ci: bump softprops/action-gh-release from 2 to 3

Bumps [softprops/action-gh-release](https://github.com/softprops/action-gh-release) from 2 to 3.
- [Release notes](https://github.com/softprops/action-gh-release/releases)
- [Changelog](https://github.com/softprops/action-gh-release/blob/master/CHANGELOG.md)
- [Commits](https://github.com/softprops/action-gh-release/compare/v2...v3)

---
updated-dependencies:
- dependency-name: softprops/action-gh-release
  dependency-version: '3'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -206,7 +206,7 @@ jobs:
 
       - name: Create release
         if: steps.tag_check.outputs.exists == 'false'
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           tag_name: ${{ steps.version.outputs.version }}
           name: "EverShelf ${{ steps.version.outputs.version }}"

CHANGELOG.md

@@ -11,6 +11,36 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - **Recipe scraps tips** — During cooking steps, detect "waste" generated (peels, cores, bones, eggshells, coffee grounds, citrus zest, etc.) and surface AI-powered tips on how to reuse them (compost, natural cleaner, broth, candied peel, etc.). Could be shown as an optional collapsible hint card below the step that generates the scrap.
 
+## [1.7.35] - 2026-06-02
+
+### Fixed
+- **Barcode scanner accepts invalid codes** — Manual barcode input with an incorrect EAN checksum now blocks the lookup and shows an error (previously showed a warning but proceeded anyway). The native `BarcodeDetector` path now also validates EAN-8/EAN-13/UPC checksum before confirming a scan, consistent with the Quagga fallback which already did this check.
+- **Recipe persons +/− buttons stopped working in the generation dialog** — A duplicate `adjustRecipePersons` function added for the post-generation rescaler was overriding the one that updated the persons input in the recipe setup dialog. The rescaler is now named `scaleRecipePersons` to avoid the conflict.
+
+## [1.7.34] - 2026-05-30
+
+### Added
+- **AI visual barcode fallback** — When the barcode scanner fails to read a barcode within 5 seconds, EverShelf can now automatically capture a camera frame and send it to Gemini Vision to visually identify the product (name, brand, category). On success the product is saved and the inventory form opens just as if a barcode had been scanned. A new toggle in **Settings → Camera** (`AI visual identification (5s fallback)`) lets users enable or disable this feature at any time. Requires Gemini API key configured. Disabled by default.
+
+## [1.7.33] - 2026-05-29
+
+### Fixed
+- **HA sensor `shopping_total` always null** — `haInventorySensor` was reading `shopping_total_cache.json` with a 1-hour TTL (cache populated only by the JS frontend, so it was often empty). Extended TTL to 24 hours and added an inline fallback: when the cache is absent or stale, the sensor now computes the total directly from `shopping_price_cache.json` without any AI calls. Queries `shopping_list` joined to `products` for the canonical `shopping_name`, then looks up both v3 and legacy v0 cache key formats to maximise hit rate. Works in both internal and Bring shopping modes.
+- **HA `ha_refresh_prices` using non-existent columns** — `haInventorySensor` and `haRefreshPrices` were querying `quantity`, `unit`, `checked` from `shopping_list` — columns that do not exist in that table (schema: `id, name, raw_name, specification, added_at, sort_order`). Changed to `SELECT name` with `shopping_name` join and default `qty=1 / unit=pz`.
+
+
+## [1.7.32] - 2026-05-29
+
+### Changed
+- **Smarter expiry u2192 shopping list logic** — The "expiring soon" threshold is now 7 days (was 3), giving enough time to plan the next shopping trip. Items expiring soon are only flagged for restocking when the user is a **regular buyer** (`isRegular`) and either stock is low (<50%) or the consumption rate predicts the item will expire before being used. Non-regular products keep the old 3-day safety-net. Expired items are now only added to the shopping list when `isRegular || buyCount >= 2` — products that expired unused without ever being a staple no longer pollute the list; the expiry banner handles them.
+
+
+## [1.7.31] - 2026-05-29
+
+### Fixed
+- **New pack merges into opened pack on add** — `addToInventory` was looking for ANY existing row for the same product+location and adding the new quantity to it. This caused a newly purchased sealed pack to be silently merged with an already-opened pack, collapsing two physically distinct containers into one row and corrupting the `opened_at` timestamp. The fix now searches only for a **sealed** (unopened) row (`opened_at IS NULL`) to merge into. If only opened rows exist, a new sealed row is created instead — keeping the two packs separate and allowing the anomaly model and shelf-life tracker to work correctly.
+
+
 ## [1.7.30] - 2026-05-29
 
 ### Fixed

README.md

@@ -25,7 +25,7 @@
 [![SQLite](https://img.shields.io/badge/SQLite-3-blue.svg)](https://www.sqlite.org/)
 [![Docker](https://img.shields.io/badge/Docker-Ready-2496ED.svg)](Dockerfile)
 [![i18n](https://img.shields.io/badge/i18n-IT%20%7C%20EN%20%7C%20DE%20%7C%20FR%20%7C%20ES-orange.svg)](translations/)
-[![Version](https://img.shields.io/badge/version-1.7.25-brightgreen.svg)](CHANGELOG.md)
+[![Version](https://img.shields.io/badge/version-1.7.33-brightgreen.svg)](CHANGELOG.md)
 [![GitHub stars](https://img.shields.io/github/stars/dadaloop82/EverShelf?style=social)](https://github.com/dadaloop82/EverShelf/stargazers)
 [![Last commit](https://img.shields.io/github/last-commit/dadaloop82/EverShelf/main)](https://github.com/dadaloop82/EverShelf/commits/main)
 [![Contributors](https://img.shields.io/github/contributors/dadaloop82/EverShelf)](https://github.com/dadaloop82/EverShelf/graphs/contributors)

api/index.php

@@ -604,7 +604,7 @@ function checkRateLimit(string $action): void {
     }
 
     // Determine limit based on action
-    $aiActions = ['gemini_readExpiry', 'gemini_chat', 'gemini_identify', 'gemini_suggest_shopping', 'chat_to_recipe', 'recipe_from_ingredient', 'gemini_number_ocr'];
+    $aiActions = ['gemini_readExpiry', 'gemini_chat', 'gemini_identify', 'gemini_suggest_shopping', 'chat_to_recipe', 'recipe_from_ingredient', 'gemini_number_ocr', 'gemini_barcode_visual'];
     $loginActions = [];
     $recipeActions = ['generate_recipe', 'generate_recipe_stream'];
     $errorActions = ['report_error', 'check_update'];
@@ -1109,6 +1109,10 @@ try {
             geminiNumberOCR();
             break;
 
+        case 'gemini_barcode_visual':
+            geminiBarcodeVisual();
+            break;
+
         case 'get_shopping_price':
             getShoppingPrice($db);
             break;
@@ -1570,7 +1574,9 @@ function haInventorySensor(PDO $db): void {
             $daysToNextExpiry = (int)$diff->format('%r%a');
         }
 
