Exclude some apis from api reference docs

[chiragjn]

Note

Low Risk
Metadata-only OpenAPI/Fern annotations with no server handler or contract changes; main follow-up is regenerating SDKs/docs if consumers relied on old camelCase group names.

Overview
Marks a set of OpenAPI operations with x-excluded: true so they drop out of the public API reference while remaining in the spec. Covered areas include auth (login/callback/logout/me), capabilities, catalog discovery endpoints, MCP OAuth callback, MCP authorize / disconnect flows, and list MCP server tools.

Fern SDK grouping is normalized from camelCase to snake_case (mcp_servers, model_providers, sandbox_providers) across route definitions and the generated OpenAPI copies in docs/ and .github/fern/.

Two operation summaries are clarified: list models is labeled “List models for chat” (composer-facing list vs settings).

^{Reviewed by Cursor Bugbot for commit b7f8467. Bugbot is set up for automated code reviews on this repo. Configure here.}

[changeset-bot]

⚠️ No Changeset found

Latest commit: b7f8467

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[cursor]

Cursor Bugbot has reviewed your changes using default effort and found 1 potential issue.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit b7f8467. Configure here.}

[bhaveshpatel640]

looks good