🔄 Sync main branch changes to net9

[arcenox]

🤖 Automated Branch Sync

This PR syncs recent changes from main branch to net9.

Changes Applied:

• ✅ Applied recent commits from main (using cherry-pick)
• ✅ Updated version numbers (10.x.x → 9.x.x)
• ✅ Updated target framework (net10.0 → net9.0)
• ✅ Preserved .csproj files from net9 branch
• ⏭️ Commits already in target branch were automatically excluded

Review Notes:

• All .csproj files maintain net9 configurations
• Directory.Build.props has been updated for net9 compatibility
• Ready for testing on net9 environment

---

Created automatically by branch sync workflow