fix(code-runtime): support SEA startup and immediate control writes

packages/code-runtime/code-runtime-node/tests/runtime.spec.ts

@@ -100,6 +100,13 @@ describe('Node program process', () => {
     expect((await run({ program, bindings: [] })).error?.kind).toBe('timeout')
   })
 
+  it('retains console output emitted immediately before a non-yielding program', async () => {
+    const { run } = await setup({ timeoutMs: 1000, graceMs: 50 })
+    const result = await run({ program: 'console.log("before hot loop"); for (;;) {}', bindings: [] })
+    expect(result.error?.kind).toBe('timeout')
+    expect(result.logs).toEqual(['before hot loop'])
+  })
+
   it('does not pause the deadline while a binding is pending', async () => {
     const { run } = await setup({ timeoutMs: 1000, graceMs: 50 })
     const result = await run({ program: 'void tools.wait({}); for (;;) {}', bindings: bindings({ wait: () => new Promise(() => {}) }) })