feat: XDG Base Directory compliance, --uninstall flag, and xclip advisory

- Resolve all paths via $XDG_CONFIG_HOME, $XDG_DATA_HOME, and
  $XDG_RUNTIME_DIR with conventional fallbacks (~/.config,
  ~/.local/share, /tmp); BIN_DIR stays ~/.local/bin (no XDG standard)
- Add --uninstall: removes symlink, desktop entry, and data dir with
  colored per-step output; prompts to remove config when interactive,
  skips silently when not; post-run verification reports any failures
- Warn in --check-deps and --install when only xclip is present —
  xclip operates through XWayland and can be unreliable on Wayland
- Normalize dependency messages to package names (wl-clipboard, xclip)
- Update README: XDG paths in install steps, --uninstall in usage,
  xclip advisory in prerequisites
- Fix test sandbox: export XDG_CONFIG_HOME and XDG_DATA_HOME so the
  overridden HOME is respected; add install (test 15) and uninstall
  (test 16) coverage; add cp and ln to mocked tool set

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -16,30 +16,56 @@ A feature-rich, portable CLI color utility for Linux, specializing in color pick
 
 ## 📋 Prerequisites
 
-To utilize all features, ensure the following are installed:
-- **KDE Plasma + Wayland:** Required for the `--pick` functionality.
-- **Python 3 + PyQt6:** Required for the picker helper.
-- **curl + jq:** Required for color naming support.
-- **wl-clipboard** (Wayland) or **xclip** (X11): Required for clipboard support.
-- **libnotify:** Required for desktop notifications (`notify-send`).
-- **ImageMagick (`magick` or `convert`):** Required for generating visual color swatches in desktop notifications.
+### Required Core Dependencies
+These are mandatory for the script to run and perform basic color conversions:
+- **Python 3:** Handles all color space math and conversions.
+- **jq:** Powers JSON formatting and internal data parsing.
+
+### Optional Feature Dependencies
+These enable specific functionality and can be installed as needed:
+- **KDE Plasma (Wayland):** Required for screen color picking (`--pick`).
+- **Python 3 PyQt6:** Required for the KDE color picker DBus interface.
+- **wl-clipboard** or **xclip:** Enables copying results to the system clipboard (`--copy`). `wl-clipboard` is strongly preferred on Wayland — `xclip` operates through XWayland and can be unreliable. `--check-deps` and `--install` will warn you if only `xclip` is found.
+- **curl:** Required for fetching human-readable color names from the web (`--name`).
+- **libnotify:** Enables desktop notifications (`--notify`).
+- **ImageMagick:** Generates visual color swatch icons for notifications (`--swatch`).
+- **Truecolor Terminal Emulator:** Required for accurate visual swatches in terminal output (`--swatch`).
+
+> **Tip:** Use `color-tool --check-deps` to quickly see which dependencies are currently met on your system.
 
 ## 🚀 Installation
 
+### Automatic Installation (Recommended)
+
 You can download the script directly from the [latest release](https://git.rootiest.dev/rootiest/color-tool/releases/latest) and install it:
 
 ```bash
-curl -sSLO https://git.rootiest.dev/rootiest/color-tool/releases/download/latest/color-tool
-chmod +x color-tool
-./color-tool --install
+# Download and install the latest version of the color-tool script
+curl -sSLO https://git.rootiest.dev/rootiest/color-tool/releases/download/latest/color-tool && bash color-tool --install && rm ./color-tool
 ```
 
 This will:
-1. Move the script to `~/.local/share/color-tool/`.
+1. Install the script to `$XDG_DATA_HOME/color-tool/` (default: `~/.local/share/color-tool/`).
 2. Symlink the binary to `~/.local/bin/color-tool`.
-3. Generate a sample configuration at `~/.config/color-tool/config.toml`.
-4. Create a `.desktop` entry so you can launch the picker from your application menu.
+3. Generate a sample configuration at `$XDG_CONFIG_HOME/color-tool/config.toml` (default: `~/.config/color-tool/config.toml`).
+4. Create a `.desktop` entry in `$XDG_DATA_HOME/applications/` so you can launch the picker from your application menu.
 5. Verify and warn about any missing optional or required system dependencies.
+6. Clean up the downloaded script after installation.
+
+### Manual Usage
+
+Alternatively, you can [download the script](https://git.rootiest.dev/rootiest/color-tool/releases/download/latest/color-tool) manually.
+Then run it from any location without installation:
+
+```bash
+# Make script executable
+chmod +x color-tool
+# Run script directly
+./color-tool --pick --output hex,rgb
+```
+
+However, this will not add the script to your `$PATH` or create a desktop entry,
+so you won't be able to launch it from the app menu or use it globally without specifying the path.
 
 ## 🛠 Usage
 
@@ -58,7 +84,8 @@ Options:
   --get-config   Print the current configuration
   --set-config   Update the configuration (e.g. --set-config desktop --copy)
   --reset-config Restore the configuration file to its default values
-  --install      Install to ~/.local/share/ and symlink to ~/.local/bin/
+  --check-deps   Check system dependencies and environment support
+  --install      Install to $XDG_DATA_HOME/color-tool/ and symlink to ~/.local/bin/
   --help, -h     Show this help message
 ```
 
@@ -86,7 +113,7 @@ color-tool --desktop --no-name
 
 ## ⚙️ Configuration
 
-You can define your preferred defaults in `~/.config/color-tool/config.toml`. The tool uses a priority hierarchy: **CLI Flags > Desktop Config > Default Config**.
+You can define your preferred defaults in `$XDG_CONFIG_HOME/color-tool/config.toml` (default: `~/.config/color-tool/config.toml`). The tool uses a priority hierarchy: **CLI Flags > Desktop Config > Default Config**.
 
