Import upstream v0.16.22, stripped

Upstream commit: 474dd0229cb20cf513036619781ed97bd8073c3f
Enterprise-only files removed or emptied: 63
Enterprise-only snippets removed: 117 in 50 files
Dangling module declarations removed: 5
Cargo edits turning enterprise off: 14
Verification: clean
Enterprise feature gates left for rebuilt features: 19 in 18 files

Produced by tools/fork/strip.py. The full report is in docs/fork/strip-reports/ on main.

tests/docker/powerdns/entrypoint.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+# Wait for PowerDNS to be ready (started by default entrypoint)
+echo "Waiting for PowerDNS to start..."
+for i in $(seq 1 30); do
+  if pdnsutil list-all-zones 2>/dev/null; then
+    break
+  fi
+  sleep 1
+done
+
+# Run zone initialization
+bash /etc/powerdns/init-zone.sh