restored entire zip and config'd

worker-toolkit-potion-polyglot/explore/.devcontainer/apply-dns-jail.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# Trial parity: limit DNS to the model endpoint and the toolkit's telemetry, so a session
+# captured here cannot depend on network the trial agent will not have. Opt-in, best-effort.
+#
+# Its own lifecycle step, NOT part of post-start.sh: post-create.sh calls post-start to get
+# postgres up before it installs the repo's dependencies, so a jail applied there breaks
+# `bundle install` on every fresh container. postStartCommand runs after postCreateCommand.
+set -u
+
+[ -f /workspace/.devcontainer/dns-jail.sh ] || exit 0
+# Read the one line rather than sourcing: with the jail off this must not execute the
+# worker's .env as a side effect.
+if [ "${RACCOON_DNS_JAIL:-0}" != "1" ] &&
+    ! grep -qE '^[[:space:]]*(export[[:space:]]+)?RACCOON_DNS_JAIL[[:space:]]*=[[:space:]]*"?1"?[[:space:]]*(#.*)?$' \
+        /workspace/.env 2>/dev/null; then
+    exit 0
+fi
+(
+    set -a
+    # shellcheck disable=SC1091
+    . /workspace/.env 2>/dev/null || true
+    set +a
+    bash /workspace/.devcontainer/dns-jail.sh
+) || true