Modernize Qt dependency path

contrib/smoke-test-qt.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+DATADIR="${DATADIR:-$(mktemp -d /tmp/agrarian-qt-smoke.XXXXXX)}"
+LOGFILE="${LOGFILE:-/tmp/agrarian-qt-smoke.log}"
+WAIT_SECONDS="${WAIT_SECONDS:-25}"
+AGRARIAN_QT="${AGRARIAN_QT:-$ROOT/src/qt/agrarian-qt}"
+
+require_path() {
+  if [[ ! -x "$1" ]]; then
+    echo "Missing executable: $1" >&2
+    exit 1
+  fi
+}
+
+require_path "$AGRARIAN_QT"
+mkdir -p "$DATADIR"
+rm -f "$LOGFILE"
+
+set +e
+timeout --kill-after=5s "${WAIT_SECONDS}s" xvfb-run -a "$AGRARIAN_QT" \
+  -regtest -datadir="$DATADIR" -choosedatadir=0 -debug=qt -debug=rpc \
+  -printtoconsole -server=0 -listen=0 -dnsseed=0 -connect=0 >"$LOGFILE" 2>&1
+exit_code=$?
+set -e
+
+if [[ "$exit_code" -ne 124 ]]; then
+  echo "Expected Qt wallet to keep running until timeout, got exit code $exit_code" >&2
+  tail -n 80 "$LOGFILE" >&2 || true
+  exit 1
+fi
+
+if ! grep -q "init message: Done loading" "$LOGFILE"; then
+  echo "Qt wallet did not reach Done loading" >&2
+  tail -n 120 "$LOGFILE" >&2 || true
+  exit 1
+fi
+
+if grep -E "No functional TLS|No such signal|Unknown property" "$LOGFILE" >/dev/null; then
+  echo "Qt wallet logged a Qt6 runtime compatibility warning" >&2
+  grep -E "No functional TLS|No such signal|Unknown property" "$LOGFILE" >&2 || true
+  exit 1
+fi
+
+echo "Agrarian Qt smoke test passed"
+echo "  datadir: $DATADIR"
+echo "  log: $LOGFILE"