Add generated help and version commands

docs/roadmap/implementation.md

@@ -1,6 +1,6 @@
 # Initial CommandKit implementation plan
 
-Status: implementation underway; Stages 1-5 complete and Stages 6-14 pending.
+Status: implementation underway; Stages 1-6 complete and Stages 7-14 pending.
 
 Date: 2026-10-07.
 
@@ -401,7 +401,7 @@ will set `ReportIncomplete` when introduced with the standard reports.
 
 ## Stage 6: complete help and version
 
-**Status:** pending. **Prerequisite:** Stage 5.
+**Status:** complete. **Prerequisite:** Stage 5.
 
 1. Complete automatically installed `help` and `version`. Root bare invocation,
    `help [COMMAND…]`, root/selected `--help`/`-h`, and non-runnable groups render
@@ -439,6 +439,13 @@ help stream failure is operational; default version contains only app identity;
 controlled build info covers tagged/development/replacement component selection.
 Create/update the substantive help/version portion of `docs/cli.md` now.
 
+**Completion evidence:** external tests cover root, group, runnable-parent, and
+exact-path help; help without required inputs; version text/YAML and invalid
+selectors; and checked report-write failures. Pure build-info tests cover main,
+dependency, tagged replacement, local replacement, development, and missing
+module cases. `go test ./...` passes; README and CLI reference describe the
+implemented boundary.
+
 ## Stage 7: implement configuration suites, scopes, and selector preflight
 
 **Status:** pending. **Prerequisite:** Stage 6.