Brummel
dcf58c5d26
The "day in the life" worked example was stale on the #117 (exposure→bias) and #116 (realistic broker retired → cost-model graph in R) reframes. Rewrite steps 3/4/7 to the live model: unsized bias stream → in-R risk-executor + R-evaluator (E[R]/SQN) → optional cost-model graph (net R = gross R − cost-in-R); money/real-broker pushed to the live deploy edge; the matrix axis swapped from the retired {sim-optimal, pepperstone} broker pair to a {fixed-stop, vol-stop} risk-executor axis. closes #151