-        // Shopping total from server-side total cache (max 1 hour old)
+        // Shopping total from server-side total cache (max 24 hours old).
+        // The cache is populated by the JS frontend or by the ha_refresh_prices action.
+        // 24h TTL is sufficient: the total changes slowly and HA polls frequently.
         $priceEnabled  = env('PRICE_ENABLED', 'false') === 'true';
         $priceCurrency = env('PRICE_CURRENCY', 'EUR');
         $shoppingTotal = null;
@@ -1578,19 +1584,58 @@ function haInventorySensor(PDO $db): void {
             $totalCachePath = __DIR__ . '/../data/shopping_total_cache.json';
             if (file_exists($totalCachePath)) {
                 $tc = json_decode(file_get_contents($totalCachePath), true) ?? [];
-                // Find the most recent entry not older than 1 hour
-                $best = null;
-                $bestTs = 0;
+                $best = null; $bestTs = 0;
                 foreach ($tc as $entry) {
                     if (isset($entry['ts']) && $entry['ts'] > $bestTs) {
                         $bestTs = $entry['ts'];
                         $best   = $entry;
                     }
                 }
-                if ($best && (time() - $bestTs) < 3600) {
+                if ($best && (time() - $bestTs) < 86400) {
                     $shoppingTotal = round((float)($best['result']['total'] ?? 0), 2);
                 }
             }
+            // If cache is absent or older than 24h, compute inline from the existing
+            // per-item price cache (no AI calls — fast, uses already-stored prices).
+            if ($shoppingTotal === null) {
+                $country  = env('PRICE_COUNTRY', 'Italia');
+                $priceCache = _loadPriceCache();
+                if (!empty($priceCache)) {
+                    $shopRows = $db->query("
+                        SELECT sl.name, COALESCE(p.shopping_name, sl.name) AS sname
+                        FROM shopping_list sl
+                        LEFT JOIN products p ON lower(p.name) = lower(sl.name)
+                    ")->fetchAll(PDO::FETCH_ASSOC);
+                    $inlineTotal = 0.0;
+                    $inlinePriced = 0;
+                    $seenNames = [];
+                    foreach ($shopRows as $r) {
+                        $sname = $r['sname'] ?? $r['name'];
+                        if (isset($seenNames[$sname])) continue; // deduplicate
+                        $seenNames[$sname] = true;
+                        $pk  = _priceKey($sname, $country);
+                        $pk0 = md5(mb_strtolower(trim($sname)) . '|' . mb_strtolower(trim($country)));
+                        $e   = $priceCache[$pk] ?? $priceCache[$pk0] ?? null;
+                        if ($e !== null) {
+                            $est = _calcEstimatedTotal(
+                                $e['price_per_unit'], $e['unit_label'] ?? '',
+                                1, 'pz', 0, ''
+                            );
+                            $inlineTotal += $est ?? 0;
+                            $inlinePriced++;
+                        }
+                    }
+                    if ($inlinePriced > 0) {
+                        $shoppingTotal = round($inlineTotal, 2);
+                        // Persist so next call is instant
+                        $tc2   = file_exists($totalCachePath) ? (json_decode(file_get_contents($totalCachePath), true) ?? []) : [];
+                        $ckey2 = 'ha_inline_' . date('Ymd_His');
+                        $tc2[$ckey2] = ['ts' => time(), 'result' => ['total' => $shoppingTotal, 'priced_items' => $inlinePriced]];
+                        if (count($tc2) >= 10) $tc2 = array_slice($tc2, -9, null, true);
+                        file_put_contents($totalCachePath, json_encode($tc2, JSON_UNESCAPED_UNICODE));
+                    }
+                }
+            }
         }
 
         $stateValue = match($sensor) {
@@ -1786,9 +1831,17 @@ function haRefreshPrices(PDO $db): void {
                 }
             }
         } else {
-            $rows = $db->query("SELECT name, quantity, unit FROM shopping_list WHERE checked = 0")->fetchAll(PDO::FETCH_ASSOC);
+            $rows = $db->query("
+                SELECT sl.name, COALESCE(p.shopping_name, sl.name) AS sname
+                FROM shopping_list sl
+                LEFT JOIN products p ON lower(p.name) = lower(sl.name)
+            ")->fetchAll(PDO::FETCH_ASSOC);
+            $seenSnamesHa = [];
             foreach ($rows as $r) {
-                $shoppingItems[] = ['name' => $r['name'], 'quantity' => (float)($r['quantity'] ?? 1), 'unit' => $r['unit'] ?? 'pz', 'default_quantity' => 0, 'package_unit' => ''];
+                $sname = $r['sname'] ?? $r['name'];
+                if (isset($seenSnamesHa[$sname])) continue;
+                $seenSnamesHa[$sname] = true;
+                $shoppingItems[] = ['name' => $sname, 'quantity' => 1, 'unit' => 'pz', 'default_quantity' => 0, 'package_unit' => ''];
             }
         }
 
@@ -1798,9 +1851,10 @@ function haRefreshPrices(PDO $db): void {
         $missing = [];
 
         foreach ($shoppingItems as $item) {
-            $key = _priceKey($item['name'], $country);
-            if (isset($priceCache[$key])) {
-                $entry = $priceCache[$key];
+            $key  = _priceKey($item['name'], $country);
+            $key0 = md5(mb_strtolower(trim($item['name'])) . '|' . mb_strtolower(trim($country)));
+            $entry = $priceCache[$key] ?? $priceCache[$key0] ?? null;
+            if ($entry !== null) {
                 $est = _calcEstimatedTotal($entry['price_per_unit'], $entry['unit_label'] ?? '', $item['quantity'], $item['unit'], $item['default_quantity'], $item['package_unit']);
                 $total += $est ?? 0;
                 $priced++;
@@ -2634,19 +2688,26 @@ function addToInventory(PDO $db): void {
     
     $vacuumSealed = (int)($input['vacuum_sealed'] ?? 0);
     
-    // Check if product already exists in this location
-    $stmt = $db->prepare("SELECT id, quantity FROM inventory WHERE product_id = ? AND location = ?");
+    // Check if a SEALED (not yet opened) row exists for this product+location.
+    // We merge new stock into a sealed row only — never into an already-opened
+    // pack, because that would conflate two physically distinct containers and
+    // corrupt the opened_at timestamp tracking.
+    $stmt = $db->prepare("
+        SELECT id, quantity FROM inventory
+        WHERE product_id = ? AND location = ? AND opened_at IS NULL
+        ORDER BY added_at ASC LIMIT 1
+    ");
     $stmt->execute([$productId, $location]);
     $existing = $stmt->fetch();
 
     if ($existing) {
-        // Update quantity
+        // Merge into the existing sealed row
         $newQty = $existing['quantity'] + $quantity;
         $stmt = $db->prepare("UPDATE inventory SET quantity = ?, expiry_date = COALESCE(?, expiry_date), vacuum_sealed = ?, updated_at = CURRENT_TIMESTAMP WHERE id = ?");
         $stmt->execute([$newQty, $expiry, $vacuumSealed, $existing['id']]);
     } else {
         $newQty = $quantity;
-        // Insert new inventory entry
+        // All existing rows (if any) are opened packs — insert a new sealed row
         $stmt = $db->prepare("INSERT INTO inventory (product_id, location, quantity, expiry_date, vacuum_sealed) VALUES (?, ?, ?, ?, ?)");
         $stmt->execute([$productId, $location, $quantity, $expiry, $vacuumSealed]);
     }
@@ -4296,6 +4357,7 @@ function getServerSettings(): void {
         'shopping_forecast'           => env('SHOPPING_FORECAST', 'true') === 'true',
         'shopping_auto_add_threshold' => (int)env('SHOPPING_AUTO_ADD_THRESHOLD', '0'),
         'dark_mode'                   => env('DARK_MODE', 'auto'),
+        'barcode_ai_fallback'         => env('BARCODE_AI_FALLBACK', 'false') === 'true',
         // Home Assistant Integration
         'ha_enabled'                  => env('HA_ENABLED', 'false') === 'true',
         'ha_url'                      => env('HA_URL', ''),
@@ -4398,6 +4460,7 @@ function saveSettings(): void {
         'shopping_enabled'           => 'SHOPPING_ENABLED',
         'shopping_smart_suggestions' => 'SHOPPING_SMART_SUGGESTIONS',
         'shopping_forecast'          => 'SHOPPING_FORECAST',
+        'barcode_ai_fallback' => 'BARCODE_AI_FALLBACK',
         // Home Assistant
         'ha_enabled'    => 'HA_ENABLED',
     ];
@@ -8861,7 +8924,9 @@ function smartShopping(PDO $db): void {
         $expiryDate = $inv ? $inv['nearest_expiry'] : null;
         $daysToExpiry = $expiryDate ? (strtotime($expiryDate) - $now) / 86400 : 999;
         $isExpired = $daysToExpiry < 0;
-        $isExpiringSoon = !$isExpired && $daysToExpiry <= 3;
+        // 7-day warning window: enough to plan the next shopping trip.
+        // The tighter 3-day threshold was often too late for staple products.
+        $isExpiringSoon = !$isExpired && $daysToExpiry <= 7;
 
