[FEATURE] Add --export flag for auto-exporting conversations

[jwesleye]

Feature Description

Automatically export conversation to file on exit in various formats (markdown, JSON, HTML).

Problem/Motivation

I manually copy-paste important conversations. An automatic export would save time and ensure I don't lose valuable interactions.

Proposed Solution

chat_loop myagent --export markdown
# On exit, saves to: ~/chat_exports/myagent_2025-10-10.md

chat_loop myagent --export json
# Structured export with metadata

Benefits

• Keep records of important conversations
• Share conversations with team
• Audit trail for production agents
• Could integrate with note-taking systems

Priority

• Critical
• High
• Medium
• Low

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity.
It will be closed in 14 days if no further activity occurs.

If this issue is still relevant, please:

• Comment to keep it open
• Remove the "status: stale" label
• Provide additional information or updates

Thank you for your contributions!

[jwesleye]

✅ Already Implemented

This feature is fully implemented through the save conversation system!

Current Implementation

Auto-save on exit:

# In ~/.chatrc
features:
  auto_save: true  # Automatically saves on exit (default: enabled)

Manual save during conversation:

You: save
# Saves conversation to ~/.agent-conversations/

You: save my-project-discussion
# Creates named snapshot

Dual export format:

• Markdown (.md) - Human-readable with formatting
• JSON (.json) - Machine-readable with full metadata

Export locations:

~/.agent-conversations/
  AgentName_20251229_143022.md   # Markdown export
  AgentName_20251229_143022.json # JSON export

Features Included

• ✅ Auto-export on exit (configurable)
• ✅ Manual export during conversation
• ✅ Multiple formats (Markdown + JSON)
• ✅ Named exports with custom identifiers
• ✅ Timestamps and metadata included
• ✅ Configurable save location

Documentation

See README.md "Session Management" section for full details.

Closing as completed - all requested functionality exists!