섹션 삭제 후 텍스트 블록 추가 버그 수정 및 버튼/구분선 스타일-속성 패널 동기화

src/app/editor/forms/FormControllerPanel.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import type { Block, ButtonBlockProps, FormBlockProps } from "@/features/editor/state/editorStore";
+import { NumericPropertyControl } from "@/features/editor/components/NumericPropertyControl";
 
 interface FormControllerPanelProps {
   block: Block; // type === "form"
@@ -129,6 +130,64 @@ export function FormControllerPanel({ block, blocks, selectedBlockId, updateBloc
         )}
       </div>
 
+      <div className="space-y-2 border-t border-slate-800 pt-3">
+        <h3 className="text-[11px] font-semibold text-slate-200">폼 레이아웃</h3>
+        <label className="flex flex-col gap-1 text-xs text-slate-400">
+          <span>폼 너비 모드</span>
+          <select
+            className="w-full rounded border border-slate-700 bg-slate-950 px-2 py-1 text-[11px] outline-none focus:border-sky-500"
+            value={formProps.formWidthMode ?? "auto"}
+            onChange={(e) =>
+              updateBlock(selectedBlockId, {
+                formWidthMode: e.target.value,
+              } as any)
+            }
+          >
+            <option value="auto">내용에 맞춤</option>
+            <option value="full">전체 폭</option>
+            <option value="fixed">고정 폭 (px)</option>
+          </select>
+        </label>
+        {(formProps.formWidthMode ?? "auto") === "fixed" && (
+          <NumericPropertyControl
+            label="폼 고정 너비 (px)"
+            unitLabel="(px)"
+            value={typeof formProps.formWidthPx === "number" ? formProps.formWidthPx : 360}
+            min={160}
+            max={960}
+            step={10}
+            presets={[
+              { id: "sm", label: "좁게", value: 280 },
+              { id: "md", label: "보통", value: 360 },
+              { id: "lg", label: "넓게", value: 480 },
+            ]}
+            onChangeValue={(v) =>
+              updateBlock(selectedBlockId, {
+                formWidthPx: v,
+              } as any)
+            }
+          />
+        )}
+        <NumericPropertyControl
+          label="폼 위/아래 여백 (px)"
+          unitLabel="(px)"
+          value={typeof formProps.marginYPx === "number" ? formProps.marginYPx : 16}
+          min={0}
+          max={80}
+          step={2}
+          presets={[
+            { id: "tight", label: "좁게", value: 8 },
+            { id: "normal", label: "보통", value: 16 },
+            { id: "relaxed", label: "넓게", value: 32 },
+          ]}
+          onChangeValue={(v) =>
+            updateBlock(selectedBlockId, {
+              marginYPx: v,
+            } as any)
+          }
+        />
+      </div>
+
       <div className="space-y-3 border-t border-slate-800 pt-3 mt-4">
         <h3 className="text-[11px] font-semibold text-slate-200">폼 컨트롤러</h3>