         // Fresh (non-expired) quantity — used for suppression when only part of stock is expired
         $freshQty = $inv ? (float)($inv['fresh_qty'] ?? $qty) : 0;
@@ -8994,31 +9059,48 @@ function smartShopping(PDO $db): void {
             }
         }
 
-        // Expiring soon or expired (needs replacement) — valid regardless of frequency
+        // Expiring soon or expired (needs replacement)
         if ($isExpired && $qty > 0) {
             // Check if the product's shopping_name FAMILY has adequate FRESH stock
             // from other (non-expired) products. If so, no need to buy more.
             $sNameKey = strtolower(trim($p['shopping_name'] ?? ''));
             $familyFreshQty = $sNameKey !== '' ? ($freshStockByShoppingName[$sNameKey] ?? 0) : 0;
-            // Subtract this product's own qty (it is expired, so fresh_qty=0 for it anyway)
             $refQtyLocal = $refQty > 0 ? $refQty : 1;
             $familyFreshPct = min(200, ($familyFreshQty / $refQtyLocal) * 100);
 
             if (($justRestocked && $freshPctLeft >= 50) || $familyFreshPct >= 50) {
                 // Fresh stock from this product or same-family products is adequate.
                 // The expired batch will show in the dashboard expiry banner — don't add to shopping list.
-            } else {
+            } elseif ($isRegular || $buyCount >= 2) {
+                // Only suggest restocking if this is a product the user buys regularly.
+                // If it expired without ever being a staple, the expiry banner is enough.
                 $urgency = 'critical';
                 $reasons[] = 'Scaduto!';
                 $score += 90;
             }
-        } elseif ($isExpiringSoon && $qty > 0 && $pctLeft < 50) {
-            // Only flag "expiring soon" if stock is also low (<50%). If you have plenty of
-            // stock (e.g. just bought fresh produce that naturally expires in 3 days), the
-            // shopping list is not the right place — the expiry banner handles it.
-            if ($urgency === 'none') $urgency = 'medium';
-            $reasons[] = 'Scade tra ' . max(0, round($daysToExpiry)) . 'gg';
-            $score += 40;
+            // else: one-off product expired unused → expiry banner handles it, no shopping noise
+        } elseif ($isExpiringSoon && $qty > 0) {
+            // Flag if:
+            // (a) regular consumer + stock low (<50%) → needs restock soon
+            // (b) regular consumer + will expire before finishing it
+            //     (daysLeft based on consumption rate > days to expiry)
+            // (c) non-regular + within 3 days + low stock → minimal safety net
+            $willExpireBeforeUsed = $dailyRate > 0 && $daysToExpiry < $daysLeft;
+            if ($isRegular && ($pctLeft < 50 || $willExpireBeforeUsed)) {
+                if ($urgency === 'none') $urgency = 'medium';
+                if ($willExpireBeforeUsed && $pctLeft >= 50) {
+                    // Has stock but won't finish it in time → buy fresh and use this one now
+                    $reasons[] = 'Scade in ' . max(1, round($daysToExpiry)) . 'gg — ricompra';
+                } else {
+                    $reasons[] = 'Scade in ' . max(1, round($daysToExpiry)) . 'gg';
+                }
+                $score += 40;
+            } elseif (!$isRegular && $daysToExpiry <= 3 && $pctLeft < 50) {
+                // Non-regular product: only flag when very close and running low
+                if ($urgency === 'none') $urgency = 'low';
+                $reasons[] = 'Scade in ' . max(1, round($daysToExpiry)) . 'gg';
+                $score += 20;
+            }
         }
 
         // Frequently used but stock getting low (predictive) — scale urgency by imminence
@@ -10418,6 +10500,101 @@ function geminiNumberOCR(): void {
     }
 }
 
+// =============================================================================
+// ===== GEMINI AI: BARCODE VISUAL FALLBACK ====================================
+// =============================================================================
+/**
+ * POST /api/?action=gemini_barcode_visual
+ * Body: { image: base64-jpeg, lang: 'it'|'en'|'de'|... }
+ * Returns: { found, source, product } or { found: false, error }
+ * Uses Gemini vision to visually identify a product from a camera frame
+ * when the barcode scanner fails to read the barcode after 5 seconds.
+ */
+function geminiBarcodeVisual(): void {
+    EverLog::info('geminiBarcodeVisual');
+    $apiKey = env('GEMINI_API_KEY');
+    if (empty($apiKey)) {
+        echo json_encode(['found' => false, 'error' => 'no_api_key']);
+        return;
+    }
+
+    $input = json_decode(file_get_contents('php://input'), true) ?? [];
+    $imageBase64 = $input['image'] ?? '';
+    $lang = $input['lang'] ?? 'it';
+    if (empty($imageBase64)) {
+        echo json_encode(['found' => false, 'error' => 'no_image']);
+        return;
+    }
+
+    $langNote = match($lang) {
+        'de'    => 'Use the German product name if known.',
+        'fr'    => 'Use the French product name if known.',
+        'es'    => 'Use the Spanish product name if known.',
+        default => 'Use the Italian product name if known.',
+    };
+
+    $payload = [
+        'contents' => [[
+            'parts' => [
+                ['text' => "Identify the product shown in this image. {$langNote}\n" .
+                           "Respond with ONLY valid JSON (no markdown, no backticks):\n" .
+                           "{\"name\":\"...\",\"brand\":\"...\",\"category\":\"...\"}\n" .
+                           "- name: the product name (as specific as possible, not just the brand)\n" .
+                           "- brand: the brand/manufacturer, or empty string if not visible\n" .
+                           "- category: one of: latticini, pasta, bevande, snack, carne, pesce, " .
+                           "frutta, verdura, surgelati, condimenti, conserve, cereali, pane, " .
+                           "igiene, pulizia, altro\n" .
+                           "If you cannot identify the product at all, respond with: {\"unknown\":true}"],
+                ['inline_data' => ['mime_type' => 'image/jpeg', 'data' => $imageBase64]],
+            ],
+        ]],
+        'generationConfig' => [
+            'temperature'      => 0,
+            'maxOutputTokens'  => 200,
+            'responseMimeType' => 'application/json',
+            'thinkingConfig'   => ['thinkingBudget' => 0],
+        ],
+    ];
+
+    $result = callGeminiWithFallback($apiKey, $payload, 15, 'barcode_visual');
+    if ($result['http_code'] !== 200) {
+        echo json_encode(['found' => false, 'error' => 'gemini_error_' . $result['http_code']]);
+        return;
+    }
+
+    $text = trim($result['data']['candidates'][0]['content']['parts'][0]['text'] ?? '');
+    // Strip accidental markdown fences
+    $text = preg_replace('/^```json\s*/i', '', $text);
+    $text = preg_replace('/\s*```$/i', '', trim($text));
+
+    $data = json_decode($text, true);
+    if (!$data || !empty($data['unknown']) || empty($data['name'])) {
+        echo json_encode(['found' => false]);
+        return;
+    }
+
+    echo json_encode([
+        'found'   => true,
+        'source'  => 'gemini_visual',
+        'product' => [
+            'name'          => $data['name']     ?? '',
+            'brand'         => $data['brand']    ?? '',
+            'category'      => $data['category'] ?? '',
+            'image_url'     => '',
+            'quantity_info' => '',
+            'nutriscore'    => '',
+            'ingredients'   => '',
+            'allergens'     => '',
+            'conservation'  => '',
+            'origin'        => '',
+            'nova_group'    => '',
+            'ecoscore'      => '',
+            'labels'        => '',
+            'stores'        => '',
+        ],
+    ], JSON_UNESCAPED_UNICODE);
+}
+
 // =============================================================================
 // ===== GEMINI AI: ANOMALY EXPLANATION =======================================
 // =============================================================================

assets/js/app.js

@@ -1943,6 +1943,8 @@ let quaggaRunning = false;
 let aiStream = null;
 let _scanZoomLevel = 2; // always 2x
 let _torchActive = false;
+let _aiFallbackTimer = null;
+let _aiFallbackExhausted = false; // true after one failed AI visual attempt — reset when scanner is closed
 
