October 2025 release

Update handling of atlas halos and halo exchanges (#2593)

* Remove a redundant toFieldSet call in CostPert

* Clarify QG comments on atlas geometry

* Fix double-counting of ghost points in FieldSet dot product helper

* Update halo handling: remove unnecessary haloExchange calls from helpers

* Update halo handling: set dirty flag in helpers

* Make divideFieldSets more robust

* Update halo handling: add halo exchanges to LocalInterpolators

* Remove unnecessary dirty flag

* Update UnstructuredInterpolator test for addition of halo exchange inside interpolator

* Update halo handling: remove synchronizeFieldsAD method

* Update atlas-interface tests for new halo handling

* Rework halo exchanges to live outside of LocalInterpolator

* attempt 1

* Move halo exchanges outside of GetValues loop over obs types

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Co-authored-by: Marek Wlasak <[email protected]>
Co-authored-by: Anna Shlyaeva <[email protected]>
Co-authored-by: Yannick Trémolet <[email protected]>

Revert "Add sanity checks on interpolator argument FunctionSpaces (#2…

…492)" (#2505)

This reverts commit 707db55.

Tighten stripack's tolerances for geometric checks (#2501)

Updating ErrorCovariance multiply() to do cross time covariance (#2374)

* 4DEnVar increments output

* Change output filenames for increments (omit "increment")

* starting work on doing 4D covariance for static B

* implementing cross time covariances for 4DEnVar

* adding comm_ private variable, some include statements, and UCAR copyright

* fixing geometry variable name

* fixing coding norms

* one last whitespace for coding norms

* removing unnecessary files

* Adding test for crosstime covariances using single obs

* adding files for new test

* updating name of testdata file

* adding updated output for 4dEnVar tests

* updating yamls which failed in parallel due to serialize issue

* adding new test reference for saddlepoint test

* Fix Weak-constraint 4DVar + remove need for saving communicator

* making vector a const variable

* updating test and reference to have more detectable residual

* removing generation of test output from yaml, updating test output

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Co-authored-by: Anna Shlyaeva <[email protected]>

remove models ewok repo (#2210)

Co-authored-by: Yannick Trémolet <[email protected]>

Version: 1.6.0 (#2155)

just the templates (#2010)

Merge pull request #1940 from JCSDA-internal/release/skylab-v2

Release/skylab v2

Merge pull request #1811 from JCSDA-internal/develop

Update main branch from develop