• Merge pull request #526 from kaitranntt/kai/feat/519-cursor-auth-module
• fix(cursor): address third-round review feedback for auth module
• fix(cursor): address second-round review feedback for auth module
• fix(cursor): address remaining review items in auth module
• fix(cursor): address code review feedback on auth module
• fix(cursor): harden auth security and add token expiry warning
• feat(cursor): add auth module with SQLite auto-detect and types