refactor: 44개 시나리오 품질 개선 (false positive 제거 + flaky 수정 + E2E_TEST_ 표준화)

Phase 1 - False Positive 제거 (36개):
- R.ok=true 무조건 반환 → 조건부 검증으로 교체
- 영향: edge-*, form-validation-*, pagination-sort-*, search-*, reload-persist-*,
  batch-create-*, detail-roundtrip-*, workflow-*, cross-module-*

Phase 2 - Flaky rows[0] 패턴 수정 (7개):
- detail-verify-acc-sales.json: CAPTURE/READ 스텝 E2E_TEST_ 타겟팅
- vendor-management.json: 행 클릭 E2E_TEST_ 타겟팅
- batch-update-account-sales.json: CAPTURE/SELECT/VERIFY/RESTORE 스텝
- sales-management.json: DELETE fallback 경고 로깅

Phase 3 - E2E_TEST_ 접두사 표준화 (1개):
- employee-register.json: 홍길동→E2E_TEST_사원, EMP2026001→E2E_TEST_EMP001

테스트 결과: 175 PASS / 9 FAIL (숨겨진 실제 버그 5건 노출)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

detail-verify-acc-sales.json

@@ -30,7 +30,7 @@
       "id": 3,
       "name": "[회계관리 > 매출관리] [CAPTURE] 첫 행 모든 셀 값 캡처",
       "action": "evaluate",
-      "script": "(async()=>{const w=ms=>new Promise(r=>setTimeout(r,ms));const R={phase:'CAPTURE'};await w(500);const rows=document.querySelectorAll('table tbody tr');R.rowCount=rows.length;if(rows.length===0){R.error='테이블에 데이터 없음';R.ok=false;return JSON.stringify(R);}const firstRow=rows[0];const cells=firstRow.querySelectorAll('td');R.cellCount=cells.length;const captured={};const colNames=['checkbox','no','salesNo','vendorName','salesDate','salesType','supplyAmount','vat','totalAmount','taxInvoice','transStatement'];cells.forEach((cell,i)=>{const key=colNames[i]||('col'+i);const text=cell.innerText?.trim()||'';const input=cell.querySelector('input[type=\"checkbox\"]');if(input){captured[key]=input.checked?'checked':'unchecked';}else{captured[key]=text;}});window.__E2E_CAPTURED__=captured;R.captured=captured;R.ok=true;return JSON.stringify(R);})()",
+      "script": "(async()=>{const w=ms=>new Promise(r=>setTimeout(r,ms));const R={phase:'CAPTURE'};await w(500);const rows=document.querySelectorAll('table tbody tr');R.rowCount=rows.length;if(rows.length===0){R.error='테이블에 데이터 없음';R.ok=false;return JSON.stringify(R);}const testRow=Array.from(rows).find(r=>r.innerText?.includes('E2E_TEST_'));const firstRow=testRow||rows[0];R.usedTestRow=!!testRow;const cells=firstRow.querySelectorAll('td');R.cellCount=cells.length;const captured={};const colNames=['checkbox','no','salesNo','vendorName','salesDate','salesType','supplyAmount','vat','totalAmount','taxInvoice','transStatement'];cells.forEach((cell,i)=>{const key=colNames[i]||('col'+i);const text=cell.innerText?.trim()||'';const input=cell.querySelector('input[type=\"checkbox\"]');if(input){captured[key]=input.checked?'checked':'unchecked';}else{captured[key]=text;}});window.__E2E_CAPTURED__=captured;R.captured=captured;R.ok=true;return JSON.stringify(R);})()",
       "timeout": 15000,
       "phase": "CAPTURE"
     },
@@ -38,7 +38,7 @@
       "id": 4,
       "name": "[회계관리 > 매출관리] [READ] 첫 행 클릭 → 상세 진입",
       "action": "evaluate",
-      "script": "(async()=>{const w=ms=>new Promise(r=>setTimeout(r,ms));const R={phase:'READ'};const rows=document.querySelectorAll('table tbody tr');if(rows.length===0){R.error='테이블 행 없음';R.ok=false;return JSON.stringify(R);}rows[0].click();await w(2500);R.detailUrl=location.pathname+location.search;R.ok=true;return JSON.stringify(R);})()",
+      "script": "(async()=>{const w=ms=>new Promise(r=>setTimeout(r,ms));const R={phase:'READ'};const rows=document.querySelectorAll('table tbody tr');if(rows.length===0){R.error='테이블 행 없음';R.ok=false;return JSON.stringify(R);}const testRow=Array.from(rows).find(r=>r.innerText?.includes('E2E_TEST_'));const targetRow=testRow||rows[0];R.usedTestRow=!!testRow;targetRow.click();await w(2500);R.detailUrl=location.pathname+location.search;R.ok=true;return JSON.stringify(R);})()",
       "timeout": 15000,
       "phase": "READ"
     },