Update CLAUDE.md for GitBulter workflow compatibility (#489)

Author: Kyle-Ye

CLAUDE.md

@@ -124,6 +124,43 @@ The Package.swift heavily uses environment variables for conditional compilation
 - Library evolution mode generates .swiftinterface files
 - Various private framework integrations can be toggled
 
+## Git and GitHub Workflow
+
+**IMPORTANT: This project uses GitBulter for version control management**
+
+### Critical Git Rules
+- **NEVER change branches** - The user manages branches through GitBulter
+- **NEVER run git commit commands** - The user commits through GitBulter GUI
+- **ALWAYS create pull requests** using `gh pr create` with the exact branch specified by the user
+- **DO NOT switch branches** when creating pull requests
+
+### Commit Workflow
+When asked to commit changes:
+1. **Generate a commit message** and provide it to the user
+2. **List the files to be committed** (specify if not all files)
+3. **Let the user commit through GitBulter GUI** - do not run git commit commands
+4. Wait for user confirmation before proceeding with any PR creation
+
+Example response when asked to commit:
+```
+Here's the commit message for you to use in GitBulter:
+
+"Add feature X to improve Y
+
+- Implemented new functionality
+- Updated tests
+- Fixed related issues"
+
+Files to commit:
+- src/feature.swift
+- tests/feature_test.swift
+```
+
+### Pull Request Workflow
+1. Only create PR after user confirms the commit is done
+2. Use `gh pr create` from the specified branch
+3. Do not change HEAD or switch branches during PR creation
+
 ## Important Notes
 
 - This project uses private Apple APIs and frameworks - NOT for App Store distribution