feat: 品牌重命名 Sub2API -> TianShuAPI

- 前端: 所有界面显示、i18n 文本、组件中的品牌名称
- 后端: 服务层、设置默认值、邮件模板、安装向导
- 数据库: 迁移脚本注释
- 保持功能完全一致，仅更改品牌名称

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

backend/internal/repository/update_cache_integration_test.go

@@ -1,73 +1,73 @@
-//go:build integration
-
-package repository
-
-import (
-	"errors"
-	"testing"
-	"time"
-
-	"github.com/redis/go-redis/v9"
-	"github.com/stretchr/testify/require"
-	"github.com/stretchr/testify/suite"
-)
-
-type UpdateCacheSuite struct {
-	IntegrationRedisSuite
-	cache *updateCache
-}
-
-func (s *UpdateCacheSuite) SetupTest() {
-	s.IntegrationRedisSuite.SetupTest()
-	s.cache = NewUpdateCache(s.rdb).(*updateCache)
-}
-
-func (s *UpdateCacheSuite) TestGetUpdateInfo_Missing() {
-	_, err := s.cache.GetUpdateInfo(s.ctx)
-	require.True(s.T(), errors.Is(err, redis.Nil), "expected redis.Nil for missing update info")
-}
-
-func (s *UpdateCacheSuite) TestSetAndGetUpdateInfo() {
-	updateTTL := 5 * time.Minute
-	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.2.3", updateTTL), "SetUpdateInfo")
-
-	info, err := s.cache.GetUpdateInfo(s.ctx)
-	require.NoError(s.T(), err, "GetUpdateInfo")
-	require.Equal(s.T(), "v1.2.3", info, "update info mismatch")
-}
-
-func (s *UpdateCacheSuite) TestSetUpdateInfo_TTL() {
-	updateTTL := 5 * time.Minute
-	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.2.3", updateTTL))
-
-	ttl, err := s.rdb.TTL(s.ctx, updateCacheKey).Result()
-	require.NoError(s.T(), err, "TTL updateCacheKey")
-	s.AssertTTLWithin(ttl, 1*time.Second, updateTTL)
-}
-
-func (s *UpdateCacheSuite) TestSetUpdateInfo_Overwrite() {
-	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.0.0", 5*time.Minute))
-	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v2.0.0", 5*time.Minute))
-
-	info, err := s.cache.GetUpdateInfo(s.ctx)
-	require.NoError(s.T(), err)
-	require.Equal(s.T(), "v2.0.0", info, "expected overwritten value")
-}
-
-func (s *UpdateCacheSuite) TestSetUpdateInfo_ZeroTTL() {
-	// TTL=0 means persist forever (no expiry) in Redis SET command
-	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v0.0.0", 0))
-
-	info, err := s.cache.GetUpdateInfo(s.ctx)
-	require.NoError(s.T(), err)
-	require.Equal(s.T(), "v0.0.0", info)
-
-	ttl, err := s.rdb.TTL(s.ctx, updateCacheKey).Result()
-	require.NoError(s.T(), err)
-	// TTL=-1 means no expiry, TTL=-2 means key doesn't exist
-	require.Equal(s.T(), time.Duration(-1), ttl, "expected TTL=-1 for key with no expiry")
-}
-
-func TestUpdateCacheSuite(t *testing.T) {
-	suite.Run(t, new(UpdateCacheSuite))
-}
+//go:build integration
+
+package repository
+
+import (
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/redis/go-redis/v9"
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type UpdateCacheSuite struct {
+	IntegrationRedisSuite
+	cache *updateCache
+}
+
+func (s *UpdateCacheSuite) SetupTest() {
+	s.IntegrationRedisSuite.SetupTest()
+	s.cache = NewUpdateCache(s.rdb).(*updateCache)
+}
+
+func (s *UpdateCacheSuite) TestGetUpdateInfo_Missing() {
+	_, err := s.cache.GetUpdateInfo(s.ctx)
+	require.True(s.T(), errors.Is(err, redis.Nil), "expected redis.Nil for missing update info")
+}
+
+func (s *UpdateCacheSuite) TestSetAndGetUpdateInfo() {
+	updateTTL := 5 * time.Minute
+	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.2.3", updateTTL), "SetUpdateInfo")
+
+	info, err := s.cache.GetUpdateInfo(s.ctx)
+	require.NoError(s.T(), err, "GetUpdateInfo")
+	require.Equal(s.T(), "v1.2.3", info, "update info mismatch")
+}
+
+func (s *UpdateCacheSuite) TestSetUpdateInfo_TTL() {
+	updateTTL := 5 * time.Minute
+	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.2.3", updateTTL))
+
+	ttl, err := s.rdb.TTL(s.ctx, updateCacheKey).Result()
+	require.NoError(s.T(), err, "TTL updateCacheKey")
+	s.AssertTTLWithin(ttl, 1*time.Second, updateTTL)
+}
+
+func (s *UpdateCacheSuite) TestSetUpdateInfo_Overwrite() {
+	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v1.0.0", 5*time.Minute))
+	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v2.0.0", 5*time.Minute))
+
+	info, err := s.cache.GetUpdateInfo(s.ctx)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), "v2.0.0", info, "expected overwritten value")
+}
+
+func (s *UpdateCacheSuite) TestSetUpdateInfo_ZeroTTL() {
+	// TTL=0 means persist forever (no expiry) in Redis SET command
+	require.NoError(s.T(), s.cache.SetUpdateInfo(s.ctx, "v0.0.0", 0))
+
+	info, err := s.cache.GetUpdateInfo(s.ctx)
+	require.NoError(s.T(), err)
+	require.Equal(s.T(), "v0.0.0", info)
+
+	ttl, err := s.rdb.TTL(s.ctx, updateCacheKey).Result()
+	require.NoError(s.T(), err)
+	// TTL=-1 means no expiry, TTL=-2 means key doesn't exist
+	require.Equal(s.T(), time.Duration(-1), ttl, "expected TTL=-1 for key with no expiry")
+}
+
+func TestUpdateCacheSuite(t *testing.T) {
+	suite.Run(t, new(UpdateCacheSuite))
+}