Add teams + team ownership (schema + API)

backend/app/schemas/org.py

@@ -13,10 +13,23 @@ class DepartmentUpdate(SQLModel):
     head_employee_id: int | None = None
 
 
+class TeamCreate(SQLModel):
+    name: str
+    department_id: int
+    lead_employee_id: int | None = None
+
+
+class TeamUpdate(SQLModel):
+    name: str | None = None
+    department_id: int | None = None
+    lead_employee_id: int | None = None
+
+
 class EmployeeCreate(SQLModel):
     name: str
     employee_type: str
     department_id: int | None = None
+    team_id: int | None = None
     manager_id: int | None = None
     title: str | None = None
     status: str = "active"
@@ -30,6 +43,7 @@ class EmployeeUpdate(SQLModel):
     name: str | None = None
     employee_type: str | None = None
     department_id: int | None = None
+    team_id: int | None = None
     manager_id: int | None = None
     title: str | None = None
     status: str | None = None

backend/app/schemas/projects.py

@@ -6,8 +6,10 @@ from sqlmodel import SQLModel
 class ProjectCreate(SQLModel):
     name: str
     status: str = "active"
+    team_id: int | None = None
 
 
 class ProjectUpdate(SQLModel):
     name: str | None = None
     status: str | None = None
+    team_id: int | None = None