Added admin page

backend/src/models.py

@@ -20,7 +20,52 @@ class UserInfo(BaseModel):
     full_name: Optional[str] = None
     db_user_id: Optional[int] = None  # Database user ID (populated after login)
     role: Optional[str] = None  # User role name
-    role_id: Optional[int] = None  # User role ID (1=admin, 2=auditor, 3=user, etc.)
+    role_id: Optional[int] = None  # User role ID (1=editor, 2=auditor, 3=admin)
+
+
+# Role schemas
+ROLE_DISPLAY_NAMES = {
+    "editor": "Editor",
+    "auditor": "Auditor", 
+    "admin": "Project Admin"
+}
+
+
+class RoleResponse(BaseModel):
+    """Response schema for a role."""
+    id: int
+    role_name: str
+    display_name: str
+
+    class Config:
+        from_attributes = True
+
+    @classmethod
+    def from_role(cls, role) -> "RoleResponse":
+        """Create a RoleResponse from a Role model."""
+        return cls(
+            id=role.id,
+            role_name=role.role_name,
+            display_name=ROLE_DISPLAY_NAMES.get(role.role_name, role.role_name.title())
+        )
+
+
+class ProjectMemberResponse(BaseModel):
+    """Response schema for a project member with role info."""
+    id: int
+    sub: str
+    role_id: int
+    role_name: str
+    role_display_name: str
+    created_at: Optional[datetime] = None
+
+    class Config:
+        from_attributes = True
+
+
+class UserRoleUpdateRequest(BaseModel):
+    """Request schema for updating a user's role."""
+    role_id: int
 
 
 # Project schemas
@@ -215,6 +260,13 @@ class RelationshipTypeCreateRequest(BaseModel):
     inverse_type_name: Optional[str] = None
 
 
+class RelationshipTypeUpdateRequest(BaseModel):
+    """Request schema for updating a relationship type."""
+    type_name: Optional[str] = None
+    type_description: Optional[str] = None
+    inverse_type_name: Optional[str] = None
+
+
 # Requirement Link schemas
 class LinkedRequirementInfo(BaseModel):
     """Brief info about a linked requirement."""