Deterministic Porous-canopy aerodynamic drag moment M_wind = 0.5*rho*Cd_crown*A_proj*v^2 * H_ce vs restoring gravity moment M_stab = (m_pot + m_ballast)*g*(B_base/2) engine (.pdf, .svg, .json) built for Serralunga, Vondom, Lechuza, Gardena — zero-upload ephemeral Wasm RAM execution.
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