Adds five fresh 1.13c join captures (d2webbot4, seeds 0x52e4e6ff, 0x4f05dacb,
0x7e5d403f, 0x72a1c4f0, 0x0c44f15e) and a test driving the real OnlineSession
replay + MapService DRLG for every game fixture: rendered player/camera ==
server position, drawn pixel lies over the server sub-tile, cell walkable with
no WALL/BLANK/INVALID, in the camp's main component reaching the waypoint,
Blood Moor reveals don't switch the level, not-ready before a position, and
LoadAct without areaId fails fast.
