refactor(core): align with cordis spatiotemporal composability architecture

- Purify core micro-kernel by removing context hardcoded helpers and reverse dependencies
- Eliminate init() side effects in infra plugins with reversible lifecycle disposal
- Completely isolate plugins by removing cross-plugin imports and using core/contracts
- Introduce TaskService and RiskControlService contracts for unified cross-plugin APIs
- Regenerate Swagger documentation and update developer guide matrix
- Achieve 0 violations in check_cordis_architecture.sh and 100% test pass

backend/plugins/domain/upload/stats/stats_counter.go

@@ -7,11 +7,12 @@ import (
 	"context"
 	"time"
 
-	"Wavelet/pkg/logger"
-	"Wavelet/plugins/domain/upload/models"
-	database "Wavelet/plugins/infra/database"
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
+
+	"Wavelet/pkg/logger"
+	"Wavelet/plugins/domain/upload/models"
+	"Wavelet/plugins/domain/upload/shared"
 )
 
 // ApplyUploadStatsAdd increments incremental stats for a newly active upload record.
@@ -26,7 +27,7 @@ func ApplyUploadStatsRemove(ctx context.Context, upload *models.Upload) error {
 
 // RebuildUploadStats rebuilds all incremental stats from current upload records.
 func RebuildUploadStats(ctx context.Context) error {
-	return database.DB(ctx).Transaction(func(tx *gorm.DB) error {
+	return shared.GetDB(ctx).Transaction(func(tx *gorm.DB) error {
 		if err := tx.Where("1 = 1").Delete(&models.UploadStat{}).Error; err != nil {
 			return err
 		}
@@ -49,7 +50,7 @@ func applyUploadStatsDelta(ctx context.Context, upload *models.Upload, sign int6
 	if upload == nil || !isActiveUploadStatus(upload.Status) {
 		return nil
 	}
-	return database.DB(ctx).Transaction(func(tx *gorm.DB) error {
+	return shared.GetDB(ctx).Transaction(func(tx *gorm.DB) error {
 		return ApplyUploadStatsDeltaTx(tx, upload, sign)
 	})
 }

backend/plugins/domain/upload/stats/stats_counter_test.go

@@ -8,15 +8,36 @@ import (
 	"testing"
 	"time"
 
+	"gorm.io/gorm"
+
 	"Wavelet/pkg/testhelper"
 	"Wavelet/plugins/domain/upload/models"
-	database "Wavelet/plugins/infra/database"
-	"gorm.io/gorm"
+	"Wavelet/plugins/domain/upload/shared"
 )
 
+type mockDBService struct {
+	db *gorm.DB
+}
+
+func (m *mockDBService) GORM() *gorm.DB {
+	return m.db
+}
+
+func (m *mockDBService) DB(ctx context.Context) *gorm.DB {
+	return m.db.WithContext(ctx)
+}
+
+func (m *mockDBService) Named(_ string) *gorm.DB {
+	return m.db
+}
+
 func TestApplyUploadStatsDeltaTxWithinTransaction(t *testing.T) {
-	_, _, cleanup := testhelper.SetupTestEnvironment(t)
-	defer cleanup()
+	dbConn, _, cleanup := testhelper.SetupTestEnvironment(t)
+	shared.SetDBService(&mockDBService{db: dbConn})
+	defer func() {
+		shared.SetDBService(nil)
+		cleanup()
+	}()
 	ctx := context.Background()
 
 	upload := &models.Upload{
@@ -29,7 +50,7 @@ func TestApplyUploadStatsDeltaTxWithinTransaction(t *testing.T) {
 		CreatedAt: time.Now(),
 	}
 
-	if err := database.DB(ctx).Transaction(func(tx *gorm.DB) error {
+	if err := shared.GetDB(ctx).Transaction(func(tx *gorm.DB) error {
 		return ApplyUploadStatsDeltaTx(tx, upload, 1)
 	}); err != nil {
 		t.Fatalf("ApplyUploadStatsDeltaTx returned error: %v", err)
@@ -45,8 +66,12 @@ func TestApplyUploadStatsDeltaTxWithinTransaction(t *testing.T) {
 }
 
 func TestApplyUploadStatsAddAndRemove(t *testing.T) {
-	_, _, cleanup := testhelper.SetupTestEnvironment(t)
-	defer cleanup()
+	dbConn, _, cleanup := testhelper.SetupTestEnvironment(t)
+	shared.SetDBService(&mockDBService{db: dbConn})
+	defer func() {
+		shared.SetDBService(nil)
+		cleanup()
+	}()
 	ctx := context.Background()
 
 	upload := &models.Upload{
@@ -90,7 +115,7 @@ type uploadStatsSnapshot struct {
 
 func loadUploadStats(ctx context.Context) (uploadStatsSnapshot, error) {
 	var rows []models.UploadStat
-	if err := database.DB(ctx).Where("dimension = ?", models.UploadStatDimensionTotal).Find(&rows).Error; err != nil {
+	if err := shared.GetDB(ctx).Where("dimension = ?", models.UploadStatDimensionTotal).Find(&rows).Error; err != nil {
 		return uploadStatsSnapshot{}, err
 	}
 	if len(rows) == 0 {