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internal/skills/skills.go

@@ -4,6 +4,7 @@
 package skills
 
 import (
+	"bytes"
 	"embed"
 	"fmt"
 	"io/fs"
@@ -129,6 +130,16 @@ func Exists(name string) bool {
 // 并将其 commands/ 模板分发到项目 .cursor/commands/。
 // 目标已存在时同步为最新内置内容，并清理已退役的内置文件。
 func Install(projectPath string, name string) error {
+	name = sanitizeSkillName(name)
+	projectPath = strings.TrimSpace(projectPath)
+	operationMu.Lock()
+	defer operationMu.Unlock()
+	if !Exists(name) {
+		return fmt.Errorf("未知的内置 skill")
+	}
+	if err := checkManagedPaths(projectPath, name); err != nil {
+		return err
+	}
 	name = sanitizeSkillName(name)
 	if name == "" || !Exists(name) {
 		return fmt.Errorf("内置 skill 不存在: %s", name)
@@ -170,6 +181,9 @@ func installCommands(projectPath string, name string) error {
 		if err != nil {
 			return fmt.Errorf("读取命令模板失败: %w", err)
 		}
+		if err := backupBeforeReplace(filepath.Join(commandsDir, fileName), data); err != nil {
+			return err
+		}
 		if err := os.WriteFile(filepath.Join(commandsDir, fileName), data, 0o644); err != nil {
 			return fmt.Errorf("写入命令文件失败: %w", err)
 		}
@@ -179,6 +193,19 @@ func installCommands(projectPath string, name string) error {
 
 // Uninstall 移除项目内的 skill 目录与随附的命令文件。不存在时幂等成功。
 func Uninstall(projectPath string, name string) error {
+	name = sanitizeSkillName(name)
+	projectPath = strings.TrimSpace(projectPath)
+	operationMu.Lock()
+	defer operationMu.Unlock()
+	if !Exists(name) {
+		return fmt.Errorf("未知的内置 skill")
+	}
+	if err := checkManagedPaths(projectPath, name); err != nil {
+		return err
+	}
+	if err := ensureNoCustomSkillFiles(projectPath, name); err != nil {
+		return err
+	}
 	name = sanitizeSkillName(name)
 	if name == "" {
 		return fmt.Errorf("skill 名称不能为空")
@@ -196,6 +223,14 @@ func Uninstall(projectPath string, name string) error {
 	// 只删除内置清单中的命令文件，不碰用户自建命令。
 	commandsDir := projectCommandsDir(projectPath)
 	for _, fileName := range commandFileNames(name) {
+		expected, _ := builtinFS.ReadFile(path.Join(builtinRoot, name, commandsDirName, fileName))
+		current, readErr := os.ReadFile(filepath.Join(commandsDir, fileName))
+		if readErr == nil && !bytes.Equal(current, expected) {
+			continue
+		}
+		if readErr != nil && !os.IsNotExist(readErr) {
+			return readErr
+		}
 		if err := os.Remove(filepath.Join(commandsDir, fileName)); err != nil && !os.IsNotExist(err) {
 			return fmt.Errorf("移除命令文件失败: %w", err)
 		}
@@ -258,6 +293,9 @@ func copyEmbeddedDir(embedDir string, targetDir string, skipDir string) error {
 		if err != nil {
 			return err
 		}
+		if err := backupBeforeReplace(target, data); err != nil {
+			return err
+		}
 		return os.WriteFile(target, data, 0o644)
 	})
 }