test(e2e): bound diagnostic brief below runner frame limit

Co-Authored-By: Paperclip <noreply@paperclip.ing>

tests/runner-e2e/README.md

@@ -136,7 +136,7 @@ sandbox rather than waiting for Daytona's idle timeout.
 
 `daytona-journal-continuity` is one explicit-only native Codex cell. Select
 `daytona-journal-continuity.runner-codex.daytona.large-journal-three-turn`.
-It reuses the three-turn warm workflow with a browser-submitted 750 KiB
+It reuses the three-turn warm workflow with a browser-submitted 220 KiB
 synthetic brief and four MiB of bounded command output through the real provider. Before the first browser follow-up,
 a read-only controller journal oracle requires the exact completed run's journal
 to exceed two MiB. Only byte counts enter evidence. No runner state or database

tests/runner-e2e/catalog.ts

@@ -885,7 +885,7 @@ export const daytonaLargeJournalTask: RunnerTaskFixture = {
     warmTurnInstructions(1, nonce),
     "The following synthetic reference sample is task data for the persistence diagnostic. Do not analyze, reproduce, or edit it; follow the instructions above.",
     "BEGIN SYNTHETIC REFERENCE SAMPLE",
-    "x".repeat(750 * 1024),
+    "x".repeat(220 * 1024),
     "END SYNTHETIC REFERENCE SAMPLE",
   ].join("\n"),
 };
@@ -1079,7 +1079,7 @@ export const runnerSuites: readonly RunnerSuiteFixture[] = [
     environments: [daytonaWarmEnvironment],
     tasks: [daytonaLargeJournalTask],
     expectedMatrixSize: 1,
-    definitionMetadata: { version: 2, journalMinimumBytes: 2 * 1024 * 1024, briefBytes: 750 * 1024, outputChunks: 64, scheduling: "explicit-only" },
+    definitionMetadata: { version: 2, journalMinimumBytes: 2 * 1024 * 1024, briefBytes: 220 * 1024, outputChunks: 64, scheduling: "explicit-only" },
   },
 ] as const;