Verify public alias registration flows

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Application-owned aliases implementation plan
 
-Status: in progress; Stages 1–11 completed.
+Status: in progress; Stages 1–12 completed.
 
 ## Authority, baseline, and scope
 
@@ -591,6 +591,14 @@ coverage.
 Fill missing cross-boundary cases rather than duplicating the private algorithm
 test inventory. No concurrent-dispatch contract is introduced.
 
+**Completed:** External-package tests now exercise command-only and root-group
+consumers using only the core import. They cover declaration ordering, alias
+chains and global flags in one installation batch, canonical operand retention,
+optional/required/repeated operands without installation-time conversion,
+declaration reuse, retained construction errors, later registration, failed
+relationship validation, failed-batch recovery, and refreshed help. The root
+suite passes with `go test ./... -count=1`.
+
 ## Stage 13: Verify typed bindings and integration composition
 
 **Work**