Angular Signals Signals are Angular's reactive primitive for state management. They provide synchronous, fine-grained reactivity. Core Signal APIs signal() - Writable State computed() - Derived State linkedSignal() - Dependent State with Reset effect() - Side Effects Effect rules: - Run in injection context (constructor or with ) - Automatically cleaned up when component destroys Component State Pattern RxJS Interop toSignal() - Observable to Signal toObservable() - Signal to Observable Signal Equality Untracked Reads Service State Pattern For advanced patterns including resource(), see refer…