angular-knowledge-patch

# Angular Knowledge Patch Use this skill when writing, reviewing, upgrading, or debugging modern Angular applications. Start with the breaking changes and defaults below, then open the topic reference that matches the task. ## Reference index | Reference | Topics | | --- | --- | | [Compatibility, security, and releases](references/compatibility-security-and-releases.md) | Supported Node.js, TypeScript, and RxJS combinations; browser policy; support lifecycle; update hops; CSP and security changes | | [Core reactivity](references/core-reactivity.md) | Resources, effects, runtime bindings, zoneless change detection, services, signals, and core typing changes | | [Signal Forms](references/signal-forms.md) | Field trees, schemas, validation, submission, custom controls, and Material/Aria integration | | [SSR, hydration, and routing](references/ssr-hydration-and-routing.md) | Hybrid rendering, server routes, incremental hydration, pending work, transfer cache, engines, and router lifecycle | | [Templates and animations](references/templates-and-animations.md) | Template syntax, diagnostics, CSS enter/leave animation, defer triggers, and host-directive matching | | [Testing and tooling](references/testing-and-tooling.md) | Vitest, migrations, HMR, compiler checks, CLI tools, build changes, and removed test APIs | | [UI, platform, and DevTools](references/ui-platform-and-devtools.md) | Angular Aria, Material, CDK, locale data, profiling, and debugging visualizations | ## Breakin...