Rescue Paperjet v1 implementation

backend/app/api/v1/debug.py

@@ -28,28 +28,28 @@ async def verify_coords(req: VerifyCoordsRequest):
 
     try:
         doc = pymupdf.open(filepath)
-    except Exception as e:
-        raise HTTPException(status_code=500, detail=str(e))
+    except Exception as error:
+        raise HTTPException(status_code=500, detail=str(error)) from error
 
     if req.page < 0 or req.page >= len(doc):
         doc.close()
         raise HTTPException(status_code=400, detail="Invalid page number")
 
     page = doc[req.page]
-    
+
     # Canonical space is defined as relative to the unrotated CropBox.
     # PyMuPDF naturally draws relative to the current rotation.
     # By temporarily setting rotation to 0, we can draw directly using canonical coordinates.
     original_rotation = page.rotation
     if original_rotation != 0:
         page.set_rotation(0)
-    
+
     rect = pymupdf.Rect(req.x, req.y, req.x + req.width, req.y + req.height)
     page.draw_rect(rect, color=(1, 0, 0), width=2, fill=(1, 0, 0), fill_opacity=0.3)
-    
+
     if original_rotation != 0:
         page.set_rotation(original_rotation)
-    
+
     pdf_bytes = doc.write()
     doc.close()