[Docs] Add Five's user profile card to cloud/identity/users

[leecalcote]

Overview

The cloud/identity/users page has an existing <!-- TODO --> placeholder for Five's user profile. Replace it with a character card using the canonical Five profile defined in https://docs.layer5.io/cloud/about.

Tasks

• Remove the <!-- TODO --> comment block from content/en/cloud/identity/users/_index.md
• Add a {{< cardpane >}} character card for Five: name, role (Platform Engineer, User), org (Orbital Labs), plan (Team), illustration /images/five/1.svg
• Add a second card for Maya Chen as the Org Admin example
• Link both cards to /cloud/about for full cast reference

Reference

• Narrative: /cloud/about
• Spec: docs/superpowers/specs/2026-04-28-five-narrative-design.md
• Difficulty: Low