fix: restore badge emoji, fix aria-label, and correct service proxy URL

Three root causes for E2E test failures since March 4:

1. Service proxy URL missing http: protocol prefix — Kubernetes requires
   the format http:service-name:port, not service-name:port. This caused
   all data fetches to fail, making data-dependent components render
   empty states instead of expected content.

2. AppBarScoreBadge aria-label "Polaris cluster score: X%" doesn't match
   the E2E test regex /Polaris: \d+%/. Simplified to "Polaris: X%".

3. Shield emoji was removed from badge in commit 514de78 but E2E tests
   still assert its presence.

Fixes PRI-20

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

CLAUDE.md

@@ -4,7 +4,7 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## Project
 
-Headlamp plugin surfacing Fairwinds Polaris audit results. Queries the Polaris dashboard API via Kubernetes service proxy (`/api/v1/namespaces/polaris/services/polaris-dashboard/proxy/results.json`). Read-only — no cluster write operations except exemption annotation patches.
+Headlamp plugin surfacing Fairwinds Polaris audit results. Queries the Polaris dashboard API via Kubernetes service proxy (`/api/v1/namespaces/polaris/services/http:polaris-dashboard:80/proxy/results.json`). Read-only — no cluster write operations except exemption annotation patches.
 
 - **Plugin name**: `polaris`
 - **Target**: Headlamp >= v0.26

src/api/polaris.ts

@@ -218,7 +218,7 @@ const REFRESH_STORAGE_KEY = 'polaris-plugin-refresh-interval';
 const DEFAULT_INTERVAL_SECONDS = 300; // 5 minutes
 
 const URL_STORAGE_KEY = 'polaris-plugin-dashboard-url';
-const DEFAULT_DASHBOARD_URL = '/api/v1/namespaces/polaris/services/polaris-dashboard:80/proxy/';
+const DEFAULT_DASHBOARD_URL = '/api/v1/namespaces/polaris/services/http:polaris-dashboard:80/proxy/';
 
 /**
  * Retrieves the configured refresh interval from localStorage.

src/components/AppBarScoreBadge.test.tsx

@@ -131,6 +131,6 @@ describe('AppBarScoreBadge', () => {
     mockUsePolarisDataContext.mockReturnValue({ data, loading: false });
 
     render(<AppBarScoreBadge />);
-    expect(screen.getByLabelText('Polaris cluster score: 100%')).toBeInTheDocument();
+    expect(screen.getByLabelText('Polaris: 100%')).toBeInTheDocument();
   });
 });

src/components/AppBarScoreBadge.tsx

@@ -54,8 +54,9 @@ export default function AppBarScoreBadge() {
         alignItems: 'center',
         gap: '4px',
       }}
-      aria-label={`Polaris cluster score: ${score}%`}
+      aria-label={`Polaris: ${score}%`}
     >
+      <span>{'\u{1F6E1}\uFE0F'}</span>
       <span>Polaris: {score}%</span>
     </button>
   );

src/components/PolarisSettings.tsx

@@ -105,7 +105,7 @@ export default function PolarisSettings(props: PluginSettingsProps) {
                   type="text"
                   value={currentUrl}
                   onChange={handleUrlChange}
-                  placeholder="/api/v1/namespaces/polaris/services/polaris-dashboard:80/proxy/"
+                  placeholder="/api/v1/namespaces/polaris/services/http:polaris-dashboard:80/proxy/"
                   style={{
                     width: '100%',
                     padding: '4px 8px',
@@ -125,7 +125,7 @@ export default function PolarisSettings(props: PluginSettingsProps) {
                 >
                   Examples:
                   <br />• K8s proxy:{' '}
-                  <code>/api/v1/namespaces/polaris/services/polaris-dashboard:80/proxy/</code>
+                  <code>/api/v1/namespaces/polaris/services/http:polaris-dashboard:80/proxy/</code>
                   <br />• Full URL: <code>https://my-polaris.example.com</code>
                 </div>
               </div>