Added three new documents with nine Mermaid diagrams to make the strangler
fig strategy visible:
- README: container topology diagram at the start, with the proxy entry point
and three seams labelled
- docs/architecture.md: five diagrams tracing the exact implementation:
- The four seams and who holds authority at each boundary
- How by-id read goes through the resolver, but list-read bypasses it
- Case lifecycle state machine (the strategy in one picture)
- Take-ownership sequence with failure windows annotated
- Write-through error round-trip showing zero validation logic crossed
- docs/playbook.md: how to apply this to a production system:
- Write-path decision tree (five read/write patterns)
- Cutover ordering diagram (side-effects-free first, least recoverable last)
- Seven transferable rules with pointers to the files that demonstrate them
- Scope diagram of what's proven vs. left as your decisions
Resolved all 13 dangling § citations (to an absent spec doc) by linking to
the actual files or dropping them. Replaced portal-frontend/README.md
boilerplate with accurate content. All diagrams parse and link-check clean.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
