Major update to chat page with new conversation list, message thread view, and support for V2 end-to-end encrypted messaging using DIDs. Adds chat lock state, message sending, conversation deletion, and improved polling. Updates user API and types to include DID and chatPublicKey. Fixes race conditions in feed loading, adds message button to user profile, and improves crypto and identity hooks for better locked/unlocked state detection.
Introduces encrypted private key storage for nodes and users, updates chat message schema to support sender-side encryption, and adds supporting libraries and tests for cryptographic signing and identity unlock flows. Includes new database migrations, API route updates, and React components for identity unlock prompts.
Christopher