feat: update chat, settings, prompts and system info modules

backend/internal/config/config.go

@@ -26,6 +26,7 @@ type Config struct {
 	SkillsDir        string
 	SkillsDisabledDir string
 	ExtensionsDir    string
+	PromptsDir       string
 	FrontendDist     string // ../frontend/dist 相对于可执行文件
 }
 
@@ -88,6 +89,7 @@ func (c *Config) derivePaths() {
 	c.SkillsDir = filepath.Join(a, "skills")
 	c.SkillsDisabledDir = filepath.Join(a, "skills-disabled")
 	c.ExtensionsDir = filepath.Join(a, "extensions")
+	c.PromptsDir = filepath.Join(a, "prompts")
 
 	// frontend/dist 相对于二进制所在目录的上级
 	exe, err := os.Executable()