[FEATURE] Mute annoying thinking synonyms

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The rotating thinking synonyms are distracting and reduce productivity. Please add an option to show a static 'Thinking...' or nothing at all.

Proposed Solution

The rotating thinking synonyms are distracting and reduce productivity. Please add an option to show a static 'Thinking...' or nothing at all.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_