feat(stats): optimize dashboard data loading with internal ui endpoints

app/api/dto/tasks.py

@@ -140,3 +140,33 @@ class TaskExportRowDTO(BaseModel):
     created_at: datetime
     started_at: datetime | None = None
     done_at: datetime | None = None
+
+
+class TaskBoardItemDTO(BaseModel):
+    model_config = ConfigDict(extra="forbid", frozen=True)
+
+    id: UUID
+    title: str = Field(..., min_length=1, max_length=100)
+    status: TaskStatus
+    display_date_label: str = Field(..., min_length=1, max_length=20)
+    display_date_value: datetime | None = None
+
+
+class TaskBoardDTO(BaseModel):
+    model_config = ConfigDict(extra="forbid", frozen=True)
+
+    backlog_tasks: list[TaskBoardItemDTO]
+    in_progress_tasks: list[TaskBoardItemDTO]
+    done_tasks: list[TaskBoardItemDTO]
+
+
+class TaskDetailsDTO(BaseModel):
+    model_config = ConfigDict(extra="forbid", frozen=True)
+
+    id: UUID
+    title: str = Field(..., min_length=1, max_length=100)
+    status: TaskStatus
+    created_at: datetime
+    started_at: datetime | None = None
+    done_at: datetime | None = None
+    cycle_time: str