TAHOE/TRUCKEE — You’re suffocating in the dark and you can’t move. The snow that had seemed so fluffy moments before as you carved wide S-turns down the slope is cemented in your nose, your eyes and your mouth. Your life depends on a small avalanche transceiver — if you decided to bring it — and your companions — if you decided to ski with friends. If you ask Randall Osterhuber, by this point, the key mistakes have already been made, and much of what he would recommend when it comes to avalanche safety is moot. For Osterhuber, director and treasurer …