 // Apply fixed 2x zoom (hardware if available, CSS fallback)
 async function _applyFixedZoom() {
@@ -2083,13 +2085,15 @@ function _showScanConfirm(name) {
 
 // ===== AI NUMBER OCR (Gemini reads printed barcode digits) =====
 let _numOcrRunning = false;
-async function _tryGeminiNumberOCR() {
+async function _tryGeminiNumberOCR(options = {}) {
+    const { chainToVisual = false } = options;
     if (_numOcrRunning || !_requireGemini()) return;
     const video = document.getElementById('scanner-video');
     if (!video || !video.videoWidth) { showToast(t('error.camera'), 'error'); return; }
     _numOcrRunning = true;
     const btn = document.getElementById('scan-num-ocr-btn');
     if (btn) { btn.disabled = true; btn.textContent = t('scan.num_ocr_searching'); }
+    _setScanStatus(t('scan.status_ocr_searching'), 'retry', t('scan.method_ai_ocr'));
     try {
         const canvas = document.createElement('canvas');
         canvas.width = video.videoWidth;
@@ -2098,12 +2102,28 @@ async function _tryGeminiNumberOCR() {
         const imageBase64 = canvas.toDataURL('image/jpeg', 0.88).split(',')[1];
         const result = await api('gemini_number_ocr', {}, 'POST', { image: imageBase64 });
         if (result.barcode) {
+            scanLog(`AI OCR: found barcode ${result.barcode}`);
             showToast(t('scan.num_ocr_found').replace('{code}', result.barcode), 'success');
             onBarcodeDetected(result.barcode);
         } else {
-            showToast(t('scan.num_ocr_not_found'), 'warning');
+            scanLog('AI OCR: barcode digits not found');
+            if (chainToVisual && scannerStream && !_aiFallbackExhausted) {
+                scanLog('AI OCR failed — switching to visual product identification');
+                _setScanStatus(t('scan.status_ai_visual_searching'), 'retry', t('scan.method_ai_vision'));
+                await _tryGeminiVisualBarcode();
+            } else {
+                showToast(t('scan.num_ocr_not_found'), 'warning');
+                _setScanStatus(t('scan.status_scanning'), '', '');
+            }
         }
     } catch(e) {
+        scanLog(`AI OCR error: ${e.message}`);
+        if (chainToVisual && scannerStream && !_aiFallbackExhausted) {
+            _setScanStatus(t('scan.status_ai_visual_searching'), 'retry', t('scan.method_ai_vision'));
+            await _tryGeminiVisualBarcode();
+        } else {
+            _setScanStatus(t('scan.status_scanning'), '', '');
+        }
         showToast(t('error.connection'), 'error');
     } finally {
         _numOcrRunning = false;
@@ -2111,6 +2131,225 @@ async function _tryGeminiNumberOCR() {
     }
 }
 
