Add conversation naming, numbering, and summaries for easier reference

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

It's difficult to refer back to specific past conversations in Claude Code. When discussing previous work, I have to describe it in full sentences rather than using a quick reference.

Current workaround:

Must describe past work in full sentences
Hard to navigate JSONL conversation files
/compact helps but doesn't solve discoverability
Benefit:
Makes it easy to reference previous work: "In Chat 5 where we fixed the upload modal..." instead of lengthy descriptions.

Proposed Solution

Auto-summarize conversations - Generate a short title/summary for each conversation (e.g., "MHR Upload Modal - Episode Filtering Fix")

Add timestamps - Show date/time for each conversation in the UI

Number conversations - Use a simple numbering system (e.g., "Session 1 Chat 1", "Session 1 Chat 2")

Quick copy reference - Allow copying a conversation reference to paste in new chats

Alternative Solutions

Manually describing past work in full sentences each time
Searching through JSONL conversation files manually
Using /compact (creates summaries but doesn't solve discoverability)

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

Instead of saying "Remember when we fixed the upload review modal to show all client data and pre-check only selected episode rows?" I could say "In Chat 5 (MHR Upload Modal Fix)..." - much faster and clearer.

Additional Context

This would make multi-session projects much easier to manage and reference across conversations.