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>

server/api/suggestions/detail.php

@@ -0,0 +1,26 @@
+<?php
+require_once __DIR__ . '/../config/helpers.php';
+cors();
+
+$id     = $_GET['id'] ?? '';
+$method = $_SERVER['REQUEST_METHOD'];
+$db     = db();
+
+if ($id === '') json_err('Missing id');
+
+if ($method === 'PUT') {
+    require_admin();
+    $b      = body();
+    $status = $b['status'] ?? '';
+    if (!in_array($status, ['pending','reviewed','implemented'])) json_err('Invalid status');
+    $db->prepare('UPDATE suggestions SET status = ? WHERE id = ?')->execute([$status, $id]);
+    json_ok(['updated' => true]);
+}
+
+if ($method === 'DELETE') {
+    require_admin();
+    $db->prepare('DELETE FROM suggestions WHERE id = ?')->execute([$id]);
+    json_ok(['deleted' => true]);
+}
+
+json_err('Method not allowed', 405);