20260316g: Fix conf anomaly detection + auto-split opened packages

- Fixed isSuspiciousDefaultQty: for conf products, checks package_unit thresholds
  (375g is fine for g-max=10000, not checked against conf-max=50)
- Auto-split on use: when using from a conf product with whole+fractional qty,
  automatically separates whole confs from opened part
  e.g. Panna 2.6conf → use 5g → 2conf (sealed) + 0.56conf (opened)
- Move modal now moves only the opened row (via opened_id)
- Use query prefers fractional rows (opened packages) first
- Non-conf products still get standard move-after-use behavior

api/index.php

@@ -624,7 +624,7 @@ function useFromInventory(PDO $db): void {
         return;
     }
     
-    $stmt = $db->prepare("SELECT id, quantity FROM inventory WHERE product_id = ? AND location = ? AND quantity > 0");
+    $stmt = $db->prepare("SELECT id, quantity FROM inventory WHERE product_id = ? AND location = ? AND quantity > 0 ORDER BY (quantity != CAST(CAST(quantity AS INTEGER) AS REAL)) DESC, quantity ASC");
     $stmt->execute([$productId, $location]);
     $existing = $stmt->fetch();
     
@@ -638,6 +638,46 @@ function useFromInventory(PDO $db): void {
         $quantity = $existing['quantity'];
     }
     
+    // Auto-split conf products: separate whole confs from opened (fractional) part
+    $openedId = null;
+    $stmt2 = $db->prepare("SELECT unit, default_quantity, package_unit FROM products WHERE id = ?");
+    $stmt2->execute([$productId]);
+    $prodInfo = $stmt2->fetch();
+    
+    if ($prodInfo && $prodInfo['unit'] === 'conf' && $prodInfo['default_quantity'] > 0 && !$useAll) {
+        $totalQty = (float)$existing['quantity'];
+        $wholeConfs = floor($totalQty + 0.001);
+        $fraction = round($totalQty - $wholeConfs, 6);
+        
+        // Has both whole and fractional, and we're using less than or equal to the fractional part
+        if ($wholeConfs >= 1 && $fraction > 0.001 && $quantity <= $fraction + 0.001) {
+            // Split: keep whole confs in original row, create new row for opened part
+            $stmt3 = $db->prepare("UPDATE inventory SET quantity = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
+            $stmt3->execute([$wholeConfs, $existing['id']]);
+            
+            // Get expiry and vacuum_sealed from original row
+            $stmt3 = $db->prepare("SELECT expiry_date, vacuum_sealed FROM inventory WHERE id = ?");
+            $stmt3->execute([$existing['id']]);
+            $origRow = $stmt3->fetch();
+            
+            $newFraction = round($fraction - $quantity, 6);
+            if ($newFraction > 0.001) {
+                $stmt3 = $db->prepare("INSERT INTO inventory (product_id, location, quantity, expiry_date, vacuum_sealed) VALUES (?, ?, ?, ?, ?)");
+                $stmt3->execute([$productId, $location, $newFraction, $origRow['expiry_date'], $origRow['vacuum_sealed'] ?? 0]);
+                $openedId = (int)$db->lastInsertId();
+            }
+            
+            // Log transaction
+            $type = ($notes === 'Buttato') ? 'waste' : 'out';
+            $stmt3 = $db->prepare("INSERT INTO transactions (product_id, type, quantity, location, notes) VALUES (?, ?, ?, ?, ?)");
+            $stmt3->execute([$productId, $type, $quantity, $location, $notes]);
+            
+            $remaining = $newFraction > 0.001 ? $newFraction : 0;
+            // Skip the normal flow — jump to Bring! check and response
+            goto afterDeduct;
+        }
+    }
+    
     $newQty = max(0, $existing['quantity'] - $quantity);
     
     if ($newQty <= 0) {
@@ -653,9 +693,22 @@ function useFromInventory(PDO $db): void {
     $stmt = $db->prepare("INSERT INTO transactions (product_id, type, quantity, location, notes) VALUES (?, ?, ?, ?, ?)");
     $stmt->execute([$productId, $type, $quantity, $location, $notes]);
     
