feat(tools): add claude-commit AI-powered git commit tool

Implemented a comprehensive AI-powered commit message generator using Claude that:
- Automatically generates Conventional Commit formatted messages
- Analyzes git diff to create context-aware commit messages
- Works globally across all git repositories with 'git cc' command
- Supports multi-computer setup through portable dotfiles

Major changes:
- Added global claude-commit script with git aliases (git cc, git smart-commit)
- Created organized documentation in docs/tools/claude-commit/
- Included portable dotfiles structure for easy multi-machine deployment
- Updated README with TLDR Node.js quickstart section featuring all Brainy capabilities
- Moved documentation section to bottom of README for better flow
- Added CLAUDE.md with project-specific instructions for Claude Code

The tool eliminates manual commit message writing by leveraging AI to understand
code changes and generate properly formatted, meaningful commit messages that
follow the Conventional Commits specification.

docs/tools/claude-commit/README.md

@@ -0,0 +1,128 @@
+# Claude Commit - AI-Powered Git Commits
+
+Automatically generate Conventional Commit messages using Claude AI by analyzing your git diff.
+
+## 🚀 Quick Setup
+
+### One-Line Install (Simplest)
+
+On any computer, just run:
+
+```bash
+# Download and run the setup script
+curl -sSL https://raw.githubusercontent.com/soulcraft-research/brainy/main/docs/tools/claude-commit/setup.sh | bash
+```
+
+### Manual Install
+
+If you have the brainy repo cloned:
+
+```bash
+cd ~/Projects/brainy/docs/tools/claude-commit
+./setup.sh
+```
+
+### Using Dotfiles (For Multiple Machines)
+
+1. **First time:** Create your dotfiles repository
+   ```bash
+   # Copy the dotfiles folder from brainy to a new repo
+   cp -r ~/Projects/brainy/docs/tools/claude-commit/dotfiles ~/Projects/my-dotfiles
+   cd ~/Projects/my-dotfiles
+   git init
+   git add .
+   git commit -m "feat: add claude-commit dotfiles"
+   # Create a GitHub repo and push
+   ```
+
+2. **On any new computer:**
+   ```bash
+   # One-line install from your dotfiles
+   curl -sSL https://raw.githubusercontent.com/yourusername/my-dotfiles/main/install.sh | bash
+   ```
+
+## 📁 What Gets Installed
+
+- `~/.local/bin/claude-commit` - The main script
+- Git aliases: `git cc` and `git smart-commit`
+- PATH update (if needed)
+
+## 🔄 Keeping Computers in Sync
+
+### Manual Sync
+
+On any computer, update to latest version:
+
+```bash
+# From brainy repo
+curl -sSL https://raw.githubusercontent.com/yourusername/brainy/main/dotfiles/bin/claude-commit > ~/.local/bin/claude-commit
+chmod +x ~/.local/bin/claude-commit
+```
+
+### Automatic Sync with Dotfiles
+
+If you set up a dotfiles repo:
+
+```bash
+cd ~/Projects/my-dotfiles
+git pull
+./install.sh
+```
+
+## 💻 Per-Computer Setup Checklist
+
+When setting up a new computer:
+
+- [ ] Install Claude CLI (`claude` command must work)
+- [ ] Run the setup script
+- [ ] Restart terminal or `source ~/.bashrc`
+- [ ] Test with `git cc` in any repo
+
+## 🧪 Testing
+
+After setup, test in any git repository:
+
+```bash
+# Make a change to any file
+echo "test" >> README.md
+
+# Use claude to commit
+git cc
+```
+
+## 🔧 Troubleshooting
+
+### "command not found: claude"
+- Install Claude CLI from https://claude.ai/code
+
+### "command not found: git cc"
+- Run: `source ~/.bashrc` (or `~/.zshrc` for Zsh)
+- Verify: `ls -la ~/.local/bin/claude-commit`
+
+### Script not generating commits
+- Check Claude CLI works: `claude --version`
+- Ensure you have changes: `git status`
+
+## 📝 Files in This Setup
+
+```
+brainy/
+├── setup-claude-commit.sh      # Standalone installer
+├── CLAUDE_COMMIT_SETUP.md      # This file
+└── dotfiles/                    # Portable dotfiles
+    ├── README.md               # Dotfiles documentation
+    ├── install.sh              # Master installer
+    ├── setup-claude-commit.sh  # Claude commit installer
+    └── bin/
+        └── claude-commit       # The actual script
+```
+
+## 🎯 Summary
+
+**For your laptop**, you have three options:
+
+1. **Quickest:** Run the setup script from brainy repo
+2. **Portable:** Create a dotfiles repo and install from there
+3. **Manual:** Copy the script directly to `~/.local/bin/`
+
+All methods give you the same `git cc` command that works in any git repository!