[FEATURE] Add --max-turns flag for automatic session limits

[jwesleye]

Feature Description

Automatically stop session after a maximum number of conversation turns.

Problem/Motivation

For unattended or automated sessions, need a way to prevent infinite loops or runaway conversations.

Proposed Solution

chat_loop myagent --max-turns 10

# After 10 queries/responses:
# ⚠️ Maximum turns reached (10/10)
# Session ending gracefully...

Benefits

• Safety for automated sessions
• Prevent infinite loops
• Controlled testing
• Pairs well with --budget for dual limits

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.

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Thank you for your contributions!

[jwesleye]

Closing as not planned.

Automatic session limits don't align well with the interactive nature of this CLI tool. Users should control when to end sessions rather than having artificial turn limits.

Alternative approaches:

• Use Ctrl+C or 'exit' command to end session when done
• Session management (save/resume) for long-running tasks
• Context compaction ([FEATURE] Conversation compaction to manage context limits #48) to manage long conversations

Thank you for the suggestion!