Support custom/themeable spinner status words

Feature request

Claude Code shows a random whimsical present-participle verb next to the spinner while working (e.g. "Pontificating…", "Noodling…", "Percolating…"). This word list is currently hardcoded in the compiled CLI with no override hook.

Requesting a supported way to customize/theme this list, e.g. via a settings.json key like:

{
  "spinnerWords": ["Compiling", "Rendering", "Whatever you want here"]
}

Use case: purely for fun/personalization (e.g. reskinning to a theme), but could also help with localization or brand consistency for teams running Claude Code in custom environments.

Currently there's no settings.json key, env var, config file, or plugin hook for this — confirmed via docs search. Would love to see it become a supported customization point rather than requiring binary patching.