refactor: trim configuration and drop unused plugins

- Merge sunbather dark/light into one background-aware color scheme
- Fold uninstall.sh into install.sh as a subcommand; drop clone logic
- Inline bash_tools/ helpers; remove fct and odict
- Remove TPM, tmux-sensible, and tmux-fuzzback; tmux has no plugins now
- Remove vim-repeat, vim-fugitive, vim-gitgutter, vim-tmux-navigator,
  and moonfly; everforest is the default dark theme
- Fetch vim-plug via git instead of curl; require git, not curl
- Guard termguicolors on Windows consoles without VT support and set
  nomore before the vimrc loads so headless installs cannot hang
- Fall back to sunbather when a color scheme fails to load, without
  overwriting the saved preference
- Append config/vim to runtimepath so netrw stops writing into the repo
- Fix .editorconfig Python indent; trim .gitignore; update CI and README

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NBfsAH6iJg9inkNLKq11YC

install.sh

@@ -2,17 +2,7 @@
 
 set -Eeuo pipefail
 
-readonly APP_NAME='dotfiles'
-readonly REPO_URI="${REPO_URI:-https://github.com/Donaldttt/dotfiles.git}"
-readonly REPO_BRANCH="${REPO_BRANCH:-main}"
-
-SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" 2>/dev/null && pwd -P || true)"
-if [[ -n "$SCRIPT_DIR" && -e "$SCRIPT_DIR/.git" ]]; then
-  APP_PATH="${APP_PATH:-$SCRIPT_DIR}"
-else
-  APP_PATH="${APP_PATH:-$HOME/.$APP_NAME}"
-fi
-readonly APP_PATH
+readonly APP_PATH="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd -P)"
 readonly VIM_PATH="${VIM_PATH:-$HOME/.vim}"
 readonly MANAGED_START='# >>> dotfiles >>>'
 readonly MANAGED_END='# <<< dotfiles <<<'
@@ -23,28 +13,18 @@ warn() { printf '\033[33m[!]\033[0m %s\n' "$*" >&2; }
 die() { printf '\033[31m[✘]\033[0m %s\n' "$*" >&2; exit 1; }
 
 usage() {
-  cat <<'EOF'
-Usage: ./install.sh [all|vim|shell|tmux]...
+  cat <<'USAGE'
+Usage: ./install.sh [all|vim|shell|tmux|uninstall]...
 
 With no arguments, installs every component. Components can be combined, for
 example: ./install.sh vim tmux
-EOF
+USAGE
 }
 
 require() {
   command -v "$1" >/dev/null 2>&1 || die "Required program not found: $1"
 }
 
-ensure_repo() {
-  require git
-  if [[ -d "$APP_PATH/.git" ]]; then
-    return
-  fi
-  [[ ! -e "$APP_PATH" ]] || die "$APP_PATH exists but is not a Git repository."
-  info "Cloning $REPO_URI into $APP_PATH"
-  git clone --branch "$REPO_BRANCH" --depth 1 "$REPO_URI" "$APP_PATH"
-}
-
 backup_path() {
   local target=$1
   if [[ -e "$target" || -L "$target" ]]; then
@@ -59,19 +39,26 @@ backup_path() {
 }
 
 link_config() {
-  local source=$1 target=$2 current=''
-  if [[ -L "$target" ]]; then
-    current=$(readlink "$target" || true)
-    [[ "$current" == "$source" ]] && return
+  local source=$1 target=$2
+  if [[ -L "$target" && "$(readlink "$target" || true)" == "$source" ]]; then
+    return
   fi
   backup_path "$target"
   ln -s "$source" "$target"
   success "Linked $target -> $source"
 }
 
+remove_managed_link() {
+  local target=$1 expected=$2
+  if [[ -L "$target" && "$(readlink "$target")" == "$expected" ]]; then
+    rm -- "$target"
+    info "Removed $target"
+  fi
+}
+
 remove_managed_block() {
   local file=$1 temp
-  [[ -f "$file" ]] || return
+  [[ -f "$file" ]] || return 0
   temp=$(mktemp)
   awk -v start="$MANAGED_START" -v end="$MANAGED_END" '
     $0 == start { managed = 1; next }
@@ -84,22 +71,21 @@ remove_managed_block() {
 
 install_vim() {
   require vim
-  require curl
+  require git
   if ! vim --clean -Nu NONE -n -es \
     '+if v:version < 900 | cquit | endif' '+qall'; then
     die 'Vim 9 or newer is required.'
   fi
 
-  link_config "$APP_PATH/.vimrc" "$HOME/.vimrc"
   mkdir -p "$VIM_PATH/autoload"
   local temp
-  temp=$(mktemp)
-  curl --fail --location --silent --show-error \
-    https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim \
-    --output "$temp"
-  mv "$temp" "$VIM_PATH/autoload/plug.vim"
+  temp=$(mktemp -d)
+  git clone --depth 1 --quiet https://github.com/junegunn/vim-plug "$temp"
+  cp "$temp/plug.vim" "$VIM_PATH/autoload/plug.vim"
+  rm -rf "$temp"
+  link_config "$APP_PATH/.vimrc" "$HOME/.vimrc"
   vim -Nu "$APP_PATH/.vimrc" -n -es \
-    '+set nomore' '+PlugInstall --sync' '+qall'
+    --cmd 'set nomore' '+PlugInstall --sync' '+qall'
   success 'Installed Vim configuration and plugins.'
 }
 
@@ -120,13 +106,15 @@ install_shell() {
 install_tmux() {
   require tmux
   link_config "$APP_PATH/.tmux.conf" "$HOME/.tmux.conf"
-  local tpm="$HOME/.tmux/plugins/tpm"
-  if [[ ! -d "$tpm/.git" ]]; then
-    [[ ! -e "$tpm" ]] || die "$tpm exists but is not a Git repository."
-    mkdir -p "$(dirname "$tpm")"
-    git clone --depth 1 https://github.com/tmux-plugins/tpm "$tpm"
-  fi
-  success 'Installed tmux configuration and TPM.'
+  success 'Installed tmux configuration.'
+}
+
+uninstall() {
+  remove_managed_link "$HOME/.vimrc" "$APP_PATH/.vimrc"
+  remove_managed_link "$HOME/.tmux.conf" "$APP_PATH/.tmux.conf"
+  remove_managed_block "$HOME/.bashrc"
+  success 'Removed dotfile links and the managed Bash block.'
+  info 'The repository, Vim data/plugins, and backups were retained.'
 }
 
 main() {
@@ -134,7 +122,6 @@ main() {
     -h|--help) usage; return ;;
   esac
 
-  ensure_repo
   local components=("$@") component
   ((${#components[@]})) || components=(all)
   for component in "${components[@]}"; do
@@ -147,6 +134,7 @@ main() {
       vim) install_vim ;;
       shell) install_shell ;;
       tmux) install_tmux ;;
+      uninstall) uninstall ;;
       *) usage; die "Unknown component: $component" ;;
     esac
   done