[BUG] Desktop app (Windows, Store build), Code tab: dictated text is never displayed in the message box, from the built-in mic or Windows voice typing, though the sent message is complete

What happens: In the Code tab's message box, dictated text is not shown at all. This applies to the app's own microphone button and equally to Windows voice typing (Win+H) into the same box. The text is captured correctly: sending the message delivers the full dictated text. The user works by voice all day and cannot review a sentence before sending.

Regression: the built-in mic button worked normally for months, showing dictated text, and stopped after a recent update. Prompt suggestions are off; switching light/dark theme makes no difference. Fully restarting the app and logging out and back in do not fix it.

Versions: Claude desktop (Microsoft Store/MSIX) 2.37337.1.0; Code tab Claude Code 2.1.210; Windows 11 Home build 26200.

Unconfirmed: whether typed keyboard text renders normally, and whether Ctrl+A shows a highlight over the seemingly empty box.

Related reports on neighbouring faults: #100992 (Windows, built-in mic, no live text), #101323 (macOS, text only on stop), #93170 (MSIX build, mic produced no text), #71953 (Win+H into the extension's input).