chore: sync configurable files from timewarp-architecture

[github-actions]

Summary

This PR automatically syncs configurable files from the parent TimeWarp Architecture repository to maintain consistency with organizational standards.

Files Synced

• Configuration files for .NET development
• Common development tools configuration
• Standard ignore patterns (merged with local additions)

Review Notes

• This is an automated sync from TimeWarpEngineering/timewarp-architecture
• Local customizations in synced files may have been preserved or updated
• Please review changes before merging

Test Plan

• Verify build still works after sync
• Check that local customizations are preserved
• Ensure no sensitive information was inadvertently synced

🤖 Generated with Claude Code

[StevenTCramer]

This PR is obsolete. Parent-template file sync has been removed so this repo can no longer spawn sync-configurable-files PRs. See cleanup PR #34 (kanban 013). Closing without merge; leftover branch sync/configurable-files-1 can be deleted after that cleanup PR is merged.