[lovyestar]

Flow history: keep what was heard beside the rewrite

Why

When Claude rewrites a dictation (clean-up, prompt mode, translation, speech level), only the rewrite is kept. If the rewrite is wrong, or you want the exact words you said, they are gone.

What

• When Claude changed the words, the history keeps the words as heard and shows them under the rewrite ("As heard").
• A second button copies the words as heard; the existing button still copies the rewrite.
• Dictations that went in untouched, and entries saved before this change, look exactly as they did (heard is optional, so the existing history.json still loads).
• Local only: it is stored in the same history file as the text, nothing new goes over the network.

Notes

• New strings: en, fr, ko, zh-Hant (the check requires zh-Hant); other languages fall back to English.
• Independent of the Korean speech level PR (feat(flow): choose the speech level of Korean text #951), but it is the safety net for it.

Test plan

• scripts/test-localization.py, scripts/test-flow-text.sh
• Build with no new warnings
• A rewritten dictation shows both texts and the extra copy button
• Each copy button copies the right text
• Older entries (saved before this change) still show as they did

Screenshots

The rewrite on top, the words as heard under it, and a second copy button: