🧪 Peacock Spider Fan Dance Courtship (2D)

This 2D companion swaps the 3D scene for a plain top-down canvas built to read the courtship mechanic directly: the male walks to a dance spot, raises his fan, and a running performance-quality score chases a target set by the sync-target slider, a sine-wave wobble and a penalty from female sensitivity — the same formula driving the 3D version. When the dance ends, quality is checked against an acceptance threshold that also scales with female sensitivity; clear it and the female accepts, miss it and she lunges while the male tries to escape. Tapping the drum button (or clicking the dancing male) adds a real bonus straight onto the quality score, mirroring the abdomen-drumming vibration signal real peacock spiders use mid-display.