Dear Lumo Team,
I'm the developer of @Voice Aloud Reader, a popular Android ebook/document reader app. I'm interested in integrating AI-powered book summarization features that respect user privacy - which makes Lumo an ideal solution.

Current Approach & Results: I've tested Lumo with book chapters (up to 100KB text) by manually copying/pasting content. The summarization quality and literary analysis are excellent - exactly what my users need for "remind me what happened" scenarios when returning to books after breaks, having questions to answer, discuss the book etc., but copy/paste workflow is far from perfect.

Feature Requests:
1. Intent.ACTION_SEND Support: Allow my app to send prompts + text/files directly to Lumo via Android's share mechanism. Ideally support both EXTRA_TEXT to insert the prompt, and at the same intent – optional EXTRA_STREAM to attach a text file.
2. Save Chat Intent: Optional ability to save completed chats to specified file paths (with user approval). If summarizing a book by chapters, this would serve to collect all the summaries in one file for future chats.
3. Alternative: API for Developers: Consider offering an API for app developers to integrate Lumo capabilities
o Ideally allow also user-controlled API keys (users create their own keys under their Lumo accounts/subscriptions for maximum privacy control) to avoid hassles with handling paid subscriptions in the app.

Benefits to Proton:
• Increased Lumo app adoption among my user base (currently about 500,000 active users per month), particularly if the intent mechanism works well – with API approach users would not necessarily install Lumo app and buy their own subscription plans.
• Showcases Lumo's privacy-first approach in a practical use case
• Demonstrates superior alternative to privacy-compromising AI services

Privacy Alignment: This integration would help users analyze their legitimately-owned ebooks while maintaining the privacy guarantees that make Lumo unique.
Would you consider implementing these features? I'm happy to provide technical details or discuss further.