Agents may declare git.user (name/email); it overlays the referenced
bottle's git.user per-field at Manifest.bottle_for (agent wins on
non-empty), mirroring the extends: merge. git.remotes is rejected on
agents — it carries credentials and host trust and stays bottle-only.
The overlay lives at bottle_for, the single chokepoint both backends
use, so the docker/smolmachines git provisioners are unchanged. Adds
Manifest.git_identity_summary with per-field (agent)/(bottle)
provenance, printed in both preflights and `info`.
Refs #94
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The two Debian-family CA-layout constants lived in
docker/provision/ca.py, which forced the smolmachines backend to
import them cross-backend (smolmachines -> docker). Move them into
the shared backend/util.py next to select_ca_cert; docker, compose,
and smolmachines now all import from there. No behavior change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Both backends' provision_ca duplicated _select_ca_cert and the
SHA-256 fingerprint computation verbatim. Lift them into the shared
backend/util.py as select_ca_cert + log_ca_fingerprint; docker and
smolmachines now call the shared helpers. No behavior change.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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