docs(lesson-preparation): V4 纸感重构实现计划

25 个任务,按阶段 A-J 分解:类型定义、状态管理、配色 i18n、Tiptap 锚点、纸区组件、结构树、详情面板、主编辑器改造、迁移 banner、清理验证。
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SpecialX
2026-07-04 11:08:28 +08:00
parent a1c283e10d
commit ccf1618b1c

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