 ```toml
 [defaults]

color-tool

@@ -22,9 +22,39 @@ set -euo pipefail
 
 # Resolve the real directory of this script so we can find bundled helpers
 SCRIPT_DIR="$(dirname "$(readlink -f "$0")")"
-CONFIG_FILE="$HOME/.config/color-tool/config.toml"
+
+# XDG Base Directory Specification — prefer env vars, fall back to conventional defaults
+XDG_CONFIG_HOME="${XDG_CONFIG_HOME:-$HOME/.config}"
+XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
+
+CONFIG_FILE="$XDG_CONFIG_HOME/color-tool/config.toml"
 REPO_URL="https://git.rootiest.dev/rootiest/color-tool"
 
+# Colors and styles
+BOLD='\033[1m'
+DIM='\033[2m'
+RESET='\033[0m'
+CYAN='\033[36m'
+YELLOW='\033[33m'
+GREEN='\033[32m'
+MAG='\033[35m'
+RED='\033[31m'
+
+# Gradient logo colors
+C1='\033[38;2;255;80;80m'  # Red-ish
+C2='\033[38;2;255;160;0m'  # Orange
+C3='\033[38;2;220;210;0m'  # Yellow
+C4='\033[38;2;80;200;80m'  # Green
+C5='\033[38;2;80;160;255m' # Blue
+
+# Path constants
+DATA_DIR="$XDG_DATA_HOME/color-tool"
+BIN_DIR="$HOME/.local/bin"
+BIN_PATH="$BIN_DIR/color-tool"
+CONFIG_DIR="$XDG_CONFIG_HOME/color-tool"
+APP_DIR="$XDG_DATA_HOME/applications"
+DESKTOP_FILE="$APP_DIR/color-tool.desktop"
+
 # ── Initial Defaults ──────────────────────────────────────────────────────────
 
 # Hardcoded base defaults
@@ -84,7 +114,7 @@ get_config() {
       local val="${BASH_REMATCH[2]}"
       printf "%-6s = %s\n" "$key" "$val"
     fi
-  done < "$CONFIG_FILE"
+  done <"$CONFIG_FILE"
 }
 
 set_config() {
@@ -110,30 +140,30 @@ set_config() {
 
   while [[ $# -gt 0 ]]; do
     case "$1" in
-      --output=*) new_output="${1#*=}" ;;
-      output=*) new_output="${1#*=}" ;;
-      --json) new_json="true" ;;
-      --no-json) new_json="false" ;;
-      --alpha) new_alpha="true" ;;
-      --no-alpha) new_alpha="false" ;;
-      --name) new_name="true" ;;
-      --no-name) new_name="false" ;;
-      --swatch) new_swatch="true" ;;
-      --no-swatch) new_swatch="false" ;;
-      --copy) new_copy="true" ;;
-      --no-copy) new_copy="false" ;;
-      --notify) new_notify="true" ;;
-      --no-notify) new_notify="false" ;;
-      --pick) new_pick="true" ;;
-      --no-pick) new_pick="false" ;;
-      -*) 
-        echo "Error: Unknown option for --set-config: $1" >&2
-        exit 1
-        ;;
-      *)
-        echo "Error: Unknown argument for --set-config: $1" >&2
-        exit 1
-        ;;
+    --output=*) new_output="${1#*=}" ;;
+    output=*) new_output="${1#*=}" ;;
+    --json) new_json="true" ;;
+    --no-json) new_json="false" ;;
+    --alpha) new_alpha="true" ;;
+    --no-alpha) new_alpha="false" ;;
+    --name) new_name="true" ;;
+    --no-name) new_name="false" ;;
+    --swatch) new_swatch="true" ;;
+    --no-swatch) new_swatch="false" ;;
+    --copy) new_copy="true" ;;
+    --no-copy) new_copy="false" ;;
+    --notify) new_notify="true" ;;
+    --no-notify) new_notify="false" ;;
+    --pick) new_pick="true" ;;
+    --no-pick) new_pick="false" ;;
+    -*)
+      echo "Error: Unknown option for --set-config: $1" >&2
+      exit 1
+      ;;
+    *)
+      echo "Error: Unknown argument for --set-config: $1" >&2
+      exit 1
+      ;;
     esac
     shift
   done
@@ -158,7 +188,7 @@ set_config() {
 
     if [[ "$parsed_line" =~ ^\[([A-Za-z_-]+)\]$ ]]; then
       current_section="${BASH_REMATCH[1]}"
-      echo "$original_line" >> "$temp_file"
+      echo "$original_line" >>"$temp_file"
       continue
     fi
 
