Fix CI for WPILib 2027 alpha toolchain#14

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nlaverdure wants to merge 15 commits into

main-2027-alpha2from

ci/2027-alpha2-toolchain

Commits on Jun 11, 2026

Update CI workflows for WPILib 2027 alpha toolchain

nlaverdure
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claude
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Revert spotless.yml JDK bump — 17 is sufficient

nlaverdure
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claude
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Bump GitHub Actions to v5 for Node.js 24 compatibility

nlaverdure
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claude
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Switch build CI to actions/setup-java JDK 21 (no 2027 container yet)

nlaverdure
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claude
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Switch CI runner to ubuntu-24.04 for GLIBCXX_3.4.31 support

nlaverdure
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claude
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Switch build CI to wpilib/systemcore-cross-ubuntu:2027-24.04 container

nlaverdure
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claude
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Switch runner to ubuntu-latest; container provides the toolchain

nlaverdure
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claude
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Split CI into separate SystemCore and simulation workflows

nlaverdure
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claude
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Fix simulation CI hanging by adding 30s timeout

nlaverdure
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claude
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Fix simulation CI: grep for startup message instead of timeout; add Gradle cache

nlaverdure
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claude
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Skip spotless in systemcore build; spotless.yml handles formatting

nlaverdure
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claude
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Fix simulation CI hanging: kill process group after startup detected

nlaverdure
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claude
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Print simulation log to CI output after startup

nlaverdure
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claude
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Fix simulation CI exit 143: use setsid to isolate Gradle process group

nlaverdure
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claude
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Simplify simulation CI: assemble and test only, no sim execution

nlaverdure
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claude
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