App installer feeds are the update path; the MSStore flow is parked.
publish-win32-store is now a dummy skip (ubuntu notice step, kept in the
dependency graph so nothing downstream changes), and build-win32 no
longer builds the store variant (--variant=store removed). The r2
staging loop's Store-* archive branch and the store-bundle script stay
in the tree, documented, for re-enable.
Verified: yaml parses, needs graph resolves, no --variant=store remains
in the build step.
f437776030