@@ -166,71 +196,71 @@ set_config() {
       local key="${BASH_REMATCH[1]}"
       local new_val=""
       case "$key" in
-        output)
-          if [[ -n "$new_output" ]]; then new_val="\"$new_output\""; fi
-          ;;
-        json)
-          if [[ -n "$new_json" ]]; then new_val="$new_json"; fi
-          ;;
-        alpha)
-          if [[ -n "$new_alpha" ]]; then new_val="$new_alpha"; fi
-          ;;
-        swatch)
-          if [[ -n "$new_swatch" ]]; then new_val="$new_swatch"; fi
-          ;;
-        name)
-          if [[ -n "$new_name" ]]; then new_val="$new_name"; fi
-          ;;
-        copy)
-          if [[ -n "$new_copy" ]]; then new_val="$new_copy"; fi
-          ;;
-        pick)
-          if [[ -n "$new_pick" ]]; then new_val="$new_pick"; fi
-          ;;
-        notify)
-          if [[ -n "$new_notify" ]]; then new_val="$new_notify"; fi
-          ;;
+      output)
+        if [[ -n "$new_output" ]]; then new_val="\"$new_output\""; fi
+        ;;
+      json)
+        if [[ -n "$new_json" ]]; then new_val="$new_json"; fi
+        ;;
+      alpha)
+        if [[ -n "$new_alpha" ]]; then new_val="$new_alpha"; fi
+        ;;
+      swatch)
+        if [[ -n "$new_swatch" ]]; then new_val="$new_swatch"; fi
+        ;;
+      name)
+        if [[ -n "$new_name" ]]; then new_val="$new_name"; fi
+        ;;
+      copy)
+        if [[ -n "$new_copy" ]]; then new_val="$new_copy"; fi
+        ;;
+      pick)
+        if [[ -n "$new_pick" ]]; then new_val="$new_pick"; fi
+        ;;
+      notify)
+        if [[ -n "$new_notify" ]]; then new_val="$new_notify"; fi
+        ;;
       esac
 
       if [[ -n "$new_val" ]]; then
         if [[ "$original_line" =~ ^([[:space:]]*[A-Za-z_]+[[:space:]]*=[[:space:]]*)([^[:space:]#]+)(.*)$ ]]; then
-           local prefix="${BASH_REMATCH[1]}"
-           local old_val="${BASH_REMATCH[2]}"
-           local suffix="${BASH_REMATCH[3]}"
+          local prefix="${BASH_REMATCH[1]}"
+          local old_val="${BASH_REMATCH[2]}"
+          local suffix="${BASH_REMATCH[3]}"
 
-           # Adjust whitespace to keep comments aligned if the value length changed
-           if [[ "$key" != "output" ]]; then
-             local old_len=${#old_val}
-             local new_len=${#new_val}
-             local diff=$((old_len - new_len))
+          # Adjust whitespace to keep comments aligned if the value length changed
+          if [[ "$key" != "output" ]]; then
+            local old_len=${#old_val}
+            local new_len=${#new_val}
+            local diff=$((old_len - new_len))
 
-             if [[ $diff -gt 0 ]]; then
-               # new value is shorter, add spaces to suffix
-               local spaces=""
-               for ((i=0; i<diff; i++)); do spaces+=" "; done
-               suffix="$spaces$suffix"
-             elif [[ $diff -lt 0 ]]; then
-               # new value is longer, remove spaces from suffix
-               local remove=$((-diff))
-               for ((i=0; i<remove; i++)); do
-                 if [[ "$suffix" == " "* ]]; then
-                   suffix="${suffix# }"
-                 fi
-               done
-             fi
-           fi
+            if [[ $diff -gt 0 ]]; then
+              # new value is shorter, add spaces to suffix
+              local spaces=""
+              for ((i = 0; i < diff; i++)); do spaces+=" "; done
+              suffix="$spaces$suffix"
+            elif [[ $diff -lt 0 ]]; then
+              # new value is longer, remove spaces from suffix
+              local remove=$((-diff))
+              for ((i = 0; i < remove; i++)); do
+                if [[ "$suffix" == " "* ]]; then
+                  suffix="${suffix# }"
+                fi
+              done
+            fi
+          fi
 
-           echo "$prefix$new_val$suffix" >> "$temp_file"
-           continue
+          echo "$prefix$new_val$suffix" >>"$temp_file"
+          continue
         elif [[ "$original_line" =~ ^([[:space:]]*[A-Za-z_]+[[:space:]]*=[[:space:]]*)(.*)$ ]]; then
-           echo "${BASH_REMATCH[1]}$new_val" >> "$temp_file"
-           continue
+          echo "${BASH_REMATCH[1]}$new_val" >>"$temp_file"
+          continue
         fi
       fi
     fi
 
-    echo "$original_line" >> "$temp_file"
-  done < "$CONFIG_FILE"
+    echo "$original_line" >>"$temp_file"
+  done <"$CONFIG_FILE"
 
   mv "$temp_file" "$CONFIG_FILE"
 }
@@ -312,43 +342,38 @@ reset_config() {
 # ── Help ──────────────────────────────────────────────────────────────────────
 
 show_help() {
-  local bold='\033[1m'
-  local dim='\033[2m'
-  local reset='\033[0m'
-  local cyan='\033[36m'
-  local yellow='\033[33m'
-  local mag='\033[35m'
-
   printf "\n"
   # Title: "color" in a rainbow gradient, "-tool" in bold
-  printf "  ${bold}\033[38;2;255;80;80mc\033[38;2;255;160;0mo\033[38;2;220;210;0ml\033[38;2;80;200;80mo\033[38;2;80;160;255mr${reset}${bold}-tool${reset}"
-  printf "  ${dim}—  pick, convert, and format colors${reset}\n\n"
+  printf "  ${BOLD}${C1}c${C2}o${C3}l${C4}o${C5}r${RESET}${BOLD}-tool${RESET}"
+  printf "  ${DIM}—  pick, convert, and format colors${RESET}\n\n"
 
