Initial commit: AutonetSellCar platform with deployment system

- Frontend: Next.js 14 with TypeScript
- Backend: FastAPI with SQLAlchemy
- Agent: Carmodoo sync agent
- Deployment: Docker Compose based staging/production setup
- Scripts: Automated deployment with rollback support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/searchCarNum_function.js

@@ -0,0 +1,70 @@
+function searchCarNum(flag) {
+
+	if(searchDupFlag) {
+
+        alert("검색중입니다.");
+
+        return false;
+
+	}
+
+    var carNum = "";
+
+    var inputObj = null;
+
+    if (flag == 'main') {
+
+        inputObj = $("#mainCarNum");
+
+    } else {
+
+        inputObj = $("#headerCarNum");
+
+    }
+
+    carNum = trim(inputObj.val());
+
+    if (carNum == "") return false;
+
+
+
+    if (carNum == "") {
+
+        alert("차량번호를 입력하세요.");
+
+		inputObj.focus();
+
+        return false;
+
+    }
+
+    var rightNum = carNum.substr(carNum.length - 4);
+
+    if (!checkDigitOnly(rightNum)) {
+
+        alert("차량정보를 찾을 수 없습니다.\n정확한 차량번호를 확인하신 후 다시 시도해 주시기 바랍니다.");
+
+		inputObj.focus();
+
+		return false;
+
+    }
+
+    if (carNum.length < 7 || carNum.length > 9) {
+
+        alert("차량 번호를 정확하게 입력해주세요.");
+
+		inputObj.focus();
+
+		return false;
+
+    }
+
+
+
+    inputObj.blur();
+
+
+
+    // 로딩 스타트
+