Fix CI publish failures and add missing config schema fields

- CI publish job failed because it tried to re-publish existing versions
  (npm returns 404 for scoped packages on duplicate version). Added a
  version-exists check before npm publish to skip gracefully.
- Also fixed the auth env var from NPM_TOKEN to NODE_AUTH_TOKEN which
  is what actions/setup-node's registry-url option expects.
- Added missing core and operational fields to getConfigSchema() so the
  Paperclip UI surfaces model, effort, maxTurnsPerRun, skipPermissions,
  instructionsFilePath, timeoutSec, and graceSec alongside existing K8s
  infrastructure fields.
- Bumped version to 0.1.10.

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@farhoodliquor/paperclip-adapter-claude-k8s",
-  "version": "0.1.9",
+  "version": "0.1.10",
   "description": "Paperclip adapter plugin that runs Claude Code agents as Kubernetes Jobs",
   "license": "MIT",
   "repository": {