Update Makefile and add uninstall script

Makefile

@@ -1,4 +1,4 @@
-.PHONY: install test test-plugin doctor verify clean lint format build-plugin sync-plugin-repo help
+.PHONY: install test test-plugin doctor verify clean lint format build-plugin sync-plugin-repo uninstall-legacy help
 
 # Installation (local source, editable) - RECOMMENDED
 install:
@@ -126,5 +126,13 @@ help:
 	@echo ""
 	@echo "📚 Documentation:"
 	@echo "  make translate       - Translate README to Chinese and Japanese"
-	@echo "  make help            - Show this help message"
+	@echo ""
+	@echo "🧹 Cleanup:"
+	@echo "  make uninstall-legacy - Remove old SuperClaude files from ~/.claude"
+	@echo "  make help            - Show this help message"
+
+# Remove legacy SuperClaude files from ~/.claude directory
+uninstall-legacy:
+	@echo "🧹 Cleaning up legacy SuperClaude files..."
+	@bash scripts/uninstall_legacy.sh
 	@echo ""

scripts/uninstall_legacy.sh

@@ -0,0 +1,118 @@
+#!/usr/bin/env bash
+#
+# SuperClaude Legacy Cleanup Script
+# Removes old SuperClaude-related files from ~/.claude
+#
+
+set -euo pipefail
+
+CLAUDE_DIR="$HOME/.claude"
+BACKUP_DIR="$HOME/.claude-superclaude-backup-$(date +%Y%m%d_%H%M%S)"
+
+echo "🧹 SuperClaude Legacy Cleanup"
+echo "=============================="
+echo ""
+
+# Check if .claude directory exists
+if [[ ! -d "$CLAUDE_DIR" ]]; then
+    echo "✅ No .claude directory found - nothing to clean"
+    exit 0
+fi
+
+# List of SuperClaude-related files/directories to remove
+SUPERCLAUDE_ITEMS=(
+    # SuperClaude plugin (if exists)
+    "plugins/superclaude@superclaude"
+
+    # Legacy SuperClaude configs (if any)
+    "superclaude.json"
+    "superclaude_config.json"
+)
+
+# Function to backup and remove
+backup_and_remove() {
+    local item="$1"
+    local full_path="$CLAUDE_DIR/$item"
+
+    if [[ -e "$full_path" ]] || [[ -L "$full_path" ]]; then
+        echo "📦 Backing up: $item"
+        mkdir -p "$BACKUP_DIR/$(dirname "$item")"
+        cp -R "$full_path" "$BACKUP_DIR/$item" 2>/dev/null || true
+
+        echo "🗑️  Removing: $item"
+        rm -rf "$full_path"
+        return 0
+    fi
+    return 1
+}
+
+echo "🔍 Scanning for SuperClaude files..."
+echo ""
+
+FOUND_COUNT=0
+for item in "${SUPERCLAUDE_ITEMS[@]}"; do
+    if backup_and_remove "$item"; then
+        ((FOUND_COUNT++))
+    fi
+done
+
+# Clean up settings.json if it contains SuperClaude plugin reference
+SETTINGS_FILE="$CLAUDE_DIR/settings.json"
+if [[ -f "$SETTINGS_FILE" ]]; then
+    if grep -q "superclaude@superclaude" "$SETTINGS_FILE" 2>/dev/null; then
+        echo "📦 Backing up: settings.json"
+        mkdir -p "$BACKUP_DIR"
+        cp "$SETTINGS_FILE" "$BACKUP_DIR/settings.json"
+
+        echo "🧹 Removing SuperClaude plugin from settings.json"
+        # Use Python to properly manipulate JSON
+        python3 - <<'PYEOF' "$SETTINGS_FILE"
+import json
+import sys
+
+settings_file = sys.argv[1]
+
+try:
+    with open(settings_file, 'r') as f:
+        settings = json.load(f)
+
+    # Remove SuperClaude plugin
+    if 'enabledPlugins' in settings:
+        if 'superclaude@superclaude' in settings['enabledPlugins']:
+            del settings['enabledPlugins']['superclaude@superclaude']
+            print(f"   ✅ Removed superclaude@superclaude from enabledPlugins")
+
+        # Remove enabledPlugins if empty
+        if not settings['enabledPlugins']:
+            del settings['enabledPlugins']
+
+    with open(settings_file, 'w') as f:
+        json.dump(settings, f, indent=2)
+        f.write('\n')
+
+except Exception as e:
+    print(f"   ⚠️  Failed to update settings.json: {e}", file=sys.stderr)
+    sys.exit(1)
+PYEOF
+        ((FOUND_COUNT++))
+    fi
+fi
+
+echo ""
+echo "=============================="
+
+if [[ $FOUND_COUNT -eq 0 ]]; then
+    echo "✅ No SuperClaude files found - already clean!"
+    rmdir "$BACKUP_DIR" 2>/dev/null || true
+else
+    echo "🎉 Cleanup complete!"
+    echo ""
+    echo "📦 Backup saved to:"
+    echo "   $BACKUP_DIR"
+    echo ""
+    echo "Removed $FOUND_COUNT SuperClaude-related item(s)"
+fi
+
+echo ""
+echo "ℹ️  Note: Official Claude Code files were NOT touched"
+echo "   (history.jsonl, mcp.json, projects/, etc.)"