feat(plantare): usable UI — commitments screen, add sheet, entry points

The reproduction-commitment (Plantare) UI, local-first and plain-spoken:
- A Plantares screen (drawer entry, /plantares) listing your commitments,
  grouped Open / Done, with a big 'mark returned', a menu (let it go / reopen
  / remove) and an empty-state that explains what a Plantare is.
- An add sheet (scrollable): a two-choice 'who reproduces & returns' (I return
  / owed to me), an optional 'with whom', an optional 'what comes back' in the
  grower's own words, and a note. No sale, no currency — a promise.
- Reachable from a seed too: an 'Add a commitment' action on the variety
  detail, pre-attached to that variety.
- i18n en/es/pt/ast (human words: 'Plantare' + a plain explanation).

Added the Plantares screen to the small-phone overflow guard (18 cases green).

apps/app_seeds/lib/i18n/es.i18n.json

@@ -37,6 +37,7 @@
     "chat": "Chat",
     "wishlist": "Lista de deseos",
     "following": "Siguiendo",
+    "plantares": "Plantares",
     "settings": "Ajustes"
   },
   "settings": {
@@ -554,5 +555,29 @@
   },
   "notifications": {
     "newMessageFrom": "Nuevo mensaje de {name}"
+  },
+  "plantare": {
+    "title": "Plantares",
+    "help": "Un Plantare es el compromiso de reproducir una semilla y devolver una parte — así una variedad sigue viajando de mano en mano. No es una venta.",
+    "add": "Añadir compromiso",
+    "empty": "Aún no hay compromisos. Cuando compartas o recibas semilla con el compromiso de reproducirla y devolver algo, anótalo aquí.",
+    "iReturn": "La reproduzco y devuelvo yo",
+    "owedToMe": "Me la devuelven a mí",
+    "direction": "Quién reproduce y devuelve",
+    "counterparty": "¿Con quién?",
+    "counterpartyHint": "Una persona o un colectivo (opcional)",
+    "owed": "¿Qué se devuelve?",
+    "owedHint": "p. ej. un puñado la próxima temporada (opcional)",
+    "note": "Nota (opcional)",
+    "save": "Guardar",
+    "markReturned": "Marcar devuelto",
+    "markForgiven": "Dar por saldado",
+    "reopen": "Reabrir",
+    "delete": "Quitar",
+    "statusReturned": "Devuelto",
+    "statusForgiven": "Saldado",
+    "openSection": "Pendientes",
+    "settledSection": "Hechos",
+    "removeConfirm": "¿Quitar este compromiso?"
   }
 }