style(recommend): 收窄观看全集按钮

docs/plans/PROGRESS.md

@@ -1186,4 +1186,4 @@ $ flutter test
 - 拖动仅控制视频浮层内容，顶部导航与根底栏保持常驻。
 - 进度条固定中心并动画到 6 高，时间气泡限制在左右 12；end/cancel/pointer 兜底均恢复拖动前状态。
 - 修复 `scrubCancelRequest` 误置于 `initState` 的编译错误，并清理推荐页未使用变量；`flutter analyze` 无问题。
-- 观看全集按钮相对进度条上移 8，间距调整为 20；`flutter analyze` 无问题。
+- 观看全集按钮相对进度条上移 8，间距调整为 20；按钮改为屏幕宽度 70% 左对齐，`flutter analyze` 无问题。

lib/pages/player/widgets/home_feed_recommend_panel.dart

@@ -1,5 +1,7 @@
 // Author: fruit.com.cn
 
+import 'dart:math' as math;
+
 import 'package:flutter/material.dart';
 
 import '../../../core/data/models/drama.dart';
@@ -106,7 +108,7 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
           _synopsis(l10n, synopsis),
         ],
         const SizedBox(height: 12),
-        _watchAll(l10n),
+        _watchAll(context, l10n),
       ],
     );
   }
@@ -245,37 +247,46 @@ class _HomeFeedInfoPanelState extends State<HomeFeedInfoPanel> {
     );
   }
 
-  Widget _watchAll(AppLocalizations l10n) {
-    return SizedBox(
-      width: double.infinity,
-      height: _watchAllHeight,
-      child: DecoratedBox(
-        key: const Key('home-feed-full-series-bg'),
-        decoration: BoxDecoration(
-          gradient: const LinearGradient(
-            colors: [AppColors.actionRed, AppColors.blue],
-          ),
-          borderRadius: BorderRadius.circular(8),
-        ),
-        child: Material(
-          color: AppColors.transparent,
-          child: InkWell(
-            key: const Key('home-feed-full-series'),
-            onTap: widget.onOpenFullPlayer,
-            borderRadius: BorderRadius.circular(8),
-            child: Center(
-              child: Text(
-                l10n.homeWatchAll,
-                style: const TextStyle(
-                  color: AppColors.textPrimary,
-                  fontSize: 15,
-                  fontWeight: FontWeight.w600,
+  Widget _watchAll(BuildContext context, AppLocalizations l10n) {
+    final screenWidth = MediaQuery.sizeOf(context).width;
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        final buttonWidth = math.min(screenWidth * 0.7, constraints.maxWidth);
+        return Align(
+          alignment: Alignment.centerLeft,
+          child: SizedBox(
+            width: buttonWidth,
+            height: _watchAllHeight,
+            child: DecoratedBox(
+              key: const Key('home-feed-full-series-bg'),
+              decoration: BoxDecoration(
+                gradient: const LinearGradient(
+                  colors: [AppColors.actionRed, AppColors.blue],
+                ),
+                borderRadius: BorderRadius.circular(8),
+              ),
+              child: Material(
+                color: AppColors.transparent,
+                child: InkWell(
+                  key: const Key('home-feed-full-series'),
+                  onTap: widget.onOpenFullPlayer,
+                  borderRadius: BorderRadius.circular(8),
+                  child: Center(
+                    child: Text(
+                      l10n.homeWatchAll,
+                      style: const TextStyle(
+                        color: AppColors.textPrimary,
+                        fontSize: 15,
+                        fontWeight: FontWeight.w600,
+                      ),
+                    ),
+                  ),
                 ),
               ),
             ),
           ),
-        ),
-      ),
+        );
+      },
     );
   }
 

test/home/home_preview_layout_test.dart

@@ -659,6 +659,11 @@ void main() {
 
     final bar = tester.getRect(find.byKey(const Key('home-feed-full-series')));
     expect(bar.height, 44);
+    final overlayRect = tester.getRect(
+      find.byKey(const Key('home-feed-gesture')),
+    );
+    expect(bar.left, closeTo(overlayRect.left + 14, 0.1));
+    expect(bar.width, closeTo(overlayRect.width * 0.7, 1));
     final buttonBackground =
         tester
                 .widget<DecoratedBox>(