feat: Add comprehensive documentation suite and reorganize project structure

- Created complete documentation in docs/ directory
- Added PROJECT_OVERVIEW.md with feature highlights and getting started guide
- Added ARCHITECTURE.md with system design and technical details
- Added SECURITY.md with comprehensive security implementation guide
- Added DEVELOPMENT.md with development workflows and best practices
- Added DEPLOYMENT.md with production deployment instructions
- Added API.md with complete REST API documentation
- Added CONTRIBUTING.md with contribution guidelines
- Added CHANGELOG.md with version history and migration notes
- Reorganized all documentation files into docs/ directory for better organization
- Updated README.md with proper documentation links and quick navigation
- Enhanced project structure with professional documentation standards

f_modules/m_frontend/m_donations/config/config.php

@@ -0,0 +1,109 @@
+<?php
+// Module paths
+define('DONATIONS_PATH', __DIR__ . '/..');
+define('DONATIONS_SRC', DONATIONS_PATH . '/src');
+define('DONATIONS_PUBLIC', DONATIONS_PATH . '/public');
+define('DONATIONS_VIEWS', DONATIONS_PATH . '/views');
+define('DONATIONS_ASSETS', DONATIONS_PATH . '/assets');
+
+// Autoloader
+spl_autoload_register(function ($class) {
+    $file = DONATIONS_SRC . '/' . str_replace('\\', '/', $class) . '.php';
+    if (file_exists($file)) require_once $file;
+});
+
+// Helper functions
+function redirect($url) {
+    header("Location: $url");
+    exit;
+}
+
+function json_response($data, $status = 200) {
+    http_response_code($status);
+    header('Content-Type: application/json');
+    echo json_encode($data);
+    exit;
+}
+
+function view($template, $data = []) {
+    extract($data);
+    require DONATIONS_VIEWS . "/$template.php";
+}
+
+function handle_error($message, $code = 500) {
+    if (request_wants_json()) {
+        json_response(['error' => $message], $code);
+    } else {
+        http_response_code($code);
+        view('error', ['message' => $message]);
+    }
+}
+
+function request_wants_json() {
+    return isset($_SERVER['HTTP_ACCEPT']) && 
+           strpos($_SERVER['HTTP_ACCEPT'], 'application/json') !== false;
+}
+
+function csrf_token() {
+    if (!isset($_SESSION['csrf_token'])) {
+        $_SESSION['csrf_token'] = bin2hex(random_bytes(32));
+    }
+    return $_SESSION['csrf_token'];
+}
+
+function verify_csrf_token($token) {
+    return isset($_SESSION['csrf_token']) && hash_equals($_SESSION['csrf_token'], $token);
+}
+
+function db() {
+    global $class_database;
+    return $class_database;
+}
+
+// Module configuration
+return [
+    'square' => [
+        'application_id' => 'YOUR_SQUARE_APP_ID',
+        'access_token' => 'YOUR_SQUARE_ACCESS_TOKEN',
+        'location_id' => 'YOUR_SQUARE_LOCATION_ID',
+        'environment' => 'sandbox',
+        'currency' => 'USD',
+        'min_donation' => 1.00,
+        'max_donation' => 1000.00,
+        'default_amounts' => [5, 10, 25, 50, 100],
+        'webhook_secret' => 'YOUR_WEBHOOK_SECRET'
+    ],
+    'payout' => [
+        'min_balance' => 50.00,
+        'payout_fee' => 0.05,
+        'payout_fee_fixed' => 1.00
+    ],
+    'api' => [
+        'rate_limit' => 100,
+        'rate_window' => 60,
+        'allowed_ips' => []
+    ],
+    'tables' => [
+        'donations' => 'donations',
+        'donation_goals' => 'donation_goals',
+        'donation_milestones' => 'donation_milestones',
+        'donation_analytics' => 'donation_analytics',
+        'donation_notifications' => 'donation_notifications',
+        'api_keys' => 'api_keys',
+        'api_rate_limits' => 'api_rate_limits'
+    ],
+    'notifications' => [
+        'retention_days' => 30,
+        'batch_size' => 100
+    ],
+    'analytics' => [
+        'default_period' => 30,
+        'cache_duration' => 3600,
+        'min_data_points' => 10
+    ],
+    'security' => [
+        'allowed_origins' => [],
+        'max_request_size' => '10M',
+        'session_timeout' => 3600
+    ]
+];