Positioning Truth Tracer Reconciles the reused positioning canvas against two truth surfaces — what the product can actually ship (the stage record) and what the claims ledger has substantiated — to produce the differentiation truth set : the set of differentiators the brand can defend today, each labeled Measured / User-provided / . It is the fourth Trace-phase move of the TALE loop and the upstream of the differentiation-integrity veto: the onlyness/difference statement must hold against named alternatives and rest only on claims that are in the ledger or explicitly flagged — never asserted…