BUILD: 1.0.2-dev4 - Admin Upgrade UX + Pro Purchase Prep

Punchline:
Nothing should break. Only the new feature should change.

What this build adds:
- clearer wp-admin dashboard testing instructions
- customer purchase-path summary
- free/pro detection source status
- stronger upgrade/support links

What to test:
- dashboard loads and shows current mode clearly
- free mode still limits extra CAD widgets after the first 2
- pro addon allows unlimited CAD widgets
- existing widget output remains unchanged

Visible change:
Yes, in wp-admin.

Should remain unchanged:
- CAD Text widget output
- CAD Dominance widget output
- Title Color control
- Alignment controls
- Dominance logic


[1.0.2-dev5] Branding + Naming Finalization
- Free plugin name updated to: WCxE - Custom Asset Display - FREE
- Plugin dashboard/admin menu label updated to: WCxE - CAD
- Reserved professional final build name: WCxE - Custom Asset Display - PRO
- No widget logic or premium framework behavior changed


1.0.2 Final
- Finalized FREE package branding and version number.
- Kept 2-widget free cap and Pro detection support.
- Added uninstall.php for cleaner WordPress removal flow.
