feat: Allow project-owned vite plugin dep

[justinvdm]

Problem

Currently, RedwoodSDK includes @cloudflare/vite-plugin itself in vite configuration. This make it difficult control which version of this plugin you are on or configure it a specific way.

⚠️ Breaking change

note: This is only a breaking change if you have @cloudflare/vite-plugin as a dependency in your own project.

The new behaviour:

• If the project has @cloudflare/vite-plugin as its own dependency, RedwoodSDK will not instantiate @cloudflare/vite-plugin itself in vite configuration
• If the project does not have @cloudflare/vite-plugin as its own dependency (most likely case), RedwoodSDK will work as normal: will instantiate @cloudflare/vite-plugin itself in vite configuration

Migrating

The recommended approach is now to include @cloudflare/vite-plugin as a dependency in your project's package.json:

{
  ...
  "devDependencies": {
    ...
    "@cloudflare/vite-plugin": "1.7.4",
    "@cloudflare/workers-types": "^4.20250407.0",
    "wrangler": "^4.20.5"
  },
}

... then add the plugin to your vite.config.ts:

import { defineConfig } from "vite";
import { redwood } from "rwsdk/vite";
import { cloudflare } from "@cloudflare/vite-plugin";

export default defineConfig({
  plugins: [
    cloudflare({
      viteEnvironment: { name: "worker" },
    }),
    redwood(),
  ],
});

[justinvdm]

@peterp note this - its a bit unfortunate, I don't think there's much we can do about it. Looks like CF use worker name in wrangler config as default for environment name, but that won't work for us since we need to know the name ahead of time for our configuration.

I mean, we could technically dynamically configure stuff to make that possible, but that feels like a lot, not sure if worth it.

[peterp]

I think it's fine!

[peterp]

I approve these changes!