Decision-OS V13 Research Note v0.1: Compound Loop — Selecting the Variable That Makes the Next Iteration 1.01

This research note introduces Decision-OS V13: Compound Loop. V13 distinguishes Task Loop, Evolution Loop, and Compound Loop. While task loops repeat actions toward completion, Compound Loop focuses on selecting the variable that makes the next iteration 1.01 rather than merely repeating the previous loop. The note defines Compound Loop as an Aspire-bounded, Carrier-preserving, positive-EV update process. Its purpose is to raise the expected value of future iterations without increasing ruin risk, damaging Aspire, or destroying the Carrier that must continue the trajectory. V13 is positioned after V10 and V12: V10 recalculates survivable goal-length, V12 prevents false completion and preserves restartability, and V13 governs which variable may be updated so that repeated operation compounds safely. Core claim: A loop is valuable not because it repeats action, but because it raises the expected value of the next iteration without breaking Aspire.