test(plan-ceo): bump --disallowedTools test timeout to 10 min

Last 5 runs showed the model under --disallowedTools spending the full
5-min budget in 'high effort thinking' before surfacing options. The LLM
judge correctly reports state=working at every 30s tick, so the
high-water-mark fallback never fires.

10-min budget gives the model 20 judge windows to eventually surface
the question. Outer bun timeout bumped accordingly to 660s (inner +60s).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

test/skill-e2e-plan-ceo-plan-mode.test.ts

@@ -107,7 +107,11 @@ describeE2E('plan-ceo-review plan-mode smoke (gate)', () => {
       skillName: 'plan-ceo-review',
       inPlanMode: true,
       extraArgs: ['--disallowedTools', 'AskUserQuestion'],
-      timeoutMs: 300_000,
+      // 10-min budget: post-v1.28 the model under --disallowedTools sometimes
+      // spends 5+ min in "high effort thinking" before surfacing options. The
+      // judge fires every 30s and high-water-marks the first prose-AUQ tick;
+      // 10 min gives the model 20 surfacing windows.
+      timeoutMs: 600_000,
     });
 
     // The user must SEE the question one way or another. Three valid surfaces:
@@ -159,5 +163,5 @@ describeE2E('plan-ceo-review plan-mode smoke (gate)', () => {
     // to enforce the at-bottom contract against. The contract is
     // exercised by the periodic finding-count tests, which DO run the
     // full review.
-  }, 360_000);
+  }, 660_000);  // outer = inner timeoutMs (600_000) + 60s grace
 });