Reorganize app workspaces and align Admin architecture

docs/core-modules/auth/backend.md

@@ -5,7 +5,7 @@ The backend Auth module exposes token-based admin authentication routes.
 Source root:
 
 ```txt
-backend/app/base_modules/Auth/
+apps/backend/app/base_modules/Auth/
 ```
 
 ## Routes
@@ -19,7 +19,7 @@ backend/app/base_modules/Auth/
 Route file:
 
 ```txt
-backend/app/base_modules/Auth/routes.ts
+apps/backend/app/base_modules/Auth/routes.ts
 ```
 
 ## Request Flow
@@ -51,7 +51,7 @@ GET /auth/user
 Login validator:
 
 ```txt
-backend/app/base_modules/Auth/validators/auth_login_validator.ts
+apps/backend/app/base_modules/Auth/validators/auth_login_validator.ts
 ```
 
 Current rules:
@@ -64,13 +64,13 @@ Current rules:
 Auth config:
 
 ```txt
-backend/config/auth.ts
+apps/backend/config/auth.ts
 ```
 
 The admin model is configured as the token user provider:
 
 ```txt
-backend/app/base_modules/Admin/model/admin.ts
+apps/backend/app/base_modules/Admin/model/admin.ts
 ```
 
 ## Response Contracts