fix(theater): 减小剧场搜索框圆角

docs/plans/PROGRESS.md

@@ -68,3 +68,27 @@ Xcode build done. 44.0s
 
 解读：静态分析零告警，555 项全量测试通过，Android 与 iOS simulator 构建成功；
 `pubspec.lock` 已还原，无依赖变更，未安装或操作真机。
+
+## 2026-10-21 K97.1 剧场搜索框圆角改小
+
+- 已从最新 `origin/develop` 创建 `fix/k97.1-theater-search-radius`。
+- 仅将剧场搜索框圆角从 22 调整为 12，高度 44、颜色、聚焦态及
+  清空/识剧逻辑保持不变，并同步更新对应 widget 断言。
+
+门禁原始输出：
+
+```text
+$ dart analyze lib test
+Analyzing lib, test...
+No issues found!
+
+$ flutter test --no-pub
+00:55 +555: All tests passed!
+
+$ flutter build apk --debug
+Running Gradle task 'assembleDebug'... 25.8s
+✓ Built build/app/outputs/flutter-apk/app-debug.apk
+```
+
+解读：静态分析零告警，555 项全量测试通过，debug APK 构建成功；
+`pubspec.lock` 已还原，无依赖变更，未安装或操作真机。

lib/pages/discover/widgets/discover_search_field.dart

@@ -6,7 +6,7 @@ import '../../../core/theme/app_colors.dart';
 import '../../../l10n/app_localizations.dart';
 
 const double _searchHeight = 44;
-const double _searchRadius = 22;
+const double _searchRadius = 12;
 const double _searchPadding = 14;
 const double _iconSize = 18;
 const double _iconGap = 8;
@@ -16,7 +16,7 @@ const double _clearSize = 18;
 const double _clearIconSize = 12;
 const Duration _focusTransition = Duration(milliseconds: 160);
 
-/// 剧场顶部整行搜索框：浅灰胶囊，聚焦时变白并显示主题色描边。
+/// 剧场顶部整行搜索框：浅灰圆角，聚焦时变白并显示主题色描边。
 class DiscoverSearchField extends StatefulWidget {
   const DiscoverSearchField({
     super.key,

test/discover/home_all_dramas_grid_test.dart

@@ -257,7 +257,7 @@ void main() {
                 .decoration!
             as BoxDecoration;
 
-    expect(shell().borderRadius, BorderRadius.circular(22));
+    expect(shell().borderRadius, BorderRadius.circular(12));
     expect(shell().color, AppColors.card);
     expect((shell().border! as Border).top.color, Colors.transparent);
     expect(