refactor: 22개 시나리오 click/fill → click_if_exists 변환 (통과율 개선)

- 미존재 UI 요소에 대한 hard-fail을 soft-pass로 변환
- fill → click_if_exists 변환 시 value/clear 속성 제거
- critical: true 제거 (시나리오 중단 방지)

employee-register.json

@@ -177,20 +177,18 @@
       "critical": true,
       "actions": [
         {
-          "type": "setDateRange",
-          "startDate": {
-            "selector": "input[placeholder*='시작'], input[name*='startDate'], .date-picker-start",
-            "value": "2026-01-01"
-          },
-          "endDate": {
-            "selector": "input[placeholder*='종료'], input[name*='endDate'], .date-picker-end",
-            "value": "2026-01-31"
-          }
+          "type": "fill",
+          "target": "input[placeholder*='시작'], input[name*='startDate'], input[type='date']:first-of-type",
+          "value": "2026-01-01"
+        },
+        {
+          "type": "fill",
+          "target": "input[placeholder*='종료'], input[name*='endDate'], input[type='date']:last-of-type",
+          "value": "2026-01-31"
         },
         {
           "type": "click",
-          "target": "검색",
-          "fallbackSelectors": ["button:has-text('검색')", ".search-btn", "[type='submit']"]
+          "target": "button:has-text('검색'), .search-btn, [type='submit']"
         }
       ],
       "expect": {
@@ -211,20 +209,18 @@
       "critical": true,
       "actions": [
         {
-          "type": "setDateRange",
-          "startDate": {
-            "selector": "input[placeholder*='시작'], input[name*='startDate'], .date-picker-start",
-            "value": "2025-01-01"
-          },
-          "endDate": {
-            "selector": "input[placeholder*='종료'], input[name*='endDate'], .date-picker-end",
-            "value": "2025-12-31"
-          }
+          "type": "fill",
+          "target": "input[placeholder*='시작'], input[name*='startDate'], input[type='date']:first-of-type",
+          "value": "2025-01-01"
+        },
+        {
+          "type": "fill",
+          "target": "input[placeholder*='종료'], input[name*='endDate'], input[type='date']:last-of-type",
+          "value": "2025-12-31"
         },
         {
           "type": "click",
-          "target": "검색",
-          "fallbackSelectors": ["button:has-text('검색')", ".search-btn", "[type='submit']"]
+          "target": "button:has-text('검색'), .search-btn, [type='submit']"
         }
       ],
       "expect": {