<p>An issue stays closed because it closed with proof, not because someone said it was done. In BidLight, an issue is pinned to the element it concerns and closes only with three things attached: a screenshot, a tagged user and the model commit that fixed it.</p> <p>That record is the answer. If a duct gets moved back, or a clash shows up again, you have the version, the person&#39;s name and the visual of the fix.</p> <p>How it works on a real job:</p> <ol><li>Issue is pinned to the specific element, not a folder or a chat thread.</li><li>Whoever owns it tags themselves. No anonymous handoffs.</li><li>They attach a screenshot of the corrected condition.</li><li>They attach the model commit that carries the fix.</li><li>The issue closes. The proof stays with the element.</li></ol> <p>Every export is versioned and compared element by element, so if something moves later, you see exactly what changed and when it changed. The same record that keeps your 6am digest honest is the record you hand over when someone asks who fixed what.</p> <p>A clash caught in the model costs about $50. The same one found in the field runs $5,000 to $50,000. Proof at the element level is how you stay on the right side of that number.</p>