[FEATURE] Add --resume flag to continue last session

[jwesleye]

Feature Description

Resume your last chat session with conversation history preserved.

Problem/Motivation

When working on extended tasks, I have to start fresh each time I restart chat_loop, losing context and previous conversation flow.

Proposed Solution

chat_loop myagent --resume
# Picks up where you left off

Could store recent sessions in ~/.chat_sessions/ with timestamps.

Benefits

• Maintains context across sessions
• Useful for multi-day debugging or exploration
• Could pair with --save-session for named sessions

Priority

• Critical
• High
• Medium
• Low

[github-actions]

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[github-actions]

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Thank you for understanding!

[jwesleye]

✅ Feature Implemented

This feature has been fully implemented! The chat loop now includes comprehensive session management and conversation saving.

Implemented Features

Session Saving:

• save command during conversation - manually save anytime
• Auto-save on exit (configurable via features.auto_save in config)
• User choice on each save: update current session OR create new snapshot
• Save confirmation with file paths, query count, and token usage
• Dual format: JSON (for resume) + Markdown (for reading)

Session Resuming:

• --resume flag to resume last session
• --resume <number> to resume specific session by number
• --resume <session_id> to resume by full session ID
• sessions command to list all saved sessions
• resume <number> command within chat to switch sessions
• Full context restoration with conversation history

Session Management:

• Sessions saved to ~/.agent-conversations/ (configurable)
• Secure file permissions (0600)
• Session search and filtering
• Session metadata (timestamp, agent name, query count, cost)

Usage Examples

# Auto-save on exit (default enabled)
chat_loop myagent

# Manual save during conversation
You: save
You: save my-project-discussion

# Resume last session
chat_loop myagent --resume

# Resume specific session
chat_loop myagent --resume 1

# List sessions
chat_loop myagent
You: sessions

# Resume from within chat
You: resume 2

Configuration

# In ~/.chatrc
features:
  auto_save: true  # Enable auto-save on exit

paths:
  save_location: ~/agent-conversations  # Where sessions are saved

This feature was implemented in version 1.3.0 and enhanced in subsequent releases.

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

Closing as completed.