Fix: Resolve 'Column date cannot be null' error in FG scan

- Added default date/time handling in save_fg_scan() function
- Backend now uses current date/time if values not provided
- Added hidden date/time form fields in frontend
- Updated JavaScript to populate hidden fields before submission
- Prevents null database errors when scanning orders

app/templates/modules/quality/fg_scan.html

@@ -35,6 +35,10 @@
 
             <label for="date_time">Date/Time:</label>
             <input type="text" id="date_time" name="date_time" readonly>
+            
+            <!-- Hidden fields for actual date/time submission -->
+            <input type="hidden" id="date" name="date">
+            <input type="hidden" id="time" name="time">
 
             <div class="form-buttons">
                 <button type="submit" class="btn-submit">Submit Scan</button>
@@ -671,11 +675,22 @@ defectCodeInput.addEventListener('input', function() {
         const seconds = String(now.getSeconds()).padStart(2, '0');
         const timeValue = `${hours}:${minutes}:${seconds}`;
         
+        // Format date as YYYY-MM-DD for database
+        const year = now.getFullYear();
+        const month = String(now.getMonth() + 1).padStart(2, '0');
+        const day = String(now.getDate()).padStart(2, '0');
+        const dateValue = `${year}-${month}-${day}`;
+        
         // Parse the current datetime display and update just the time part
         const dateStr = timeInput.value.split(' ').slice(0, -1).join(' '); // Get date part
         timeInput.value = dateStr + ' ' + timeValue;
         
+        // Populate hidden date/time fields for form submission
+        document.getElementById('date').value = dateValue;
+        document.getElementById('time').value = timeValue;
+        
         console.log('✅ Time field updated to:', timeValue);
+        console.log('✅ Date field set to:', dateValue);
         
         // Save current scan data to localStorage for clearing after reload
         localStorage.setItem('fg_scan_clear_after_submit', 'true');