feat: AI suggestions, smart shopping qty, shelf life fixes, UX polish

- bringSuggestItems(): Gemini AI for seasonal/complementary suggestions (6h cache)
- renderSuggestions(): AI badge (🤖 AI) for AI-sourced items + CSS .priority-ai
- smartShopping(): suggested_qty/unit/approx with package-aware tiers
- autoSyncUrgencySpecs(): sync suggested quantities to Bring! spec field
- estimateOpenedExpiryDays(): dairy-outside-fridge rules (panna 3d, yogurt 2d, latte 1d)
- AI shelf-life upper bound tightened to max(rule×4, 30) days
- Opened section: fix 0g display (remainderAmt >= 0.5 threshold, pkgSize guard)
- guessCategoryFromName(): expanded with 50+ new patterns (uova, herbs, vegetables...)
- Suggestions panel: excludes already-added Bring! items
- Shopping list: no re-render while suggestions panel is open
- Translations: remove duplicate 🍳 from dashboard.quick_recipe (all 3 langs)
- Scale icon: always white via filter:brightness(0)invert(1)
- opened_shelf_cache.json: remove 3 bad dairy entries (60d outside fridge)

api/database.php

@@ -308,7 +308,12 @@ function estimateOpenedExpiryDaysPHP(string $name, string $category, string $loc
         if (preg_match('/\bpane\b/', $n)) return 4;
         // Specific jarred tomato sauce in pantry (opened, not refrigerated)
         if (preg_match('/salsa\s+di\s+(pomodoro|pronta)/', $n)) return 5;
-        return 60; // generic pantry fallback (was 30, doubled)
+        // Dairy opened outside fridge: bad very quickly at room temperature
+        if (preg_match('/\bpanna\b/', $n)) return 3;
+        if (preg_match('/\b(yogurt|yaourt|yoghurt)\b/', $n)) return 2;
+        if (preg_match('/\blatte\b/', $n)) return 1;
+        if (preg_match('/\bformaggio\b/', $n)) return 2;
+        return 60; // generic pantry fallback
     }
 
     // ── F: Fridge — short-life perishables ──────────────────────────────
@@ -317,7 +322,7 @@ function estimateOpenedExpiryDaysPHP(string $name, string $category, string $loc
     // Long-life mountain/brand milks stored in pantry before use (UHT)
     if (preg_match('/latte.*(montagna|alta\s+qual|parmalat|granarolo|esselunga|conservaz|microfiltrat)/i', $n)) return 7;
     if (preg_match('/\blatte\b/', $n)) return 4;
-    if (preg_match('/\byogurt\b/', $n)) return 5;
+    if (preg_match('/\b(yogurt|yaourt|yoghurt)\b/', $n)) return 5;
     if (preg_match('/mozzarella|burrata|stracciatella/', $n)) return 3;
     if (preg_match('/philadelphia|spalmabile/', $n)) return 7;
     if (preg_match('/formaggio.*(fresco|ricotta|mascarpone|stracchino|crescenza)/', $n)) return 5;