CLAUDE.md Flat Display Mode (Infrastructure)

What: Alternative compact display format for CLAUDE.md sources.

Details:

• Adds flat parameter to CLAUDE.md display component
• When enabled, shows entries inline: user (.claude/CLAUDE.md), project (CLAUDE.md)
• Traditional vertical tree view preserved as default
• Infrastructure added but not yet activated in UI
• Prepares for future compact display options in constrained spaces
• Evidence: n$0({ context, flat }) at line 402096, flat rendering at lines 402107-402123