feat: implement PDF page parsing, text extraction, and document modeling logic

gateway/app/routers/documents/content.py

@@ -112,6 +112,7 @@ def get_document_annotations(document_id: str) -> list[AnnotationResponse]:
                         timestamp=getattr(a, "timestamp", None),
                         pageIndex=a.page_index,
                         paths=[[{"x": p.x, "y": p.y} for p in stroke] for stroke in getattr(a, "paths", [])],
+                        quadPoints=getattr(a, "quad_points", []),
                         fieldName=getattr(a, "field_name", None),
                         fieldValue=getattr(a, "field_value", None),
                         fieldType=getattr(a, "field_type", None),

gateway/app/schemas/annotation.py

@@ -14,6 +14,7 @@ class AnnotationResponse(BaseModel):
     timestamp: str | None = None
     pageIndex: int
     paths: list[list[dict[str, float]]] = []
+    quadPoints: list[list[dict[str, float]]] = []
 
     fieldName: str | None = None
     fieldValue: str | None = None