feat(inventory): local sharing — per-lot share terms, filter and printable catalog

The local half of the original Fase 2 (no network, no Offer entity yet):
- Lot sheet gains a 'do you share it?' choice (gift/swap first, sale last,
  never the default); declaring plenty of abundance reveals it with a nudge.
- Lot lines and list tiles badge shared batches; an 'I share' filter and
  a printable PDF catalog (paper bridge for fairs) round out the view.
- Catalog PDF embeds DejaVu (Latin-ext/Cyrillic/Greek); fonts are a
  per-locale resource like the OCR packs.

apps/app_seeds/lib/i18n/en.i18n.json

@@ -229,6 +229,20 @@
     "enoughForMe": "Enough for me",
     "runningLow": "Running low"
   },
+  "share": {
+    "add": "Do you share it?",
+    "title": "Do you share it?",
+    "nudge": "You have plenty — you could share some.",
+    "private": "Just for me",
+    "gift": "To give away",
+    "exchange": "To swap",
+    "sell": "For sale",
+    "filterChip": "I share",
+    "printCatalog": "Print what I share",
+    "catalogTitle": "What I share",
+    "catalogSaved": "Catalog saved",
+    "cancelled": "Cancelled"
+  },
   "cropCalendar": {
     "add": "Crop calendar",
     "title": "Crop calendar",