portabilitylisted

# /anvil:portability Audit the repo's shell and package choices against the distro families it claims to support. This is the check shellcheck cannot perform: shellcheck reads one script against one shell and has no opinion about whether `/usr/bin/btrfs` exists on Fedora. ## Scope Same test as `/anvil:check`: a machine definition, a devenv environment, or a `scripts/` tree. Otherwise say so and stop. ## Audit Read the tree against the `shell-portability` skill's trap list. That list is the plugin's real payload: every entry came from a failure observed on a real machine. Package names are never recalled from memory. Read each distro's package database through `forge:web-browsing`, per the `parity` skill. ## Report Every finding carries a file, a line, the exact string, the family it breaks on, and a loud-or-silent verdict. A finding without a line number is not a finding. This machine runs one family: mark every finding about a family it did not run as unverified, in the report and in any commit body drafted from it, per the `parity` skill's honesty rule.