fix(cloudflare-runtime): keep typed error/requirement channels in RemoteWorker dts

[sam-goodwin]

Annotate RemoteWorker.make/layer with explicit types so the generated declarations keep their error/requirement channels.

The dts bundler cannot name the inferred Credentials requirement from @distilled.cloud/cloudflare and degraded both exports — and everything composed from them, e.g. RuntimeServices.layerRuntime — to any, any:

// before (dist/node/RuntimeServices.d.mts)
declare const layerRuntime: (config: RuntimeConfig) => Layer.Layer<..., any, any>;

// after
declare const layerRuntime: (config: RuntimeConfig) => Layer.Layer<
  ...,
  ConfigError | PlatformError | SystemError,
  ChildProcessSpawner | Credentials | FileSystem | HttpClient | Path
>;

Found while embedding this repo as a workspace in the alchemy monorepo, where the any requirement channel failed Effect.runPromise type-checks in cloudflare-vite-plugin's dev-server.ts.

🤖 Generated with Claude Code

[alchemy-version-bot]

Install the packages built from this commit:

@distilled.cloud/cloudflare-rolldown-plugin

bun add https://pkg.distilled.cloud/cloudflare-rolldown-plugin/c09ef1d

@distilled.cloud/cloudflare-runtime

bun add https://pkg.distilled.cloud/cloudflare-runtime/c09ef1d

@distilled.cloud/cloudflare-vite-plugin

bun add https://pkg.distilled.cloud/cloudflare-vite-plugin/c09ef1d