chore(docs): move local rules to main CLAUDE.md

- Add "No co-authors" rule (#9)
- Add "No generated by statements" rule (#10)
- Remove CLAUDE.local.md (rules now in main file)

Author: CalvinAllen

CLAUDE.md

@@ -14,6 +14,8 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 6. **Working an issue** - Always create a new branch from an updated main branch
 7. **Check branch status before pushing** - Verify the remote tracking branch still exists. If a PR was merged/deleted, create a new branch from main instead
 8. **Microsoft coding guidelines** - Follow [Microsoft C# coding conventions](https://learn.microsoft.com/en-us/dotnet/csharp/fundamentals/coding-style/coding-conventions) and [.NET library design guidelines](https://learn.microsoft.com/en-us/dotnet/standard/design-guidelines/)
+9. **No co-authors** - Do not add any co-author information on commits or pull requests
+10. **No "generated by" statements** - Do not add generated-by statements on pull requests
 
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