Summary

Add a configuration option to customize how thinking/reasoning blocks are formatted per channel.

Problem

On Telegram, reasoning blocks are rendered in italics (_text_), which is hard to read — especially for longer reasoning. The TUI console shows them in green, which is much more visible.

Proposed Solution

Add a config option like:

{
  channels: {
    telegram: {
      thinkingFormat: "code"  // "italic" | "code" | "spoiler"
    }
  }
}

Or at agent level:

{
  agents: {
    defaults: {
      thinkingFormat: "code"
    }
  }
}

Use Cases

• code: Better readability on mobile (Telegram)
• spoiler: Collapse reasoning by default, expand on tap
• italic: Current default, works for short reasoning

Current Behavior

formatReasoningMessage() in pi-embedded-utils.js hardcodes italic formatting.

Environment

• OpenClaw 2026.2.1
• Channel: Telegram