+    $remaining = $newQty;
+    
+    // Check if opened part remains (for non-split path)
+    if ($remaining > 0 && $prodInfo && $prodInfo['unit'] === 'conf') {
+        $w = floor($remaining + 0.001);
+        $f = round($remaining - $w, 6);
+        if ($f > 0.001) {
+            $openedId = (int)$existing['id'];
+        }
+    }
+    
+    afterDeduct:
+    
     // Auto-add to Bring! if product is completely finished (no inventory left anywhere)
     $addedToBring = false;
-    if ($newQty <= 0) {
+    if ($remaining <= 0) {
         $stmt = $db->prepare("SELECT SUM(quantity) as total FROM inventory WHERE product_id = ? AND quantity > 0");
         $stmt->execute([$productId]);
         $totalLeft = (float)($stmt->fetchColumn() ?: 0);
@@ -711,7 +764,9 @@ function useFromInventory(PDO $db): void {
         }
     }
     
-    echo json_encode(['success' => true, 'remaining' => $newQty, 'added_to_bring' => $addedToBring]);
+    $response = ['success' => true, 'remaining' => $remaining, 'added_to_bring' => $addedToBring];
+    if ($openedId) $response['opened_id'] = $openedId;
+    echo json_encode($response);
 }
 
 function updateInventory(PDO $db): void {

assets/js/app.js

@@ -958,10 +958,12 @@ function isSuspiciousQty(qty, unit) {
     return n < t.min || n > t.max;
 }
 
-function isSuspiciousDefaultQty(defaultQty, unit) {
+function isSuspiciousDefaultQty(defaultQty, unit, packageUnit) {
     const n = parseFloat(defaultQty);
     if (!n || n <= 0) return false;
-    const t = QTY_THRESHOLDS[unit] || QTY_THRESHOLDS['pz'];
+    // For conf products, default_quantity is in package_unit (g, ml, etc.)
+    const checkUnit = (unit === 'conf' && packageUnit) ? packageUnit : unit;
+    const t = QTY_THRESHOLDS[checkUnit] || QTY_THRESHOLDS['pz'];
     return n > t.max;
 }
 
@@ -988,7 +990,7 @@ async function loadReviewItems() {
         
         const suspicious = items.filter(item => {
             if (confirmed[item.id]) return false;
-            return isSuspiciousQty(item.quantity, item.unit) || isSuspiciousDefaultQty(item.default_quantity, item.unit);
+            return isSuspiciousQty(item.quantity, item.unit) || isSuspiciousDefaultQty(item.default_quantity, item.unit, item.package_unit);
         });
         
         if (suspicious.length === 0) {
@@ -1003,7 +1005,7 @@ async function loadReviewItems() {
             const locInfo = LOCATIONS[item.location] || { icon: '📦', label: item.location };
             const t = QTY_THRESHOLDS[item.unit] || QTY_THRESHOLDS['pz'];
             const suspQty = isSuspiciousQty(item.quantity, item.unit);
-            const suspDq = isSuspiciousDefaultQty(item.default_quantity, item.unit);
+            const suspDq = isSuspiciousDefaultQty(item.default_quantity, item.unit, item.package_unit);
             let warning;
             if (suspDq && !suspQty) warning = '📦 Conf. sospetta';
             else if (parseFloat(item.quantity) < t.min) warning = '⬇️ Troppo poco';
@@ -3480,10 +3482,10 @@ function selectUseLocation(btn, loc) {
     document.getElementById('use-location').value = loc;
 }
 
