feat: refresh generated OpenAPI spec snapshot

[github-actions]

OpenAPI snapshot refresh

Regenerated src/tools/generated/openapi.json from the live spec: 243 → 246 operations.

New operations exposed as MCP tools (3)

• GET /rbac/v1/customer-groups/{customerGroupId}/user-groups — List user groups assigned to a customer group
• PUT /rbac/v1/customer-groups/{customerGroupId}/user-groups/{userGroupId} — Assign a user group to a customer group
• DELETE /rbac/v1/customer-groups/{customerGroupId}/user-groups/{userGroupId} — Unassign a user group from a customer group

New operations excluded by policy (0)

None.

Removed operations (0)

None.

Renamed operationIds — same endpoint, new generated tool name (0)

None.

Review checklist: new exposed operations become MCP tools on the next release — confirm none of them should instead be added to src/tools/generated/excludedOperations.json. Removed operations disappear as tools; hand-written tools covering them will start failing and need cleanup. Renamed tools are breaking for anyone calling the old name — flag them in the release notes.