fix: register AppBarClusterBadge, fix CSI label mismatch, improve accessibility and theme support

- Register AppBarClusterBadge via registerAppBarAction (was dead code)
- Add Rook 1.12+ CSI pod labels to CephPodDetailSection alongside legacy labels
- Add sidebar entries for Storage Classes and Volumes pages
- Add role="dialog", aria-modal, aria-labelledby, and Escape key to all detail drawers
- Replace hardcoded hex colors with CSS custom properties for dark/light theme compat
- Remove duplicate parseStorageToBytes from OverviewPage (import from k8s.ts)
- Add endpoints field to CephObjectStoreStatus interface (remove unsafe cast)
- Use ROOK_CEPH_API_GROUP/VERSION constants in API URL construction
- Hoist extractJsonData to module level
- Remove dead extractPoolFromVolumeHandle function
- Fix redundant storageClasses.length guard in OverviewPage
- Fix lint indent warnings
- Update CLAUDE.md and CHANGELOG.md

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

src/api/k8s.ts

@@ -209,10 +209,16 @@ export interface CephObjectStoreSpec {
   gateway?: { port?: number; securePort?: number; instances?: number };
 }
 
+export interface CephObjectStoreEndpoints {
+  insecure?: string[];
+  secure?: string[];
+}
+
 export interface CephObjectStoreStatus {
   phase?: string;
   conditions?: CephClusterCondition[];
   info?: Record<string, string>;
+  endpoints?: CephObjectStoreEndpoints;
 }
 
 export interface CephObjectStore extends KubeObject {
@@ -463,11 +469,3 @@ export function formatStorageType(type: 'rbd' | 'cephfs' | 'unknown'): string {
       return 'Unknown';
   }
 }
-
-/** Extracts pool/subvolume group name from a Rook-Ceph PV volumeHandle. */
-export function extractPoolFromVolumeHandle(handle: string | undefined): string {
-  if (!handle) return '—';
-  // RBD format: "<csi-vol-id>-<pool>-..." — pool is in volumeAttributes
-  // We rely on volumeAttributes.pool instead; this just provides a fallback.
-  return handle;
-}