Fix AdventureBot group preparation, public portals and flight recovery

Add preparation outings and equipment checks with a five-minute return to the meeting point. Correct static portal visitor casting and level conditions, with native interaction diagnostics. Recover suspended flying mounts, walk to verified takeoff sites, and validate landing and return volumes. Include SQL migrations, targeted regression tests and live validation checkpoints.

src/server/game/World/ClientlessTravelGraphMgr.cpp

@@ -589,7 +589,8 @@ bool ClientlessTravelGraphMgr::PlanAdaptiveRoute(
     bool const flightEnabled = sClientlessFlightMgr->Enabled(player);
     auto flightCost = [&](ClientlessTravelNode const& from, uint32 map, float x, float y, float z, bool access = false)
     {
-        if (!flightEnabled || from.MapId != map)
+        if (!flightEnabled || from.MapId != map ||
+            (blockedBridgeKeys && blockedBridgeKeys->count("flight_origin:"+from.Key)))
             return std::numeric_limits<float>::infinity();
         Position a,b; a.Relocate(from.X,from.Y,from.Z,from.O); b.Relocate(x,y,z);
         auto begin=std::chrono::steady_clock::now();++trace.FlightCalls;
@@ -721,6 +722,7 @@ bool ClientlessTravelGraphMgr::PlanAdaptiveRoute(
                 entryNav.FinalDistance <= 1.5f && entryNav.MaxSegmentLength <= 8.0f &&
                 entryNav.MaxZDelta <= 5.0f && entryNav.PathLength <= 500.0f;
             ClientlessTravelNode departure;
+            departure.Key="flight_departure";
             departure.MapId=player->GetMapId();departure.X=player->GetPositionX();departure.Y=player->GetPositionY();departure.Z=player->GetPositionZ();
             float air=blockedBridgeKeys && blockedBridgeKeys->count("flight:flight_departure->"+node.Key)?
                 std::numeric_limits<float>::infinity():flightCost(departure,node.MapId,node.X,node.Y,node.Z,!reachable);