Replace the fragile Python regex patch (which failed to match the actual
awk variable name in mkarchiso) with a mkfs.fat wrapper script placed
earlier in PATH. The wrapper intercepts every -C (create) invocation and
adds +128 MiB (131072 KiB) to the size argument, ensuring the ~50 MB
ARM64 kernel Image + FAT filesystem overhead fits regardless of which
exact size formula the installed mkarchiso version uses.
Also adds a grep of mkarchiso's size lines to stdout so the formula is
visible in build logs for future debugging.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
nmemmertandClaude Sonnet 4.6
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