Agent Skills: Implement Status Bar Integration for Skill Counts

[NTaylorMullen]

Surface the presence of discovered skills in the CLI's persistent status area. This provides a constant but unobtrusive reminder to the user that specialized expertise is available for the current session.

Requirements:

• UI Integration: Update ContextSummaryDisplay.tsx to accept and display a skillCount prop.
• Data Flow: Modify Composer.tsx (or the relevant state provider) to retrieve the count of enabled skills from the SkillManager.
• Visual Consistency: Render the skill count alongside other context metrics (e.g., "2 open files | 3 skills") using pipe separators and secondary text colors.
• Adaptive Rendering: Ensure the "skills" segment is omitted entirely if zero skills are discovered.

Part of #15327