Developed a comprehensive OpenID Connect integration guide for the authelia/authelia repository, enabling the AFFiNE application to securely implement single sign-on using Authelia as the OIDC provider. Focused on OAuth and identity management, the work established a repeatable integration path that reduces setup time and minimizes misconfiguration risks. The guide, written in Markdown, aligns with established documentation conventions and links directly to related issues for improved traceability and future maintenance. By documenting a secure, standards-based authentication flow, the contribution enhances deployment readiness and maintainability of authentication documentation, supporting security-focused development practices within the project’s identity management ecosystem.