Problem

Currently, reasoningLevel is stored per-session. New sessions default to off, requiring users to manually configure each channel/session.

Proposed Solution

Add global defaults in agent configuration:

agents:
  defaults:
    reasoningLevel: stream  # off | on | stream

New sessions would inherit this default. Per-session overrides via /reasoning would still work.

Settings Explained

reasoning - Controls thinking visibility (same as /reasoning):

• off: Thinking hidden from user
• on: Show thinking after completion
• stream: Stream thinking live as it happens

Benefits

• Consistent behavior across all channels (WhatsApp, Telegram, Discord, etc.)
• No need to manually configure each session
• Users can set-and-forget their preferred reasoning level

Current Workaround

Patching files to add defaults on session creation

This is basically the same as #1656. The issue was closed referencing an option that doesn't impact reasoning visibility (verbose mode).