standard constant

The shipped values (certified at the Task A1 tree): the Task 17c constants (edge lens from Task 15c, size-dependent frost/fill from 17b, frost wide tail from 17c) plus the 17d additions (tone LUT, small dark-shape tone lift, clear lens grid, anisotropic frost), the A1 continuous-corner outline and the g13 colour refit (fitted regular/regularDark tone LUTs, fill/saturation/tint), fitted by the NumPy model (tool/fidelity/fit.py) against SwiftUI screenshots of tool/scenes/scenes.json. Device-certified on the reference simulator: 55/75 scenes pass, median SSIM 0.9830 / median ΔE 1.29, min SSIM 0.9525, 0 scenes below 0.95 (75 in-set scenes). The g13 refit adds a small-shape tone curve: shapes whose half shorter side is at or below 32 pt get the small tone LUT at full weight, fading linearly to off at 34 pt (SwiftUI's small glass has a steeper tone response, Task g13). Per-set and per-scene numbers, and the known residuals, live in docs/superpowers/notes/fidelity-status.md — cite that note, not per-set numbers here.