+// ===== AI VISUAL PRODUCT IDENTIFICATION (auto-fallback after 5s) =====
+let _aiBarcodeVisualRunning = false;
+let _aiDetectedProductDraft = null;
+let _aiInventoryCandidates = [];
+
+function _showScanAiOverlay(msg) {
+    const el = document.getElementById('scan-ai-overlay');
+    const msgEl = document.getElementById('scan-ai-overlay-msg');
+    if (el) el.style.display = 'flex';
+    if (msgEl) msgEl.textContent = msg || '';
+}
+function _hideScanAiOverlay() {
+    const el = document.getElementById('scan-ai-overlay');
+    if (el) el.style.display = 'none';
+}
+function _showAiRetryButton() {
+    const btn = document.getElementById('scan-ai-retry-btn');
+    if (btn) btn.style.display = '';
+}
+function _clearAiMatchPanel() {
+    const result = document.getElementById('scan-result');
+    if (!result) return;
+    result.style.display = 'none';
+    result.innerHTML = '';
+    _aiDetectedProductDraft = null;
+    _aiInventoryCandidates = [];
+}
+function _renderAiCandidateRow(item, idx) {
+    const catIcon = CATEGORY_ICONS[mapToLocalCategory(item.category, item.name)] || '📦';
+    const qty = (item.total_qty !== null && item.total_qty !== undefined)
+        ? `${parseFloat(item.total_qty)} ${item.unit || ''}`.trim()
+        : '';
+    return `
+        <button class="scan-ai-candidate-item" type="button" onclick="_selectAiInventoryCandidate(${idx})">
+            <span class="scan-ai-candidate-icon">${catIcon}</span>
+            <span class="scan-ai-candidate-info">
+                <span class="scan-ai-candidate-name">${escapeHtml(item.name || '')}</span>
+                <span class="scan-ai-candidate-meta">${escapeHtml((item.brand || '') + (qty ? ' · ' + qty : ''))}</span>
+            </span>
+            <span class="scan-ai-candidate-cta">${t('scan.ai_match_use_btn')}</span>
+        </button>
+    `;
+}
+function _showAiMatchChoices(aiProduct, candidates) {
+    const result = document.getElementById('scan-result');
+    if (!result) return;
+    const aiName = aiProduct?.name || t('product.not_recognized');
+    const aiBrand = aiProduct?.brand || '';
+    const catIcon = CATEGORY_ICONS[mapToLocalCategory(aiProduct?.category || '', aiName)] || '📦';
+    const itemsHtml = (candidates || []).slice(0, 3).map((it, i) => _renderAiCandidateRow(it, i)).join('');
+
+    result.innerHTML = `
+        <div class="scan-ai-match-box">
+            <div class="scan-ai-match-head">
+                <div class="scan-ai-match-title">${t('scan.ai_match_title')}</div>
+                <div class="scan-ai-match-subtitle">${t('scan.ai_match_subtitle')}</div>
+            </div>
+
+            ${itemsHtml ? `
+                <div class="scan-ai-match-list-wrap">
+                    <div class="scan-ai-match-list-title">${t('scan.ai_match_existing')}</div>
+                    <div class="scan-ai-match-list">${itemsHtml}</div>
+                </div>
+            ` : `
+                <div class="scan-ai-match-empty">${t('scan.ai_match_none')}</div>
+            `}
+
+            <button class="btn btn-primary scan-ai-add-btn" type="button" onclick="_confirmAiDetectedProduct()">
+                ${t('scan.ai_match_add_btn').replace('{name}', escapeHtml(aiName))}
+            </button>
+            <div class="scan-ai-detected-label">${t('scan.ai_detected_label')}</div>
+            <div class="scan-ai-detected-pill">${catIcon} ${escapeHtml(aiName)}${aiBrand ? ' · ' + escapeHtml(aiBrand) : ''}</div>
+        </div>
+    `;
+    result.style.display = 'block';
+}
+async function _confirmAiDetectedProduct() {
+    const p = _aiDetectedProductDraft;
+    if (!p) return;
+    showLoading(true);
+    try {
+        const saveResult = await api('product_save', {}, 'POST', {
+            barcode: '',
+            name: p.name || t('product.not_recognized'),
+            brand: p.brand || '',
+            category: p.category || '',
+            image_url: '',
+            unit: 'pz',
+            default_quantity: 1,
+            package_unit: '',
+            notes: '',
+        });
+        if (saveResult.id) {
+            currentProduct = {
+                id: saveResult.id,
+                barcode: '',
+                name: p.name || t('product.not_recognized'),
+                brand: p.brand || '',
+                category: p.category || '',
+                image_url: '',
+                unit: 'pz',
+                default_quantity: 1,
+                package_unit: '',
+                _confCount: 0,
+                weight_info: '',
+            };
+            addToScanRecents(currentProduct);
+            _clearAiMatchPanel();
+            showLoading(false);
+            setTimeout(() => showProductAction(), 250);
+        } else {
+            showLoading(false);
+            showToast(t('error.connection'), 'error');
+        }
+    } catch (_) {
+        showLoading(false);
+        showToast(t('error.connection'), 'error');
+    }
+}
+function _selectAiInventoryCandidate(idx) {
+    const p = _aiInventoryCandidates[idx];
+    if (!p) return;
+    currentProduct = {
+        id: p.id,
+        barcode: p.barcode || '',
+        name: p.name || '',
+        brand: p.brand || '',
+        category: p.category || '',
+        image_url: p.image_url || '',
+        unit: p.unit || 'pz',
+        default_quantity: p.default_quantity || 1,
+        package_unit: p.package_unit || '',
+        _confCount: 0,
+        weight_info: '',
+    };
+    if (p.notes) {
+        const pesoMatch = p.notes.match(/Peso:\s*([^·]+)/);
+        if (pesoMatch) currentProduct.weight_info = pesoMatch[1].trim();
+    }
+    addToScanRecents(currentProduct);
+    _clearAiMatchPanel();
+    setTimeout(() => showProductAction(), 250);
+}
+async function _retryAiScan() {
+    const btn = document.getElementById('scan-ai-retry-btn');
+    if (btn) btn.style.display = 'none';
+    _aiFallbackExhausted = false;
+    _clearAiMatchPanel();
+    await _tryGeminiNumberOCR({ chainToVisual: true });
+}
+
+async function _tryGeminiVisualBarcode() {
+    if (_aiBarcodeVisualRunning || !_requireGemini()) return;
+    const video = document.getElementById('scanner-video');
+    if (!video || !video.videoWidth) return;
+
+    // ★ Capture the frame BEFORE stopping the stream — after stopScanner() the
+    //   video element is blanked and drawImage would send a black image to Gemini.
+    const canvas = document.createElement('canvas');
+    canvas.width  = video.videoWidth;
+    canvas.height = video.videoHeight;
+    canvas.getContext('2d').drawImage(video, 0, 0);
+    const imageBase64 = canvas.toDataURL('image/jpeg', 0.88).split(',')[1];
+    if (!imageBase64) { scanLog('AI visual: failed to capture frame'); return; }
+
+    _aiBarcodeVisualRunning = true;
+    stopScanner(); // stop scanner loop while AI processes (stream already captured above)
+    _setScanStatus(t('scan.status_ai_visual_searching'), 'retry', t('scan.method_ai_vision'));
+    _showScanAiOverlay(t('scan.ai_overlay_msg'));
+
+    try {
+        const result = await api('gemini_barcode_visual', {}, 'POST', {
+            image: imageBase64,
+            lang: _currentLang || 'it',
+        });
+
+        if (result.found && result.product) {
+            const p = result.product;
+            scanLog(`AI visual: found "${p.name}" (${p.brand})`);
+            _hideScanAiOverlay();
+            showToast(t('scan.ai_fallback_found'), 'success');
+            _aiDetectedProductDraft = {
+                name: p.name || t('product.not_recognized'),
+                brand: p.brand || '',
+                category: p.category || '',
+            };
+            let candidates = [];
+            try {
+                const invRes = await api('inventory_search', {
+                    q: _aiDetectedProductDraft.name,
+                    limit: 3,
+                });
+                candidates = (invRes.items || []).slice(0, 3);
+            } catch (_) {
+                candidates = [];
+            }
+            _aiInventoryCandidates = candidates;
+            _showAiMatchChoices(_aiDetectedProductDraft, candidates);
+        } else {
+            scanLog('AI visual: product not identified — exhausted for this session');
+            _aiFallbackExhausted = true;
+            _hideScanAiOverlay();
+            _setScanStatus(t('scan.ai_fallback_exhausted'), 'retry', '');
+            _showAiRetryButton();
+            // Restart barcode scanner — AI timer won't fire again (_aiFallbackExhausted=true).
+            setTimeout(() => initScanner(), 300);
+        }
+    } catch (e) {
+        scanLog(`AI visual error: ${e.message}`);
+        _aiFallbackExhausted = true;
+        _hideScanAiOverlay();
+        _setScanStatus(t('scan.ai_fallback_exhausted'), 'retry', '');
+        _showAiRetryButton();
+        setTimeout(() => initScanner(), 300);
+    } finally {
+        _aiBarcodeVisualRunning = false;
+    }
+}
+
 // ===== CAMERA HELPER =====
 function getCameraConstraints(extraVideo = {}) {
     const s = getSettings();
@@ -2296,6 +2535,7 @@ function _applySyncedSettings(serverSettings) {
         'shopping_enabled','shopping_mode','shopping_smart_suggestions',
         'shopping_forecast','shopping_auto_add_threshold',
         'dark_mode',
+        'barcode_ai_fallback',
         // Home Assistant
         'ha_enabled','ha_url','ha_tts_entity','ha_webhook_id','ha_webhook_events',
         'ha_notify_service','ha_expiry_days'];
@@ -2887,6 +3127,8 @@ async function loadSettingsUI() {
     const cameraSelect = document.getElementById('setting-camera-facing');
     if (cameraSelect) cameraSelect.value = s.camera_facing || 'environment';
     loadCameraDevices();
+    const baifEl = document.getElementById('setting-barcode-ai-fallback');
+    if (baifEl) baifEl.checked = s.barcode_ai_fallback === true;
     renderAppliances(s.appliances || []);
     const mealPlanEnabled = s.meal_plan_enabled !== false;
     const mpEnabledEl = document.getElementById('setting-meal-plan-enabled');
@@ -3465,6 +3707,8 @@ async function saveSettings() {
     s.dietary = document.getElementById('setting-dietary').value.trim();
     // Camera
     s.camera_facing = document.getElementById('setting-camera-facing').value;
+    const baifSave = document.getElementById('setting-barcode-ai-fallback');
+    if (baifSave) s.barcode_ai_fallback = baifSave.checked;
     // Screensaver
     const ssEl = document.getElementById('setting-screensaver-enabled');
     if (ssEl) s.screensaver_enabled = ssEl.checked;
@@ -3608,6 +3852,7 @@ async function saveSettings() {
             shopping_forecast:           s.shopping_forecast !== false,
             shopping_auto_add_threshold: s.shopping_auto_add_threshold || 0,
             dark_mode:                   s.dark_mode || 'auto',
+            barcode_ai_fallback:          !!s.barcode_ai_fallback,
             // Home Assistant
             ha_enabled:         !!s.ha_enabled,
             ha_url:             s.ha_url || '',
@@ -3748,6 +3993,18 @@ async function api(action, params = {}, method = 'GET', body = null, extraHeader
 // Track current page for auto-refresh
 let _currentPageId = 'dashboard';
 let _currentPageParam = null;
+let _pageHistory = [{ pageId: 'dashboard', param: null }];
+
+function goBack(fallbackPage = 'dashboard') {
+    if (_pageHistory.length > 1) {
+        // Drop current page and navigate to the previous entry without re-adding history.
+        _pageHistory.pop();
+        const prev = _pageHistory[_pageHistory.length - 1] || { pageId: fallbackPage, param: null };
+        showPage(prev.pageId, prev.param, { skipHistory: true });
+        return;
+    }
+    showPage(fallbackPage, null, { skipHistory: true });
+}
 
 // Refresh current page data without full navigation
 function refreshCurrentPage() {
@@ -3765,7 +4022,17 @@ function refreshCurrentPage() {
     }
 }
 
