fix: remove Pro-only placeholder in consumer APK, fix A-1/A-3 visibility

- sake_detail_screen: hide SakeMbtiStampSection when isProVersion=false
  (consumer APK no longer shows Pro版限定 placeholder at card bottom)
- sake_grid_item / sake_list_item: apply Pressable to actual tap targets
  (grid/list cards now animate on press instead of non-interactive LevelTitleCard)
- soul_screen / sommelier_screen: ambient glow alpha 0.07→0.12 for visibility

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

lib/screens/features/sommelier_screen.dart

@@ -105,7 +105,7 @@ class _SommelierScreenState extends ConsumerState<SommelierScreen> {
                       shape: BoxShape.circle,
                       gradient: RadialGradient(
                         colors: [
-                          Theme.of(context).extension<AppColors>()!.brandAccent.withValues(alpha: 0.07),
+                          Theme.of(context).extension<AppColors>()!.brandAccent.withValues(alpha: 0.12),
                           Colors.transparent,
                         ],
                       ),

lib/screens/sake_detail_screen.dart

@@ -18,6 +18,7 @@ import '../widgets/sake_detail/sake_detail_memo.dart';
 import '../widgets/sake_detail/sake_detail_specs.dart';
 import 'sake_detail/widgets/sake_photo_edit_modal.dart';
 import 'sake_detail/sections/sake_mbti_stamp_section.dart';
+import '../main.dart' show isProVersion;
 import 'sake_detail/sections/sake_basic_info_section.dart';
 import 'sake_detail/widgets/sake_detail_sliver_app_bar.dart';
 import '../services/mbti_compatibility_service.dart';
@@ -265,9 +266,11 @@ class _SakeDetailScreenState extends ConsumerState<SakeDetailScreen> {
                     const SizedBox(height: 48),
                   ],
 
-                  // MBTI Diagnostic Stamp Section (Phase C3)
-                  SakeMbtiStampSection(sake: _sake),
-                  const SizedBox(height: 24),
+                  // MBTI Diagnostic Stamp Section (Pro only)
+                  if (isProVersion) ...[
+                    SakeMbtiStampSection(sake: _sake),
+                    const SizedBox(height: 24),
+                  ],
                   ],
               ),
             ),

lib/screens/soul_screen.dart

@@ -48,7 +48,7 @@ class _SoulScreenState extends ConsumerState<SoulScreen> {
                   shape: BoxShape.circle,
                   gradient: RadialGradient(
                     colors: [
-                      appColors.brandPrimary.withValues(alpha: 0.07),
+                      appColors.brandPrimary.withValues(alpha: 0.12),
                       Colors.transparent,
                     ],
                   ),

lib/widgets/home/sake_grid_item.dart

@@ -8,6 +8,7 @@ import '../../theme/app_theme.dart';
 import '../../theme/app_colors.dart';
 import '../../providers/ui_experiment_provider.dart';
 import 'package:lucide_icons/lucide_icons.dart';
+import '../common/pressable.dart';
 
 class SakeGridItem extends ConsumerWidget {
   final SakeItem sake;
@@ -24,7 +25,8 @@ class SakeGridItem extends ConsumerWidget {
     final isSelected = ref.watch(selectedMenuSakeIdsProvider).contains(sake.id);
     final appColors = Theme.of(context).extension<AppColors>()!;
 
-    return Card(
+    return Pressable(
+      child: Card(
       clipBehavior: Clip.antiAlias,
       // Highlight selected
       shape: isMenuMode && isSelected
@@ -198,8 +200,9 @@ class SakeGridItem extends ConsumerWidget {
                  ),
                ),
           ],
-        ),
-      ),
-    );
+        ),   // Stack
+      ),     // InkWell
+    ),       // Card
+    );       // Pressable
   }
 }

lib/widgets/home/sake_list_item.dart

@@ -7,7 +7,7 @@ import '../../screens/sake_detail_screen.dart';
 import '../../theme/app_theme.dart';
 import '../../theme/app_colors.dart';
 import 'package:lucide_icons/lucide_icons.dart';
-// Haptic via InkWell? No, explicit HapticFeedback used generally.
+import '../common/pressable.dart';
 
 class SakeListItem extends ConsumerWidget {
   final SakeItem sake;
@@ -29,9 +29,10 @@ class SakeListItem extends ConsumerWidget {
     // Adaptive selection color
     final selectedColor = appColors.brandAccent.withValues(alpha: 0.15);
 
-    return Card(
+    return Pressable(
+      child: Card(
       clipBehavior: Clip.antiAlias,
-      elevation: 1, // Slight elevation
+      elevation: 1,
       color: isMenuMode && isSelected ? selectedColor : null,
       shape: isMenuMode && isSelected
           ? RoundedRectangleBorder(side: BorderSide(color: appColors.brandAccent, width: 2), borderRadius: BorderRadius.circular(6))
@@ -208,8 +209,9 @@ class SakeListItem extends ConsumerWidget {
               ),
             ),
           ],
-        ),
-      ),
-    );
+        ),   // Row
+      ),     // InkWell
+    ),       // Card
+    );       // Pressable
   }
 }