[TODO] Create documentation site

[NickCalabs]

Description

Need to create a documentation site (docs site) for the agentd project.

Location

File: README.md
Line: 289

Full Context

The README currently has a commented-out TODO for the documentation section:

<!-- TODO: docs site
## Documentation

→ [Getting Started](https://agentd.sh/docs/getting-started)
→ [Agent YAML Reference](https://agentd.sh/docs/agent-yaml)
→ [CLI Reference](https://agentd.sh/docs/cli)
→ [Python SDK](https://agentd.sh/docs/sdk/python)
→ [TypeScript SDK](https://agentd.sh/docs/sdk/typescript)

The planned documentation structure includes:

• Getting Started guide
• Agent YAML Reference
• CLI Reference
• Python SDK documentation
• TypeScript SDK documentation

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Found by agentd issue-creator