docs: rebalance prose cleanup and add trimming skill

packages/code-runtime/code-runtime-worker/src/worker.ts

@@ -1,6 +1,6 @@
 /**
- * The worker-thread entrypoint: self-executing glue over `bootstrap.ts`'s {@link
- * runWorkerMain}, kept to the spawn wiring alone.
+ * Spawn-only worker entrypoint over {@link runWorkerMain}. Executable logic stays in
+ * `bootstrap.ts` for in-process coverage; real-worker tests cover this glue.
  * @module @deepseek-ai/dsh-code-runtime-worker/src/worker
  */