Fix bugs across ecommerce store

[Xenon010101]

��## Summary
Fixed 5+ bugs in the ecommerce-store codebase:

Bug Fixes

1. Removed debug console.log in category page � leaked params and searchParams to browser console in production
2. Fixed SSR crash from window.location.href � window is undefined during SSR; moved to useEffect-guarded state
3. Fixed stale closure in share toggle � setChecker used closure variable instead of updater parameter, causing incorrect state toggling
4. Removed production console.logs from share handler � success/log messages leaked to console
5. Removed commented-out console.log � cleaned up dead code