Link README to modular reference example

Author: billybox1926-jpg

README.md

@@ -32,6 +32,7 @@ This template is intentionally generic so it can be adopted across teams, produc
   - `docs/REPOSITORY_STANDARDS.md`
   - `docs/ARCHITECTURE.md`
   - `docs/DEVEX.md`
+  - `docs/examples/MODULAR_REFERENCE.md`
 - Modular template structure:
   - `core/`
   - `providers/`
@@ -75,7 +76,7 @@ See `docs/REPOSITORY_STANDARDS.md` for reusable naming and governance convention
 
 ## Architecture conventions
 
-See `docs/ARCHITECTURE.md` for the reusable modular layout, including core/provider/plugin/config/test separation.
+See `docs/ARCHITECTURE.md` for the reusable modular layout, including core/provider/plugin/config/test separation. For a concrete walkthrough, see `docs/examples/MODULAR_REFERENCE.md`.
 
 ## Developer experience
 
@@ -107,6 +108,8 @@ docs/
   ARCHITECTURE.md
   DEVEX.md
   REPOSITORY_STANDARDS.md
+  examples/
+    MODULAR_REFERENCE.md
 scripts/
 tests/
 CHANGELOG.md