Upgrade instructions

From #7359 (Importer: unify with exporter library to speed up interpolation):

In input files that import numeric data, wrap importer options in a VolumeData: block and add the new options ExtrapolateIntoExcisions: False and NumThreads: 1.

From #7347 (Add unopinionated AGENTS.md):

If you already have an AGENTS.md, rename it to AGENTS.local.md.

From #7409 (Enable runtime LTS):

For evolutions using global time stepping (for CCE, see below), there are several new input file options:

Evolution:

LocalTimeStepping: Off

This option should be "Off" to retain previous behavior. Most evolution executables now support "Conservative" mode as well.

Evolution:
  LtsStepChoosers:
  VariableOrderAlgorithm:
    GoalOrder: 3

These options are ignored with local time-stepping off, but must have valid values, such as those given here.

EventsAndTriggersAtSteps:

This is similar to the existing EventsAndTriggersAtSlabs. It is recommended that evolutions not using local time-stepping leave this blank.

Evolution:
  InitialTimeStep: &initial_time_step 0.001
  InitialSlabSize: *initial_time_step

The new InitialSlabSize option must have the same value as the existing InitialTimeStep option. This can be ensured using YAML references as shown here.

For evolutions using local time-stepping, including CCE, there is a single new option:

Evolution:

LocalTimeStepping: Conservative

For non-CCE evolutions, "Off" is now also supported.

From #7314 (Add option for number of shells in distorted frame):

The Sphere and SphericalShell domains now contain a new option under TimeDependentMaps called NumberOfRadialShellsWithShapeMap. Set it to auto to keep the old behavior (only the innermost radial partition gets the shape map`. You can also choose to set this it to a nonnegative integer no greater than one less than the number of partitions (the outermost partition is not allowed to have a shape map in this implementation, becauase in practice we always want the outer boundary to be a sphere, not a deformed sphere...that's the whole reason for the shape map rolling off to the identity).

Merged pull-requests (76)

New features (4):

CCE: allow specifying InitializeJ from input file for analytic runs (#7352)
CCE: add the first two Newman-Penrose Bianchi identity constraints (#7345)
Introduce higher-order FD for ValenciaDivClean (#6801)
CCE: make CauchySecondOrder angular-solve threshold an option (#7470)

CLI & Python bindings (1):

NumericalAlgorithms: add SpinWeightedSphericalHarmonics python bindings (#7344)

General changes (65):

Add Guido Da Re's metadata information (#7343)
Use no-avx512 only on not ARM64 (#7348)
Add kappa and zeta to 3D EoS (#7257)
Add second covariant derivative of scalar field in ScalarTensor. (#7318)
Add second covariant derivative of the coupling function in EsGB gravity (#7319)
Create cartoon-type BC for ValenciaDivClean (#7269)
B3 radial filtering (#7282)
Add prefix tag for spatial covariant derivatives and the Lie derivative with respect to the normal vector (#7323)
Store buffer in Filters::FilledCylinder (#7356)
Add ChangeFixedLtsRatio for adaptivity in equal-rate regions (#7334)
Add runtime checks for TimeStepper properties (#7342)
Update CartoonCylinder creator to use ZernikeB1 and internal BCs (#7267)
Use spherical shells for inner spheres in CBCO (#7346)
Remove DarkEnergyFluid EoS (#7350)
CCE-fix: compute Dy(H) on demand as an observation compute tag (#7365)
Handle -march=native on all supported platforms (#7358)
Add B3 support to CardinalInterpolator (#7265)
Make CBCO input file h and p refinement format same as BCO (#7360)
Add error message for nonmonotonic times in WorldtubeBufferUpdater (#7363)
Add hp projections for spherical shells (#7355)
Importer: unify with exporter library to speed up interpolation (#7359)
Add unopinionated AGENTS.md (#7347)
Support LDG infrastructure part two (#7375)
StepChooser-related changes for GTS-LTS unification (#7379)
Support LDG infrastructure part one (#7374)
Make various LTS things runtime no-ops in GTS mode (#7380)
Reduce Spectral compile time/memory (#7377)
Update connectivity for B3 (#7327)
Add waveform extraction to the bbh pipeline (#7271)
Add B3 support for IrregularInterpolant (#7370)
Enable observing normalized GH constraint energy (#7340)
Add B3 definite integral (#7371)
Add method to force runtime-LTS off in metavars (#7384)
Hypertorus (#7383)
Allow any coding agent in PR template co-author checklist (#7395)
Remove LTS check from ElementWeight parser (#7391)
Use LtsMode for mortar initialization/projecting (#7393)
Support LDG infrastructure part three (#7378)
Support LDG infrastructure part four (#7385)
Add spherical shell filtering to ScalarWave (#7368)
Add subcell reconstruction for ZernikeB1 (#7349)
Create CartoonGhost BC for GhValenciaDivClean system (#7366)
Create CylindricalFlatEndcapInterior map (#7373)
Create CylindricalSphericalShell map (#7386)
Disable OpenMP when running tests (#7407)
Add initial guesses for scalar field in scalar-tensor theories (#7367)
Final miscellaneous preparation for runtime LTS (#7399)
Enable runtime LTS (#7409)
Add option for number of shells in distorted frame (#7314)
Add UniformCardinalBSpline (#7388)
brigand: Prevent invalid instantiations in erase (#7401)
Some AMR topology fixes (#7394)
Support filled / hollow sphere mortar equality (#7398)
Bump CodingAgents container to NPM 24 for latest claude (#7462)
Cache component name hash in ArrayComponentId (#7390)
Add gr::Solutions::HighSpinKerrPuncture (#7392)
Fix random failures it Worldtube IterateAccelerationTerms (#7465)
Update fetched Yaml-Cpp and XSIMD version (#7464)
Add SoScalarWave system part one (#7403)
Support LDG infrastructure part five (#7402)
Fix on_interface basis assumptions (#7466)
Remove std::reference_wrapper dependencies in coordinate maps (#7460)
Enable CCE for ARM deployment in CI (#7364)
Pass parity to ValenciaDivClean subcell volume projections (#7472)
Add SoScalarWave system part two (#7405)

Documentation (1):

CCE: update base input file initial data (#7351)

Bugfixes (5):

Fix bug in ZernikeB2 mortar mesh check (#7357)
CCE: raise second-order init-data test iteration cap to 1000 (#7354)
CCE: compute Dy<BondiH> for volume output (#7353)
Center CBCO OuterSphere at origin (#7406)
Return zero vector for zero horizon spin (#7474)

Contributors (15): @gda98re, @nilsdeppe, @EmilyWang0130, @FabrizioCorelli, @michaeldmurphy1, @wthrowe, @macedo22, @kidder, @geoffrey4444, @JosePineda684, @nilsvu, @hen-w, @nikwit, @ncorsobh, @hrueter