-  printf "  ${bold}${yellow}Usage${reset}  ${cyan}${0##*/}${reset} ${dim}[OPTIONS]${reset} [COLOR ...]\n\n"
+  printf "  ${BOLD}${YELLOW}Usage${RESET}  ${CYAN}${0##*/}${RESET} ${DIM}[OPTIONS]${RESET} [COLOR ...]\n\n"
 
-  printf "  ${bold}${yellow}Options${reset}\n"
-  printf "  ${bold}${cyan}--[no-]pick${reset}    Open the KDE Plasma color picker ${dim}(requires KDE + Wayland)${reset}\n"
-  printf "  ${bold}${cyan}--output${reset} ${dim}FMT${reset}    Format(s) to output: ${cyan}hex, rgb, hsl, rgba, hsla, hexa, all${reset} ${dim}(comma-separated)${reset}\n"
-  printf "  ${bold}${cyan}--[no-]json${reset}    Output as a JSON table of selected formats\n"
-  printf "  ${bold}${cyan}--[no-]name${reset}    Fetch nearest color name from thecolorapi.com ${dim}(requires curl, jq)${reset}\n"
-  printf "  ${bold}${cyan}--[no-]swatch${reset}  Include a color swatch in the terminal output and desktop notification\n"
-  printf "  ${bold}${cyan}--[no-]copy${reset}    Copy result to clipboard ${dim}(wl-clipboard preferred, xclip as fallback)${reset}\n"
-  printf "  ${bold}${cyan}--[no-]notify${reset}  Show desktop notification ${dim}(on by default in --desktop)${reset}\n"
-  printf "  ${bold}${cyan}--desktop${reset}      GUI mode: pick → copy → notify ${dim}(for app menu / .desktop launcher)${reset}\n"
-  printf "  ${bold}${cyan}--get-config${reset}   Print the current configuration\n"
-  printf "  ${bold}${cyan}--set-config${reset}   Update the configuration ${dim}(e.g. --set-config desktop --copy)${reset}\n"
-  printf "  ${bold}${cyan}--reset-config${reset} Restore the configuration file to its default values\n"
-  printf "  ${bold}${cyan}--install${reset}      Install to ~/.local/share/color-tool/ and symlink into ~/.local/bin/\n"
-  printf "  ${bold}${cyan}--help${reset}, ${bold}${cyan}-h${reset}     Show this help message\n\n"
+  printf "  ${BOLD}${YELLOW}Options${RESET}\n"
+  printf "  ${BOLD}${CYAN}--[no-]pick${RESET}    Open the KDE Plasma color picker ${DIM}(requires KDE + Wayland)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--output${RESET} ${DIM}FMT${RESET}    Format(s) to output: ${CYAN}hex, rgb, hsl, rgba, hsla, hexa, all${RESET} ${DIM}(comma-separated)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--[no-]json${RESET}    Output as a JSON table of selected formats\n"
+  printf "  ${BOLD}${CYAN}--[no-]name${RESET}    Fetch nearest color name from thecolorapi.com ${DIM}(requires curl, jq)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--[no-]swatch${RESET}  Include a color swatch in the terminal output and desktop notification\n"
+  printf "  ${BOLD}${CYAN}--[no-]copy${RESET}    Copy result to clipboard ${DIM}(wl-clipboard preferred, xclip as fallback)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--[no-]notify${RESET}  Show desktop notification ${DIM}(on by default in --desktop)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--desktop${RESET}      GUI mode: pick → copy → notify ${DIM}(for app menu / .desktop launcher)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--get-config${RESET}   Print the current configuration\n"
+  printf "  ${BOLD}${CYAN}--set-config${RESET}   Update the configuration ${DIM}(e.g. --set-config desktop --copy)${RESET}\n"
+  printf "  ${BOLD}${CYAN}--reset-config${RESET} Restore the configuration file to its default values\n"
+  printf "  ${BOLD}${CYAN}--check-deps${RESET}   Check system dependencies and environment support\n"
+  printf "  ${BOLD}${CYAN}--install${RESET}      Install to %s/ and symlink into %s/\n" "$DATA_DIR" "$BIN_DIR"
+  printf "  ${BOLD}${CYAN}--uninstall${RESET}    Remove installed files and optionally the configuration\n"
+  printf "  ${BOLD}${CYAN}--help${RESET}, ${BOLD}${CYAN}-h${RESET}     Show this help message\n\n"
 
-  printf "  ${bold}${yellow}Examples${reset}\n"
-  printf "  ${cyan}${0##*/}${reset} ${mag}\"#534145\"${reset} --swatch\n"
-  printf "  ${cyan}${0##*/}${reset} --pick --output rgb,hsl --json\n"
-  printf "  ${cyan}${0##*/}${reset} \"rgb(255, 100, 0)\" --output hex,hsla\n\n"
+  printf "  ${BOLD}${YELLOW}Examples${RESET}\n"
+  printf "  ${CYAN}${0##*/}${RESET} ${MAG}\"#534145\"${RESET} --swatch\n"
+  printf "  ${CYAN}${0##*/}${RESET} --pick --output rgb,hsl --json\n"
+  printf "  ${CYAN}${0##*/}${RESET} \"rgb(255, 100, 0)\" --output hex,hsla\n\n"
 
