Stabilize auth flow and profile images

scripts/host-adb.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT_DIR="$(cd "$(dirname "$0")/.." && pwd)"
+LOCAL_ADB_BIN="$ROOT_DIR/.tools/android-platform-tools/adb"
+ADB_BIN="${TDC114_HOST_ADB_BIN:-}"
+
+if [ -z "$ADB_BIN" ]; then
+  if [ -x "$LOCAL_ADB_BIN" ]; then
+    ADB_BIN="$LOCAL_ADB_BIN"
+  elif command -v adb >/dev/null 2>&1; then
+    ADB_BIN="$(command -v adb)"
+  fi
+fi
+
+if [ -z "$ADB_BIN" ] || [ ! -x "$ADB_BIN" ]; then
+  cat >&2 <<EOF
+Host adb is not available.
+
+Expected one of:
+  - $LOCAL_ADB_BIN
+  - adb in PATH
+  - TDC114_HOST_ADB_BIN=/path/to/adb
+
+Run scripts/install-host-adb-from-docker.sh once to extract adb from the Flutter Docker image.
+EOF
+  exit 127
+fi
+
+exec "$ADB_BIN" "$@"