Fix Activepieces branding with proper logo and text

- Change "Built with" to "Powered by" in ShowPoweredBy component
- Replace purple dot with actual Activepieces swirl logo in SVG
- Update favicon and logoIcon URLs to use SmoothSchedule branding
- Add light and dark mode versions of automation builder logo

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

activepieces-fork/packages/server/api/src/app/flags/theme.ts

@@ -67,6 +67,6 @@ export const defaultTheme = generateTheme({
     primaryColor: '#6e41e2',
     websiteName: 'Automation Builder',
     fullLogoUrl: 'https://smoothschedule.nyc3.digitaloceanspaces.com/static/images/automation-builder-logo-light.svg',
-    favIconUrl: 'https://cdn.activepieces.com/brand/favicon.ico',
-    logoIconUrl: 'https://cdn.activepieces.com/brand/logo.svg',
+    favIconUrl: 'https://smoothschedule.nyc3.digitaloceanspaces.com/static/images/logo-branding.png',
+    logoIconUrl: 'https://smoothschedule.nyc3.digitaloceanspaces.com/static/images/logo-branding.png',
 })