FX.77 Studio and browser-edition packers: stale file lists (suite stubs, hub files, docinfo and About modules)

Found by mounts-09 2026-11-06 while building the Studio suite for the undo test. (1) studio/pack/suite-stubs.php WORKSPACE_MODULES lacked app-workspace-icons.js and app-workspace-vector.js, so node pack/suite.mjs stopped with "a plain re-render differs from the edition's index.html" for every app: a Studio rebuild could not have been made. (2) pack/suite.mjs HUB_FILES did not copy the new hub/undo-journal.js. (3) tools/shell-test/test-packed-imports.mjs failed 6 checks: devshell/edition.php and devshell/pack.php lacked docinfo.js, app-docinfo.js and app-about.js (DI.1, ABT.1), so packaged editions would have asked for files that are not there. All three lists fixed; the suite packs for cadcraft, detailcraft and takeoffcraft and the test reports "all packers list every imported shell file". The full eight-app suite was not rebuilt here.