Your agent can now debug Workers with local tracing

Introduces automatic OpenTelemetry tracing for local Cloudflare Workers development when using `wrangler dev` or `vite dev` in an agent session. Agents can now automatically discover and query these traces and correlated logs via the Local Explorer API to debug issues, inspect local binding state (KV, R2, D1, Durable Objects, Workflows), and verify fixes without deploying code. This leverages the existing workerd instrumentation and Miniflare's local trace store.