feat(builder): query CI via project status script

When BUILD_VENUE=ci, init confirms tea/glab/gh/curl (or a custom
command) and writes .pouch/builder/ci-status.sh. wait_ci.sh only
polls that script and no longer guesses forge CLIs.

skills/builder/scripts/init_ci_status.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Copy a CI status template into the project.
+# Usage: init_ci_status.sh --root DIR --kind tea|glab|gh|curl
+
+usage() {
+  echo "Usage: init_ci_status.sh --root DIR --kind tea|glab|gh|curl" >&2
+}
+
+root=
+kind=
+while (($#)); do
+  case "$1" in
+    --root) [[ $# -ge 2 ]] || { usage; exit 2; }; root=$2; shift 2 ;;
+    --kind) [[ $# -ge 2 ]] || { usage; exit 2; }; kind=$2; shift 2 ;;
+    -h|--help) usage; exit 0 ;;
+    *) usage; exit 2 ;;
+  esac
+done
+
+if [[ -z "$root" || -z "$kind" ]]; then
+  usage
+  exit 2
+fi
+case "$kind" in
+  tea|glab|gh|curl) ;;
+  *) echo "Error: --kind must be tea, glab, gh, or curl" >&2; exit 2 ;;
+esac
+
+script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+src=$script_dir/../templates/ci-status/${kind}.sh
+if [[ ! -f "$src" ]]; then
+  echo "Error: missing template: $src" >&2
+  exit 2
+fi
+
+dest=$root/.pouch/builder/ci-status.sh
+mkdir -p "$(dirname "$dest")"
+cp "$src" "$dest"
+chmod +x "$dest"
+echo "$dest"