The website, README, and Smart Heartbeat interface used promotional superlatives, generic benefit labels, and personified growth language that obscured the actual product behavior. The English README is now the repository entry point with a separate Chinese version, and both website and in-app copy describe concrete capabilities, reports, suggestions, and execution boundaries.
Release note: 优化官网、README 与智能心跳界面的中英文文案，去除空泛宣传和拟人化表达，改为直接说明产品能力、运行记录与建议内容。
Define repository and feature-scoped documentation rules for PRDs, User Stories, logic, UI, technical design, and progress evidence.
Move feature-owned documents under docs/features, add one entry point per feature, remove the redundant docs index, and update all affected cross-references. Expand the local tool environment design with explicit product, story, logic, UI, technical, and progress documents.
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