[Feature Request] Add chat platform-specific message formatting (Teams/Slack/Discord)

Bug Description
Feature request: rendering messages intended for copy-paste into MS Teams / Slack / Discord.

When I ask for "a Teams message" or "a Slack message", the response is typically formatted using markdown that the chat platform doesn't honor on paste:

• Blockquotes (>) come through as literal > characters
• Inline backticks (code) render as literal backticks
• Bold/italic markers (**, *) often paste as literal asterisks

Two suggestions:

1. Detect "Teams message" / "Slack message" / "Discord message" in the prompt and automatically format the body as plain text inside a fenced code block, with no inline markdown.
2. Or expose a built-in skill (e.g. /teams-message, /chat-message) that does the same.

Today I have to add this to my global CLAUDE.md to get reliable behavior — would be great as a default.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.128
• Feedback ID: beb6eeb1-ae6f-42f7-9500-cd5e18f0fd6b

Errors

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