Add container smoke acceptance

scripts/container_smoke.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env sh
+set -eu
+
+ROOT_DIR="$(CDPATH= cd -- "$(dirname -- "$0")/.." && pwd)"
+IMAGE="${GUIDE_BOARD_SMOKE_IMAGE:-guide-board-core:smoke}"
+RUNS_DIR="${GUIDE_BOARD_SMOKE_RUNS_DIR:-${TMPDIR:-/tmp}/guide-board-container-smoke-$$}"
+RUNTIME="${CONTAINER_RUNTIME:-}"
+
+if [ -z "$RUNTIME" ]; then
+  if command -v podman >/dev/null 2>&1; then
+    RUNTIME=podman
+  elif command -v docker >/dev/null 2>&1; then
+    RUNTIME=docker
+  else
+    echo "ERROR: podman or docker is required for the container smoke check." >&2
+    exit 127
+  fi
+fi
+
+mkdir -p "$RUNS_DIR"
+
+echo "==> Building $IMAGE with $RUNTIME"
+"$RUNTIME" build -t "$IMAGE" -f "$ROOT_DIR/Containerfile" "$ROOT_DIR"
+
+echo "==> Running bundled sample assessment"
+"$RUNTIME" run --rm \
+  -v "$RUNS_DIR:/runs" \
+  "$IMAGE" \
+  --root /opt/guide-board run \
+  --target /opt/guide-board/profiles/targets/sample-repository.json \
+  --assessment /opt/guide-board/profiles/assessments/sample-noop.json \
+  --output-dir /runs/sample-noop
+
+echo "==> Verifying mounted run artifacts"
+for path in \
+  "$RUNS_DIR/sample-noop/run.json" \
+  "$RUNS_DIR/sample-noop/plan.json" \
+  "$RUNS_DIR/sample-noop/retention-summary.json" \
+  "$RUNS_DIR/sample-noop/normalized/evidence.json" \
+  "$RUNS_DIR/sample-noop/normalized/findings.json" \
+  "$RUNS_DIR/sample-noop/normalized/mappings.json" \
+  "$RUNS_DIR/sample-noop/reports/assessment-package.json" \
+  "$RUNS_DIR/sample-noop/reports/report.md"
+do
+  if [ ! -f "$path" ]; then
+    echo "ERROR: expected artifact missing: $path" >&2
+    exit 1
+  fi
+done
+
+echo "Container smoke check passed."
+echo "Run artifacts: $RUNS_DIR/sample-noop"