Bump version to 0.8.5

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: rockfordlhotka

Directory.Build.props

@@ -9,7 +9,7 @@
     <!-- Version can be overridden from the command line: -p:Version=0.3.1
          AssemblyVersion and FileVersion are derived automatically by the SDK
          (prerelease suffixes like -beta001 are stripped for assembly versions). -->
-    <Version>0.8.4</Version>
+    <Version>0.8.5</Version>
   </PropertyGroup>
 
   <!-- NuGet package metadata (shared across all packable projects) -->