Calculator Resterm — a quote line still reads back to the requirement behind it
A user enters a heating requirement rather than a product code, and the software runs the engineering calculation and picks the heater. What this page leans on is the chain read backwards: the selection drops into a basket, the basket attaches to a project, the project to its customer, and the calculation's output becomes the quote line directly. With nothing carried by hand between them, which requirement produced a line stays readable afterwards, so a disputed figure has its input under it. Laravel runs the core, MySQL holds the records, Vue carries the interface.
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