Add completion hints to maintained commands

examples/core/README.md

@@ -7,6 +7,8 @@ go run ./examples/core hello --times=0 --tag=first
 go run ./examples/core ws greet --count=2
 go run ./examples/core ws --help
 go run ./examples/core hello --hlep
+go build -o core-example ./examples/core
+./core-example completion bash
 ```
 
 The example installs a canonical `workspace greet` command together with a
@@ -16,6 +18,11 @@ alias. Its declaration slice mixes the canonical group and routing rules as
 `Invocation.CanonicalPath()` so the alternate route and its canonical target
 are visible in the output.
 
+The example also installs `Completion("core-example")` and gives the `report`
+scenario argument static choices. Build it with the basename shown above, load
+the script for your shell using the [CLI reference](../../docs/cli.md#shell-completion),
+and try completing `core-example report d` or `core-example ws gr`.
+
 Integration factories also return `commandkit.Command` and can be passed
 directly to `New` beside `commandkit.Alias` or flag-alias declarations. For a
 command-only `[]commandkit.Command`, convert its elements into a