research: reconstruct Eldorado organization with sourced roles and explicit assumptions

docs/contribution/diagrams.md

@@ -9,13 +9,13 @@ description: Author typed JSON diagrams and embed their local interactive viewer
 
 | Diagram type | Intended use |
 | --- | --- |
-| Architecture | Components, boundaries and relationships; also suitable for this illustrative structure test |
+| Architecture | Components, boundaries and relationships; also used for the evidence-labeled organization views |
 | Workflow | Processes, branches and approval gates |
 | Sequence | Participants and ordered messages |
 | Dataflow | Sources, processing and destinations |
 | Lifecycle | States and transitions |
 
-The standalone viewer provides pan/zoom, node inspection, search/focus, relationship tracing, light/dark themes, and an export menu. Motion is opt-in. The Organization example exercises architecture mode; other diagram types use the same build interface but do not yet have portal-specific examples. Browser-dependent exports such as video are not acceptance-tested by this integration.
+The standalone viewer provides pan/zoom, node inspection, search/focus, relationship tracing, light/dark themes, and an export menu. Motion is opt-in. The Organization views exercise architecture mode; other diagram types use the same build interface but do not yet have portal-specific examples. Browser-dependent exports such as video are not acceptance-tested by this integration.
 
 ## Author a diagram
 
@@ -34,7 +34,7 @@ pnpm build
 ```mdx
 import ArchifyDiagram from '@site/src/components/ArchifyDiagram';
 
-<ArchifyDiagram name="organization-structure" title="Illustrative organization structure" />
+<ArchifyDiagram name="organization-structure" title="Eldorado organization — evidence and assumptions" />
 ```
 
 Supply a text alternative below each diagram. The wrapper uses a local, base-path-aware iframe with a descriptive title, scripts and downloads enabled, and no same-origin or parent-navigation permissions. The Open full viewer button expands the diagram in a full-screen modal on the current page, with the same iframe sandbox. Close it with the Close button or Escape; focus returns to the opener. It does not open a new tab. The separate standalone HTML asset remains directly addressable and is not itself iframe-sandboxed, so publish only reviewed, trusted diagrams. Generated output is ignored by Git and rebuilt in CI.