fix(ui): scroll the germination & condition-check sheets; extend overflow guard

Two save-button sheets wrapped their body in a bare Column (no scroll): the
germination sheet (which grows a list of past tests) and the condition-check
sheet. On a small phone — especially with the keyboard up — the Save button
was pushed off the bottom, unreachable. Both now wrap the body in a
SingleChildScrollView, like the other input sheets already do.

Also extends the small-phone overflow guard to the profile (identity card +
Save), about, intro carousel, and the market/chat screens in their offline
'set up sharing' state. 17 cases green at 320x568 across es/pt/ast.

apps/app_seeds/lib/ui/variety_detail_screen.dart

@@ -448,14 +448,15 @@ Future<void> _showGerminationSheet(
         top: 16,
         bottom: MediaQuery.of(sheetContext).viewInsets.bottom + 16,
       ),
-      child: Column(
+      child: SingleChildScrollView(
-        mainAxisSize: MainAxisSize.min,
+        child: Column(
-        crossAxisAlignment: CrossAxisAlignment.stretch,
+          mainAxisSize: MainAxisSize.min,
-        children: [
+          crossAxisAlignment: CrossAxisAlignment.stretch,
-          Text(
+          children: [
-            t.germination.title,
+            Text(
-            style: Theme.of(sheetContext).textTheme.titleLarge,
+              t.germination.title,
-          ),
+              style: Theme.of(sheetContext).textTheme.titleLarge,
+            ),
           const SizedBox(height: 8),
           if (lot.germinationTests.isEmpty)
             Text(t.germination.none)
@@ -530,6 +531,7 @@ Future<void> _showGerminationSheet(
           ),
         ],
       ),
+      ),
     ),
   );
 }
@@ -1175,14 +1177,15 @@ Future<void> _showConditionSheet(
           top: 16,
           bottom: MediaQuery.of(sheetContext).viewInsets.bottom + 16,
         ),
-        child: Column(
+        child: SingleChildScrollView(
-          mainAxisSize: MainAxisSize.min,
+          child: Column(
-          crossAxisAlignment: CrossAxisAlignment.stretch,
+            mainAxisSize: MainAxisSize.min,
-          children: [
+            crossAxisAlignment: CrossAxisAlignment.stretch,
-            Text(
+            children: [
-              t.conditionCheck.title,
+              Text(
-              style: Theme.of(sheetContext).textTheme.titleLarge,
+                t.conditionCheck.title,
-            ),
+                style: Theme.of(sheetContext).textTheme.titleLarge,
+              ),
             const SizedBox(height: 12),
             TextField(
               key: const Key('conditionCheck.containers'),
@@ -1239,6 +1242,7 @@ Future<void> _showConditionSheet(
             ),
           ],
         ),
+        ),
       ),
     ),
   );

apps/app_seeds/test/ui/small_screen_overflow_test.dart

@@ -10,9 +10,11 @@ import 'package:tane/services/social_connection.dart';
 import 'package:tane/services/social_service.dart';
 import 'package:tane/services/social_settings.dart';
 import 'package:tane/ui/about_screen.dart';
+import 'package:tane/ui/chat_screen.dart';
 import 'package:tane/ui/home_screen.dart';
 import 'package:tane/ui/intro_screen.dart';
 import 'package:tane/ui/inventory_list_screen.dart';
+import 'package:tane/ui/market_screen.dart';
 import 'package:tane/ui/profile_screen.dart';
 import 'package:tane/ui/settings_screen.dart';
 
@@ -139,6 +141,61 @@ void main() {
     await disposeTree(tester);
   });
 
+  // The market/chat are "live" screens; checked here in their OFFLINE state
+  // (the shared connection can't reach a relay) — a static layout, and the one
+  // a user without signal actually sees.
+  Future<SocialConnection> offlineConn() async {
+    final social = await SocialService.fromRootSeedHex('00' * 32);
+    final settings = SocialSettings(InMemorySecretStore());
+    await settings.setRelayUrls(const []);
+    return SocialConnection(
+      social: social,
+      settings: settings,
+      open: (_) async => throw StateError('offline'),
+      online: const Stream.empty(),
+    );
+  }
+
+  testWidgets('market (offline "set up sharing") fits a small screen',
+      (tester) async {
+    final db = newTestDatabase();
+    addTearDown(db.close);
+    final connection = await offlineConn();
+    await pumpSmall(
+      tester,
+      wrapScreen(
+        repository: newTestRepository(db),
+        locale: AppLocale.es,
+        child: MarketScreen(
+          social: await SocialService.fromRootSeedHex('00' * 32),
+          settings: SocialSettings(InMemorySecretStore()),
+          connection: connection,
+        ),
+      ),
+    );
+    await disposeTree(tester);
+  });
+
+  testWidgets('chat (offline "set up sharing") fits a small screen',
+      (tester) async {
+    final db = newTestDatabase();
+    addTearDown(db.close);
+    final connection = await offlineConn();
+    await pumpSmall(
+      tester,
+      wrapScreen(
+        repository: newTestRepository(db),
+        locale: AppLocale.es,
+        child: ChatScreen(
+          social: await SocialService.fromRootSeedHex('00' * 32),
+          connection: connection,
+          peerPubkey: 'ab' * 32,
+        ),
+      ),
+    );
+    await disposeTree(tester);
+  });
+
   testWidgets('inventory (empty) fits a small screen', (tester) async {
     final db = newTestDatabase();
     addTearDown(db.close);