Display real-time session and context metrics to improve user awareness, cost control.

Feature Description

The TUI should display the following information in a visible and accessible section (e.g., below the chat box or at the top):

Context Usage

• Current context usage vs total available context (e.g., 12K / 32K tokens)

Token Metrics

• Total input tokens
• Total output tokens
• Cached tokens (if applicable)

Cost Tracking

• Total cost incurred during the session (in $)

Time metrics

• Total time elapsed for each step/message in a conversation
• Time elapsed since the session started or last reset

Use Case

• Helps users monitor context limits
• Improves cost transparency and control
• Enables users to decide when to start a fresh session instead of continuing with an overloaded one

Additional Context

No response

How important is this to you?

None

從 TUI 的聊天和工作階段顯示開始，然後追蹤現有的逐則訊息回應資料，以取得內容、權杖、成本和時間值。定義應如何顯示工作階段總計和每個步驟的耗時，並驗證顯示內容會在對話過程中更新，且在新的工作階段開始時重設。