feat(scrape): add verify-operator-ready host checks

One command validates compose, auth, config, and seeded archives before
bootstrap or cron. Includes offline smoke test (14 smokes total).

scripts/tests/verify-operator-ready-smoke.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+
+REPO_ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd -P)
+VERIFY="$REPO_ROOT/scripts/verify-operator-ready.sh"
+TMP_DIR=$(mktemp -d "${TMPDIR:-/tmp}/dce-op-ready-smoke.XXXXXX")
+ARCHIVE_ROOT="$TMP_DIR/archive"
+CONFIG_PATH="$TMP_DIR/config.json"
+ENV_PATH="$TMP_DIR/scrape.env"
+FAKE_DOCKER="$TMP_DIR/docker"
+PATH_BACKUP="$PATH"
+
+cleanup() {
+  export PATH="$PATH_BACKUP"
+  rm -rf "$TMP_DIR"
+}
+trap cleanup EXIT
+
+mkdir -p "$ARCHIVE_ROOT/demo"
+printf '{"messages":[{"id":"1"}],"channel":{"id":"111111111111111111"}}\n' \
+  >"$ARCHIVE_ROOT/demo/Guild - general [111111111111111111].json"
+
+cat >"$CONFIG_PATH" <<JSON
+{
+  "archive_root": "$ARCHIVE_ROOT",
+  "targets": [
+    {
+      "name": "demo",
+      "kind": "guild",
+      "output_dir": "$ARCHIVE_ROOT/demo",
+      "enabled": true
+    }
+  ]
+}
+JSON
+
+printf 'DISCORD_TOKEN=dummy\n' >"$ENV_PATH"
+
+cat >"$FAKE_DOCKER" <<'EOF'
+#!/usr/bin/env bash
+if [[ "${1:-}" == "compose" && "${2:-}" == "version" ]]; then
+  exit 0
+fi
+exit 1
+EOF
+chmod +x "$FAKE_DOCKER"
+export PATH="$TMP_DIR:$PATH_BACKUP"
+
+DCE_REPO_ROOT="$REPO_ROOT" DCE_CONFIG_FILE="$CONFIG_PATH" DCE_ENV_FILE="$ENV_PATH" \
+  "$VERIFY" --config "$CONFIG_PATH"
+
+if DCE_REPO_ROOT="$REPO_ROOT" DCE_CONFIG_FILE="$CONFIG_PATH" DCE_ENV_FILE="$ENV_PATH" \
+  "$VERIFY" --config "$CONFIG_PATH" --preflight demo 2>/dev/null; then
+  printf 'ERROR: preflight should fail without real container/token\n' >&2
+  exit 1
+fi
+
+printf 'verify-operator-ready-smoke: ok\n'