Alright, I've made several updates based on feedback!

Cost Estimation

    - Shows (very rough) character count estimate (rounded to nearest thousand)
    - Displays approximate cost at $0.12 per thousand characters
    - Updates dynamically as selections change

Advanced Input Options

    - Added toggle between single thread URL and top 100 stories selection
    - Implemented multi-thread selection with checkboxes
    - Saves input mode preference to localStorage

Comment Limit Improvements

    - Changed to "All" as default with option for custom limit
    - Original post no longer counts against comment limit

Quote Formatting

    - Text with > is now properly recognized as quotes
    - Quotes are transformed with random introduction phrases
    - Adds "End of quote" with variations at the end of quoted text

Link Handling

    - Preserves shared links in expandable section at the bottom
    - Different random phrases for first, second, and multiple links
    - Links open in new tabs when clicked

Voice Matching

    - Matches commenter usernames to ElevenLabs voices if names match
    - Falls back to deterministic assignment if no match found

Error Handling & Recovery

    - Saves progress and allows resuming after errors
    - Shows "Retry" button with partial audio when errors occur
    - Audio generated so far is available for download

UI Improvements

    - Added tooltip with API key information
    - Persistent theme preferences via localStorage
    - Improved responsive design for mobile
    - the filename of the generated MP3 file matches the thread title