Rewrite documentation for clarity and impact

[quynhtrang0309]

Rewrote README.md, API_DOCUMENTATION.md, and AI_CONTEXT.md to focus on the "Hook-First" philosophy, simplify usage, and highlight key features like "Zero Boilerplate" and "Auto Lifecycle".

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PR created automatically by Jules for task 10228179312642800564 started by @quynhtrang0309

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