The agent (a static Go binary) was a separately-named opt-in stage gated by
FEATURE_ZOT=NO, so baseline builds shipped colibri without its agent. It is
really a component of colibri, not its own product surface — so name and stage
it under the colibri umbrella.
- build.cfg: remove FEATURE_ZOT; add internal COLIBRI_STAGE_AGENT (default YES,
undocumented escape hatch for daemon-only debug builds). Keep ZOT_REPO/
ZOT_VERSION as internal staging inputs (they point at the real agent repo+tag).
- build.sh: preflight + install now gate on FEATURE_COLIBRI (and the hidden
COLIBRI_STAGE_AGENT), banner folds the agent into the Colibri line, messages
use colibri-agent naming.
- README: agent harness presented under the colibri control plane; pi retained
as a spawnable agent backend rather than the default harness.
Behavior change for the builder: with FEATURE_COLIBRI=YES (default) the agent
now stages on baseline builds, so preflight FAILS if the agent binary is not
prebuilt in $ZOT_REPO/bin. Build it first (GOOS=freebsd go build -o bin/zot
./cmd/zot) or pass COLIBRI_STAGE_AGENT=NO for a daemon-only image.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
