[BUG] /rename without args reports 'no conversation context' despite active conversation

Preflight Checklist

• [x] I have searched existing issues and this bug hasn't been reported yet
• [x] I can reproduce this bug consistently

Bug Description

/rename without arguments reports "Could not generate a name: no conversation context yet" even when there's an active conversation with substantial context.

Steps to Reproduce

1. Start a new Claude Code session
2. Have a multi-turn conversation (in my case: ~10 turns discussing skills, CLI commands, research)
3. Run /rename without arguments

Expected Behavior

Should auto-generate a session name from conversation context (feature added in v2.1.41 per #25455).

Actual Behavior

Could not generate a name: no conversation context yet. Usage: /rename <name>

Environment

• Claude Code version: 2.1.50
• OS: macOS (Darwin 25.2.0)
• Shell: zsh

Additional Context

• Issue #25455 documents this feature as working in v2.1.41+
• The conversation had clear topics that could be used for naming (skills, CLI commands, /rename functionality)
• Possibly the context check is looking at the wrong thing, or there's a race condition

Related Issues

• #25455 (docs issue about this feature)
• #15762 (original feature request)