feat: RBAC checks, ./cli export, adapter-utils range, models.ts

- Add secrets (create/delete/get) and persistentvolumeclaims (get) RBAC checks to testEnvironment
- Add ./cli export and picocolors dependency to package.json
- Change @paperclipai/adapter-utils peer dep to >= range
- Add src/server/models.ts with listK8sModels() returning OpenCode provider-prefixed model IDs
- Wire listModels into ServerAdapterModule (replaces static undefined models field)

Co-Authored-By: Paperclip <noreply@paperclip.ing>

src/index.ts

@@ -1,8 +1,6 @@
 export const type = "opencode_k8s";
 export const label = "OpenCode (Kubernetes)";
 
-export const models: undefined = undefined;
-
 import type { CLIAdapterModule } from "@paperclipai/adapter-utils";
 import { formatEvent } from "./cli/format-event.js";