feat: manage bat and Claude Code configs; add --unlink mode

- New managed configs: .config/bat (ANSI theme so bat follows the
  terminal palette) and .claude/settings.json, with a .gitignore guard
  so only settings.json under .claude/ is trackable.
- dotfiles.sh: drive linking from a single link map and add
  unlink_dotfiles; install.sh grows --unlink to cleanly remove every
  symlink pointing into the repo.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.claude/settings.json

@@ -0,0 +1,7 @@
+{
+  "effortLevel": "medium",
+  "tui": "fullscreen",
+  "skipDangerousModePermissionPrompt": true,
+  "theme": "dark",
+  "model": "claude-fable-5[1m]"
+}

.config/bat/config

@@ -0,0 +1,5 @@
+# Follow the terminal's ANSI palette so bat matches the active Kanagawa
+# variant instead of shipping its own colorscheme.
+--theme="ansi"
+--style="numbers,changes,header"
+--italic-text=always

.gitignore

@@ -16,6 +16,7 @@ nvim.log
 
 # Track only the managed application configurations.
 .config/*
+!.config/bat/
 !.config/nvim/
 !.config/lazygit/
 !.config/starship/
@@ -34,3 +35,7 @@ nvim.log
 # Track only the ssh client config — never keys or anything else.
 .ssh/*
 !.ssh/config
+
+# Track only Claude Code settings — never history, sessions, or caches.
+.claude/*
+!.claude/settings.json

install/install.sh

@@ -15,6 +15,7 @@
 #   install/install.sh                  Full install
 #   install/install.sh --packages-only  Only packages/tools (apt + brew)
 #   install/install.sh --dotfiles-only  Only link dotfiles + tpm/nvm + chsh
+#   install/install.sh --unlink         Remove symlinks pointing into this repo
 #   install/install.sh --help
 
 set -eEo pipefail
@@ -28,7 +29,7 @@ source "$SCRIPT_DIR/lib/fonts.sh"
 source "$SCRIPT_DIR/lib/dotfiles.sh"
 
 usage() {
-  sed -n '2,18p' "${BASH_SOURCE[0]}" | sed 's/^# \{0,1\}//'
+  sed -n '2,19p' "${BASH_SOURCE[0]}" | sed 's/^# \{0,1\}//'
 }
 
 MODE=all
@@ -36,6 +37,7 @@ for arg in "$@"; do
   case $arg in
     --packages-only) MODE=packages ;;
     --dotfiles-only) MODE=dotfiles ;;
+    --unlink) MODE="unlink" ;;
     -h | --help)
       usage
       exit 0
@@ -53,6 +55,12 @@ preflight() {
 }
 
 main() {
+  # Unlinking only removes symlinks; skip preflight and the closing hints.
+  if [[ $MODE == unlink ]]; then
+    unlink_dotfiles
+    return
+  fi
+
   preflight
 
   case $MODE in

install/lib/dotfiles.sh

@@ -1,20 +1,46 @@
 #!/bin/bash
 # Symlink the dotfiles into ~ and ~/.config; switch login shell to zsh.
 
+# Each entry: "<repo-relative source>|<absolute destination>".
+# Drives both link_dotfiles and unlink_dotfiles — add new links here.
+dotfile_links() {
+  cat <<EOF
+.config/nvim|$HOME/.config/nvim
+.config/tmux|$HOME/.config/tmux
+.config/starship|$HOME/.config/starship
+.config/lazygit|$HOME/.config/lazygit
+.config/wezterm|$HOME/.config/wezterm
+.config/bat|$HOME/.config/bat
+.config/.ideavimrc|$HOME/.ideavimrc
+.zshrc|$HOME/.zshrc
+.gitconfig|$HOME/.gitconfig
+.ssh/config|$HOME/.ssh/config
+.claude/settings.json|$HOME/.claude/settings.json
+bin/dotfiles-apply-theme|$HOME/.local/bin/dotfiles-apply-theme
+EOF
+}
+
 link_dotfiles() {
   info "Linking dotfiles from $DOTFILES_DIR..."
-  backup_and_link "$DOTFILES_DIR/.config/nvim" "$HOME/.config/nvim"
-  backup_and_link "$DOTFILES_DIR/.config/tmux" "$HOME/.config/tmux"
-  backup_and_link "$DOTFILES_DIR/.config/starship" "$HOME/.config/starship"
-  backup_and_link "$DOTFILES_DIR/.config/lazygit" "$HOME/.config/lazygit"
-  backup_and_link "$DOTFILES_DIR/.config/wezterm" "$HOME/.config/wezterm"
-  backup_and_link "$DOTFILES_DIR/.config/.ideavimrc" "$HOME/.ideavimrc"
-  backup_and_link "$DOTFILES_DIR/.zshrc" "$HOME/.zshrc"
-  backup_and_link "$DOTFILES_DIR/.gitconfig" "$HOME/.gitconfig"
   mkdir -p "$HOME/.ssh"
   chmod 700 "$HOME/.ssh"
-  backup_and_link "$DOTFILES_DIR/.ssh/config" "$HOME/.ssh/config"
+  local entry
-  backup_and_link "$DOTFILES_DIR/bin/dotfiles-apply-theme" "$HOME/.local/bin/dotfiles-apply-theme"
+  while IFS= read -r entry; do
+    backup_and_link "$DOTFILES_DIR/${entry%%|*}" "${entry#*|}"
+  done < <(dotfile_links)
+}
+
+unlink_dotfiles() {
+  info "Removing symlinks that point into $DOTFILES_DIR..."
+  local entry dest
+  while IFS= read -r entry; do
+    dest="${entry#*|}"
+    if [[ -L $dest && $(readlink "$dest") == "$DOTFILES_DIR"/* ]]; then
+      rm "$dest"
+      info "Unlinked $dest"
+    fi
+  done < <(dotfile_links)
+  info "Any .pre-install.* backups were left in place; restore them manually."
 }
 
 set_zsh_as_shell() {