feat: sync visible product branding

Sync telesrv c779c48 (feat(branding): unify visible product naming).

Skipped private www files and preserved public README files; mapped orange appearance seed names to public default names.

internal/domain/branding_test.go

@@ -0,0 +1,20 @@
+package domain
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestServiceIdentityAndLoginMessageUseTelesrvBrand(t *testing.T) {
+	serviceUser := OfficialSystemUser()
+	if serviceUser.FirstName != "Telesrv" || serviceUser.Username != "telesrv" {
+		t.Fatalf("service user = %+v, want Telesrv identity", serviceUser)
+	}
+	message, err := OfficialLoginCodeMessage(42, "12345", 1)
+	if err != nil {
+		t.Fatalf("build login message: %v", err)
+	}
+	if !strings.Contains(message.Body, "Telesrv") || strings.Contains(strings.ToLower(message.Body), "telegram") {
+		t.Fatalf("login message exposes wrong brand: %q", message.Body)
+	}
+}

internal/domain/login_code_delivery.go

@@ -4,11 +4,13 @@ import (
 	"fmt"
 	"math"
 	"strings"
+
+	"telesrv/internal/branding"
 )
 
-const officialLoginCodeMessageTemplate = `Login code: %s. Do not give this code to anyone, even if they say they are from Telegram!
+const officialLoginCodeMessageTemplate = `Login code: %s. Do not give this code to anyone, even if they say they are from ` + branding.ProductName + `!
 
-This code can be used to log in to your Telegram account. We never ask it for anything else.
+This code can be used to log in to your ` + branding.ProductName + ` account. We never ask it for anything else.
 
 If you didn't request this code by trying to log in on another device, simply ignore this message.`
 

internal/domain/system.go

@@ -1,5 +1,7 @@
 package domain
 
+import "telesrv/internal/branding"
+
 const (
 	// OfficialSystemUserID 是 Telegram 兼容客户端识别的官方系统账号。
 	OfficialSystemUserID int64 = 777000
@@ -27,8 +29,8 @@ func OfficialSystemUser() User {
 		ID:         OfficialSystemUserID,
 		AccessHash: 6599886787491911851,
 		Phone:      "42777",
-		FirstName:  "Telegram",
-		Username:   "telegram",
+		FirstName:  branding.ProductName,
+		Username:   branding.ProductUsername,
 		Verified:   true,
 		Support:    true,
 	}