Feature Request: Add output-style option to slash commands

Feature Request

Problem

Currently, slash commands cannot be associated with a specific output style. Users must manually switch output styles after invoking a command, which adds friction to the workflow.

Proposed Solution

Add an optional output-style property to the slash command frontmatter:

---
description: Analyze code structure
output-style: bullet-points
---

Analyze the following code and provide insights...

Available styles

• ultra-concise
• bullet-points
• markdown-focused
• table-based
• yaml-structured
• html-structured

Use Cases

• /commit → ultra-concise (just the commit message)
• /review → markdown-focused for detailed code reviews
• /debug → bullet-points for quick scanning
• /explain → table-based for structured comparisons

Benefits

• Reduces manual steps in workflows
• Ensures consistent output for specific tasks
• Improves plugin/skill UX by allowing authors to define optimal output formats

Additional Context

Output styles are already supported via hooks/settings. This feature would simply allow slash commands to specify their preferred style declaratively in the frontmatter.