-function showPage(pageId, param = null) {
+function showPage(pageId, param = null, options = {}) {
+    const skipHistory = !!options.skipHistory;
+    if (!skipHistory) {
+        const last = _pageHistory[_pageHistory.length - 1];
+        const sameAsLast = !!last && last.pageId === pageId && (last.param ?? null) === (param ?? null);
+        if (!sameAsLast) {
+            _pageHistory.push({ pageId, param });
+            if (_pageHistory.length > 80) _pageHistory.shift();
+        }
+    }
+
     _currentPageId = pageId;
     _currentPageParam = param;
     // Hide all pages
@@ -3797,7 +4064,7 @@ function showPage(pageId, param = null) {
             }
             loadInventory();
             break;
-        case 'scan': initScanner(); clearQuickNameResults(); updateSpesaBanner(); updateScanRecents(); switchScanTab('barcode');
+        case 'scan': _aiFallbackExhausted = false; _hideScanAiOverlay(); { const _rb = document.getElementById('scan-ai-retry-btn'); if (_rb) _rb.style.display = 'none'; } initScanner(); clearQuickNameResults(); updateSpesaBanner(); updateScanRecents(); switchScanTab('barcode');
             // Pre-warm the embedding model the first time user visits scan page
             if (typeof window._getCategoryPipeline === 'function' && !window._categoryPipelineReady) {
                 window._getCategoryPipeline(); // fire-and-forget
@@ -4942,10 +5209,11 @@ async function loadBannerAlerts() {
     if (!banner) { _bannerLoading = false; console.warn('[Banner] #alert-banner not found'); return; }
 
     try {
-        const [invData, predData, anomalyData, finishedData, statsData] = await Promise.all([
+        const [invData, predData, anomalyData, dupLossData, finishedData, statsData] = await Promise.all([
             api('inventory_list'),
             api('consumption_predictions').catch(err => { console.warn('[Banner] predictions fetch failed:', err); return { predictions: [] }; }),
             api('inventory_anomalies').catch(err => { console.warn('[Banner] anomalies fetch failed:', err); return { anomalies: [] }; }),
+            api('inventory_duplicate_loss_checks').catch(err => { console.warn('[Banner] duplicate loss checks fetch failed:', err); return { checks: [] }; }),
             api('inventory_finished_items').catch(err => { console.warn('[Banner] finished_items fetch failed:', err); return { finished: [] }; }),
             api('stats').catch(() => ({ opened: [] })),
         ]);
@@ -5069,14 +5337,21 @@ async function loadBannerAlerts() {
             _bannerQueue.push({ type: 'anomaly', data: an });
         });
 
-        // 6. Finished products: inventory hit 0, waiting for user confirmation
+        // 6. Potentially lost products due to rapid duplicate "out" events
+        const dupChecks = dupLossData.checks || [];
+        dupChecks.forEach(ch => {
+            if (confirmed['dup_' + ch.dismiss_key]) return;
+            _bannerQueue.push({ type: 'dup_loss_check', data: ch });
+        });
+
+        // 7. Finished products: inventory hit 0, waiting for user confirmation
         const finished = finishedData.finished || [];
         finished.forEach(fin => {
             if (confirmed['fin_' + fin.product_id]) return;
             _bannerQueue.push({ type: 'finished', data: fin });
         });
 
-        // 7. Products with no expiry date set (and not permanently dismissed)
+        // 8. Products with no expiry date set (and not permanently dismissed)
         // Warn for ALL food/drink items — only skip igiene/pulizia (non-food).
         // Items are capped at 8 per load (opened packages first) to avoid banner overflow.
         const noExpiryDismissed = _getNoExpiryDismissed();
@@ -5157,6 +5432,8 @@ function _bannerPriority(entry) {
             // Phantom (inflated qty) = 250, Missing = 260 (slightly higher, means data is clearly wrong)
             return entry.data.direction === 'missing' ? 260 : 250;
         }
+        case 'dup_loss_check':
+            return 700; // high-priority check: likely double-consume loss
         case 'finished':
             return 600; // product ran out — confirm before removing from DB
         case 'no_expiry':
@@ -5358,6 +5635,30 @@ function renderBannerItem() {
         }
         actionsEl.innerHTML = btns;
 
+    } else if (entry.type === 'dup_loss_check') {
+        const ch = entry.data;
+        banner.className = 'alert-banner banner-dup-loss';
+        iconEl.textContent = '🧪';
+
+        const locInfo = LOCATIONS[ch.location] || { icon: '📦', label: ch.location || '—' };
+        const locText = `${locInfo.icon} ${locInfo.label}`;
+        const qtyPair = `${ch.q1} + ${ch.q2}`;
+
+        titleEl.textContent = t('dashboard.banner_dup_loss_title').replace('{name}', ch.name);
+        detailEl.textContent = t('dashboard.banner_dup_loss_detail')
+            .replace('{location}', locText)
+            .replace('{seconds}', Math.round(ch.dt_sec || 0))
+            .replace('{qty_pair}', qtyPair);
+
+        let btns = '';
+        if (ch.inventory_id && ch.inventory_id > 0) {
+            btns += `<button class="btn-banner btn-banner-edit" onclick="editReviewItem(${ch.inventory_id}, ${ch.product_id})">${t('dashboard.banner_dup_loss_action_fix')}</button>`;
+        } else {
+            btns += `<button class="btn-banner btn-banner-edit" onclick="openDuplicateLossCheck(${ch.product_id})">${t('dashboard.banner_dup_loss_action_open')}</button>`;
+        }
+        btns += `<button class="btn-banner btn-banner-ok" onclick="dismissDuplicateLossCheck()">${t('dashboard.banner_dup_loss_action_done')}</button>`;
+        actionsEl.innerHTML = btns;
+
     } else if (entry.type === 'no_expiry') {
         const item = entry.data;
         banner.className = 'alert-banner banner-no-expiry';
@@ -5495,6 +5796,32 @@ function dismissBannerAnomaly() {
     dismissBannerItem();
 }
 
+function dismissDuplicateLossCheck() {
+    const entry = _bannerQueue[_bannerIndex];
+    if (!entry || entry.type !== 'dup_loss_check') return;
+    const key = entry.data.dismiss_key;
+    setReviewConfirmed('dup_' + key);
+    showToast(t('dashboard.banner_dup_loss_toast_done'), 'success');
+    dismissBannerItem();
+}
+
+async function openDuplicateLossCheck(productId) {
+    showLoading(true);
+    try {
+        const data = await api('product_get', { id: productId });
+        if (data.product) {
+            currentProduct = data.product;
+            showProductAction();
+        } else {
+            showToast(t('error.not_found'), 'error');
+        }
+    } catch (e) {
+        showToast(t('error.connection'), 'error');
+    } finally {
+        showLoading(false);
+    }
+}
+
 function weighBannerItem() {
     const entry = _bannerQueue[_bannerIndex];
     if (!entry) return;
@@ -6489,11 +6816,14 @@ async function initScanner() {
     
     const constraints = getCameraConstraints();
     scanLog(`Camera mode: ${getSettings().camera_facing || 'environment'}`);
-    scanLog(`BarcodeDetector: ${_useBarcodeDetector ? 'YES (native)' : 'NO (Quagga fallback)'}`);
+    scanLog(`BarcodeDetector: ${_useBarcodeDetector ? 'YES (native)' : 'NO (fallback)'}`);
+    scanLog(`Gemini available: ${_geminiAvailable}`);
+    scanLog(`AI fallback enabled: ${getSettings().barcode_ai_fallback === true}`);
     scanLog(`Constraints: ${JSON.stringify(constraints.video)}`);
     
     try {
         stopScanner();
+        _clearAiMatchPanel();
         
         const stream = await navigator.mediaDevices.getUserMedia(constraints);
         const track = stream.getVideoTracks()[0];
@@ -6528,6 +6858,17 @@ async function initScanner() {
             }, 4000);
         }
 
