fix(persistence): migrate all pkg/persistence imports to plugins/infra/database and plugins/infra/cache

- Replace db.DB(ctx) with database.DB(ctx) from plugins/infra/database
- Replace db.Redis/db.PrefixedKey/db.GetJSON/db.SetJSON with cachepkg.* from plugins/infra/cache
- Replace pkg/persistence/idgen with pkg/idgen (already exists)
- Replace pkg/persistence/batchwriter with pkg/batchwriter (already exists)
- Replace pkg/persistence/migrator with pkg/migrator (already exists)
- Replace pkg/persistence/logstore with plugins/domain/risk_control/logstore
- Delete defunct pkg/{persistence,cap,message_gateway,push,shared,task}
- Fix vet issues: db alias in domain_test.go, driver_asynq_worker.TaskHandler reference
- Update Makefile architecture guard
- Update docs and skill references
- Update go.mod: gorilla/sessions promotion to direct dependency

plugins/domain/upload/exports.go

@@ -4,7 +4,6 @@
 package upload
 
 import (
-	"github.com/Rain-kl/Wavelet/pkg/task"
 	"github.com/Rain-kl/Wavelet/plugins/domain/upload/cache"
 	"github.com/Rain-kl/Wavelet/plugins/domain/upload/filesrv"
 	"github.com/Rain-kl/Wavelet/plugins/domain/upload/handler"
@@ -12,6 +11,7 @@ import (
 	uploadstats "github.com/Rain-kl/Wavelet/plugins/domain/upload/stats"
 	uploadtask "github.com/Rain-kl/Wavelet/plugins/domain/upload/task"
 	"github.com/Rain-kl/Wavelet/plugins/domain/upload/util"
+	"github.com/Rain-kl/Wavelet/plugins/drivers/driver_asynq_worker"
 )
 
 // HTTP handlers
@@ -116,11 +116,11 @@ type WarmImageCachePayload = uploadtask.WarmImageCachePayload
 
 // Ensure task handler types implement required interfaces.
 var (
-	_ task.TaskHandler = (*MigrationHandler)(nil)
-	_ task.TaskHandler = (*SystemCleanupHandler)(nil)
-	_ task.TaskHandler = (*RebuildUploadStatsHandler)(nil)
+	_ driver_asynq_worker.TaskHandler = (*MigrationHandler)(nil)
+	_ driver_asynq_worker.TaskHandler = (*SystemCleanupHandler)(nil)
+	_ driver_asynq_worker.TaskHandler = (*RebuildUploadStatsHandler)(nil)
 	_ interface {
-		task.TaskHandler
+		driver_asynq_worker.TaskHandler
 		ValidatePayload([]byte) ([]byte, error)
 	} = (*WarmImageCacheHandler)(nil)
 )