Migrate app.config to appsettings.json with Microsoft.Extensions.Configuration

.github/upgrades/execution-log.md

@@ -94,3 +94,23 @@ Status: Complete
 ### Outcome
 Success - Solution builds with 0 errors on .NET 10.0.
 
+
+## [2026-03-31 21:54] TASK-007: Final Verification and Commit
+
+Status: Complete
+
+- **Verified**: 
+  - Project targets net10.0-windows ✅
+  - Project uses SDK-style format (Microsoft.NET.Sdk) ✅
+  - UseWPF enabled ✅
+  - Microsoft.Data.SqlClient 7.0.0 present ✅
+  - System.Configuration.ConfigurationManager 10.0.5 present ✅
+  - Zero remaining System.Data.SqlClient references ✅
+  - Framework-included packages removed ✅
+  - Solution builds with 0 errors ✅
+- **Commits**: cfb29cc: "Upgrade BettingPredictor from .NET Framework 4.8.1 to .NET 10.0"
+- **Files Modified**: 24 files (211 insertions, 424 deletions)
+
+### Outcome
+Success - All success criteria verified, changes committed on upgrade-to-NET8 branch.
+