Narrow Escape

This is a Closed Sicilian in which I get a pretty good position out of the opening and proceed to nearly self-desctruct, inch by inch.  There are quite a few comments but not a lot of analysis until we get to the Bishop vs Knight endgame, which was very instructive to me in the post-mortem.   Turns out that both players missed White's winning idea, allowing me to salvage a draw.