fix: use official Headlamp API instead of internal paths

The plugin was importing from internal Headlamp paths like
'@kinvolk/headlamp-plugin/lib/lib/k8s/cluster' instead of using the
official public API '@kinvolk/headlamp-plugin/lib'.

This caused the plugin to fail loading in the browser with:
"TypeError: undefined is not an object (evaluating 'Ot.KubeObject')"

Changes:
- Updated imports to use K8s.cluster and ApiProxy from main export
- Added vite.config.js with custom globals (now obsolete with this fix)
- Moved node-forge to dependencies for proper bundling

The plugin now uses only the official documented Headlamp plugin API.

Fixes: #[issue number if exists]

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

headlamp-sealed-secrets/package-lock.json

@@ -8,11 +8,13 @@
       "name": "headlamp-sealed-secrets",
       "version": "0.2.5",
       "license": "Apache-2.0",
+      "dependencies": {
+        "node-forge": "^1.3.1"
+      },
       "devDependencies": {
         "@iconify/react": "^6.0.2",
         "@kinvolk/headlamp-plugin": "^0.13.0",
         "@types/node-forge": "^1.3.11",
-        "node-forge": "^1.3.1",
         "typedoc": "^0.28.16",
         "typedoc-plugin-markdown": "^4.10.0"
       }
@@ -12397,7 +12399,6 @@
       "version": "1.3.3",
       "resolved": "https://registry.npmjs.org/node-forge/-/node-forge-1.3.3.tgz",
       "integrity": "sha512-rLvcdSyRCyouf6jcOIPe/BgwG/d7hKjzMKOas33/pHEr6gbq18IK9zV7DiPvzsz0oBJPme6qr6H6kGZuI9/DZg==",
-      "dev": true,
       "license": "(BSD-3-Clause OR GPL-2.0)",
       "engines": {
         "node": ">= 6.13.0"