feat: rebrand application from Padel Pro to SmashPoint

Complete rename across all layers: UI branding, package names
(@smashpoint/web, @smashpoint/shared), infrastructure (Docker,
DB config), seed data, documentation, and logo/favicon.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pnpm-lock.yaml

@@ -14,7 +14,7 @@ importers:
 
   apps/web:
     dependencies:
-      '@padel-pro/shared':
+      '@smashpoint/shared':
         specifier: '*'
         version: link:../../packages/shared
       '@prisma/client':