Feature request: Favorites (⭐) and comments in claude --resume session list

### Problem

When working on multiple projects in Claude Code, it's hard to quickly identify key sessions in `claude --resume`. The list is long, and the summaries are often truncated or similar, making navigation tedious.

### Feature idea

Add the ability to:

1. ⭐ Mark a session as favorite
2. ✎ Optionally attach a short comment/note per session

This could dramatically improve session management, especially for long-term or multi-project workflows.

### Visual example

**Current:**

Modified Created # Messages Git Branch Summary
❯ 1. 17m ago 39m ago 154 - This session is being continued from a previo...

1. 1 day ago 1 day ago 463 - This session is being continued from a previo...
2. 3 days ago 3 days ago 858 - Agents Documentation Update

**Proposed:**

Modified Created # Messages Git Branch Summary
❯ 1. ⭐ 17m ago 39m ago 154 - This session is being continued from a previo...

1. 1 day ago 1 day ago 463 - This session is being continued from a previo...
2. ⭐ 3 days ago 3 days ago 858 - Agents Documentation Update ✎ rewrite prompt logic

### Why this matters

- Easier to return to critical sessions
- Adds structure when managing long-term development workflows
- Reduces context switching overhead

Thanks for considering this!