-function showMoveAfterUseModal(product, fromLoc, remaining) {
+function showMoveAfterUseModal(product, fromLoc, remaining, openedId) {
     const otherLocs = Object.entries(LOCATIONS).filter(([k]) => k !== fromLoc);
     const locButtons = otherLocs.map(([k, v]) =>
-        `<button type="button" class="loc-btn" onclick="confirmMoveAfterUse(${product.id}, '${fromLoc}', '${k}')">${v.icon} ${v.label}</button>`
+        `<button type="button" class="loc-btn" onclick="confirmMoveAfterUse(${product.id}, '${fromLoc}', '${k}', ${openedId || 0})">${v.icon} ${v.label}</button>`
     ).join('');
     
     document.getElementById('modal-content').innerHTML = `
@@ -3492,7 +3494,7 @@ function showMoveAfterUseModal(product, fromLoc, remaining) {
             <button class="modal-close" onclick="closeModal();showPage('dashboard')">✕</button>
         </div>
         <div style="padding:0 16px 16px">
-            <p style="margin-bottom:12px">Vuoi spostare il resto di <strong>${escapeHtml(product.name)}</strong> in un'altra posizione?</p>
+            <p style="margin-bottom:12px">Vuoi spostare ${openedId ? 'la confezione aperta' : 'il resto'} di <strong>${escapeHtml(product.name)}</strong> in un'altra posizione?</p>
             <div class="location-selector">${locButtons}</div>
             <button type="button" class="btn btn-secondary full-width" style="margin-top:12px" onclick="closeModal();showPage('dashboard')">No, resta in ${LOCATIONS[fromLoc]?.label || fromLoc}</button>
         </div>
@@ -3500,23 +3502,37 @@ function showMoveAfterUseModal(product, fromLoc, remaining) {
     document.getElementById('modal-overlay').style.display = 'flex';
 }
 
-async function confirmMoveAfterUse(productId, fromLoc, toLoc) {
+async function confirmMoveAfterUse(productId, fromLoc, toLoc, openedId) {
     closeModal();
     showLoading(true);
     try {
-        const data = await api('inventory_list');
-        const item = (data.inventory || []).find(i => i.product_id == productId && i.location === fromLoc && parseFloat(i.quantity) > 0);
-        if (item) {
-            const product = { name: item.name || '', category: item.category || '' };
+        if (openedId) {
+            // Move only the specific opened row
+            const product = { name: currentProduct?.name || '', category: currentProduct?.category || '' };
             let days = estimateExpiryDays(product, toLoc);
-            if (item.vacuum_sealed) days = getVacuumExpiryDays(days);
             await api('inventory_update', {}, 'POST', {
-                id: item.id,
+                id: openedId,
                 location: toLoc,
                 expiry_date: addDays(days),
                 product_id: productId,
             });
-            showToast(`📦 Spostato in ${LOCATIONS[toLoc]?.label || toLoc}`, 'success');
+            showToast(`📦 Confezione aperta spostata in ${LOCATIONS[toLoc]?.label || toLoc}`, 'success');
+        } else {
+            // Legacy: move whatever is at fromLoc
+            const data = await api('inventory_list');
+            const item = (data.inventory || []).find(i => i.product_id == productId && i.location === fromLoc && parseFloat(i.quantity) > 0);
+            if (item) {
+                const product = { name: item.name || '', category: item.category || '' };
+                let days = estimateExpiryDays(product, toLoc);
+                if (item.vacuum_sealed) days = getVacuumExpiryDays(days);
+                await api('inventory_update', {}, 'POST', {
+                    id: item.id,
+                    location: toLoc,
+                    expiry_date: addDays(days),
+                    product_id: productId,
+                });
+                showToast(`📦 Spostato in ${LOCATIONS[toLoc]?.label || toLoc}`, 'success');
+            }
         }
     } catch (e) {
         console.error('Move error:', e);
@@ -3580,7 +3596,7 @@ async function submitUse(e) {
             // If there's remaining quantity, offer to move to another location
             const usedFrom = document.getElementById('use-location').value;
             if (result.remaining > 0) {
-                showMoveAfterUseModal(currentProduct, usedFrom, result.remaining);
+                showMoveAfterUseModal(currentProduct, usedFrom, result.remaining, result.opened_id);
             } else {
                 showPage('dashboard');
             }

index.html

@@ -911,6 +911,6 @@
     </div>
 </div>
 
-<script src="assets/js/app.js?v=20260316f"></script>
+<script src="assets/js/app.js?v=20260316g"></script>
 </body>
 </html>