BeefTV v1.6.3

• Preserve explicit first/last-frame roles and adaptive aspect ratios for Seedance 2.5, including official model aliases and BeefAPI Enterprise requests.
• Keep reference generation distinct from frame, edit and extension constraints; retain explicitly selected reference and extension modes.
• Add a supported-mode selector to the professional video canvas and explain when output parameters follow input media.
• Explain nested TaskTypeConstraint failures with actionable guidance and retain the same message and diagnostic IDs after task reload.

安装说明：快速开始。Mac 首次安装的系统放行步骤见该说明；已安装用户可在应用内检查更新。