Document application-owned alias contracts

examples/core/README.md

@@ -16,6 +16,15 @@ 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.
 
+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
+`[]commandkit.Declaration` before appending routing rules; Go cannot expand the
+command slice as `...commandkit.Declaration`. The
+[consumer guide](../../docs/consumers/guide.md#application-owned-aliases)
+shows both forms, and the [composed consumer](../../integrations/ckprompt/examples/composed)
+is the maintained integration example.
+
 These aliases use the current local CommandKit source. Published CommandKit
 v0.2.0 does not include alias declarations; consumers can use them after the
 next core release. Repository contributors can run its test with