test(qa-bugs): keep claude-opus-4-7 after qa-b6-static stalled on the default model

qa-b6-static timed out on claude-fable-5-1 in census 36597762183 and in one
of two targeted reruns. Both times the stream stopped mid-message with no
pending tool, right after the model found the disabled submit button, and
stayed silent until the 300 s deadline. Per the B8 fallback, re-pin with a
TODOS entry; budgets and retries are unchanged. A rerun on opus-4-7 passed
(125 s, 5/5 detected).

test/skill-e2e-qa-bugs.test.ts

@@ -1,5 +1,4 @@
 import { describe, test, expect, beforeAll, afterAll } from 'bun:test';
-import { resolveEvalModel } from '../lib/eval-model';
 import { CAPTURE_MS, CAPTURE_LONG_MS } from './helpers/eval-budgets';
 import { runSkillTest } from './helpers/session-runner';
 import { outcomeJudge } from './helpers/llm-judge';
@@ -109,7 +108,7 @@ CRITICAL RULES:
       timeout: CAPTURE_MS,
       testName: `qa-${label}`,
       runId,
-      model: resolveEvalModel('capture'),
+      model: 'claude-opus-4-7',
     });
 
     logCost(`/qa ${label}`, result);