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* Add watch-based feedback with dynamic informer lifecycle management Implements dynamic informer registration and cleanup for resources configured with watch-based status feedback (FeedbackScrapeType=Watch). This enables real-time status updates for watched resources while efficiently managing resource lifecycle. Features: - Automatically register informers for resources with FeedbackWatchType - Skip informer registration for FeedbackPollType or when not configured - Clean up informers when resources are removed from manifestwork - Clean up informers during applied manifestwork finalization - Clean up informers when feedback type changes from watch to poll Implementation: - Refactored ObjectReader to interface for better modularity - Added UnRegisterInformerFromAppliedManifestWork helper for bulk cleanup - Enhanced AvailableStatusController to conditionally register informers - Updated finalization controllers to unregister informers on cleanup - Added nil safety checks to prevent panics during cleanup Testing: - Unit tests for informer registration based on feedback type - Unit tests for bulk unregistration and nil safety - Integration test for end-to-end watch-based feedback workflow - Integration test for informer cleanup on manifestwork deletion - All existing tests updated and passing This feature improves performance by using watch-based updates for real-time status feedback while maintaining efficient resource cleanup. Signed-off-by: Jian Qiu <jqiu@redhat.com> * Fallback to get from client when informer is not synced Signed-off-by: Jian Qiu <jqiu@redhat.com> --------- Signed-off-by: Jian Qiu <jqiu@redhat.com>