Add Effect v4 support, Fast Refresh tooling, and revamped docs (#56)

## Summary

- Add `effect-fc-next`, a React 19 integration targeting Effect v4 beta.
- Introduce component lifecycles, scoped resources, queries, mutations, forms, lenses, views, and refreshable components.
- Add `@effect-view/vite-plugin` for Vite Fast Refresh support.
- Add an Effect v4 example application covering the new APIs.
- Expand test coverage for both the existing and next-generation packages.
- Replace the starter Docusaurus content with complete Effect View documentation while preserving the Effect v3 docs as a versioned snapshot.
- Update the landing page, navigation, package scripts, and build output.
- Extend CI with linting, tests, package builds, Docker builds, and container publishing.

## Validation

- `bun lint:tsc`
- `bun lint:biome`
- `bun test`
- `bun run build`
- `bun pack`
- Docker image build

---------

Co-authored-by: Julien Valverdé <julien.valverde@mailo.com>
Reviewed-on: Thilawyn/effect-fc#56

packages/vite-plugin/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "@effect-view/vite-plugin",
+  "description": "Vite Fast Refresh support for Effect View components",
+  "version": "0.0.1",
+  "type": "module",
+  "files": [
+    "./README.md",
+    "./dist"
+  ],
+  "license": "MIT",
+  "repository": {
+    "url": "git+https://github.com/Thiladev/effect-fc.git"
+  },
+  "types": "./dist/index.d.ts",
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "default": "./dist/index.js"
+    },
+    "./runtime": {
+      "types": "./dist/runtime.d.ts",
+      "default": "./dist/runtime.js"
+    }
+  },
+  "scripts": {
+    "lint:tsc": "tsc -b --noEmit",
+    "lint:biome": "biome lint",
+    "test": "vitest run",
+    "build": "tsc -b tsconfig.build.json",
+    "pack": "npm pack",
+    "clean:cache": "rm -rf .turbo *.tsbuildinfo",
+    "clean:dist": "rm -rf dist",
+    "clean:modules": "rm -rf node_modules"
+  },
+  "dependencies": {
+    "typescript": "^6.0.3"
+  },
+  "devDependencies": {
+    "effect-fc-next": "workspace:*",
+    "vite": "^8.0.16",
+    "vitest": "^3.2.4"
+  },
+  "peerDependencies": {
+    "effect-fc-next": "0.1.0-beta.0",
+    "vite": "^6.0.0 || ^7.0.0 || ^8.0.0"
+  }
+}