Add critical git workflow rules to CLAUDE.md

Added prominent warning section at top of file with:
- Mandatory branching workflow rules
- Step-by-step git commands
- Pre-commit checklist
- Strong language to prevent main branch commits

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

CLAUDE.md

@@ -2,6 +2,35 @@
 
 This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
 
+## ⚠️ CRITICAL RULES - READ FIRST
+
+### Git Workflow - ABSOLUTELY MANDATORY
+- **NEVER COMMIT DIRECTLY TO MAIN/MASTER BRANCH**
+- **ALWAYS CREATE FEATURE BRANCHES FOR ANY CHANGES**
+- **USE TEA CLI FOR GIT.DECO.SH REPOSITORY**
+
+### Required Git Workflow
+```bash
+# STEP 1: ALWAYS create a feature branch first
+git checkout -b feature/brief-description
+
+# STEP 2: Make your changes and commit
+git add .
+git commit -m "Your commit message"
+
+# STEP 3: Push branch and create PR using tea cli
+git push -u origin feature/brief-description
+tea pr create
+```
+
+### Pre-Commit Checklist
+- [ ] Confirm you are NOT on main/master branch: `git branch --show-current`
+- [ ] Run tests: `npm test`
+- [ ] Run linting: `npm run lint`
+- [ ] Build succeeds: `npm run build`
+
+**VIOLATION OF THESE RULES IS UNACCEPTABLE**
+
 ## Development Commands
 
 ### Running the Application