-  printf "  ${bold}${yellow}Config${reset}  ${dim}~/.config/color-tool/config.toml${reset}\n"
-  printf "  ${dim}[defaults]${reset} keys: ${cyan}output json swatch name copy pick notify${reset}\n"
-  printf "  ${dim}[desktop]${reset}  keys: ${cyan}output json name notify copy swatch${reset}  ${dim}(pick always on)${reset}\n\n"
+  printf "  ${BOLD}${YELLOW}Config${RESET}  ${DIM}%s${RESET}\n" "$CONFIG_FILE"
+  printf "  ${DIM}[defaults]${RESET} keys: ${CYAN}output json swatch name copy pick notify${RESET}\n"
+  printf "  ${DIM}[desktop]${RESET}  keys: ${CYAN}output json name notify copy swatch${RESET}  ${DIM}(pick always on)${RESET}\n\n"
 }
 
 # ── Environment detection ─────────────────────────────────────────────────────
@@ -365,6 +390,26 @@ check_kde_wayland() {
   fi
 }
 
+check_truecolor() {
+  # Standard way to check for truecolor support
+  if [[ "${COLORTERM:-}" == "truecolor" || "${COLORTERM:-}" == "24bit" ]]; then
+    return 0
+  fi
+  # Some terminals report color count via tput
+  if command -v tput >/dev/null 2>&1; then
+    local colors
+    colors=$(tput colors 2>/dev/null || echo 0)
+    if [[ $colors -ge 16777216 ]]; then
+      return 0
+    fi
+  fi
+  # Check for direct color in TERM
+  if [[ "${TERM:-}" == *"-direct"* ]]; then
+    return 0
+  fi
+  return 1
+}
+
 # ── Clipboard & Notifications ─────────────────────────────────────────────────
 
 copy_to_clipboard() {
@@ -387,7 +432,7 @@ notify_result() {
 
   local icon_name="color-picker"
   if [[ $swatch_mode -eq 1 && -n "$hex_color" ]]; then
-    local swatch_path="/tmp/color_swatch_${hex_color//\#/}.png"
+    local swatch_path="${XDG_RUNTIME_DIR:-${TMPDIR:-/tmp}}/color_swatch_${hex_color//\#/}.png"
     if command -v magick >/dev/null 2>&1; then
       if magick -size 64x64 xc:"$hex_color" "$swatch_path" 2>/dev/null; then
         icon_name="$swatch_path"
@@ -479,20 +524,66 @@ run_color_picker() {
 
 suggest_path_add() {
   local bin_dir="$1" is_fish=0
+  # Direct check
   [[ "${SHELL:-}" == */fish ]] && is_fish=1
+
+  # Parent process check (good for sub-shells)
   if [[ $is_fish -eq 0 ]]; then
     local parent
     parent=$(ps -p "$PPID" -o comm= 2>/dev/null || true)
     [[ "$parent" == *fish* ]] && is_fish=1
   fi
+
   if [[ $is_fish -eq 1 ]]; then
-    printf "      Run:  fish_add_path %s\n" "$bin_dir"
+    printf "      ${CYAN}Run:${RESET}  fish_add_path %s\n" "$bin_dir"
+  elif [[ "${SHELL:-}" == */zsh ]]; then
+    printf "      ${CYAN}Add to ~/.zshrc:${RESET}  export PATH=\"%s:\$PATH\"\n" "$bin_dir"
   else
-    printf "      For bash/zsh:  export PATH=\"%s:\$PATH\"\n" "$bin_dir"
-    printf "      For fish:      fish_add_path %s\n" "$bin_dir"
+    # Fallback for Bash or unknown
+    printf "      ${CYAN}Add to ~/.bashrc:${RESET}  export PATH=\"%s:\$PATH\"\n" "$bin_dir"
+    printf "      ${DIM}(Or use fish_add_path if using Fish)${RESET}\n"
   fi
 }
 
+check_deps() {
+  printf "\n  ${BOLD}Dependency Check${RESET}\n\n"
+
+  _check() {
+    local label="$1"
+    local cmd="$2"
+    local desc="$3"
+    local required="${4:-0}"
+
+    printf "  "
+    if eval "$cmd"; then
+      printf "${GREEN}✔${RESET} "
+    else
+      if [[ $required -eq 1 ]]; then
+        printf "${RED}✘${RESET} "
+      else
+        printf "${YELLOW}⚠${RESET} "
+      fi
+    fi
+
+    printf "%-25s ${DIM}%s${RESET}\n" "$label" "$desc"
+  }
+
+  _check "python3" "command -v python3 >/dev/null" "Core logic and color conversions" 1
+  _check "python3-pyqt6" "python3 -c 'import PyQt6.QtDBus' 2>/dev/null" "KDE color picker interface" 0
+  _check "jq" "command -v jq >/dev/null" "JSON output and data parsing" 1
+  _check "curl" "command -v curl >/dev/null" "Fetching color names from API" 0
+  _check "wl-clipboard / xclip" "command -v wl-copy >/dev/null || command -v xclip >/dev/null" "System clipboard integration" 0
+  if ! command -v wl-copy >/dev/null 2>&1 && command -v xclip >/dev/null 2>&1; then
+    printf "  ${YELLOW}    └─ xclip found but wl-clipboard is missing — xclip operates through XWayland and may be unreliable on Wayland${RESET}\n"
+  fi
+  _check "libnotify" "command -v notify-send >/dev/null" "Desktop notifications" 0
+  _check "ImageMagick" "command -v magick >/dev/null || command -v convert >/dev/null" "Color swatches in notifications" 0
+  _check "KDE Plasma (Wayland)" "[[ -n \"${WAYLAND_DISPLAY:-}\" ]] && { local d=\"${XDG_CURRENT_DESKTOP:-}\"; [[ \"\$d\" == *KDE* || -n \"${KDE_FULL_SESSION:-}\" ]]; }" "Required for screen color picking" 0
+  _check "Truecolor Support" "check_truecolor" "Color swatches in terminal output" 0
+
+  printf "\n  ${DIM}Legend: ${GREEN}✔${DIM} Found  ${YELLOW}⚠${DIM} Missing (Optional)  ${RED}✘${DIM} Missing (Required)${RESET}\n\n"
+}
+
 check_dependencies() {
   local missing=()
 
