b59b104bad
- Replaced nanoid and randomUUID with Snowflake ID generator across codebase for consistent distributed ID generation. - Created new Snowflake utility module in packages/utils with support for 64-bit distributed ID generation with configurable epoch, machine ID, and sequence numbers. - Updated session ID format documentation from nanoid to snowflake hex string format (16 hex characters). - Removed nanoid dependency from package.json as it is now replaced by internal Snowflake implementation.