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

packages/effect-fc/package.json

@@ -1,7 +1,7 @@
 {
   "name": "effect-fc",
   "description": "Write React function components with Effect",
-  "version": "0.3.0",
+  "version": "0.3.1",
   "type": "module",
   "files": [
     "./README.md",
@@ -9,7 +9,7 @@
   ],
   "license": "MIT",
   "repository": {
-    "url": "git+https://github.com/Thiladev/effect-fc.git"
+    "url": "git+https://github.com/Thiladev/effect-view.git"
   },
   "types": "./dist/index.d.ts",
   "exports": {
@@ -50,6 +50,6 @@
     "react": "^19.2.0"
   },
   "dependencies": {
-    "effect-lens": "^0.2.0"
+    "effect-lens": "^0.2.3"
   }
 }