Initial commit: Flutter app + PHP/MySQL backend on Hostinger

Replaces Firebase with a self-hosted PHP/MySQL API served from
winded.prymsolutions.com. Includes full backend (schema, auth, events,
teams, brackets, suggestions, stats, media, file upload) and updated
Flutter repositories and domain models.

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

lib/core/api/api_client.g.dart

@@ -0,0 +1,25 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+// ignore_for_file: type=lint
+// ignore_for_file: subtype_of_sealed_class, invalid_use_of_internal_member, invalid_use_of_visible_for_testing_member, deprecated_member_use_from_same_package, deprecated_member_use
+
+part of 'api_client.dart';
+
+// **************************************************************************
+// RiverpodGenerator
+// **************************************************************************
+
+String _$apiClientHash() => r'api_client_hash_placeholder';
+
+/// See also [apiClient].
+@ProviderFor(apiClient)
+final apiClientProvider = Provider<ApiClient>.internal(
+  apiClient,
+  name: r'apiClientProvider',
+  debugGetCreateSourceHash:
+      const bool.fromEnvironment('dart.vm.product') ? null : _$apiClientHash,
+  dependencies: null,
+  allTransitiveDependencies: null,
+);
+
+typedef ApiClientRef = ProviderRef<ApiClient>;