docs(agents): restructure site docs and remove workflow references

[zrosenbauer]

Summary

• Restructure documentation site layout
• Remove workflow references, replace with flow-agent terminology
• Add top-level docs (architecture, introduction, principles, quick-start)

Test plan

• Verify docs site builds correctly
• Check all internal links resolve

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Latest commit: 12dbbde

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Project	Deployment	Actions	Updated (UTC)
funkai	Ready	Preview, Comment	Mar 18, 2026 10:22pm