Keep Mongo operations online across Vault credential rotation

backend/shared/database/dependencies/dependencies.go

@@ -2,19 +2,19 @@ package mongo
 
 import (
 	"git.sendico.io/tech/sxchnge/shared/database"
+	"git.sendico.io/tech/sxchnge/shared/database/source"
 	"git.sendico.io/tech/sxchnge/shared/database/transaction"
 	"git.sendico.io/tech/sxchnge/shared/errors"
-	"go.mongodb.org/mongo-driver/v2/mongo"
 )
 
 // Dependencies resolves local DB/transaction primitives for edge-local store wiring only.
 type Dependencies struct {
-	Database     *mongo.Database
+	Database     source.Source
 	Transactions transaction.Factory
 }
 
 type DatabaseProvider interface {
-	MongoDatabase() *mongo.Database
+	MongoDatabase() source.Source
 }
 
 func ResolveDependencies(dbf db.Factory) (*Dependencies, error) {