docs: update lessons learned report to v2

docs: add session storage analysis report

docs: add skills & plugin system analysis report

docs: add context building analysis report

docs: add deep-dive report for Bridge/IDE Integration

docs: add deep-dive report for Permission System

docs: add deep-dive report for Tool System

docs: add lessons learned report from source code analysis

docs: add deep-dive report for Multi-agent Coordinator

docs: add deep-dive report for QueryEngine

docs: add codemap and deep-dive reports for memory system and service layer

docs: Translated README to Vietnamese & Added CODEMAP

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