[FEATURE] Allow spinner/status words to be displayed bilingually (English + local language)

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

Currently the spinner status words shown during processing ("Calculating...", "Creating...", "Doing...", "Thinking...", etc.) are hardcoded in English. Please add an option to display them bilingually — English followed by the local language in parentheses — e.g. Calculating... (계산 중...), Creating... (생성 중...).

Non-English-speaking users would understand the current activity at a glance while still seeing the original term.
Keeping the English term preserves familiarity for users who learned the tool in English and helps when sharing screenshots/logs across language boundaries.

Proposed Solution

A settings.json option such as "spinnerLocale": "ko" (or "en+ko") that toggles the bilingual display.
Locale could default to the system locale, with "en" keeping the current behavior.
Translations could ship for major locales (ko, ja, zh, es, fr, de, ...).

Alternative Solutions

A user-defined map in settings.json (e.g. "spinnerWords": { "Calculating": "계산 중" }) for full customization.

Priority

Medium - Would be very helpful

Feature Category

Other

Use Case Example

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Additional Context

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