🔧 chore: extend CORS origins and update todo theme

- Add ports 5187-5190 to CORS origins for future apps
- Change todo app default theme from amethyst to ocean

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

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

apps/todo/apps/web/src/lib/stores/theme.ts

@@ -3,5 +3,5 @@ import { createThemeStore } from '@manacore/shared-theme';
 // Create theme store with Todo's primary color (purple/violet)
 export const theme = createThemeStore({
 	appId: 'todo',
-	defaultVariant: 'amethyst',
+	defaultVariant: 'ocean',
 });