fix: prime adb before native Android emulator boots

Author: niakw

scripts/prime_android_lab_adb.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Hosted Android readers occasionally enter the emulator action with no adb
+# daemon listening on 5037. Prime the production SDK bridge before an AVD is
+# launched. This is Lab-only orchestration: it never changes Nuvio runtime code,
+# app manifests, provider JS or player/network behavior.
+if ! command -v adb >/dev/null 2>&1; then
+  echo "FIELD_NATIVE_ADB_PRIME status=missing_adb runtime_mutation=false" >&2
+  exit 1
+fi
+
+adb kill-server >/dev/null 2>&1 || true
+adb start-server >/dev/null
+
+ready=0
+for _attempt in 1 2 3 4 5; do
+  if adb devices >/tmp/niakvio-adb-devices.txt 2>/tmp/niakvio-adb-error.txt; then
+    ready=1
+    break
+  fi
+  sleep 1
+done
+
+if [ "$ready" -ne 1 ]; then
+  cat /tmp/niakvio-adb-error.txt >&2 || true
+  echo "FIELD_NATIVE_ADB_PRIME status=unavailable runtime_mutation=false" >&2
+  exit 1
+fi
+
+echo "FIELD_NATIVE_ADB_PRIME status=ready port=5037 runtime_mutation=false"