+        // After 5s without a scan, auto-trigger AI visual identification (if enabled)
+        if (_geminiAvailable && getSettings().barcode_ai_fallback && !_aiFallbackExhausted) {
+            clearTimeout(_aiFallbackTimer);
+            _aiFallbackTimer = setTimeout(() => {
+                if (scannerStream && !_aiFallbackExhausted) { // still scanning — no barcode found yet
+                    scanLog('5s elapsed without barcode — triggering AI OCR fallback');
+                    _tryGeminiNumberOCR({ chainToVisual: true });
+                }
+            }, 5000);
+        }
+        
     } catch (err) {
         scanLog(`CAMERA ERROR: ${err.name}: ${err.message}`);
         console.error('Camera error:', err);
@@ -6598,14 +6939,14 @@ async function startNativeScanner(videoEl) {
         
         if (frameCount === 1) {
             updateFeedback('scanning');
-            _setScanStatus(t('scan.status_scanning'), '', 'Native API');
+            _setScanStatus(t('scan.status_scanning'), '', '');
         }
 
         // After 2s without detection, also start Quagga in parallel as backup
         if (!quaggaParallelStarted && (Date.now() - startTime) > 2000) {
             quaggaParallelStarted = true;
-            scanLog('Native: 2s elapsed, spawning Quagga in parallel');
-            _setScanStatus(t('scan.status_parallel'), 'retry', 'Native + Quagga');
+            scanLog('Native: 2s elapsed, spawning fallback scanner in parallel');
+            _setScanStatus(t('scan.status_parallel'), 'retry', '');
             quaggaRunning = false; // temporarily release so Quagga can start
             startQuaggaScanner(videoEl, false);
             quaggaRunning = true; // re-take ownership (Quagga will share)
@@ -6637,6 +6978,13 @@ async function startNativeScanner(videoEl) {
                 // For other formats (code_128, code_39) require 2 to avoid false reads.
                 const highConfidence = ['ean_13','ean_8','upc_a','upc_e'].includes(format);
                 if (highConfidence || detectCount >= 2 || detectionHistory[code].count >= 2) {
+                    if (highConfidence && !validateEANChecksum(code)) {
+                        _invalidBarcodeCount++;
+                        scanLog(`Invalid EAN checksum (native): ${code} (retry #${_invalidBarcodeCount})`);
+                        _setScanStatus(t('scan.status_invalid').replace('{code}', code), 'invalid', 'Native');
+                        lastDetected = ''; detectCount = 0;
+                        return;
+                    }
                     scanning = false;
                     quaggaRunning = false;
                     updateFeedback(null);
@@ -6674,7 +7022,7 @@ function startQuaggaScanner(videoEl, isPrimary = true) {
     let frameCount = 0;
     let partialCount = 0;
     
-    scanLog(`Quagga starting — frontCam: ${frontCam}`);
+    scanLog(`Fallback scanner starting — frontCam: ${frontCam}`);
     
     let scanning = true;
     quaggaRunning = true;
@@ -6850,6 +7198,10 @@ function stopScanner() {
     quaggaRunning = false;
     _scanZoomLevel = 2; // always 2x on next start
     _torchActive = false;
+    clearTimeout(_aiFallbackTimer); _aiFallbackTimer = null;
+    // NOTE: _aiFallbackExhausted is intentionally NOT reset here.
+    // It is only reset in showPage('scan') so that internal stop/restart
+    // cycles (e.g. initScanner calling stopScanner) don't re-arm the AI timer.
     if (scannerStream) {
         scannerStream.getTracks().forEach(t => t.stop());
         scannerStream = null;
@@ -6861,6 +7213,7 @@ function stopScanner() {
     if (tb) tb.classList.remove('torch-on');
     // Hide live code
     _hideScanLiveCode();
+    _clearAiMatchPanel();
     // Also stop AI camera
     if (aiStream) {
         aiStream.getTracks().forEach(t => t.stop());
@@ -6871,6 +7224,7 @@ function stopScanner() {
 }
 
 async function onBarcodeDetected(barcode) {
+    clearTimeout(_aiFallbackTimer); _aiFallbackTimer = null;
     showLoading(true);
     
     // Vibrate if available
@@ -7026,7 +7380,7 @@ function autoSubmitEAN(inputEl, force = false) {
         if (!raw) { showToast(t('error.barcode_empty'), 'error'); inputEl.focus(); return; }
         if (!/^\d{4,14}$/.test(raw)) { showToast(t('error.barcode_format'), 'error'); inputEl.focus(); return; }
         if (isComplete && !isValid) {
-            showToast('⚠️ Checksum EAN errato — verifica le cifre', 'warning');
+            showToast(t('error.barcode_checksum'), 'error'); inputEl.focus(); return;
         }
         stopScanner();
         onBarcodeDetected(raw);
@@ -7781,7 +8135,7 @@ function showProductAction() {
     
     // Update back button: go back to shopping if came from shopping list scan
     const backBtn = document.getElementById('action-back-btn');
-    if (backBtn) backBtn.onclick = _spesaScanTarget ? () => { _spesaScanTarget = null; showPage('shopping'); } : () => showPage('scan');
+    if (backBtn) backBtn.onclick = () => goBack();
 
     // Show "shopping target" banner if we came from the shopping list
     const banner = document.getElementById('shopping-scan-target-banner');
@@ -7795,7 +8149,7 @@ function showProductAction() {
             </div>
             <div class="shopping-scan-target-actions">
                 <button class="btn btn-success stb-btn" onclick="confirmShoppingItemFound()">✅ ${t('shopping.scan_target_found')}</button>
-                <button class="btn btn-secondary stb-btn" onclick="_spesaScanTarget=null; document.getElementById('shopping-scan-target-banner').style.display='none'; document.getElementById('action-back-btn').onclick=()=>showPage('scan')">✕ ${t('btn.cancel')}</button>
+                <button class="btn btn-secondary stb-btn" onclick="_spesaScanTarget=null; document.getElementById('shopping-scan-target-banner').style.display='none'; document.getElementById('action-back-btn').onclick=()=>goBack()">✕ ${t('btn.cancel')}</button>
             </div>
         `;
     } else if (banner) {
@@ -13559,7 +13913,7 @@ async function toggleRecipeFavorite(btn) {
  * Scale recipe ingredient quantities (#123).
  * Delta: +1 or -1. Min 1, max 20 persons.
  */
-function adjustRecipePersons(delta) {
+function scaleRecipePersons(delta) {
     const newPersons = Math.max(1, Math.min(20, _recipeCurrentPersons + delta));
     if (newPersons === _recipeCurrentPersons) return;
     _recipeCurrentPersons = newPersons;
@@ -13604,9 +13958,9 @@ function renderRecipe(r) {
     html += '<div class="recipe-meta">';
     if (r.meal) html += `<span class="recipe-tag">${_mealLabel(r.meal)}</span>`;
     html += `<span class="recipe-tag recipe-persons-ctrl">
-        <button class="btn-persons-adj" onclick="adjustRecipePersons(-1)">−</button>
+        <button class="btn-persons-adj" onclick="scaleRecipePersons(-1)">−</button>
         <span id="recipe-persons-display">👥 ${r.persons} ${t('recipes.persons_short')}</span>
-        <button class="btn-persons-adj" onclick="adjustRecipePersons(+1)">+</button>
+        <button class="btn-persons-adj" onclick="scaleRecipePersons(+1)">+</button>
     </span>`;
     if (r.prep_time) html += `<span class="recipe-tag">🔪 ${r.prep_time}</span>`;
     if (r.cook_time) html += `<span class="recipe-tag">🔥 ${r.cook_time}</span>`;

index.html

@@ -64,7 +64,7 @@
         <div id="preloader-warnings" class="preloader-warnings" style="display:none"></div>
         <div id="preloader-error-msg" class="preloader-error-msg" style="display:none"></div>
         <button id="preloader-retry-btn" class="preloader-retry-btn" style="display:none" onclick="_startupRetry()">🔄 <span data-i18n="startup.retry">Riprova</span></button>
-        <span class="app-preloader-version" id="preloader-version">v1.7.25</span>
+        <span class="app-preloader-version" id="preloader-version">v1.7.35</span>
     </div>
 </div>
 
