docs: update JumpCloud SSO setup instructions

[msukkari]

Updates JumpCloud OIDC provider documentation to clarify two critical setup requirements based on user feedback:

• Specifies that the Token Endpoint Authentication Method must be set to client_secret_basic (JumpCloud defaults to client_secret_post)
• Clarifies that AUTH_SECRET must be explicitly set for SSO to work reliably across restarts

These changes address setup issues users encountered during initial JumpCloud SSO configuration.

Summary by CodeRabbit

• Documentation
  • Updated JumpCloud Single Sign-On setup instructions to require Token Endpoint Authentication Method configuration set to client_secret_basic, clarifying this differs from JumpCloud's default setting
  • Added requirement to explicitly set the AUTH_SECRET environment variable for SSO reliability, including example command for generating the secret

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 779193ee-a468-42bf-874f-70cd82e3d4fa

📥 Commits

Reviewing files that changed from the base of the PR and between 24508eb and e0f53d3.

📒 Files selected for processing (2)

• CHANGELOG.md
• docs/docs/configuration/idp.mdx

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Walkthrough

Documentation updates to JumpCloud OIDC setup instructions clarifying Token Endpoint Authentication Method configuration (client_secret_basic) and mandating explicit AUTH_SECRET environment variable configuration. CHANGELOG entry added documenting these clarifications.

Changes

Cohort / File(s)	Summary
JumpCloud SSO Documentation CHANGELOG.md, docs/docs/configuration/idp.mdx	Updated JumpCloud SSO configuration documentation to enforce Token Endpoint Authentication Method as client_secret_basic and require explicit AUTH_SECRET environment variable setup with generation guidance.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• feat: add JumpCloud as identity provider for SSO #997: Main JumpCloud SSO feature documentation that these clarifications directly extend with additional configuration requirements and environment variable guidance.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch msukkari/jc-sso-docs-fix

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