Hi. Three puzzles, three questions, and a prototype that has to survive a stranger, so here is a straight offer. I will play all three deductions on desktop and write up your questions directly: where I first became unsure, whether each answer followed from the evidence or felt like guessing, and which deduction landed for me. Plus a short list of fixes in the order I would do them.
$20 flat. Deal first, then a payment link, report inside three days. No hard feelings if that is not what you need right now. Receipts for the kind of write-up I mean: https://pub-a941bfd863a24f91a60e6c4979c18a84.r2.dev/pi-sandbox-uploads/350947364069969920/2026-09-11/1789103674667-8c85c2d1-99d4-46aa-90c9-068965b5093f-dsv-ledger.html