MDW Admin Documents v7 + Updater Completion Test

Adds:
- More document templates: Service Agreement, Project Proposal, Client Intake, Change Request, Maintenance Agreement, Hosting Setup Responsibility, Software License, Invoice, Pricing Guide.
- Document categories and searchable/filterable document library.
- Quick Access document cards.
- Back to Documents button polish.
- Updater version display: MDW Admin v0.7.0.
- Updater apply verification with completed/failed counts.

Protected by your updater:
- devworks-admin/config.php
- devworks-admin/data/
- devworks-admin/uploads/
- devworks-admin/updates/
- devworks-admin/tmp/
- vsadmin/
- clearchat/
- public-downloads/

Test flow:
1. Upload this ZIP in MDW Admin Updater.
2. Run Dry Run.
3. Apply Update.
4. Confirm Update Complete Successfully and MDW Admin version 0.7.0.
5. Open Documents and test the new document library.
