Merge pull request #1912 from CEED/jeremy/copyright

minor - update copyright to 2026

minor - update copyright to 2026

Merge pull request #1786 from CEED/jeremy/copy-headers

minor - upate copyright to 2025

minor - upate copyright to 2025

Merge pull request #1696 from CEED/jeremy/jit-include

JiT include update

qf - prefer ceed/types.h over ceed.h in qf source

Merge pull request #1110 from CEED/zach/entropy-variables

Add Entropy Variables to libCEED fluids NS mini-app

fluids: Proliferate entropy variables, add test

Co-authored-by: Zach Atkins <zacharyjayhawk@gmail.com>

Merge pull request #1605 from CEED/jrwrigh/idl_explicit

fluids: Add IDL to RHSFunction_Newtonian

fluids: Add IDL to RHSFunction_Newtonian

Merge pull request #1566 from CEED/jrwrigh/blasius_state

fluids: Use State in blasius context

fluids: Use StatePrimitive in blasius context

Merge pull request #1553 from CEED/jrwrigh/ns_stabilized_mass

fluids: Add stabilized mass operator for Newtonian

refactor(fluids): Use QdataUnpack in Newtonian RHS

fluids: Add stabilized mass matrix to newtonian

Testing with:
```
build/fluids-navierstokes -options_file ./examples/fluids/gaussianwave.yaml -dm_plex_box_faces 10,10,1 -ts_max_steps 500 -degree 2

fluids: Add stabilized mass matrix to newtonian

Testing with:
```
build/fluids-navierstokes -options_file ./examples/fluids/gaussianwave.yaml -dm_plex_box_faces 10,10,1 -ts_max_steps 500 -degree 2 -implicit false -ts_type rk -stab supg -ts_dt 1e-4 -implicit false -ts_monitor_solution cgns:gaussian_wave.cgns -ts_monitor_solution_interval 5 -ts_view -state_var conservative -mass_ksp_type gmres -ts_monitor -mass_pc_type jacobi -mass_pc_jacobi_type diagonal
```

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Merge pull request #1550 from CEED/jrwrigh/consistent_fluids_qf

refactor(fluids): Make QF comments consistent

refactor(fluids): Make QF comments consistent

See discussion: https://github.com/CEED/libCEED/pull/1539#discussion_r1548312418

Merge pull request #1539 from CEED/jrwrigh/explicit_ns

fluids: Make Newtonian BCs compatible with explicit timestepping, add test

fluids: Misc style changes

fluids: Make BCs compatible with explicit TS

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all sin

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all singly included headers

* jit - drop most guards on backend JiT files

* sycl - drop extra header guards

* jit - enable #pragma once for QF source

* fluids - use #pragma once for util/helper qf source

* test - check different multiple includes

* fluids - fix odd include

* jit - update interface for building JiT string from multiple files

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Merge pull request #1537 from CEED/jeremy/pragma-once

Use #pragma once for non-JiT headers

minor - update copyright headers

Drop Coordinate Basis from IJacobian (without breaking IDL) (#1380)

* compute IDL coefficient in IFunction that has access to coordinates, append this to jac_data so that IJacobian can avoid pulling

Drop Coordinate Basis from IJacobian (without breaking IDL) (#1380)

* compute IDL coefficient in IFunction that has access to coordinates, append this to jac_data so that IJacobian can avoid pulling coordinates through basis to apply IDL

Co-authored-by: James Wright <james@jameswright.xyz>

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Merge pull request #1371 from CEED/kjansen/DropPotentialFromEtot

Drop Potential Energy from Etot conservation variable