docs: Add git conventions to CLAUDE.md

Author: ishansasika

CLAUDE.md

@@ -137,3 +137,25 @@ The app is configured for Firebase Hosting with automatic GitHub Actions deploym
 - `.css` - Stylesheets
 - `.js` - Config files (tailwind.config.js, postcss.config.js, eslint.config.js)
 - `.json` - Firebase and package configuration
+
+## Git Conventions
+
+### Commit Format
+```
+feat: Add <description>
+fix: Fix <description>
+docs: Update <description>
+```
+
+- Use lowercase after the prefix
+- Keep messages concise and descriptive
+
+### Branch Naming
+```
+release/v{version}-{short-description}
+```
+Example: `release/v4.1.0-neon-status-particle`
+
+### Important Rules
+- **Never add `Co-Authored-By: Claude` lines** to any commit messages or PR descriptions
+- **Never include AI attribution** in commits, PRs, or any git history