Add timestamps to tool use output

Feature Request

Add timestamps to tool use output in the CLI, displayed right-aligned opposite the tool indicator.

Example

Current:

Read 1 file (ctrl+o to expand)

Proposed:

Read 1 file (ctrl+o to expand)                                          00:15 2026/03/11

Use Case

• Helps track when operations occurred during long sessions
• Useful for debugging and session review
• Provides temporal context when reviewing conversation history

Implementation Notes

• Timestamp format could be configurable (time only, date+time, ISO format, etc.)
• Right-aligned to avoid interfering with existing tool output
• Could be an opt-in setting for users who want it