Description

Add a feature that auto-generates human-readable architecture documentation from the registry data. Given a domain or the full registry, it produces a narrative document covering the domain's purpose, key components, data flows, integrations, and technology stack — like having an architect write a design doc from the model.

Acceptance Criteria

• Generate documentation per domain (scoped to one bounded context)
• Generate a full system overview document (cross-domain)
• Output as Markdown (exportable, committable)
• Includes: domain overview, component inventory, data model summary, integration points, technology dependencies
• Diagrams referenced from existing views/ folder where available
• Accessible via chat ("generate docs for Billing domain") or a UI button
• Regeneratable — safe to overwrite when registry changes

Out of Scope

• ADR (Architecture Decision Record) generation — separate feature
• Slide deck generation