modernize-preflight
Installation
SKILL.md
Check whether this environment can analyze — and eventually modernize — the
system $system, and tell the user exactly what to fix before the other
commands run into it. Modernization runs fail late and confusingly when this is
skipped: metrics silently degrade without analysis tools, tests can't run
without a build toolchain, and dependency maps come out wrong when half the
source isn't in the tree.
Run every check even when an early one fails — the point is one complete readiness report, not the first error.
Where the code lives
The code is legacy/$system: a copy, or a symlink to where it really lives (how a large repository stays
put). Nothing is ever copied for you.