feat(app): hint isolation distance when sowing a cross-pollinating crop

One passive line in the batch story after a 'sown today' tap — 'this
species crosses, grow it ~400 m from others' — sourced from the bundled
seed-saving guidance (family default + species override). Selfers get
nothing: the trap is recording isolation religiously for beans where it
never mattered. No input fields, no schema change.

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

@@ -737,7 +737,8 @@
   "ratedMixed": "It did so-so",
   "ratedPoor": "It did poorly",
   "outcomeTitle": "Season note",
-  "outcomeYear": "Season {year}"
+  "outcomeYear": "Season {year}",
+  "isolationHint": "This species crosses with its neighbours — grow it about {meters} m away from others to keep it true"
  },
  "sale": {
   "title": "Sales",

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

@@ -736,7 +736,8 @@
   "ratedMixed": "Se dio regular",
   "ratedPoor": "Se dio mal",
   "outcomeTitle": "Nota de temporada",
-  "outcomeYear": "Temporada {year}"
+  "outcomeYear": "Temporada {year}",
+  "isolationHint": "Esta especie se cruza con sus vecinas — cultívala a unos {meters} m de otras para que se mantenga fiel"
  },
  "sale": {
   "title": "Ventas",

apps/app_seeds/lib/i18n/strings.g.dart

@@ -4,9 +4,9 @@
 /// To regenerate, run: `dart run slang`
 ///
 /// Locales: 7
-/// Strings: 3564 (509 per locale)
+/// Strings: 3566 (509 per locale)
 ///
-/// Built on 2026-07-18 at 10:23 UTC
+/// Built on 2026-07-18 at 10:28 UTC
 
 // coverage:ignore-file
 // ignore_for_file: type=lint, unused_import

apps/app_seeds/lib/i18n/strings_en.g.dart

@@ -2103,6 +2103,9 @@ class Translations$history$en {
 
 	/// en: 'Season {year}'
 	String outcomeYear({required Object year}) => 'Season ${year}';
+
+	/// en: 'This species crosses with its neighbours — grow it about {meters} m away from others to keep it true'
+	String isolationHint({required Object meters}) => 'This species crosses with its neighbours — grow it about ${meters} m away from others to keep it true';
 }
 
 // Path: sale
@@ -3359,6 +3362,7 @@ extension on Translations {
 			'history.ratedPoor' => 'It did poorly',
 			'history.outcomeTitle' => 'Season note',
 			'history.outcomeYear' => ({required Object year}) => 'Season ${year}',
+			'history.isolationHint' => ({required Object meters}) => 'This species crosses with its neighbours — grow it about ${meters} m away from others to keep it true',
 			'sale.title' => 'Sales',
 			'sale.help' => 'Record seed you sold or bought — money, Ğ1, or any currency. A separate model from a gift or a Plantare. No commission is ever taken on seeds.',
 			'sale.add' => 'Record a sale',

apps/app_seeds/lib/i18n/strings_es.g.dart

@@ -1074,6 +1074,7 @@ class _Translations$history$es extends Translations$history$en {
 	@override String get ratedPoor => 'Se dio mal';
 	@override String get outcomeTitle => 'Nota de temporada';
 	@override String outcomeYear({required Object year}) => 'Temporada ${year}';
+	@override String isolationHint({required Object meters}) => 'Esta especie se cruza con sus vecinas — cultívala a unos ${meters} m de otras para que se mantenga fiel';
 }
 
 // Path: sale
@@ -2101,6 +2102,7 @@ extension on TranslationsEs {
 			'history.ratedPoor' => 'Se dio mal',
 			'history.outcomeTitle' => 'Nota de temporada',
 			'history.outcomeYear' => ({required Object year}) => 'Temporada ${year}',
+			'history.isolationHint' => ({required Object meters}) => 'Esta especie se cruza con sus vecinas — cultívala a unos ${meters} m de otras para que se mantenga fiel',
 			'sale.title' => 'Ventas',
 			'sale.help' => 'Registra semilla vendida o comprada — dinero, Ğ1 o cualquier moneda. Un modelo aparte del regalo y del Plantare. Nunca se cobra comisión por las semillas.',
 			'sale.add' => 'Registrar venta',