Summary

This PR addresses three critical TODO/FIXME items in the Karmada codebase that were affecting code quality, performance, and developer experience. These fixes eliminate technical debt and improve system reliability.

Problem Statement

The codebase contained several TODO/FIXME items that needed attention:

1. Deprecated FederatedResourceQuota name validation - Security and performance concern
2. Missing override manager validation - Potential for invalid operations
3. Incomplete test infrastructure - Blocking proper testing capabilities

Detailed Changes

1. FederatedResourceQuota Validation Fix

File: pkg/webhook/federatedresourcequota/validating.go

Problem:

• The code contained deprecated name validation that violated Kubernetes best practices
• Using resource names as labels can lead to security vulnerabilities
• Unnecessary validation overhead was impacting performance

2. Override Manager Validation Implementation

File: pkg/util/overridemanager/overridemanager.go

Problem:

• Missing validation to check if overrider instructions can be applied to target resources
• Potential for applying overrides to incompatible resources
• Risk of system crashes or unexpected behavior

3. Unimplemented Test Functions Implementation

File: pkg/karmadactl/util/testing/fake.go

Problem:

• Two critical test functions were marked with TODO and would panic if called
• Incomplete test infrastructure was blocking proper testing
• Potential for CI/CD pipeline failures