• Section commentary belongs in its own markdown cell — never as a # 1. 标题 banner inside a code cell.
• Each section = 1 markdown cell + 1..n code cells. The markdown cell carries ## N. 中文标题 (numbered from 1) plus a sentence or two of prose, and an optional - bullet list.
• The first cell carries # <filename without extension> → one sentence on what the script does → optional ## 使用方法 + ordered list → a single closing ---.
• Callouts use blockquotes: > **注意**: …, > ✅ 已完成 ….
• Multiple code cells in one section share a single markdown header.
• An explicit user request for a different layout still wins.

Changed

• The skill description and whenToUse now list creating/authoring notebooks as a trigger, not only reading and cleaning them.

Full diff: v0.1.0...v0.1.1