Add lightly edited transcript and thought-provoking questions features

[joeldrotleff]

Summary

• Enhanced AI prompts to provide more useful transcript processing
• Added new "lightly edited transcript" card to replace raw transcript
• Added "Things to Think About" card with 2-3 thought-provoking questions
• Improved handling of edge cases (empty/short recordings)

Key Changes

Server Updates

• Added editedTranscript and thingsToThinkAbout fields to API response
• Created new AI prompts for generating edited transcripts and questions
• Enhanced edge case handling for empty/short recordings
• All AI generation happens in parallel for optimal performance

iOS App Updates

• Replaced raw transcript card with lightly edited version (markdown support)
• Added 4th card for thought-provoking questions
• Added purple-pink gradient theme for questions card
• Updated all data models and preview content

Prompt Engineering

• Comprehensive test cases for various transcript scenarios
• Promptfoo configurations for testing and validation
• Documentation of all prompt improvements

Test Plan

• Server formatting passes (deno fmt)
• iOS app builds successfully
• iOS formatting passes (make format)
• Test with real recordings to verify AI output quality
• Verify markdown rendering in edited transcript card
• Test edge cases (empty/short recordings)

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