Add README with installation and usage instructions

README.md

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+# Dotfiles
+
+Personal configuration files managed with GNU Stow.
+
+## Contents
+
+- **tmux**: Terminal multiplexer configuration
+- **kitty**: Modern terminal emulator configuration
+- **nvim**: Neovim configuration (AstroNvim based)
+- **fish**: Fish shell configuration with Fisher plugins
+
+## Installation
+
+### Prerequisites
+
+```bash
+# Install Homebrew (if not installed)
+/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+
+# Install GNU Stow
+brew install stow
+```
+
+### Clone and Deploy
+
+```bash
+# Clone the repository
+git clone https://git.anvil.it.com/kaffa/dotfiles.git ~/dotfiles
+
+# Navigate to dotfiles directory
+cd ~/dotfiles
+
+# Deploy configurations (choose what you need)
+stow tmux    # Deploy tmux config
+stow kitty   # Deploy kitty config
+stow nvim    # Deploy nvim config
+stow fish    # Deploy fish config
+
+# Or deploy all at once
+stow tmux kitty nvim fish
+```
+
+## Management
+
+### Add new configuration
+
+```bash
+# Example: Adding a new tool configuration
+mkdir -p ~/dotfiles/toolname/.config/toolname
+cp -r ~/.config/toolname/* ~/dotfiles/toolname/.config/toolname/
+stow toolname
+```
+
+### Update existing configuration
+
+Configurations are symlinked, so any changes made to the actual config files will automatically be reflected in the repository. Just commit and push the changes:
+
+```bash
+cd ~/dotfiles
+git add .
+git commit -m "Update configurations"
+git push
+```
+
+### Remove configuration
+
+```bash
+# Unstow (remove symlinks)
+stow -D tmux
+
+# Or remove all
+stow -D tmux kitty nvim fish
+```
+
+## Structure
+
+```
+~/dotfiles/
+├── tmux/
+│   └── .tmux.conf
+├── kitty/
+│   └── .config/
+│       ├── kitty.conf
+│       └── dracula.conf
+├── nvim/
+│   └── .config/
+│       └── nvim/
+└── fish/
+    └── .config/
+        └── fish/
+```
+
+## Notes
+
+- Original configuration files are backed up to `~/backups/` before stowing
+- Use `stow -n <package>` to simulate what will happen without making changes
+- Use `stow -v <package>` for verbose output to see what's being linked