Fix getConfigSchema to use flat fields array with correct hint keys

The Paperclip AdapterConfigSchema type expects a flat fields array, not
nested sections. Also maps description -> hint per the schema type.
Defines types locally since @paperclipai/adapter-utils@0.3.1 on npm
does not yet export AdapterConfigSchema/ConfigFieldSchema (those exist
in the monorepo but aren't released to npm yet).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@farhoodliquor/paperclip-adapter-claude-k8s",
-  "version": "0.1.8",
+  "version": "0.1.9",
   "description": "Paperclip adapter plugin that runs Claude Code agents as Kubernetes Jobs",
   "license": "MIT",
   "repository": {