feat: 立志/改过卡片增加编辑模式切换按钮

static/style.css

@@ -492,16 +492,57 @@ body {
 .card-head {
   display: flex;
   align-items: center;
-  gap: 8px;
+  justify-content: space-between;
   margin-bottom: 4px;
 }
 
+.card-head-left {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+}
+
 .card-head h3 {
   font-size: 14px;
   font-weight: 600;
   color: var(--text);
 }
 
+/* ── 编辑模式切换按钮 ── */
+
+.btn-edit-toggle {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  height: 28px;
+  border: none;
+  background: transparent;
+  color: var(--text-muted);
+  border-radius: 6px;
+  cursor: pointer;
+  transition: all 0.2s;
+  flex-shrink: 0;
+}
+
+.btn-edit-toggle:hover {
+  background: var(--bg);
+  color: var(--primary);
+}
+
+.btn-edit-toggle.active {
+  background: var(--primary-light);
+  color: var(--primary);
+}
+
+/* 编辑模式下才显示的元素 */
+.edit-only { display: none; }
+.card.editing .edit-only { display: flex; }
+.card.editing .btn-del { display: inline-flex; }
+
+/* 默认隐藏删除按钮 */
+.btn-del { display: none; }
+
 .icon-h2 {
   width: 16px;
   height: 16px;
@@ -568,7 +609,6 @@ body {
   line-height: 1;
   border-radius: 6px;
   transition: background 0.2s;
-  display: inline-flex;
   align-items: center;
 }