@@ -501,7 +592,9 @@ check_dependencies() {
   fi
 
   if ! command -v wl-copy >/dev/null 2>&1 && ! command -v xclip >/dev/null 2>&1; then
-    missing+=("wl-clipboard (wl-copy) or xclip — required for clipboard copy support")
+    missing+=("wl-clipboard or xclip — required for clipboard copy support")
+  elif ! command -v wl-copy >/dev/null 2>&1 && command -v xclip >/dev/null 2>&1; then
+    missing+=("wl-clipboard — xclip is available but operates through XWayland and may be unreliable on Wayland; wl-clipboard is preferred")
   fi
 
   if ! command -v python3 >/dev/null 2>&1; then
@@ -535,71 +628,184 @@ check_dependencies() {
     missing+=("KDE Plasma on Wayland — required for the screen color picker feature")
   fi
 
+  if ! check_truecolor; then
+    missing+=("Truecolor support not detected — the --swatch feature in the terminal may not work as intended")
+  fi
+
   if [[ ${#missing[@]} -gt 0 ]]; then
-    local yellow='\033[33m'
-    local bold='\033[1m'
-    local reset='\033[0m'
-    printf "\n  ${bold}${yellow}Warnings — Missing optional dependencies:${reset}\n"
+    printf "\n  ${BOLD}${YELLOW}Warnings — Missing optional dependencies:${RESET}\n"
     for item in "${missing[@]}"; do
       printf "    - %s\n" "$item"
     done
-    printf "  ${yellow}Functionality will be limited without these installed.${reset}\n"
+    printf "  ${YELLOW}Functionality will be limited without these installed.${RESET}\n"
   fi
 }
 
 do_install() {
-  local data_dir="$HOME/.local/share/color-tool"
-  local bin_dir="$HOME/.local/bin"
-  local bin_link="$bin_dir/color-tool"
   local src_script
   src_script="$(readlink -f "$0")"
 
-  mkdir -p "$data_dir" "$bin_dir"
-  cp "$src_script" "$data_dir/color-tool"
-  chmod +x "$data_dir/color-tool"
-  generate_picker_script "$data_dir/wl-colorpicker-plasma.py"
-  ln -sf "$data_dir/color-tool" "$bin_link"
+  printf "\n  ${BOLD}Installing ${C1}c${C2}o${C3}l${C4}o${C5}r${RESET}${BOLD}-tool...${RESET}\n\n"
 
-  local config_dir="$HOME/.config/color-tool"
-  local config_file="$config_dir/config.toml"
-  if [[ ! -f "$config_file" ]]; then
+  # Efficient Directory Creation Loop
+  local dirs=("$BIN_DIR" "$DATA_DIR" "$CONFIG_DIR" "$APP_DIR")
+  for dir in "${dirs[@]}"; do
+    if [[ ! -d "$dir" ]]; then
+      printf "  ${DIM}Creating %s...${RESET}\n" "$dir"
+      mkdir -p "$dir"
+    fi
+  done
+
+  # Core installation steps
+  cp "$src_script" "$DATA_DIR/color-tool"
+  chmod +x "$DATA_DIR/color-tool"
+  generate_picker_script "$DATA_DIR/wl-colorpicker-plasma.py"
+  ln -sf "$DATA_DIR/color-tool" "$BIN_PATH"
+
+  # Config setup
+  if [[ ! -f "$CONFIG_FILE" ]]; then
     write_default_config
-    printf "  config  %s  (sample created)\n" "$config_file"
+    printf "  ${BOLD}${GREEN}config${RESET}  %s  ${DIM}(sample created)${RESET}\n" "$CONFIG_FILE"
   else
-    printf "  config  %s\n" "$config_file"
+    printf "  ${BOLD}${GREEN}config${RESET}  %s\n" "$CONFIG_FILE"
   fi
 
