Fix auto-populate: wait for model + (machine OR CSF name)

Printer name only generates when there's enough info:
- Model must be selected (vendor available)
- AND either CSF name entered OR machine selected

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

addprinter.asp

@@ -333,6 +333,11 @@
           var machineAlias = machineOption.data('alias') || '';
           var machineNumber = machineOption.data('number') || '';
 
+          // Only generate if we have model AND (machine OR CSF name)
+          if (!vendor || (!csfName && !machineAlias && !machineNumber)) {
+              return; // Not enough info yet
+          }
+
           // Use alias if available, otherwise machine number
           var location = machineAlias || machineNumber;
           location = location.replace(/\s+/g, '').replace('Machine', '');