main/mhd-magfield_streamsurface/task_description.txt

Load the MHD magnetic field dataset from "mhd-magfield_streamsurface/data/mhd-magfield_streamsurface.vti" (VTI format, 128x128x128 grid with components bx, by, bz). 
Generate a stream surface seeded from a line source along the y-axis at x=64, z=64 (from y=20 to y=108), with 30 seed points. 
The stream surface should be traced in both forward and backward directions along the magnetic field lines. 
Color the stream surface by magnetic field magnitude using the 'Cool to Warm' colormap. Enable surface lighting with specular reflection for better 3D perception. 
Add a color bar labeled 'Magnetic Field Magnitude'. 
Use a dark navy background (RGB: 0.0, 0.0, 0.12). Set an isometric camera view. Render at 1024x1024 resolution.
Save the paraview state as "mhd-magfield_streamsurface/results/{agent_mode}/mhd-magfield_streamsurface.pvsm".
Save the visualization image as "mhd-magfield_streamsurface/results/{agent_mode}/mhd-magfield_streamsurface.png".
(Optional, if use python script) Save the python script as "mhd-magfield_streamsurface/results/{agent_mode}/mhd-magfield_streamsurface.py".
Do not save any other files, and always save the visualization image.