Implement static 6-arrow layout with logical grouping system

- Fix dynamic column generation issue that created 6 columns instead of 3
- Implement static 12-row grid with intelligent visual state management
- Add visual-to-logical mapping system for proper end/arrow indexing
- Fix sum calculations using logical end groupings instead of visual rows
- Replace ends per set selector with automatic ruleset inference
- Convert to percentage-based responsive layout eliminating viewport overflow
- Add clean merged arrow header replacing individual column indices

Core improvements:
- 3-arrow (Indoor): 10 ends, sum-3 active, sum-6 on even ends
- 6-arrow (Outdoor): 6 ends, sum-3 greyed, sum-6 every 2 visual rows
- No more RenderFlex overflow errors with responsive column widths
- Proper bounds checking prevents range errors on inactive rows
- Package identifier updated to com.novoyuuparosk.archery_bookkeeper

🤖 Generated with [Claude Code](https://claude.ai/code)

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

lib/presentation/widgets/common/toggle_switches.dart

@@ -2,17 +2,16 @@ import 'package:flutter/material.dart';
 
 class ToggleSwitches extends StatelessWidget {
   final int arrowsPerEnd;
-  final int endsPerSet;
   final Function(int) onArrowsPerEndChanged;
-  final Function(int) onEndsPerSetChanged;
 
   const ToggleSwitches({
     super.key,
     required this.arrowsPerEnd,
-    required this.endsPerSet,
     required this.onArrowsPerEndChanged,
-    required this.onEndsPerSetChanged,
   });
+  
+  // Inferred ends per set based on ruleset
+  int get endsPerSet => arrowsPerEnd == 3 ? 10 : 6;
 
   @override
   Widget build(BuildContext context) {
@@ -27,12 +26,7 @@ class ToggleSwitches extends StatelessWidget {
               arrowsPerEnd,
               onArrowsPerEndChanged,
             ),
-            _buildToggleGroup(
-              'Ends per set',
-              [10, 12],
-              endsPerSet,
-              onEndsPerSetChanged,
-            ),
+            _buildRulesetInfo(),
           ],
         ),
       ],
@@ -71,4 +65,46 @@ class ToggleSwitches extends StatelessWidget {
       ],
     );
   }
+  
+  Widget _buildRulesetInfo() {
+    final rulesetName = arrowsPerEnd == 3 ? 'Indoor' : 'Outdoor';
+    return Column(
+      children: [
+        Text(
+          'Ruleset',
+          style: const TextStyle(
+            fontSize: 14,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        const SizedBox(height: 8),
+        Container(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 10),
+          decoration: BoxDecoration(
+            color: Colors.blue.shade50,
+            border: Border.all(color: Colors.blue.shade200),
+            borderRadius: BorderRadius.circular(8),
+          ),
+          child: Column(
+            children: [
+              Text(
+                rulesetName,
+                style: TextStyle(
+                  fontWeight: FontWeight.bold,
+                  color: Colors.blue.shade700,
+                ),
+              ),
+              Text(
+                '$endsPerSet ends',
+                style: TextStyle(
+                  fontSize: 12,
+                  color: Colors.blue.shade600,
+                ),
+              ),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
 }