List organization users

Retrieve all users belonging to a specific organization.

This endpoint returns a complete list of users within an organization, including the organization name for each user. Use this to manage organization membership, audit user access, or populate organization user interfaces.

Context: - Returns users regardless of their active/inactive status - Includes organization name in each user response for convenience - Users are ordered by creation date (newest first) - Each user includes full profile information and role - Organization must exist (404 if not found) - No pagination implemented yet (loads all users in memory)

Behavior: 1. Validates organization exists by ID 2. Queries all users with matching organization_id 3. Joins with organization table to include organization_name 4. Orders results by created_at descending 5. Returns complete user list with organization details Performance Notes: - Current implementation loads all users in memory - Suitable for organizations with < 1000 users - For larger organizations, pagination should be added (see TODOs.md) - Database query includes JOIN with organization table

Use Cases: - Display organization members in admin dashboard - Generate user access reports for specific organization - Audit which users have access to organization resources - Populate user selection dropdowns filtered by organization - Export organization user lists for compliance

Related Endpoints: - POST /admin/organizations/{id}/users - Add user to organization - GET /admin/organizations/{id}/users/count - Get user count only - GET /admin/users - List all users across organizations - GET /admin/users/{user_id} - Get individual user details