- Implement complete bootc label support for apt-ostree compose container-encapsulate
- Add containers.bootc, ostree.bootable, ostree.commit, ostree.linux, aptostree.inputhash labels
- Add smart kernel version detection from OSTree tree structure
- Fix container-encapsulate command routing and argument parsing
- Update CHANGELOG.md with bootc label documentation
This enables full compatibility with bootc-image-builder and the broader bootc ecosystem.
