CHUMANA SERVICELINK V3.7.5 — ITERATION 4.2.1 WORKSPACE HOTFIX

Purpose
- Lets an authorised Admin switch straight into Provider Invitations.
- Preserves the requested provider return page during workspace switching.
- Adds Provider Workspace access to the Admin header.
- Changes the Iteration 4.2 installer completion button to switch workspace correctly.

Deployment
1. Upload the PATCH ZIP into public_html/Chumanalive.
2. Extract and overwrite the three existing PHP files.
3. No database upgrade is required.
4. While logged in as Admin, open:
   workspace-switch.php?to=provider&return=provider/invitations.php

Security
- The Admin must already have provider capability.
- Existing provider approval checks remain active.
- No impersonation or approval bypass was added.
