added final ERD diagram

prompts/diagrama-ERD.md

@@ -0,0 +1,115 @@
+```Mermaid
+erDiagram
+  COMPANY {
+      int id PK
+      string name
+  }
+  EMPLOYEE {
+      int id PK
+      int company_id FK
+      string name
+      string email
+      string role
+      boolean is_active
+  }
+  POSITION {
+      int id PK
+      int company_id FK
+      int interview_flow_id FK
+      string title
+      text description
+      string status
+      boolean is_visible
+      string location
+      text job_description
+      text requirements
+      text responsibilities
+      numeric salary_min
+      numeric salary_max
+      string employment_type
+      text benefits
+      text company_description
+      date application_deadline
+      string contact_info
+  }
+  INTERVIEW_FLOW {
+      int id PK
+      string description
+  }
+  INTERVIEW_STEP {
+      int id PK
+      int interview_flow_id FK
+      int interview_type_id FK
+      string name
+      int order_index
+  }
+  INTERVIEW_TYPE {
+      int id PK
+      string name
+      text description
+  }
+  CANDIDATE {
+      int id PK
+      string first_name
+      string last_name
+      string email
+      string phone
+      string address
+  }
+  APPLICATION {
+      int id PK
+      int position_id FK
+      int candidate_id FK
+      date application_date
+      string status
+      text notes
+  }
+  INTERVIEW {
+      int id PK
+      int application_id FK
+      int interview_step_id FK
+      int employee_id FK
+      date interview_date
+      string result
+      int score
+      text notes
+  }
+  EDUCATION {
+      int id PK
+      string institution
+      string title
+      date start_date
+      date end_date
+      int candidate_id FK
+  }
+  WORK_EXPERIENCE {
+      int id PK
+      string company
+      string position
+      string description
+      date start_date
+      date end_date
+      int candidate_id FK
+  }
+  RESUME {
+      int id PK
+      string file_path
+      string file_type
+      date upload_date
+      int candidate_id FK
+  }
+
+  COMPANY ||--o{ EMPLOYEE : employs
+  COMPANY ||--o{ POSITION : offers
+  POSITION ||--|| INTERVIEW_FLOW : assigns
+  INTERVIEW_FLOW ||--o{ INTERVIEW_STEP : contains
+  INTERVIEW_STEP ||--|| INTERVIEW_TYPE : uses
+  POSITION ||--o{ APPLICATION : receives
+  CANDIDATE ||--o{ APPLICATION : submits
+  APPLICATION ||--o{ INTERVIEW : has
+  INTERVIEW ||--|| INTERVIEW_STEP : consists_of
+  EMPLOYEE ||--o{ INTERVIEW : conducts
+  CANDIDATE ||--o{ EDUCATION : has
+  CANDIDATE ||--o{ WORK_EXPERIENCE : has
+  CANDIDATE ||--o{ RESUME : uploads
+```