release: v0.2.3 - replace Material-UI icons with Iconify

Replace all Material-UI icon imports with Iconify equivalents to fix plugin loading.
Headlamp provides @iconify/react as a global, not @mui/icons-material.

Icon mappings:
- ErrorOutline → mdi:alert-circle-outline
- ContentCopy → mdi:content-copy
- Visibility → mdi:eye
- VisibilityOff → mdi:eye-off
- CheckCircle → mdi:check-circle
- Error → mdi:alert-circle
- Warning → mdi:alert
- Add → mdi:plus
- Delete → mdi:delete

Also fixed test-setup.ts lint errors (unused parameters).

Tarball checksum: SHA256:5eb6273488fdf337486311c289f8db3aa5f2505ddbe5b9dd5b8c74b1e15f0032

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/artifacthub-pkg.yml

@@ -1,13 +1,13 @@
 # Artifact Hub package metadata file
 # https://github.com/artifacthub/hub/blob/master/docs/metadata/artifacthub-pkg.yml
-version: 0.2.0
+version: 0.2.3
 name: headlamp-sealed-secrets
 displayName: Sealed Secrets Plugin for Headlamp
-createdAt: "2026-02-11T00:00:00Z"
+createdAt: "2026-02-12T00:00:00Z"
 description: A comprehensive Headlamp plugin for managing Bitnami Sealed Secrets with client-side encryption and RBAC-aware UI
 license: Apache-2.0
 homeURL: https://github.com/privilegedescalation/headlamp-sealed-secrets-plugin
-appVersion: 0.2.0
+appVersion: 0.2.3
 containersImages:
   - name: sealed-secrets-controller
     image: docker.io/bitnami/sealed-secrets-controller:v0.24.0
@@ -19,8 +19,8 @@ keywords:
   - encryption
   - security
 annotations:
-  headlamp/plugin/archive-url: "https://github.com/privilegedescalation/headlamp-sealed-secrets-plugin/releases/download/v0.2.0/headlamp-sealed-secrets-0.2.0.tar.gz"
-  headlamp/plugin/archive-checksum: "SHA256:55a1a387d65a8d92545033670d07dedd77a72fd228125331ab93136f8ac87f1c"
+  headlamp/plugin/archive-url: "https://github.com/privilegedescalation/headlamp-sealed-secrets-plugin/releases/download/v0.2.3/headlamp-sealed-secrets-0.2.3.tar.gz"
+  headlamp/plugin/archive-checksum: "SHA256:5eb6273488fdf337486311c289f8db3aa5f2505ddbe5b9dd5b8c74b1e15f0032"
   headlamp/plugin/version-compat: ">=0.13.0"
   headlamp/plugin/distro-compat: "desktop,in-cluster,web,docker-desktop"
 links:

headlamp-sealed-secrets/src/components/DecryptDialog.tsx

@@ -5,8 +5,8 @@
  * Kubernetes Secret (requires RBAC permissions to read secrets)
  */
 
-import { K8s } from '@kinvolk/headlamp-plugin/lib';
 import { Icon } from '@iconify/react';
+import { K8s } from '@kinvolk/headlamp-plugin/lib';
 import {
   Box,
   Button,

headlamp-sealed-secrets/src/components/EncryptDialog.tsx

@@ -5,8 +5,8 @@
  * client-side using the controller's public certificate
  */
 
-import { K8s } from '@kinvolk/headlamp-plugin/lib';
 import { Icon } from '@iconify/react';
+import { K8s } from '@kinvolk/headlamp-plugin/lib';
 import {
   Box,
   Button,

headlamp-sealed-secrets/src/test-setup.ts

@@ -8,13 +8,13 @@ import { beforeAll } from 'vitest';
 
 // Mock localStorage for tests
 const localStorageMock = {
-  getItem: (key: string) => {
+  getItem: () => {
     return null;
   },
-  setItem: (key: string, value: string) => {
+  setItem: () => {
     //noop
   },
-  removeItem: (key: string) => {
+  removeItem: () => {
     // noop
   },
   clear: () => {