chore: update .gitignore and remove quick insert options from button configurations

- Added new entries to .gitignore for multi-agent MCP task queue and related rules.
- Removed "즉시 저장" (quick insert) options from the ScreenSettingModal and BasicTab components to streamline button configurations.
- Cleaned up unused event options in the V2ButtonConfigPanel to enhance clarity and maintainability.

These changes aim to improve project organization and simplify the user interface by eliminating redundant options.

frontend/components/unified/UnifiedRepeater.tsx

@@ -680,11 +680,15 @@ export const UnifiedRepeater: React.FC<UnifiedRepeaterProps> = ({
       const now = new Date();
 
       switch (col.autoFill.type) {
-        case "currentDate":
-          return now.toISOString().split("T")[0]; // YYYY-MM-DD
+        case "currentDate": {
+          const pad = (n: number) => String(n).padStart(2, "0");
+          return `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())}`;
+        }
 
-        case "currentDateTime":
-          return now.toISOString().slice(0, 19).replace("T", " "); // YYYY-MM-DD HH:mm:ss
+        case "currentDateTime": {
+          const pad = (n: number) => String(n).padStart(2, "0");
+          return `${now.getFullYear()}-${pad(now.getMonth() + 1)}-${pad(now.getDate())} ${pad(now.getHours())}:${pad(now.getMinutes())}:${pad(now.getSeconds())}`;
+        }
 
         case "sequence":
           return rowIndex + 1; // 1부터 시작하는 순번