- Dockerfile: install bincraft into each R minor, run a primary pass plus a
sensitive-only pass under every other /opt/R/[0-9]* minor (deduped by minor),
probe/skip xvfb, set GIT_TERMINAL_PROMPT=0; extra-minor failures are non-fatal.
- build-one.R: add --sensitive-only mode, log + shallow-clone the ABI classify
step, and clear cranlike's stale ./PACKAGES.db before each index refresh
(workaround for the "table packages already exists" bug; pending cranlike fix).