refactor(cli)!: namespace the profile and bundle manifests under dsh.profile and dsh.bundle

A profile manifest and a bundle manifest are different kinds and shared one
flat `dsh` section: `dsh.plugins` listed bundles (not plugins) and `dsh.patch`
declared a bundle's layer. Each kind now names its role — a bundle declares
`dsh.bundle.patch`, a profile declares `dsh.profile.bundles` — so a
package.json states which role it plays and the list name matches its contents.

`DEFAULT_PROFILE_PLUGINS` becomes `DEFAULT_PROFILE_BUNDLES`, and
`DshManifestSection` splits into `DshBundleManifest`/`DshProfileManifest`.
Pre-release: no compatibility shim; turtle-ui moved with it (bd5ff10).

apps/cli/reference/README.i18n.yaml

@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write apps/cli/reference/README.md
-README.md: 25c74bc6020aec409381796e129873bbdc937436
-README.zh.md: fd29f8f6a29d5858e6c9b6b66e21d5b92733480c
+README.md: 62275139809364d80296433e804ade3d447f37e6
+README.zh.md: e508caaf05622c0c177eaacd070978368ff84af3