feat: comprehensive Polaris integration enhancements

Major new features:
- App bar score badge showing cluster Polaris score
- Inline audit results in Deployment/StatefulSet/DaemonSet/Job/CronJob detail views
- Exemption management UI with annotation PATCH support
- Top issues table on overview dashboard
- Audit time display and manual refresh button
- Connection test button in settings
- Check ID to human-readable name mapping
- Enhanced error messages with context

Technical improvements:
- Added triggerRefresh to PolarisDataContext for manual refresh
- Created checkMapping.ts for check metadata
- Created topIssues.ts for extracting common failures
- Enhanced DashboardView with top issues and refresh
- Enhanced PolarisSettings with connection test
- Created InlineAuditSection for details view integration
- Created AppBarScoreBadge for app bar integration
- Created ExemptionManager for annotation patches

UI enhancements:
- 1000px namespace detail panel
- Theme-aware styling throughout
- Improved formatting and layout
- Better status indicators

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>

src/components/AppBarScoreBadge.tsx

@@ -0,0 +1,44 @@
+import { Chip } from '@mui/material';
+import { Shield as ShieldIcon } from '@mui/icons-material';
+import React from 'react';
+import { useHistory } from 'react-router-dom';
+import { usePolarisDataContext } from '../api/PolarisDataContext';
+import { computeScore, countResults } from '../api/polaris';
+
+/**
+ * App bar badge showing cluster Polaris score
+ * Clicking navigates to the overview dashboard
+ */
+export default function AppBarScoreBadge() {
+  const { data, loading } = usePolarisDataContext();
+  const history = useHistory();
+
+  if (loading || !data) {
+    return null; // Graceful degradation when Polaris unavailable
+  }
+
+  const counts = countResults(data);
+  const score = computeScore(counts);
+
+  // Color based on score
+  const getColor = (score: number): 'success' | 'warning' | 'error' => {
+    if (score >= 80) return 'success';
+    if (score >= 50) return 'warning';
+    return 'error';
+  };
+
+  const handleClick = () => {
+    history.push('/polaris');
+  };
+
+  return (
+    <Chip
+      icon={<ShieldIcon />}
+      label={`Polaris: ${score}%`}
+      color={getColor(score)}
+      size="small"
+      onClick={handleClick}
+      style={{ cursor: 'pointer', marginRight: '8px' }}
+    />
+  );
+}