Harden kernel gradient correction - #1291

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svchb wants to merge 9 commits into

trixi-framework:mainfrom

svchb:fix/kernel-correction-lifecycle

Codecov / codecov/patch failed Aug 27, 2026 in 0s

85.99% of diff hit (target 90.49%)

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85.99% of diff hit (target 90.49%)

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