refactor(bootstrap): move runtime init from router to cmd layer

Extract SyncEvents and InitLogWriter from router.Serve into bootstrap.Init
called from cmd entry points with trace-aware context. Preserve existing
Register* wiring for task and push domain integrations.

internal/router/router.go

@@ -15,13 +15,10 @@ import (
 	"syscall"
 	"time"
 
-	admin_push "github.com/Rain-kl/Wavelet/internal/apps/admin/push"
 	"github.com/Rain-kl/Wavelet/internal/apps/risk_control"
 	router_root "github.com/Rain-kl/Wavelet/internal/router/root"
 	v1 "github.com/Rain-kl/Wavelet/internal/router/v1"
 
-	// Swagger 文档生成
-	_ "github.com/Rain-kl/Wavelet/internal/apps/admin/push/custom_events"
 	"github.com/Rain-kl/Wavelet/internal/apps/oauth"
 	"github.com/Rain-kl/Wavelet/internal/config"
 	otel_trace "github.com/Rain-kl/Wavelet/pkg/trace"
@@ -38,14 +35,6 @@ func Serve() {
 		gin.SetMode(gin.ReleaseMode)
 	}
 
-	// 初始化 ClickHouse 异步日志写入器
-	risk_control.InitLogWriter()
-
-	// 运行内置事件同步
-	if err := admin_push.SyncEvents(context.Background()); err != nil {
-		log.Printf("[API] sync push events failed: %v\n", err)
-	}
-
 	// 初始化路由
 	r := gin.New()
 	r.Use(gin.Recovery())