builder caches BR2_DL_DIR (/tmp/builder-dl) under a monthly key (date +%m), and
actions/cache only saves on a key miss, so the first build of the month freezes it for
weeks. Packages pinned to a moving ref (VERSION = HEAD/branch, or the majestic-webui
`dist` release asset) download as a constant <pkg>-<ref>.tar.gz, so buildroot keeps
reusing the stale tarball — defeating the clean firmware-HEAD re-clone builder does for
freshness.
Empirically, a 2026-06-14 builder nightly shipped a ~2-week-old majestic-webui (full
bootstrap.min.css, no mj-settings.js) while the firmware nightly of the same day shipped
the current slim UI. Drop *-{HEAD,master,main,dist}.tar.gz before each build (master.yml
+ build-one.yml) so buildroot re-fetches the current ref. Mirrors the same fix in
OpenIPC/firmware.
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