-  local app_dir="$HOME/.local/share/applications"
-  local desktop_file="$app_dir/color-tool.desktop"
-  local bin_path="$HOME/.local/bin/color-tool"
-  mkdir -p "$app_dir"
-  cat >"$desktop_file" <<EOF
+  # Desktop Entry (using consolidated BIN_PATH)
+  cat >"$DESKTOP_FILE" <<EOF
 [Desktop Entry]
 Version=1.1
 Type=Application
 Name=Color Tool
 Comment=Pick a color and copy it to the clipboard
-Exec=$bin_path --desktop
+Exec=$BIN_PATH --desktop
 Icon=color-picker
 Categories=Utility;Graphics;
 Keywords=color;picker;hex;rgb;clipboard;
 Terminal=false
 NoDisplay=false
 EOF
-  printf "  app     %s\n" "$desktop_file"
 
-  printf "Installed:\n"
-  printf "  data    %s/\n" "$data_dir"
-  printf "  bin     %s -> %s\n" "$bin_link" "$data_dir/color-tool"
+  # Summary output
+  printf "  ${BOLD}${GREEN}app${RESET}     %s\n" "$DESKTOP_FILE"
+  printf "  ${BOLD}${GREEN}data${RESET}    %s/\n" "$DATA_DIR"
+  printf "  ${BOLD}${GREEN}bin${RESET}     %s -> %s\n" "$BIN_PATH" "$DATA_DIR/color-tool"
 
-  if [[ ":$PATH:" != *":$bin_dir:"* ]]; then
-    printf "\nNote: %s is not in your PATH.\n" "$bin_dir"
-    suggest_path_add "$bin_dir"
+  # Path verification
+  if [[ ":$PATH:" != *":$BIN_DIR:"* ]]; then
+    printf "\n${BOLD}${YELLOW}Warning:${RESET} %s is not in your PATH.\n" "$BIN_DIR"
+    suggest_path_add "$BIN_DIR"
   fi
 
   check_dependencies
 }
 
+do_uninstall() {
+  printf "\n  ${BOLD}Uninstalling ${C1}c${C2}o${C3}l${C4}o${C5}r${RESET}${BOLD}-tool...${RESET}\n\n"
+
+  local errors=0
+  local remove_config=0
+
+  # 1. Binary symlink
+  printf "  ${DIM}Removing binary symlink...${RESET}\n"
+  if [[ -L "$BIN_PATH" ]]; then
+    if rm "$BIN_PATH"; then
+      printf "  ${BOLD}${GREEN}bin${RESET}     Removed %s\n" "$BIN_PATH"
+    else
+      printf "  ${BOLD}${RED}bin${RESET}     Failed to remove %s\n" "$BIN_PATH" >&2
+      errors=$((errors + 1))
+    fi
+  elif [[ -e "$BIN_PATH" ]]; then
+    printf "  ${BOLD}${YELLOW}bin${RESET}     %s is not a symlink — skipping\n" "$BIN_PATH"
+  else
+    printf "  ${DIM}bin${RESET}     %s not found — skipping\n" "$BIN_PATH"
+  fi
+
+  # 2. Desktop entry
+  printf "  ${DIM}Removing desktop entry...${RESET}\n"
+  if [[ -f "$DESKTOP_FILE" ]]; then
+    if rm "$DESKTOP_FILE"; then
+      printf "  ${BOLD}${GREEN}app${RESET}     Removed %s\n" "$DESKTOP_FILE"
+    else
+      printf "  ${BOLD}${RED}app${RESET}     Failed to remove %s\n" "$DESKTOP_FILE" >&2
+      errors=$((errors + 1))
+    fi
+  else
+    printf "  ${DIM}app${RESET}     %s not found — skipping\n" "$DESKTOP_FILE"
+  fi
+
+  # 3. Data directory
+  printf "  ${DIM}Removing data directory...${RESET}\n"
+  if [[ -d "$DATA_DIR" ]]; then
+    if rm -rf "$DATA_DIR"; then
+      printf "  ${BOLD}${GREEN}data${RESET}    Removed %s/\n" "$DATA_DIR"
+    else
+      printf "  ${BOLD}${RED}data${RESET}    Failed to remove %s/\n" "$DATA_DIR" >&2
+      errors=$((errors + 1))
+    fi
+  else
+    printf "  ${DIM}data${RESET}    %s not found — skipping\n" "$DATA_DIR"
+  fi
+
+  # 4. Config directory — prompt if interactive, skip silently if not
+  if [[ -d "$CONFIG_DIR" ]]; then
+    if [[ -t 0 ]]; then
+      printf "\n  ${BOLD}${YELLOW}?${RESET}  Remove configuration directory?\n"
+      printf "      ${DIM}%s/${RESET}\n" "$CONFIG_DIR"
+      printf "      ${BOLD}[y/N]${RESET} "
+      local answer
+      read -r answer
+      if [[ "${answer,,}" == "y" || "${answer,,}" == "yes" ]]; then
+        remove_config=1
+      else
+        printf "  ${BOLD}${DIM}config${RESET}  %s/ kept\n" "$CONFIG_DIR"
+      fi
+    else
+      printf "  ${DIM}config${RESET}  Non-interactive mode — keeping %s/\n" "$CONFIG_DIR"
+    fi
+  fi
+
+  if [[ $remove_config -eq 1 ]]; then
+    printf "  ${DIM}Removing configuration directory...${RESET}\n"
+    if rm -rf "$CONFIG_DIR"; then
+      printf "  ${BOLD}${GREEN}config${RESET}  Removed %s/\n" "$CONFIG_DIR"
+    else
+      printf "  ${BOLD}${RED}config${RESET}  Failed to remove %s/\n" "$CONFIG_DIR" >&2
+      errors=$((errors + 1))
+    fi
+  fi
+
+  # Verification
+  printf "\n  ${BOLD}Verification${RESET}\n\n"
+  local verify_errors=0
+  local labels=("bin" "app" "data")
+  local paths=("$BIN_PATH" "$DESKTOP_FILE" "$DATA_DIR")
+  if [[ $remove_config -eq 1 ]]; then
+    labels+=("config")
+    paths+=("$CONFIG_DIR")
+  fi
+
+  local i
+  for i in "${!labels[@]}"; do
+    local label="${labels[$i]}"
+    local path="${paths[$i]}"
+    printf "  "
+    if [[ ! -e "$path" && ! -L "$path" ]]; then
+      printf "${GREEN}✔${RESET} %-8s %s\n" "$label" "$path"
+    else
+      printf "${RED}✘${RESET} %-8s %s ${RED}(still present)${RESET}\n" "$label" "$path"
+      verify_errors=$((verify_errors + 1))
+    fi
+  done
+
+  printf "\n"
+  if [[ $((errors + verify_errors)) -eq 0 ]]; then
+    printf "  ${BOLD}${GREEN}color-tool has been successfully uninstalled.${RESET}\n\n"
+  else
+    printf "  ${BOLD}${RED}Uninstall completed with errors.${RESET} Some files may need to be removed manually.\n\n" >&2
+    return 1
+  fi
+}
+
 # ── Color conversion ──────────────────────────────────────────────────────────
 
