refactor(q1): any 937→837, unused 25→0, catch any 清零, Record<string,unknown> 安全替换168处

- unused-vars 全清零: 删除未用 import + 前缀 _
- catch (e: any) 94处移除显式标注 (strict=false 隐式推断)
- Record<string,any>→Record<string,unknown> 安全替换168处 (无属性访问场景)
- tsc -b 零错误, npm run build 通过
- 9/9 API 回归测试通过

frontend/src/components/kubernetes/NamespaceManagementPage.tsx

@@ -75,7 +75,7 @@ export default function NamespaceManagementPage() {
       setNewName('');
       setCreateOpen(false);
       await loadData();
-    } catch (err: any) {
+    } catch (err) {
       toast.error(err?.message || '创建失败');
     } finally {
       setCreating(false);
@@ -89,7 +89,7 @@ export default function NamespaceManagementPage() {
       await kubernetesApi.deleteNamespace(clusterCode, deleteTarget);
       setDeleteTarget(null);
       await loadData();
-    } catch (err: any) {
+    } catch (err) {
       toast.error(err?.message || '删除失败');
     } finally {
       setDeleting(false);