Squashfs versioning:
- ISO now contains filesystem-v<VERSION>.squashfs instead of the generic
filesystem.squashfs, making it immediately visible which build is
running (visible in /run/live/medium/live/ at boot time).
- Full build path: rename filesystem.squashfs → filesystem-v*.squashfs
after lb build, before lb binary_checksums/binary_iso.
- Fast path: find and unpack whatever filesystem*.squashfs exists, repack
as the new versioned name, remove the old file, update the ISO.
- needs_full_build: accept any filesystem*.squashfs so version changes
alone don't force a full rebuild.
Media selection hardening:
- Add live-media=/dev/disk/by-label/<LABEL> to the kernel boot line in
addition to the existing live-media-label=<LABEL>. live-boot will now
open exactly the labeled device rather than scanning all block devices,
preventing accidental use of squashfs files from local disks or
stale virtual media attached via IPMI.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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