Align shared debug help and completion

docs/roadmap/implementation.md

@@ -223,6 +223,11 @@ capture, selection, application and rename, with visibility still independent.
 
 ## Stage 5 — Present one debug option in help and completion
 
+**Complete.** Completion uses the same effective declarations as parsing and
+help. Canonical and alias help and usage failures expose the combined option;
+focused tests cover local shorts, requiredness, application defaults, choices,
+file and directory hints, boolean validation, and idle application callbacks.
+
 Primary files: [completion_flags.go](../../completion_flags.go),
 [internal/cobra/parse.go](../../internal/cobra/parse.go),
 [internal/commandmeta](../../internal/commandmeta/metadata.go).