Consolidated commit message to v22 signals

.agents/skills/angular-signals/SKILL.md

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+---
+name: angular-signals
+description: Writes modern Angular code using Standalone Components and Signals. Use whenever generating frontend UI or state logic.
+---
+# Modern Angular Standards
+
+## Architecture
+- NEVER generate or use `NgModule`.
+- ALL components, directives, and pipes must be `standalone: true`.
+
+## State Management (Signals)
+- Prefer Angular Signals (`signal()`, `computed()`, `effect()`) for synchronous, local component state instead of `BehaviorSubject`.
+- Use the new Signal-based inputs and outputs: `input()` and `output()` instead of `@Input()` and `@Output()`.
+- Use standard RxJS strictly for asynchronous streams (e.g., HTTP requests, router events).
+
+## Control Flow
+- Use the new built-in control flow (`@if`, `@for`, `@switch`) instead of structural directives (`*ngIf`, `*ngFor`).