- Add X-specific user block functions to tools/blocks.py: - attach_x_user_blocks() for attaching user blocks by ID - detach_x_user_blocks() for detaching user blocks - x_user_note_append/replace/set/view() for block content management - Block format: x_user_<author_id> as requested - Add ensure_x_user_blocks_attached() to x.py: - Automatically creates and attaches user blocks for thread participants - Sets initial content with handle and name information - Integrates with existing thread processing - Update thread_to_yaml_string() to include author_id: - Enables agent to reference user IDs for block management - Maintains compatibility with existing YAML structure - Fix config loading issue: - Environment variable LETTA_API_KEY was overriding config file - Now properly uses void-x agent (agent-4f7cc732-36bc-4e55-a5fa-f5d12eec6c5c) - Successfully tested block creation and attachment 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>