Make messages in Show Transcript copy-able

[pj-mathematician]

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name: Feature Added
about: Makes individual messages in the transcript selectable

Summary of Changes

Enable text selection in transcript messages for improved user experience

• Added text selection capability to STT (Speech-to-Text) messages: Modified the .stt-message CSS class in SttView.js to include user-select: text and cursor: text properties, allowing users to click and drag to select transcribed text
• Enhanced copy functionality: Users can now manually select and copy specific portions of transcript text using standard text selection methods (click and drag, Ctrl+C/Cmd+C)

Technical details:

• Updated SttView.js: Added user-select: text and cursor: text to .stt-message CSS rule

User impact:

• Users can now select and copy individual words, phrases, or entire messages from the transcript interface
• Improves accessibility and usability for users who need to reference or share specific portions of transcribed content
• Maintains existing copy-all functionality while adding granular text selection

Related Issue

• Closes [FEAT] Make messages in Show Transcript copy-able #135

Please replace XXX with the issue number that this pull request resolves. If it does not resolve a specific issue, please explain why this change is needed.

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