fix: un second doc_subscribe tuait le premier, et les inbox n'étaient lues qu'à la connexion

packages/polyfill/test/deferred-inbox-processing.test.ts

@@ -434,7 +434,10 @@ test("a drain that fails says so in the package's log, and rejects into nobody",
     console.error = realError;
   }
 
-  const reported = errors.filter((line) => /deferred inbox processing failed/.test(line));
+  // The wording is the SHARED reporter's since 2026-08-17 (`emulated-verifier/inbox-drain.ts`):
+  // the timer is no longer the only thing that drains an inbox — the continuous observation
+  // does too, through the same queue — so the line names the act and not the schedule.
+  const reported = errors.filter((line) => /could not apply what is in this inbox/.test(line));
   expect(reported.length).toBe(1);
   // Prefixed by the CONNECTED identity, like every other polyfill-layer line — which is
   // what makes a drain running under someone else's session legible in a live trace.