Generate line-table debug info in release builds and split it into
a separate .debug file. The shipped binary remains stripped (same
size as before), while the .debug files are attached to GitHub
releases for both amd64 and arm64 EE builds.
This enables production debugging with gdb/perf by copying the
matching .debug file into a running pod.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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