Initial GeoIntel V1 foundation

backend/app/schemas/area.py

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+from __future__ import annotations
+
+from datetime import datetime
+from uuid import UUID
+
+from pydantic import BaseModel
+
+
+class AreaCreate(BaseModel):
+    name: str
+    geometry: dict
+    crs: str | None = "EPSG:4326"
+
+
+class AreaUpdate(BaseModel):
+    name: str | None = None
+    crs: str | None = None
+
+
+class AreaRead(BaseModel):
+    id: UUID
+    project_id: UUID
+    name: str
+    original_crs: str | None
+    area_m2: float | None
+    created_at: datetime | None = None
+    geometry_type: str | None = None
+
+    model_config = {"from_attributes": True}
+
+
+class AreaListItem(AreaRead):
+    pass
+
+
+class AreaList(BaseModel):
+    items: list[AreaRead]
+    total: int
+    limit: int
+    offset: int