Task progress panel

Key features

• Status bardock card above the input box of the dialog page: N background tasks are running
• Expand detailsClick the task line to expand: status/time consumption/details + output tail
• Real-time tailpoll the output route every 1s during expansion, and replace the entire rendering (the image patch ensures zero competition and consistent view with the official task_output tool)
• Scroll areaoutput area max 10 lines (160px), beyond the variable scroll bar (the tail can be reviewed after keeping the tail)
• Conversation pages onlynon-Chat views (trajectory/taskboard, etc.) are automatically hidden