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

[beginwebdev2002]

Added a comprehensive architectural guide for AI Agent Orchestration as part of 2026 industry trends.

• Created docs/ai-agent-orchestration-patterns.md with required YAML Frontmatter for AI-agent deterministic parsing.
• Added H1 with Technology + High-Value Action pattern and SEO optimized introductory content.
• Included Mermaid flowchart with classDef/class design tokens and Markdown table.
• Added actionable checklist for 2026 readiness.
• Updated root README.md bi-directional linking to include the new document and prevent orphan files.

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PR created automatically by Jules for task 10078841172119128284 started by @beginwebdev2002

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