merge: 合并 bgg 主分支

Refs-Micro-Spec: 24_2026-06-12_23-19_合并bgg主分支冲突收口.md

Merge commit 'b67756c152424825d0bc076588a2a54833d8e632'

Merge commit '3b9403a3291a3bde724416a780d8a1c31c2462c6'

Merge commit '295a587df5bb3b5a6661edff1c692dc8196aae5e'

Merge commit '295a587df5bb3b5a6661edff1c692dc8196aae5e'

Merge commit '295a587df5bb3b5a6661edff1c692dc8196aae5e'

Merge commit '41c8e1a53896d439eb1b2045119be1f8232ac327'

# Conflicts:
#	lib/main.dart
#	lib/pages/common/common_intro_controller.dart
#	lib/pages/download/detail/widgets/item.dart
#	lib/pages/dynamics/widgets/video_panel.dart
#	lib/pages/history/widgets/item.dart
#	lib/pages/video/introduction/local/controller.dart

fix(download): 修正离线下载队列调度

Refs-Spec: 10_2026-05-26_22-31_增强离线下载队列调度.md

fix(video): 修复听视频返回分P同步

Refs-Spec: 7_2026-05-23_00-29_修复分P听视频返回同步.md

Revert "fix(ci): 预先显式执行 flutter build windows,确保 portable zip 源目录存在"

This reverts commit 9d0ab4817a16938b7a55bb0c308f4268c7c3a6e9.