flowchart TD
  User[کاربر] --> API[API]
  API --> alerts[alerts]
  API --> analytics[analytics]
  API --> app-module-ts[app.module.ts]
  API --> audit[audit]
  API --> auth[auth]
  API --> buildings[buildings]
  API --> catalogs[catalogs]
  API --> common[common]
  API --> elevators[elevators]
  API --> envelope-ts[envelope.ts]
  API --> events[events]
  API --> faults[faults]
  alerts --> Data[(Data Store)]
  analytics --> Data[(Data Store)]
  app-module-ts --> Data[(Data Store)]
  audit --> Data[(Data Store)]
  auth --> Data[(Data Store)]
  buildings --> Data[(Data Store)]
  catalogs --> Data[(Data Store)]
  common --> Data[(Data Store)]

sequenceDiagram
  participant U as User
  participant C as Controller
  participant S as Service
  participant D as Database
  U->>C: HTTP Request
  C->>S: invoke handler
  S->>D: query/update
  D-->>S: result
  S-->>C: DTO
  C-->>U: HTTP Response