V4.26.4

What's Changed

• fix: astrbot_file_read_tool returns clear error for directory path instead of misleading Permission denied (#9088) (41f896030)
• fix: reduce markdown streaming lag (#9097) (372b9f5bf)
• fix: resample and downmix WAV files for Tencent Silk encoding (#9100) (4cf210e50)
• fix: guard desktop-managed core restart (#9098) (b673cb375)
• fix: updated reboot logic (#9073) (3b41a870f)
• 修复了DISCORD适配器注册命令正则过于严格的问题 (#9102) (029e9c84a)
• fix: reject non-200 download responses (#9085) (70a52ea6d)
• fix: wecom adapter returning json instead of plain text (#9107) (ea19be1d0)
• fix: preserve webhook callback responses (1e3b12acc)
• fix: skip _unbind_plugin for inactivated plugins in reload() (#9096) (152fb3be8)
• fix: apply fallback chat models to background wakeups (#9094) (413340fca)