docs: add v3 blog post

Author: nartc

apps/astro-docs/src/content/docs/blog/v3.mdx

@@ -0,0 +1,71 @@
+---
+title: Angular Three v3
+excerpt: Angular Three v3
+date: 2025-01-04
+authors:
+  - chau
+tags:
+  - angular
+  - three
+  - release
+featured: true
+---
+
+Angular Three v3 is here with Angular 19 support! 🎉
+
+## What's in Angular Three v3
+
+- Angular 19 support 🚀
+- Stable Testing API 🧪
+- Routed scenes support is back 🧭
+- Deprecation removals 🗑️
+
+### Angular 19 support
+
+Angular Three v3 drops support for Angular 18 and below. This is because Angular 19 comes with a huge change
+to the Effect API (Learn more [here](https://riegler.fr/blog/2024-10-15-effect-context/)). While nothing really changes much to consumers,
+the way Angular Three utilizes the Effect API changes.
+
+From the library perspective, this update also allows for Angular Three components to go `standalone` by default.
+
+### Stable Testing API
+
+Angular Three Testing API (`angular-three/testing`) has been graduated from Developer Preview. Nothing changes to the API itself. The Testing API
+has been used to test a lot of Angular Three usages since its experimental phase and we are happy to announce that it is now stable.
+
+### Routed scenes support
+
+Due to [a fix in Angular Router](https://github.com/angular/angular/commit/3839cfbb18fcc70cae5a6ba4ba7676b1c4acf7a0), Angular Three has been _soft deprecating_ the Routed Scene use-case.
+However, the support is back in v3 with a solution.
+
+Angular Three implements a custom `RouterOutlet`, `NgtRouterOutlet`, for routed scenes. All it does is to make sure the outlet can provide
+the `NgtRendererFactory` when it activates the routed components. This _might_ seem like a workaround to some folks but we believe that it should work correctly
+for most use-cases. If you run into any problem at all, please file an issue on [Github](https://github.com/angular-threejs/angular-three).
+
+Check out the [Routed Scene](/core/advanced/routed-scene) documentation for more information.
+
+### Deprecation removals
+
+#### `NgtObjectEventsHostDirective`
+
+Short-hand host directive for `NgtObjectEvents` has been removed.
+
+```ts
+// instead of
+hostDirectives: [NgtObjectEventsHostDirective],
+
+// use
+hostDirectives: [{directive: NgtObjectEvents, inputs: [/* explicit inputs */], outputs: [/* explicit outputs */]}],
+```
+
+#### `NgtsPivotControls` from `angular-three-soba/controls`
+
+The export `NgtsPivotControls` has been removed from `angular-three-soba/controls`. Update your import to `angular-three-soba/gizmos`
+
+#### `erp` input in `NgtrPhysics`
+
+`erp` input in `NgtrPhysics` has been removed as it's been a no-op for a while.
+
+## Conclusion
+
+This is a small major release to make sure Angular Three is not holding you back from Angular 19. Thank you. Happy coding!