[mforce]

Refs #1116 (no issue closes).

Two rows in the code-layers table of docs/architecture.md were out of date after #1104 and #1116.

• Domain. The old row said Contracts/ holds contract enums. The Domain Contracts/ folders now also hold value types (DiscountCeiling, CurrencyInfo) and static rules and constants (Roles, FarmCode, FarmImageErrors, CurrencyCatalog, SeedDefaults). The new row names three of them as examples.
• Analyzers. The old row said the analyzer reports undeclared module edges. It now fails the build on an undeclared edge (CW1001) and on code that names another module's type outside its contract (CW1004).

I checked the rest of the file. The feature-module prose ("reach it through its Contracts/, Farm also declares a small seam") is still accurate, and every source path it cites still exists. The diagrams are unchanged.

Guards that read tracked docs pass: CouplingMatrixRealTreeTests and TenancyDocsFreshnessTests (4/4), and the SchemaDocsTests image-pin guards (2/2).