[FEATURE] Allow customizing the animated thinking/status words

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

Claude Code shows "fun" animated status words while thinking (e.g., "Cogitating...", "Discombobulating...", "Flibbertigibbeting..."). It would be great to let users customize this word list.

Why:

1. It's a low-risk, fun personalization option
2. The word list is currently hardcoded in the compiled binary with no way to override it
3. Users who spend a lot of time in the CLI would enjoy making it their own
4. Sometimes I would rather not _flibbertigibbet_ and would rather Claude didn't either.
5. *@#$!

Proposed Solution

A config file like ~/.claude/thinking-words.json or a key in ~/.claude/settings.json:

{
  "thinkingWords": [
    "Cussing",
    "Swearing",
    "Drinking",
    "Fuming",
    "Into the void staring",
    "Career changing",
    "Goat farming"
  ]
}

If present, use the custom list instead of the built-in defaults. If absent, fall back to the current words.

Alternative Solutions

I tried monkey patching but even if it were javascript rather than binary it still would just be overwritten next update.

Priority

Low - Nice to have

Feature Category

Other

Use Case Example

1. I am writing code and / or interacting with claude
2. It keeps talking about how it is discombobulating
3. I would like to have it use less cutesy words
4. The don't have to be swears but sometimes... it would be nice

Additional Context

_No response_