refactor: apply repository naming contract

Apply the accepted pre-release package, service, type, directory, and role renames as one repository-wide change.

packages/test-support/client-runtime/tsdown.config.ts

@@ -0,0 +1,6 @@
+import { clientLibrary } from '../../client/tsdown.client.ts'
+
+export default clientLibrary(
+  '@deepseek-ai/dsh-client-test-runtime',
+  ['lib/types/index.js', 'lib/types/invariant.js'],
+)