MCP `org_teams` removes a member, or just one of their roles #10154

MCP org_teams now has a remove_member action. It takes a user and an optional role. bun test test/mcp-orgteams.test.ts test/mcp-size.test.ts, bun x tsc --noEmit and bun scripts/gate.ts all passed before the push. I skipped keep_plan, so the issue has no plan.

• With role: only that role comes off, and the member stays on the team as a member.
• Without role: the member leaves the team.
• Errors: a bad role is bad_role. An unknown member, or a role the member doesn't hold, is not_found. last_owner is returned as-is, so the API's 409 maps to the same code.
• Access: the tool's existing gate applies, so an org owner with an admin-scope token. Anyone else gets not_found. The tool's doc string lists the new action.
• Same action as the API: it calls removeTeamMember, the same function the API's DELETE route calls. The "no such member" check is repeated in the tool rather than shared with the API route.
• Test: in test/mcp-orgteams.test.ts, an owner removes one role and the member keeps the others, then removes the member. It also checks a bad role, a repeat removal and a non-owner being refused.
• Docs: docs/features/team-roles.md lists the MCP action.
• Left out: I didn't refactor the API route to share the membership check.

I wasn't asked to open or merge the pull, and haven't.

Closes #10134

MCP org_teams now has a remove_member action. It takes a user and an optional role. bun test test/mcp-orgteams.test.ts test/mcp-size.test.ts, bun x tsc --noEmit and bun scripts/gate.ts all passed before the push. I skipped keep_plan, so the issue has no plan.

• With role: only that role comes off, and the member stays on the team as a member.
• Without role: the member leaves the team.
• Errors: a bad role is bad_role. An unknown member, or a role the member doesn't hold, is not_found. last_owner is returned as-is, so the API's 409 maps to the same code.
• Access: the tool's existing gate applies, so an org owner with an admin-scope token. Anyone else gets not_found. The tool's doc string lists the new action.
• Same action as the API: it calls removeTeamMember, the same function the API's DELETE route calls. The "no such member" check is repeated in the tool rather than shared with the API route.
• Test: in test/mcp-orgteams.test.ts, an owner removes one role and the member keeps the others, then removes the member. It also checks a bad role, a repeat removal and a non-owner being refused.
• Docs: docs/features/team-roles.md lists the MCP action.
• Left out: I didn't refactor the API route to share the membership check.

I wasn't asked to open or merge the pull, and haven't.

MCP org_teams has a new remove_member action. It takes a user and an optional role. The first push failed the check's "say how to try it on the preview" rule because no commit message had a Try: line. I added an empty commit carrying one and pushed. bun scripts/gate.ts printed no errors locally. I haven't seen the forge's re-run result.

• With role: only that role comes off, and the member stays on the team as a member.
• Without role: the member leaves the team.
• Errors: a bad role is bad_role. An unknown member, or a role the member doesn't hold, is not_found. The API's last_owner refusal comes through under the same code.
• Access: an org owner with an admin-scope token; anyone else gets not_found. The tool's doc string lists the action.
• Same action as the API: it calls removeTeamMember, the function the API's DELETE route calls. The "no such member" check is repeated in the tool rather than shared with the API route.
• Tests and docs: test/mcp-orgteams.test.ts removes one role, checks the member keeps the others, then removes the member. It also covers a bad role, a repeat removal and a non-owner being refused. docs/features/team-roles.md lists the MCP action.
• Left out: I didn't refactor the API route to share the membership check.

To try it on the preview: POST /mcp with tools/call org_teams {org, action: "remove_member", team, user, role: "reviewer"} and an admin-scope owner token. The member stays, as a member.