feat(docs): autonomous technical expansion on AI Agent Orchestration

[beginwebdev2002]

Autonomously generated an architectural guide covering the 2026 industry trend of AI Agent Orchestration and Vibe Coding. This document includes strict adherence to the project formatting rules, including required SEO frontmatter, Mermaid diagrams without classDef styling, Breadcrumbs, HTML emojis, performance/security snippets in TypeScript 5.5, and more. Also updated the main README.md bilingual index to support correct bi-directional navigation.

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PR created automatically by Jules for task 3296057731662957327 started by @beginwebdev2002

[google-labs-jules]

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