fix(recommend): 统一全部短剧筛选左对齐

docs/plans/PROGRESS.md

@@ -1218,3 +1218,5 @@ $ flutter test
 - 第 4 行复用选中胶囊样式，右侧改为 44×44 圆形深灰按钮和 22 三横线图标；`flutter analyze` 无问题。
 - 筛选行距收紧到 6、项距 10，chip 左右 padding 12；四行均可横向回弹滑动。
 - 第 4 行仅最热/最新在滚动区内，44 圆形筛选按钮固定在滚动区外；`flutter analyze` 无问题。
+- 四行统一复用 `_filterRow` 构建，筛选区仅保留一层左右 12 padding。
+- 新增量化测试断言四行首项 x 均为 12、相邻 chip 间距均为 10；`flutter analyze` 无问题。

lib/pages/recommend/widgets/all_dramas_filter_grid.dart

@@ -142,9 +142,9 @@ class _AllDramasFilterGridState extends State<AllDramasFilterGrid> {
     final genres = _availableGenres(l10n);
     return Padding(
       padding: const EdgeInsets.fromLTRB(
-        AppDimens.feedPageHorizontal,
+        AppDimens.allDramasHorizontal,
         0,
-        AppDimens.allDramasFilterRight,
+        AppDimens.allDramasHorizontal,
         AppDimens.allDramasFilterToGridGap,
       ),
       child: Column(
@@ -184,37 +184,45 @@ class _AllDramasFilterGridState extends State<AllDramasFilterGrid> {
     required String selected,
     required ValueChanged<String> onSelected,
   }) {
-    return Padding(
-      key: Key('all-filter-row-$row'),
-      padding: const EdgeInsets.only(bottom: AppDimens.filterRowGap),
-      child: SizedBox(
-        height: AppDimens.filterChipHeight,
-        child: SingleChildScrollView(
-          key: Key('all-filter-scroll-$row'),
-          scrollDirection: Axis.horizontal,
-          physics: const BouncingScrollPhysics(),
-          child: Row(
-            mainAxisSize: MainAxisSize.min,
-            mainAxisAlignment: MainAxisAlignment.start,
-            crossAxisAlignment: CrossAxisAlignment.center,
-            children: [
-              for (var index = 0; index < options.length; index++) ...[
-                _chip(
-                  key: Key('all-filter-${options[index].id}'),
-                  label: options[index].label,
-                  selected: selected == options[index].id,
-                  onTap: () => onSelected(options[index].id),
-                ),
-                if (index < options.length - 1)
-                  const SizedBox(width: AppDimens.filterItemGap),
-              ],
+    return _filterRow(
+      row: row,
+      child: SingleChildScrollView(
+        key: Key('all-filter-scroll-$row'),
+        scrollDirection: Axis.horizontal,
+        physics: const BouncingScrollPhysics(),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          mainAxisAlignment: MainAxisAlignment.start,
+          crossAxisAlignment: CrossAxisAlignment.center,
+          children: [
+            for (var index = 0; index < options.length; index++) ...[
+              _chip(
+                key: Key('all-filter-${options[index].id}'),
+                label: options[index].label,
+                selected: selected == options[index].id,
+                onTap: () => onSelected(options[index].id),
+              ),
+              if (index < options.length - 1)
+                const SizedBox(width: AppDimens.filterItemGap),
             ],
-          ),
+          ],
         ),
       ),
     );
   }
 
+  Widget _filterRow({
+    required int row,
+    required Widget child,
+    double height = AppDimens.filterChipHeight,
+  }) {
+    return Padding(
+      key: Key('all-filter-row-$row'),
+      padding: EdgeInsets.only(bottom: row < 3 ? AppDimens.filterRowGap : 0),
+      child: SizedBox(height: height, child: child),
+    );
+  }
+
   Widget _genreRow(
     int row,
     List<({String id, String label})> options,
@@ -270,8 +278,8 @@ class _AllDramasFilterGridState extends State<AllDramasFilterGrid> {
   }
 
   Widget _sortRow(AppLocalizations l10n) {
-    return SizedBox(
-      key: const Key('all-filter-row-3'),
+    return _filterRow(
+      row: 3,
       height: AppDimens.allDramasFilterButton,
       child: Row(
         mainAxisAlignment: MainAxisAlignment.start,

