fix: add audit logging to GET /admin/sensitive-keys

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

cameleer3-server-app/src/main/java/com/cameleer3/server/app/controller/SensitiveKeysAdminController.java

@@ -72,7 +72,9 @@ public class SensitiveKeysAdminController {
 
     @GetMapping
     @Operation(summary = "Get global sensitive keys configuration")
-    public ResponseEntity<SensitiveKeysConfig> getSensitiveKeys() {
+    public ResponseEntity<SensitiveKeysConfig> getSensitiveKeys(HttpServletRequest httpRequest) {
+        auditService.log("view_sensitive_keys", AuditCategory.CONFIG, "sensitive_keys",
+                null, AuditResult.SUCCESS, httpRequest);
         return sensitiveKeysRepository.find()
                 .map(ResponseEntity::ok)
                 .orElse(ResponseEntity.noContent().build());