Pallas projective msm inline - #4
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…se field `PVes` gains a type parameter (`PVes F`), and every operation and lemma is stated over an arbitrary `[Field F]` in place, under its original name. The completeness arguments take the single hypothesis `hy0 : ∀ x, ¬ OnCurve 0 5 (x, 0)` (no 2-torsion), from which `2 ≠ 0` and `5 ≠ 0` are derived; the bridge to the affine group takes the curve `E` with `E.A = 0`, `E.B = 5`. `[DecidableEq F]` is assumed only by the computable declarations that branch on field equality. `paddFast` stays Vesta-only. Vesta call sites in `MsmProj` and `ProjectiveMontEquiv` pass `Vesta.curve rfl rfl` and `Vesta.no_onCurve_y_zero`; `TrustBoundary`'s census is unchanged. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUVBzWdyPZ8AWYoGVYADs6
…ield Every definition and lemma is stated in place, under its original name, over `PVes F` and a curve `E` with `E.A = 0`, `E.B = 5`, threading the no-2-torsion hypothesis `hy0` through the `_spec` lemmas exactly as `Projective.lean` does. The `commit_lagrange` wrappers stay Vesta-specific and pass `Vesta.curve rfl rfl` / `Vesta.no_onCurve_y_zero`; `ProjectiveMontEquiv` passes the same facts at its one `pwindowValueFast_spec` call. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01TUVBzWdyPZ8AWYoGVYADs6
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