Full run implementations following existing botty patterns:
- andariel.py: Act 1 Catacombs L2→L3→L4, waypoint-based approach
- countess.py: Act 1 Forgotten Tower L1→L5 via Black Marsh WP
- mephisto.py: Act 3 Durance of Hate L2→L3 via A3 WP
- baal.py: Act 5 Throne of Destruction, wave clearing + boss
Added 12 Location constants to pather.py and 12 placeholder
path nodes to game.ini (record in-game with node_recorder.py).
Path node coordinates are 0,0 placeholders — must be recorded
in-game before runs can actually execute.