chore(Geometry/Manifold/MFDeriv): golf using custom elaborators

[grunweg]

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Split out from #30357.

[github-actions]

PR summary 94c81ed7d9

Import changes for modified files

Dependency changes

File	Base Count	Head Count	Change
Mathlib.Geometry.Manifold.MFDeriv.FDeriv	2218	2219	+1 (+0.05%)
Mathlib.Geometry.Manifold.MFDeriv.Atlas	2234	2235	+1 (+0.04%)
Mathlib.Geometry.Manifold.MFDeriv.UniqueDifferential	2235	2236	+1 (+0.04%)
Mathlib.Geometry.Manifold.MFDeriv.Tangent	2238	2239	+1 (+0.04%)

Import changes for all files

Files

Import difference

30 files Mathlib.Analysis.Complex.UpperHalfPlane.Manifold Mathlib.Geometry.Manifold.ContMDiffMFDeriv Mathlib.Geometry.Manifold.Diffeomorph Mathlib.Geometry.Manifold.Instances.Icc Mathlib.Geometry.Manifold.IntegralCurve.Basic Mathlib.Geometry.Manifold.IntegralCurve.ExistUnique Mathlib.Geometry.Manifold.IntegralCurve.Transform Mathlib.Geometry.Manifold.IntegralCurve.UniformTime Mathlib.Geometry.Manifold.LocalDiffeomorph Mathlib.Geometry.Manifold.MFDeriv.Atlas Mathlib.Geometry.Manifold.MFDeriv.FDeriv Mathlib.Geometry.Manifold.MFDeriv.NormedSpace Mathlib.Geometry.Manifold.MFDeriv.SpecificFunctions Mathlib.Geometry.Manifold.MFDeriv.Tangent Mathlib.Geometry.Manifold.MFDeriv.UniqueDifferential Mathlib.Geometry.Manifold.PoincareConjecture Mathlib.Geometry.Manifold.Riemannian.Basic Mathlib.Geometry.Manifold.Riemannian.PathELength Mathlib.Geometry.Manifold.VectorBundle.Hom Mathlib.Geometry.Manifold.VectorBundle.MDifferentiable Mathlib.Geometry.Manifold.VectorBundle.Riemannian Mathlib.Geometry.Manifold.VectorField.Pullback Mathlib.NumberTheory.ModularForms.Basic Mathlib.NumberTheory.ModularForms.Bounds Mathlib.NumberTheory.ModularForms.EisensteinSeries.Basic Mathlib.NumberTheory.ModularForms.EisensteinSeries.MDifferentiable Mathlib.NumberTheory.ModularForms.LevelOne Mathlib.NumberTheory.ModularForms.NormTrace Mathlib.NumberTheory.ModularForms.Petersson Mathlib.NumberTheory.ModularForms.QExpansion

1

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Declarations diff

+-+- mdifferentiableAt

You can run this locally as follows

## summary with just the declaration names:
./scripts/pr_summary/declarations_diff.sh <optional_commit>

## more verbose report:
./scripts/pr_summary/declarations_diff.sh long <optional_commit>

The doc-module for scripts/pr_summary/declarations_diff.sh contains some details about this script.

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No changes to technical debt.

You can run this locally as

./scripts/reporting/technical-debt-metrics.sh pr_summary

• The relative value is the weighted sum of the differences with weight given by the inverse of the current value of the statistic.
• The absolute value is the relative value divided by the total sum of the inverses of the current values (i.e. the weighted average of the differences).