Add task work date management and enhance task popup layout

.vscode/ftp-kr.sync.cache.json

@@ -197,20 +197,20 @@
       "layout": {
         "style.css": {
           "type": "-",
-          "size": 18298,
-          "lmtime": 1734346488819,
+          "size": 18616,
+          "lmtime": 1738914090080,
           "modified": false
         },
         "style.css.map": {
           "type": "-",
-          "size": 32824,
-          "lmtime": 1734346488819,
+          "size": 33482,
+          "lmtime": 1738914090080,
           "modified": false
         },
         "style.scss": {
           "type": "-",
-          "size": 22746,
-          "lmtime": 1734346488372,
+          "size": 23242,
+          "lmtime": 1738914089934,
           "modified": false
         }
       },
@@ -470,8 +470,8 @@
           },
           "main_view.php": {
             "type": "-",
-            "size": 22533,
-            "lmtime": 1734256586048,
+            "size": 22535,
+            "lmtime": 1738913967676,
             "modified": false
           },
           "task_edit.php": {
@@ -482,8 +482,8 @@
           },
           "task_popup.php": {
             "type": "-",
-            "size": 5214,
-            "lmtime": 1734256307848,
+            "size": 5285,
+            "lmtime": 1738913959844,
             "modified": false
           },
           "task_single.php": {