Status: OUT
Temporal irreversibility functions as a unifying architectural primitive in this codebase, yielding at least two properties from a single constraint: simplicity (eliminating reversal removes an entire complexity class including undo, compensation, and rollback) and ordering (forward-only processing and monotonic progression are manifestations of the same directional constraint). Because irreversibility simultaneously addresses correctness and simplicity rather than trading one for the other, forward-only design represents one of the codebase's most economical architectural commitments.
Irreversibility, monotonicity, and simplicity are three projections of one constraint — not three separate design choices
Depends on (SL): irreversibility-is-the-simplicity-mechanism, forward-only-and-monotonicity-are-a-single-constraint