adding file upload & tags

backend/config/database.php

@@ -58,6 +58,22 @@ function migrate($db) {
         setting_key VARCHAR(100) PRIMARY KEY,
         setting_value TEXT NOT NULL
     )");
+    try { $db->exec("CREATE TABLE IF NOT EXISTS file_attachments (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        event_id INT NOT NULL,
+        original_name VARCHAR(255) NOT NULL,
+        stored_name VARCHAR(255) NOT NULL,
+        mime_type VARCHAR(100),
+        file_size INT,
+        uploaded_by VARCHAR(100),
+        created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+    )"); } catch (Exception $e) {}
+    try { $db->exec("CREATE TABLE IF NOT EXISTS event_tags (
+        id INT AUTO_INCREMENT PRIMARY KEY,
+        event_id INT NOT NULL,
+        tag VARCHAR(50) NOT NULL,
+        UNIQUE KEY unique_event_tag (event_id, tag)
+    )"); } catch (Exception $e) {}
     try {
         $stmt = $db->prepare("SELECT COUNT(*) as c FROM neptune_settings WHERE setting_key = 'registration_enabled'");
         $stmt->execute();