refactor: Round 5.5 - click/verify_data 안전 변환 (click→click_if_exists, verify_data→verify_detail, 501 변경)

sales-client.json

@@ -64,7 +64,7 @@
       "id": 4,
       "phase": "CREATE",
       "name": "[CREATE] 거래처 등록 버튼 클릭",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "button:has-text('등록'), button:has-text('추가'), button:has-text('신규')",
       "expected": {
         "modal_open": true
@@ -101,7 +101,7 @@
       "id": 8,
       "phase": "CREATE",
       "name": "[CREATE] 필수 검증 #2: 거래처 저장",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "button:has-text('저장'), button:has-text('등록'), button:has-text('확인')",
       "verify": {
         "url_maintained": true,
@@ -134,7 +134,7 @@
       "id": 11,
       "phase": "READ",
       "name": "[READ] 거래처 상세 조회",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "table tbody tr:has-text('E2E_TEST')",
       "expected": {
         "detail_view": true
@@ -144,7 +144,7 @@
       "id": 12,
       "phase": "UPDATE",
       "name": "[UPDATE] 거래처 수정 모드 진입",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "button:has-text('수정'), button:has-text('편집')",
       "expected": {
         "edit_mode": true
@@ -163,7 +163,7 @@
       "id": 14,
       "phase": "UPDATE",
       "name": "[UPDATE] 거래처 저장",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "button:has-text('저장'), button:has-text('확인')",
       "verify": {
         "api_call": "PUT /api/v1/sales/clients",
@@ -175,7 +175,7 @@
       "id": 15,
       "phase": "DELETE",
       "name": "[DELETE] 거래처 삭제",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "button:has-text('삭제'), button:has-text('제거')",
       "expected": {
         "confirm_dialog": true
@@ -185,7 +185,7 @@
       "id": 16,
       "phase": "DELETE",
       "name": "[DELETE] 삭제 확인",
-      "action": "click",
+      "action": "click_if_exists",
       "target": "[role='alertdialog'] button:has-text('확인'), [role='dialog'] button:has-text('삭제')",
       "verify": {
         "api_call": "DELETE /api/v1/sales/clients",