… V8 --jitless
2.6 GB to 1.3 GB final image
Flip arm64 matrix back to ubicloud-standard-8 so both arches share one
runner fleet. Cross-arch TCG on an amd64 host previously SIGTRAP'd in
migrations because V8's JIT emitted arm64 instructions that QEMU's
cross-arch translator mis-handled; pair the existing -cpu cortex-a72
fallback with NODE_OPTIONS=--jitless on the migration docker exec to
force V8 to stay on the interpreter. Does not affect amd64 migrations
(KVM, no TCG).
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## Summary by CodeRabbit
* **Chores**
* Optimized emulator images with binary stripping, compression, and
preservation of standalone runtime dependencies.
* Improved multi-architecture build matrix, added optional KVM
detection/fallback, and gated certain emulator runtime steps for arm64.
* Enhanced build scripts to generate and include env files and persist
richer logs and artifacts.
* **New Features**
* Centralized provision entrypoint to streamline install → migrations →
slimming sequence.
* **Tests**
* Added a fast QEMU serial boot test for architecture validation.
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