I'd like to propose a new feature for Lumo that enables access to chat histories without an internet connection – similar to the "Make available offline" function in Proton Drive.

Use Case: Users want to read and search through specific chats or project histories while offline (e.g., on a plane, in areas with poor connectivity, or for privacy reasons). Currently, Lumo is only usable online, which limits access to your own conversation data.

Proposed Features:

1. Offline toggle for chats:
   Like in Proton Drive, users should be able to mark individual chats (or entire projects) with a toggle as "Available offline." These would then be stored locally on the device, fully encrypted.

2. Two export modes:

• Full-text mode: The complete chat history is made readable offline (including all details and discussion threads).
• Summary mode: Users can select multiple chats to generate a compact, Lumo-created summary available offline.

1. Local search with navigation:

A full search within the offline-saved chats that:

• Highlights found terms in color.
• Allows navigating up/down between search results.
• Works entirely without internet (indexing happens locally).

Why this is valuable:

• Increases the practical usability of Lumo in situations without internet.
• Provides continuity in long-term projects and conversations, even offline.
• Leverages proven Proton principles (encrypted local storage) and extends them to chat data.
• Universally useful – not limited to specific use cases but beneficial for anyone who wants to work flexibly.

Technical Feasibility: The infrastructure for encrypted local storage already exists in Proton Drive. Extending this to chat data would be a logical evolution. Local search is technically achievable since the text resides on the device after download.