test/recommend/all_dramas_filter_alignment_test.dart

@@ -0,0 +1,110 @@
+// Author: fruit.com.cn
+
+import 'package:flutter/material.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:fruitshorts/core/data/services/home_feed_controller.dart';
+import 'package:fruitshorts/core/theme/app_dimens.dart';
+import 'package:fruitshorts/l10n/app_localizations.dart';
+import 'package:fruitshorts/pages/recommend/widgets/all_dramas_filter_grid.dart';
+
+import '../support/fake_catalog.dart';
+
+void main() {
+  testWidgets('all filter rows start at the same left edge', (tester) async {
+    final catalog = FakeCatalogRepository();
+    final controller = HomeFeedController(catalog)
+      ..seedRecommend(catalog.dramas);
+    addTearDown(controller.dispose);
+
+    await tester.pumpWidget(
+      MaterialApp(
+        locale: const Locale('en'),
+        supportedLocales: AppLocalizations.supportedLocales,
+        localizationsDelegates: AppLocalizations.localizationsDelegates,
+        home: Scaffold(
+          body: AllDramasFilterGrid(
+            feedController: controller,
+            onOpenDrama: (_) {},
+            onOpenFilter: () {},
+          ),
+        ),
+      ),
+    );
+    await tester.pumpAndSettle();
+
+    expect(AppDimens.allDramasHorizontal, 12);
+    final firstChips = [
+      find.descendant(
+        of: find.byKey(const Key('all-filter-row-0')),
+        matching: find.byKey(const Key('all-filter-all')),
+      ),
+      find.descendant(
+        of: find.byKey(const Key('all-filter-row-1')),
+        matching: find.byKey(const Key('all-filter-all')),
+      ),
+      find.descendant(
+        of: find.byKey(const Key('all-filter-row-2')),
+        matching: find.byKey(const Key('all-filter-all')),
+      ),
+      find.byKey(const Key('all-sort-hot')),
+    ];
+    final starts = firstChips
+        .map((finder) => tester.getTopLeft(finder).dx)
+        .toList(growable: false);
+
+    for (final start in starts) {
+      expect(start, closeTo(12, 0.5));
+      expect(start, closeTo(starts.first, 0.5));
+    }
+
+    final rowZeroChips = [
+      find.byKey(const Key('all-filter-all')).first,
+      find.byKey(const Key('all-filter-local')),
+      find.byKey(const Key('all-filter-asia')),
+    ];
+    final rowZeroRects = rowZeroChips.map(tester.getRect).toList();
+    final rowZeroGaps = [
+      for (var index = 1; index < rowZeroRects.length; index++)
+        rowZeroRects[index].left - rowZeroRects[index - 1].right,
+    ];
+    expect(rowZeroGaps[0], closeTo(10, 0.5));
+    expect(rowZeroGaps[1], closeTo(rowZeroGaps[0], 0.5));
+
+    final rowOneAll = find.descendant(
+      of: find.byKey(const Key('all-filter-row-1')),
+      matching: find.byKey(const Key('all-filter-all')),
+    );
+    final rowOneSubtitles = find.byKey(const Key('all-filter-subtitles'));
+    final rowOneDubbed = find.byKey(const Key('all-filter-dubbed'));
+    final rowOneGap =
+        tester.getTopLeft(rowOneSubtitles).dx -
+        tester.getTopRight(rowOneAll).dx;
+    expect(rowOneGap, closeTo(10, 0.5));
+    expect(
+      tester.getTopLeft(rowOneDubbed).dx -
+          tester.getTopRight(rowOneSubtitles).dx,
+      closeTo(rowOneGap, 0.5),
+    );
+
+    final rowTwoAll = find.descendant(
+      of: find.byKey(const Key('all-filter-row-2')),
+      matching: find.byKey(const Key('all-filter-all')),
+    );
+    final rowTwoReversal = find.byKey(const Key('all-filter-reversal'));
+    final rowTwoUplifting = find.byKey(const Key('all-filter-uplifting'));
+    final rowTwoGap =
+        tester.getTopLeft(rowTwoReversal).dx - tester.getTopRight(rowTwoAll).dx;
+    expect(rowTwoGap, closeTo(10, 0.5));
+    expect(
+      tester.getTopLeft(rowTwoUplifting).dx -
+          tester.getTopRight(rowTwoReversal).dx,
+      closeTo(rowTwoGap, 0.5),
+    );
+
+    expect(
+      tester.getTopLeft(find.byKey(const Key('all-sort-new'))).dx -
+          tester.getTopRight(find.byKey(const Key('all-sort-hot'))).dx,
+      closeTo(10, 0.5),
+    );
+  });
+}

test/recommend/recommend_sections_test.dart

@@ -259,12 +259,15 @@ void main() {
     ];
     expect(
       filterStarts,
-      everyElement(closeTo(AppDimens.feedPageHorizontal, 0.1)),
+      everyElement(closeTo(AppDimens.allDramasHorizontal, 0.1)),
     );
     final pageRect = tester.getRect(find.byKey(const Key('recommend-page')));
     for (var row = 0; row < 4; row++) {
       final rowRect = tester.getRect(find.byKey(Key('all-filter-row-$row')));
-      expect(rowRect.left, closeTo(pageRect.left + 14, 0.1));
+      expect(
+        rowRect.left,
+        closeTo(pageRect.left + AppDimens.allDramasHorizontal, 0.1),
+      );
       expect(rowRect.right, closeTo(pageRect.right - 12, 0.1));
     }
     final firstTexts = [
@@ -293,7 +296,7 @@ void main() {
       firstTextX.first,
       closeTo(
         pageRect.left +
-            AppDimens.feedPageHorizontal +
+            AppDimens.allDramasHorizontal +
             AppDimens.filterChipHorizontalPadding,
         0.1,
       ),
@@ -362,7 +365,7 @@ void main() {
     );
     expect(
       tester.getTopLeft(rowZeroAll).dx,
-      closeTo(pageRect.left + AppDimens.feedPageHorizontal, 0.1),
+      closeTo(pageRect.left + AppDimens.allDramasHorizontal, 0.1),
     );
     expect(
       tester.getTopLeft(rowZeroLocal).dx - tester.getTopRight(rowZeroAll).dx,