[Enhancement]: 增加 JWKS 支持

[wuyukai0403]

Problem or use case

试图接入 Matrix Synapse，但是 Synapse 要求在使用 openid scope 时必须有 jwks_uri 配置

Proposed solution

增加 JSON Web Key Set (JWKS) 支持，并在 /.well-known/openid-configuration 中返回 jwks_uri 字段

Alternatives considered

No response

Scope and compatibility

No response

Self-check

• I searched existing issues and did not find a duplicate.
• I confirmed this is not already supported by existing commands or configuration.
• I described the use case and proposed behavior clearly.
• I considered compatibility, permissions, and possible side effects.