 get_all_formats() {
@@ -787,6 +993,10 @@ while [[ $# -gt 0 ]]; do
     do_install
     exit 0
     ;;
+  --uninstall)
+    do_uninstall
+    exit 0
+    ;;
   --get-config)
     get_config
     exit 0
@@ -800,6 +1010,10 @@ while [[ $# -gt 0 ]]; do
     reset_config
     exit 0
     ;;
+  --check-deps)
+    check_deps
+    exit 0
+    ;;
   -*)
     echo "Unknown option: $1" >&2
     exit 1

tests/run_tests.sh

@@ -59,9 +59,13 @@ MOCK
 chmod +x "$BIN_DIR/curl"
 ln -s /usr/bin/mv "$BIN_DIR/mv"
 ln -s /usr/bin/tr "$BIN_DIR/tr"
+ln -s /usr/bin/cp "$BIN_DIR/cp"
+ln -s /usr/bin/ln "$BIN_DIR/ln"
 
 export PATH="$BIN_DIR"
 export HOME="$TEST_DIR"
+export XDG_CONFIG_HOME="$TEST_DIR/.config"
+export XDG_DATA_HOME="$TEST_DIR/.local/share"
 export WAYLAND_DISPLAY=wayland-0
 export XDG_CURRENT_DESKTOP=KDE
 
@@ -232,6 +236,44 @@ else
   echo "  Actual output: $output"
 fi
 
+# 15. Install — files placed in correct XDG directories
+it "installs files to XDG directories"
+# Clear any artifacts from earlier tests before verifying a clean install
+rm -rf "$XDG_DATA_HOME/color-tool" \
+       "$XDG_DATA_HOME/applications/color-tool.desktop" \
+       "$HOME/.local/bin" 2>/dev/null || true
+install_out=$("$COLOR_TOOL" --install 2>&1)
+if [[ -f "$XDG_DATA_HOME/color-tool/color-tool" ]] &&
+   [[ -f "$XDG_DATA_HOME/color-tool/wl-colorpicker-plasma.py" ]] &&
+   [[ -L "$HOME/.local/bin/color-tool" ]] &&
+   [[ -f "$XDG_DATA_HOME/applications/color-tool.desktop" ]] &&
+   [[ -f "$XDG_CONFIG_HOME/color-tool/config.toml" ]]; then
+  echo "PASS"
+  passed=$((passed + 1))
+else
+  echo "FAIL"
+  echo "  Install output: $install_out"
+  echo "  Files found:"
+  /usr/bin/find "$TEST_DIR/.local" "$TEST_DIR/.config" \( -type f -o -type l \) 2>/dev/null | /usr/bin/sort || true
+fi
+
+# 16. Uninstall — removes installed files, config is kept in non-interactive mode
+it "uninstalls installed files (keeps config)"
+uninstall_out=$("$COLOR_TOOL" --uninstall 2>&1)
+if [[ ! -e "$HOME/.local/bin/color-tool" ]] &&
+   [[ ! -L "$HOME/.local/bin/color-tool" ]] &&
+   [[ ! -d "$XDG_DATA_HOME/color-tool" ]] &&
+   [[ ! -f "$XDG_DATA_HOME/applications/color-tool.desktop" ]] &&
+   [[ -f "$XDG_CONFIG_HOME/color-tool/config.toml" ]]; then
+  echo "PASS"
+  passed=$((passed + 1))
+else
+  echo "FAIL"
+  echo "  Uninstall output: $uninstall_out"
+  echo "  Files still present:"
+  /usr/bin/find "$TEST_DIR/.local" "$TEST_DIR/.config" \( -type f -o -type l \) 2>/dev/null | /usr/bin/sort || true
+fi
+
 # ── Cleanup ───────────────────────────────────────────────────────────────────
 echo "---------------------------------------"
 echo "Result: $passed/$total tests passed."