Symmetric Pixel Grid Art

2D canvas, 400x400, black background, no anti-aliasing, pixel-perfect. 100 tiny white points (radius 2-3) arranged in a symmetric grid with 4-fold rotational symmetry, mirrored over x and y axes at integer coordinates, connected by white lines (stroke weight 4-6) to nearest neighbors only. Varied shapes (circles with diameter 10-20, triangles with side 15, squares with side 12) placed at grid intersections, symmetrically rotated, no fill, white stroke. Symmetry enforced via D4 group (rotations 90° and reflections), drawn once with mirrored copies. Minimal structure with no curves or gradients.