feat: bind provider IDs in WeCom/DingTalk/Lark syncers (#5033)

object/syncer_dingtalk.go

@@ -426,6 +426,7 @@ func (p *DingtalkSyncerProvider) dingtalkUserToOriginalUser(dingtalkUser *Dingta
 		Address:     []string{},
 		Properties:  map[string]string{},
 		Groups:      []string{},
+		DingTalk:    dingtalkUser.UserId, // Link DingTalk provider account
 	}
 
 	// Add department IDs to Groups field

object/syncer_lark.go

@@ -376,6 +376,7 @@ func (p *LarkSyncerProvider) larkUserToOriginalUser(larkUser *LarkUser) *Origina
 		Address:     []string{},
 		Properties:  map[string]string{},
 		Groups:      []string{},
+		Lark:        larkUser.UserId, // Link Lark provider account
 	}
 
 	// Set avatar if available

object/syncer_user.go

@@ -70,6 +70,18 @@ func (syncer *Syncer) updateUserForOriginalFields(user *User, key string) (bool,
 
 	columns := syncer.getCasdoorColumns()
 	columns = append(columns, "affiliation", "hash", "pre_hash")
+
+	// Add provider-specific field for API-based syncers to enable login binding
+	// This allows synced users to login via their provider accounts
+	switch syncer.Type {
+	case "WeCom":
+		columns = append(columns, "wecom")
+	case "DingTalk":
+		columns = append(columns, "dingtalk")
+	case "Lark":
+		columns = append(columns, "lark")
+	}
+
 	affected, err := ormer.Engine.Where(key+" = ? and owner = ?", syncer.getUserValue(&oldUser, key), oldUser.Owner).Cols(columns...).Update(user)
 	if err != nil {
 		return false, err

object/syncer_wecom.go

@@ -275,6 +275,7 @@ func (p *WecomSyncerProvider) wecomUserToOriginalUser(wecomUser *WecomUser) *Ori
 		Address:     []string{},
 		Properties:  map[string]string{},
 		Groups:      []string{},
+		Wecom:       wecomUser.UserId, // Link WeCom provider account
 	}
 
 	// Set gender