Recently news broke in Grist of an agreement brokered by the Bush administration and several Northwest tribes affecting endangered salmon, litigation, and dam operations on the Columbia and Snake Rivers. Now that the dust has settled, here is one view of this deal's details and implications.   First, it is worth highlighting that this deal came during the same week that a government council decided on unprecedented closures for salmon fishing on the West Coast in response to another precipitous drop in salmon stocks, this time on the Sacramento River. Salmon populations and coastal communities have suffered under the current …