On Celld 0.6.0, a Durable Object facet created from a class in `ctx.exports` with an ID from `idFromName()` starts correctly. Inside the facet, however, `ctx.id.name` is `undefined`.

The Cloudflare Agents SDK 0.24 requires this name, so `subAgent()` and `agentTool()` in Agents and `@cloudflare/think` fail on Celld. The same code works on workerd.

### Versions

- **Celld:** v0.6.0, two nodes, fleet durability, S3-compatible bucket (SeaweedFS) - **agents:** 0.24.0 - **@cloudflare/think:** 0.19.0 - **Works on:** workerd via Wrangler local dev

### Reproduction

A parent Durable Object (an Agents Agent or Think agent) starts a child facet the way `subAgent()` does. The child class comes from `this.ctx.exports.<ChildClass>`, and the ID comes from `idFromName("<child-name>")`.

```js // Parent DO. Adjust to the exact facets call Agents 0.24 makes. const facet = this.ctx.facets.get("child", () => ({ class: this.ctx.exports.Child, id: this.ctx.exports.Child.idFromName("child"), // or the namespace's idFromName }));

await facet.fetch("https://facet/ping"); ```

In the child facet:

```js export class Child extends DurableObject { fetch() { return new Response(String(this.ctx.id.name)); } } ```

The child is exported from the Worker entry point, but has no binding or migration of its own, as with Agents sub-agents.