feat: 为应用版本查询增加appCode参数支持

新增应用版本类型的AppCode字段，修改相关接口和实现以支持通过appCode查询指定应用的最新版本，增加appCode合法性校验，完善缓存键以区分不同应用的版本信息

server/store/store.go

@@ -171,7 +171,7 @@ type AdminInternalConfigProvider interface {
 	ListActiveTenants(limit int) ([]types.Tenant, error)
 	RegistrationSMSEnabled() (bool, error)
 	ThirdPartyConfig(group string, keys ...string) (map[string]string, error)
-	LatestAppRelease(platform, channel string) (*types.AppRelease, error)
+	LatestAppRelease(appCode, platform, channel string) (*types.AppRelease, error)
 	ModerationProvider() (*types.ModerationProviderConfig, error)
 	ModerationPolicy(tenantCode string) (*types.ModerationPolicy, error)
 	SensitiveWords(tenantCode string) (*types.SensitiveWordSet, error)
@@ -2654,20 +2654,21 @@ type profileMapper struct{}
 var Profiles ProfilePersistenceInterface
 
 type AppReleasePersistenceInterface interface {
-	Latest(platform, channel string) (*types.AppRelease, error)
+	Latest(appCode, platform, channel string) (*types.AppRelease, error)
 }
 
 type appReleaseMapper struct{}
 
 var AppReleases AppReleasePersistenceInterface
 
-func (appReleaseMapper) Latest(platform, channel string) (*types.AppRelease, error) {
+func (appReleaseMapper) Latest(appCode, platform, channel string) (*types.AppRelease, error) {
 	platform = strings.ToLower(strings.TrimSpace(platform))
 	channel = strings.ToLower(strings.TrimSpace(channel))
-	if platform == "" || channel == "" {
+	appCode = strings.ToLower(strings.TrimSpace(appCode))
+	if platform == "" || channel == "" || appCode == "" {
 		return nil, types.ErrMalformed
 	}
-	cacheKey := platform + ":" + channel
+	cacheKey := appCode + ":" + platform + ":" + channel
 	if cached, ok := appReleaseConfigCache.get(cacheKey); ok {
 		copy := *cached
 		return &copy, nil
@@ -2675,7 +2676,7 @@ func (appReleaseMapper) Latest(platform, channel string) (*types.AppRelease, err
 	if adminInternalConfigProvider == nil {
 		return nil, types.ErrUnsupported
 	}
-	release, err := adminInternalConfigProvider.LatestAppRelease(platform, channel)
+	release, err := adminInternalConfigProvider.LatestAppRelease(appCode, platform, channel)
 	if err != nil {
 		return nil, err
 	}

server/store/types/profile.go

@@ -56,6 +56,7 @@ type UserPrivacyPatch struct {
 
 type AppRelease struct {
 	ID                  int64
+	AppCode             string
 	Platform            string
 	Channel             string
 	LatestVersion       string