For over a century, the Minoan script known as Linear A (c. 1800–1450 BCE) has remained one ofarchaeology’s greatest uncracked codes. Traditional decipherment attempts have largely focused onphonetic matching to single language families in isolation, yielding fragmented results. This paperproposes a fundamental shift in methodology: from Linguistic Reconstruction to ForensicAccounting, viewing Linear A not as a monolithic language, but as a Trade Creole—asophisticated administrative hybrid. Utilizing the LUMENARY Cognitive Execution System (CES™) and the proprietary PHOENIXSCANNER™ visual reconstruction engine, we analyzed the Haghia Triada (HT) corpus as a closedloopmathematical system. Our analysis reveals a civilization at the crossroads of the ancient world,synthesizing Mesopotamian accounting formats, Egyptian visual logograms, WestSemitic commercial vocabulary, and Luwian (Anatolian) grammatical structure into a unifiedoperating system. Our findings demonstrate: A Geometric Fraction Key (The "Brazil Hypothesis") that resolves sub-unit values based onvisual shape logic (1/2, 1/4, 1/8). A verified Accounting Syntax that successfully balances the KU-RO (Total) and KIRO(Deficit) ledgers on complex tablets. A coherent Phonetic & Grammatical Syllabary that, when applied to ritual vessels, yieldsintelligible sentences in a Luwian-Semitic hybrid dialect. This paper presents a functional decipherment of the administrative dialect of Linear A, achievedthrough a novel Human-AI symbiotic workflow.