Finalize the Effect View rename and refresh docs, examples, and tooling (#59)

## Summary

- Rename `effect-fc-next` to `effect-view` and update package metadata, internal symbols, imports, and repository references.
- Promote the Effect 4 example to `packages/example` and move the legacy Effect 3 example to `packages/effect-fc-example`.
- Add `effect-view` to the npm publishing workflow.
- Update the Vite Fast Refresh plugin for `effect-view` and rename `effectViewPlugin()` to `effectView()`.
- Upgrade Effect, React, TypeScript, build tooling, and related dependencies.
- Refresh the documentation and homepage.

## Documentation

- Add a dedicated Async guide covering:
  - Suspense fallbacks
  - Hook ordering
  - Memoization
  - Structural prop equality
- Clarify synchronous and asynchronous component behavior.
- Document runner scope and service requirements.
- Explain stable construction of Query, Mutation, and Form instances.
- Expand focused Lens and Form examples, including curried focus helpers.
- Document the optional `@effect/platform-browser` dependency for window-focus query refresh.
- Improve the Forms guide structure and examples.
- Fix responsive homepage headline wrapping and update homepage copy.

## Notable API changes

- Package rename:

  ```diff
  - effect-fc-next
  + effect-view

---------

Co-authored-by: Julien Valverdé <julien.valverde@mailo.com>
Reviewed-on: #59

README.md

@@ -1,6 +1,6 @@
 <p align="center">
   <a href="https://thila.dev/effect-view">
-    <img src="packages/docs/static/img/logo.svg" width="104" height="104" alt="Effect View logo" />
+    <img src="https://github.com/Thiladev/effect-view/raw/master/packages/docs/static/img/logo.svg" width="104" height="104" alt="Effect View logo" />
   </a>
 </p>
 
@@ -19,12 +19,12 @@ components, hooks, and JSX.
 
 | Package | Description |
 | --- | --- |
-| [`effect-view`](packages/effect-fc-next) | The Effect View library for Effect v4 and React 19. |
+| [`effect-view`](packages/effect-view) | The Effect View library for Effect v4 and React 19. |
 | [`@effect-view/vite-plugin`](packages/vite-plugin) | Vite Fast Refresh support for Effect View components. |
 | [`docs`](packages/docs) | The [Effect View documentation](https://thila.dev/effect-view), built with Docusaurus. |
-| [`example-next`](packages/example-next) | Example application using Effect View and Effect v4. |
+| [`example`](packages/example) | Example application using Effect View and Effect v4. |
 | [`effect-fc`](packages/effect-fc) | Legacy Effect v3 package. |
-| [`example`](packages/example) | Example application for the legacy package. |
+| [`effect-fc-example`](packages/effect-fc-example) | Example application for the legacy package. |
 
 ## Development
 
@@ -47,7 +47,7 @@ bun run build
 Start the Effect View example or documentation site:
 
 ```bash
-bun run --cwd packages/example-next dev
+bun run --cwd packages/example dev
 bun run --cwd packages/docs start
 ```