@@ -77,7 +77,7 @@
         <!-- Title — left-aligned; grows to fill space -->
         <div class="header-title-wrap">
             <h1 class="header-title" onclick="showPage('dashboard')">
-                <img src="assets/img/logo/logo_icon.png" alt="" class="header-logo-icon" aria-hidden="true" /><span data-i18n="nav.title">EverShelf</span><span class="header-version">v1.7.25</span>
+                <img src="assets/img/logo/logo_icon.png" alt="" class="header-logo-icon" aria-hidden="true" /><span data-i18n="nav.title">EverShelf</span><span class="header-version">v1.7.35</span>
             </h1>
             <!-- Update badge — shown alongside title, never replaces it -->
             <span class="header-update-badge" id="header-update-badge" style="display:none"></span>
@@ -194,7 +194,7 @@
     <!-- ===== INVENTORY LIST ===== -->
     <section class="page" id="page-inventory">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 id="inventory-title" data-i18n="inventory.title">Dispensa</h2>
             <button class="page-header-action-btn" onclick="_showExportModal()" title="Export" data-i18n-title="export.btn_title">📤</button>
         </div>
@@ -225,7 +225,7 @@
     <!-- ===== SCAN PAGE ===== -->
     <section class="page" id="page-scan">
         <div class="page-header">
-            <button class="back-btn" onclick="stopScanner(); showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="scan.title">Scansiona</h2>
             <button class="scan-spesa-chip" id="scan-spesa-btn" onclick="startSpesaMode()" data-i18n="scan.spesa_btn">🛒 Spesa</button>
         </div>
@@ -256,6 +256,14 @@
                     <span id="scan-status-method" class="scan-status-method"></span>
                     <span id="scan-status-msg" class="scan-status-msg" data-i18n="scan.status_ready"></span>
                 </div>
+                <!-- AI processing overlay (shown when Gemini Vision is analyzing) -->
+                <div class="scan-ai-overlay" id="scan-ai-overlay" style="display:none">
+                    <div class="scan-ai-overlay-inner">
+                        <div class="loading-spinner"></div>
+                        <span class="scan-ai-overlay-label">Gemini Vision</span>
+                        <span class="scan-ai-overlay-msg" id="scan-ai-overlay-msg"></span>
+                    </div>
+                </div>
                 <!-- Success flash overlay -->
                 <div class="scan-confirm-overlay" id="scan-confirm-overlay" style="display:none">
                     <div class="scan-confirm-check">✓</div>
@@ -274,6 +282,9 @@
             <!-- Scan errors -->
             <div class="scan-result" id="scan-result" style="display:none"></div>
 
+            <!-- AI retry button (shown after visual identification fails) -->
+            <button class="btn btn-accent scan-ai-retry-btn" id="scan-ai-retry-btn" style="display:none" onclick="_retryAiScan()" data-i18n="scan.ai_retry_btn">🤖 Riprova con AI</button>
+
             <!-- Recent scans -->
             <div class="scan-recents" id="scan-recents" style="display:none">
                 <span class="scan-recents-label" data-i18n="scan.recents_label">Recenti</span>
@@ -333,7 +344,7 @@
     <!-- ===== PRODUCT ACTION (IN/OUT after scan) ===== -->
     <section class="page" id="page-action">
         <div class="page-header">
-            <button class="back-btn" id="action-back-btn" onclick="showPage('scan')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" id="action-back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="action.title">Cosa vuoi fare?</h2>
         </div>
         <!-- Banner: shopping list scan context -->
@@ -356,7 +367,7 @@
     <!-- ===== ADD TO INVENTORY FORM ===== -->
     <section class="page" id="page-add">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('action')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="add.title">Aggiungi alla Dispensa</h2>
         </div>
         <div class="product-preview-small" id="add-product-preview"></div>
@@ -419,7 +430,7 @@
     <!-- ===== USE FROM INVENTORY FORM ===== -->
     <section class="page" id="page-use">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('action')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="use.title">Usa / Consuma</h2>
         </div>
         <div class="product-preview-small" id="use-product-preview"></div>
@@ -475,7 +486,7 @@
     <!-- ===== MANUAL / EDIT PRODUCT FORM ===== -->
     <section class="page" id="page-product-form">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('scan')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 id="product-form-title">Nuovo Prodotto</h2>
         </div>
         <form class="form" onsubmit="submitProduct(event)">
@@ -663,7 +674,7 @@
     <!-- ===== ALL PRODUCTS PAGE ===== -->
     <section class="page" id="page-products">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="products.title">📦 Tutti i Prodotti</h2>
         </div>
         <div class="search-bar">
@@ -675,7 +686,7 @@
     <!-- ===== RECIPE PAGE ===== -->
     <section class="page" id="page-recipe">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="recipes.title">🍳 Ricette</h2>
         </div>
         <div class="recipe-page-container">
@@ -689,7 +700,7 @@
     <!-- ===== SHOPPING LIST (BRING!) PAGE ===== -->
     <section class="page" id="page-shopping">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="shopping.title">🛒 Lista della Spesa</h2>
         </div>
         <div class="shopping-container">
@@ -797,7 +808,7 @@
     <!-- ===== AI IDENTIFICATION PAGE ===== -->
     <section class="page" id="page-ai">
         <div class="page-header">
-            <button class="back-btn" onclick="stopScanner(); showPage('scan')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="ai.title">🤖 Identificazione AI</h2>
         </div>
         <div class="ai-container">
@@ -835,7 +846,7 @@
     <!-- ===== SETTINGS PAGE ===== -->
     <section class="page" id="page-settings">
         <div class="page-header">
-            <button class="back-btn" onclick="showPage('dashboard')" data-i18n="btn.back">← Indietro</button>
+            <button class="back-btn" onclick="goBack()" data-i18n="btn.back">← Indietro</button>
             <h2 data-i18n="settings.title">⚙️ Configurazione</h2>
         </div>
         <div class="settings-tabs">
@@ -1183,6 +1194,16 @@
                         <p class="settings-hint mt-2" data-i18n="settings.camera.devices_hint">Se hai più fotocamere, puoi selezionarne una specifica dall'elenco sopra dopo aver concesso i permessi.</p>
                         <button class="btn btn-small btn-secondary mt-2" onclick="loadCameraDevices()" data-i18n="settings.camera.detect_btn">🔄 Rileva fotocamere</button>
                     </div>
+                    <div class="form-group" style="margin-top:14px">
+                        <label class="toggle-row">
+                            <span data-i18n="settings.camera.ai_fallback_label">Identificazione visiva AI (fallback 5s)</span>
+                            <span class="toggle-switch">
+                                <input type="checkbox" id="setting-barcode-ai-fallback">
+                                <span class="toggle-slider"></span>
+                            </span>
+                        </label>
+                        <p class="settings-hint mt-2" data-i18n="settings.camera.ai_fallback_hint">Se il codice a barre non viene letto entro 5 secondi, un fotogramma viene inviato automaticamente all'AI per identificare visivamente il prodotto. Richiede Gemini configurato.</p>
+                    </div>
                 </div>
             </div>
             <!-- Security Tab -->

manifest.json

@@ -2,7 +2,7 @@
     "name": "EverShelf",
     "short_name": "EverShelf",
     "description": "Gestione completa della dispensa di casa con scansione barcode",
-    "version": "1.7.25",
+    "version": "1.7.35",
     "start_url": "/evershelf/",
     "display": "standalone",
     "background_color": "#f0f4e8",