fix: 提交 uni-scss 到 git，删除未使用的 uni_modules 插件

- 修改 .gitignore: uni_modules/ → /uni_modules/，仅忽略根目录
- 保留 src/uni_modules/uni-scss（构建依赖的 SCSS 变量文件）
- 删除 46 个未使用的 uni-ui 插件

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

src/uni_modules/uni-scss/styles/setting/_radius.scss

@@ -0,0 +1,55 @@
+@mixin radius($r,$d:null ,$important: false){
+  $radius-value:map-get($uni-radius, $r) if($important, !important, null);
+  // Key exists within the $uni-radius variable
+  @if (map-has-key($uni-radius, $r) and  $d){
+		@if $d == t {
+				border-top-left-radius:$radius-value;
+				border-top-right-radius:$radius-value;
+		}@else if $d == r {
+				border-top-right-radius:$radius-value;
+				border-bottom-right-radius:$radius-value;
+		}@else if $d == b {
+				border-bottom-left-radius:$radius-value;
+				border-bottom-right-radius:$radius-value;
+		}@else if $d == l {
+				border-top-left-radius:$radius-value;
+				border-bottom-left-radius:$radius-value;
+		}@else if $d == tl {
+				border-top-left-radius:$radius-value;
+		}@else if $d == tr {
+				border-top-right-radius:$radius-value;
+		}@else if $d == br {
+				border-bottom-right-radius:$radius-value;
+		}@else if $d == bl {
+				border-bottom-left-radius:$radius-value;
+		}
+  }@else{
+		border-radius:$radius-value;
+  }
+}
+
+@each $key, $child in $uni-radius {
+	@if($key){
+		.uni-radius-#{"" + $key} {
+				@include radius($key)
+		}
+	}@else{
+		.uni-radius {
+				@include radius($key)
+		}
+	}
+}
+
+@each $direction in t, r, b, l,tl, tr, br, bl {
+	@each $key, $child in $uni-radius {
+		@if($key){
+			.uni-radius-#{"" + $direction}-#{"" + $key} {
+				@include radius($key,$direction,false)
+			}
+		}@else{
+			.uni-radius-#{$direction} {
+				@include radius($key,$direction,false)
+			}
+		}
+	}
+}