test: gate online recovery completion

Author: vitry

tests/integration/companion.test.mjs

@@ -1821,7 +1821,8 @@ test('snapshot read rejection degrades once to lifecycle-only and preserves auth
 test('later accepted online recovery stops snapshot reads and discards a delayed old result', async () => {
   const context = await fixture();
   const scenario = await deterministicConversationScenario(context, 'initial-only', {
-    heartbeat: true, env: { FAKE_ZCODE_SESSION_PROGRESS_RECOVERY: '1', FAKE_ZCODE_WAIT_FOR_PROGRESS_READ: '1' },
+    heartbeat: true, completionAfterProgressLine: '[zcode] ZCode turn started.\n',
+    env: { FAKE_ZCODE_SESSION_PROGRESS_RECOVERY: '1', FAKE_ZCODE_WAIT_FOR_PROGRESS_READ: '1' },
   });
   const visible = `${scenario.lines.join('')}${renderOutput(scenario.output, { json: true })}${JSON.stringify(scenario.status)}`;
   assert.equal(scenario.stored.progressProbe.state, 'online'); assert.equal(scenario.stored.progressProbe.acceptedOnline, 1);