`build-ci v3`: Update Infra For `spack v1`#9

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CodeGat wants to merge 6 commits intogtracersfrom

infra-update-v3

Commits on Nov 17, 2025

infra: Update to v3
CodeGat
committed

Commits on Dec 4, 2025

[no-ci] infra: Update to spack v1.1
CodeGat
committed

Commits on Feb 17, 2026

Update comments
CodeGat
committed

Commits on Mar 11, 2026

Update to toolchains
CodeGat
committed

Commits on Mar 13, 2026

Build-CI: Use 'stable' spack version in manifests
dougiesquire
committed

Commits on Apr 30, 2026

Change to rebuild
CodeGat
committed