chore: bump version to 0.3.1

- Update package.json version
- Update artifacthub-pkg.yml version and archive URL
- Add PROJECT_ASSESSMENT.md for tracking improvements
- Add deployment/ directory with plugin loading fix documentation

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

artifacthub-pkg.yml

@@ -1,4 +1,4 @@
-version: 0.3.0
+version: 0.3.1
 name: headlamp-polaris-plugin
 displayName: Polaris
 createdAt: "2026-02-05T19:00:00Z"
@@ -28,7 +28,7 @@ maintainers:
   - name: cpfarhood
     email: "chris@farhood.org"
 annotations:
-  headlamp/plugin/archive-url: "https://github.com/cpfarhood/headlamp-polaris-plugin/releases/download/v0.3.0/headlamp-polaris-plugin-0.3.0.tar.gz"
+  headlamp/plugin/archive-url: "https://github.com/cpfarhood/headlamp-polaris-plugin/releases/download/v0.3.1/headlamp-polaris-plugin-0.3.1.tar.gz"
   headlamp/plugin/version-compat: ">=0.26"
   headlamp/plugin/archive-checksum: sha256:fbe29c07478f28433f5859f452880929717f5ee1d5baebe7e9dbd8880ba483d1
   headlamp/plugin/distro-compat: in-cluster