premier app version beta

lib/core/constants/app_constants.dart

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+class AppConstants {
+  AppConstants._();
+
+  // Database
+  static const String databaseName = 'bully_targets.db';
+  static const int databaseVersion = 1;
+
+  // Tables
+  static const String sessionsTable = 'sessions';
+  static const String shotsTable = 'shots';
+
+  // Image processing
+  static const double minImpactRadius = 2.0;
+  static const double maxImpactRadius = 20.0;
+  static const int gaussianBlurSize = 5;
+  static const double houghCirclesDp = 1.0;
+  static const double houghCirclesMinDist = 20.0;
+  static const int houghCirclesParam1 = 50;
+  static const int houghCirclesParam2 = 30;
+
+  // Scoring zones for concentric targets (10 zones, from center)
+  static const List<double> concentricZoneRadii = [
+    0.05, // Zone 10 (bullseye)
+    0.10, // Zone 9
+    0.15, // Zone 8
+    0.20, // Zone 7
+    0.25, // Zone 6
+    0.30, // Zone 5
+    0.40, // Zone 4
+    0.50, // Zone 3
+    0.65, // Zone 2
+    0.80, // Zone 1
+  ];
+
+  // Silhouette scoring zones (as percentage of height from top)
+  static const Map<String, double> silhouetteZones = {
+    'head': 0.15,      // Top 15% = head = 5 points
+    'center': 0.45,    // 15-45% = center mass = 5 points
+    'body': 0.70,      // 45-70% = body = 4 points
+    'lower': 1.0,      // 70-100% = lower = 3 points
+  };
+
+  // UI
+  static const double defaultPadding = 16.0;
+  static const double smallPadding = 8.0;
+  static const double largePadding = 24.0;
+  static const double borderRadius = 12.0;
+}