diff --git a/test/skill-e2e-plan.test.ts b/test/skill-e2e-plan.test.ts
index a1aac4f45..7b2badde2 100644
--- a/test/skill-e2e-plan.test.ts
+++ b/test/skill-e2e-plan.test.ts
@@ -81,7 +81,10 @@ Write your complete review directly to ${planDir}/review-output.md
 Focus on reviewing the plan content: architecture, error handling, security, and performance.`,
       workingDirectory: planDir,
       maxTurns: 15,
-      timeout: 360_000,
+      // 540s: the evidence-before-claimed-limitations directive and the
+      // design-doc discovery block (fork port wave 2) add real probing turns;
+      // main cleared this at 243s, the enriched skill needs more headroom.
+      timeout: 540_000,
       testName: 'plan-ceo-review',
       runId,
       model: 'claude-opus-4-7',
@@ -100,7 +103,7 @@ Focus on reviewing the plan content: architecture, error handling, security, and
       const review = fs.readFileSync(reviewPath, 'utf-8');
       expect(review.length).toBeGreaterThan(200);
     }
-  }, 420_000);
+  }, 660_000);
 });
 
 // --- Plan CEO Review (SELECTIVE EXPANSION) E2E ---
@@ -168,7 +171,7 @@ Write your complete review directly to ${planDir}/review-output-selective.md
 Focus on reviewing the plan content: architecture, error handling, security, and performance.`,
       workingDirectory: planDir,
       maxTurns: 15,
-      timeout: 360_000,
+      timeout: 540_000,
       testName: 'plan-ceo-review-selective',
       runId,
       model: 'claude-opus-4-7',
@@ -185,7 +188,7 @@ Focus on reviewing the plan content: architecture, error handling, security, and
       const review = fs.readFileSync(reviewPath, 'utf-8');
       expect(review.length).toBeGreaterThan(200);
     }
-  }, 420_000);
+  }, 660_000);
 });
 
 // --- Plan CEO Review SCOPE EXPANSION energy (V1.1 mode-posture regression gate) ---