Add timestamps and user/assistant message color differentiation

Feature Request

1. Timestamps on messages

Add optional timestamps (date/time) displayed alongside each user and assistant message in the conversation. This helps when scrolling through long sessions to understand when interactions happened and provides temporal context for the work done.

2. Different colors for user prompts vs assistant responses

Allow users to configure distinct colors or visual styling for their own input messages vs Claude's responses. When scrolling through a long conversation, it's currently hard to quickly distinguish between what the user typed and what Claude generated. Color differentiation would make navigation much faster.

Why this matters

• Long Claude Code sessions can span hours with many exchanges
• Reviewing past work in a session requires quickly scanning who said what and when
• Both features are standard in most chat/terminal interfaces
• Timestamps are especially useful when resuming sessions or reviewing work done earlier

Suggested implementation

• Timestamps could be a simple setting (e.g., showTimestamps: true) that prepends or appends time to each message
• Colors could be configurable via settings (e.g., userMessageColor, assistantMessageColor) or follow a sensible default

Environment

• Claude Code CLI + VS Code extension
• Windows 11 Pro

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