feat: HA sensor enrichment, inventory edit guard, recipe ingredient fix, bread shelf-life

- HA sensor: expiring_list now includes full product details (location, brand,
  category, days_remaining, opened_at, vacuum_sealed, default_quantity, etc.)
- HA sensor: new expired_list attribute with full product details per expired item
- HA sensor: new low_stock_list attribute (items with quantity ≤ 1, full details)
- HA sensor: new sensor=product endpoint (?action=ha_sensor&sensor=product)
  with optional filters: &id=, &name=, &location=
- HA cron webhook: expiry alert items now carry full product details
- Inventory edit: confirm dialog when quantity exceeds unit-specific threshold
  (prevents data loss from unit-confusion typos, e.g. 183 conf instead of 0.183)
- Recipe AI: explicit rule against ingredient form substitution
  (fresh tomatoes ≠ passata, fresh milk ≠ UHT ≠ cream, etc.)
- Shelf-life: opened bread rules (piadina 2d, bauletto/pancarrè 4d, pane 3d)
- docs/wiki: HA page updated with new schema, examples, product endpoint

Closes #125

translations/en.json

@@ -1086,11 +1086,13 @@
         "offline_ai_disabled": "Not available offline",
         "offline_cache_ready": "Offline — {n} items cached"
     },
+    "confirm_placeholder_search": null,
     "confirm": {
         "remove_item": "Do you really want to remove this product from inventory?",
         "kiosk_exit": "Exit kiosk mode?",
         "cancel": "Cancel",
-        "proceed": "Confirm"
+        "proceed": "Confirm",
+        "discard_one": "Discard 1 piece"
     },
     "location": {
         "dispensa": "Pantry",
@@ -1102,7 +1104,8 @@
         "unknown_hint": "Enter the product name and information",
         "label_name": "🏷️ Product name",
         "choose_location_title": "Which location?",
-        "choose_location_hint": "Choose the location to edit:"
+        "choose_location_hint": "Choose the location to edit:",
+        "confirm_large_qty": "You are setting the quantity to {qty} {unit}. This seems unusually high. Confirm?"
     },
     "screensaver": {
         "recipe_btn": "Recipes",