diff --git a/dbal/development/src/core/entities/lua-script/store/in-memory-store.ts b/dbal/development/src/core/entities/lua-script/store/in-memory-store.ts
new file mode 100644
index 000000000..8b62095fb
--- /dev/null
+++ b/dbal/development/src/core/entities/lua-script/store/in-memory-store.ts
@@ -0,0 +1,9 @@
+/**
+ * @file in-memory-store.ts
+ * @description In-memory store interface for Lua script operations (stub)
+ */
+
+export interface InMemoryStore {
+  luaScripts: Map<string, any>;
+  generateId(entityType: string): string;
+}
diff --git a/dbal/development/src/core/entities/lua-script/types.ts b/dbal/development/src/core/entities/lua-script/types.ts
new file mode 100644
index 000000000..396aaaaef
--- /dev/null
+++ b/dbal/development/src/core/entities/lua-script/types.ts
@@ -0,0 +1,30 @@
+/**
+ * @file types.ts
+ * @description Type definitions for Lua script operations (stub)
+ */
+
+export interface CreateLuaScriptInput {
+  name: string;
+  code: string;
+  description?: string;
+  isActive?: boolean;
+}
+
+export interface LuaScriptView {
+  id: string;
+  name: string;
+  code: string;
+  description?: string;
+  isActive: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface Result<T> {
+  success: boolean;
+  data?: T;
+  error?: {
+    code: string;
+    message: string;
+  };
+}
diff --git a/dbal/development/src/core/entities/package/store/in-memory-store.ts b/dbal/development/src/core/entities/package/store/in-memory-store.ts
new file mode 100644
index 000000000..03d2ea428
--- /dev/null
+++ b/dbal/development/src/core/entities/package/store/in-memory-store.ts
@@ -0,0 +1,10 @@
+/**
+ * @file in-memory-store.ts
+ * @description In-memory store interface for package operations (stub)
+ */
+
+export interface InMemoryStore {
+  packages: Map<string, any>;
+  packageIds: Map<string, string>;
+  generateId(entityType: string): string;
+}
diff --git a/dbal/development/src/core/entities/package/types.ts b/dbal/development/src/core/entities/package/types.ts
new file mode 100644
index 000000000..c942729fe
--- /dev/null
+++ b/dbal/development/src/core/entities/package/types.ts
@@ -0,0 +1,32 @@
+/**
+ * @file types.ts
+ * @description Type definitions for package operations (stub)
+ */
+
+export interface CreatePackageInput {
+  packageId: string;
+  name: string;
+  version?: string;
+  description?: string;
+  isPublished?: boolean;
+}
+
+export interface Package {
+  id: string;
+  packageId: string;
+  name: string;
+  version?: string;
+  description?: string;
+  isPublished: boolean;
+  createdAt: Date;
+  updatedAt: Date;
+}
+
+export interface Result<T> {
+  success: boolean;
+  data?: T;
+  error?: {
+    code: string;
+    message: string;
+  };
+}
diff --git a/dbal/development/src/core/entities/package/validation/validate-id.ts b/dbal/development/src/core/entities/package/validation/validate-id.ts
new file mode 100644
index 000000000..6fab3f6ce
--- /dev/null
+++ b/dbal/development/src/core/entities/package/validation/validate-id.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-id.ts
+ * @description ID validation (stub)
+ */
+
+export const validateId = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};
diff --git a/dbal/development/src/core/entities/package/validation/validate-package-create.ts b/dbal/development/src/core/entities/package/validation/validate-package-create.ts
new file mode 100644
index 000000000..a7b5f6cd2
--- /dev/null
+++ b/dbal/development/src/core/entities/package/validation/validate-package-create.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-package-create.ts
+ * @description Package creation validation (stub)
+ */
+
+export const validatePackageCreate = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};
diff --git a/dbal/development/src/core/entities/package/validation/validate-package-update.ts b/dbal/development/src/core/entities/package/validation/validate-package-update.ts
new file mode 100644
index 000000000..dfe4ce6b3
--- /dev/null
+++ b/dbal/development/src/core/entities/package/validation/validate-package-update.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-package-update.ts
+ * @description Package update validation (stub)
+ */
+
+export const validatePackageUpdate = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};
diff --git a/dbal/development/src/core/entities/user/validation/validate-id.ts b/dbal/development/src/core/entities/user/validation/validate-id.ts
new file mode 100644
index 000000000..6fab3f6ce
--- /dev/null
+++ b/dbal/development/src/core/entities/user/validation/validate-id.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-id.ts
+ * @description ID validation (stub)
+ */
+
+export const validateId = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};
diff --git a/dbal/development/src/core/entities/user/validation/validate-user-create.ts b/dbal/development/src/core/entities/user/validation/validate-user-create.ts
new file mode 100644
index 000000000..4c48289aa
--- /dev/null
+++ b/dbal/development/src/core/entities/user/validation/validate-user-create.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-user-create.ts
+ * @description User creation validation (stub)
+ */
+
+export const validateUserCreate = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};
diff --git a/dbal/development/src/core/entities/user/validation/validate-user-update.ts b/dbal/development/src/core/entities/user/validation/validate-user-update.ts
new file mode 100644
index 000000000..57d528fa0
--- /dev/null
+++ b/dbal/development/src/core/entities/user/validation/validate-user-update.ts
@@ -0,0 +1,9 @@
+/**
+ * @file validate-user-update.ts
+ * @description User update validation (stub)
+ */
+
+export const validateUserUpdate = (input: any): string[] => {
+  // Stub validation that always returns empty errors
+  return [];
+};