feat: installer - DB table + defaults

includes/Core/Installer.php

@@ -0,0 +1,54 @@
+<?php
+
+namespace AskTamMCP\Core;
+
+defined('ABSPATH') || exit;
+
+/**
+ * Handles DB table creation on activation, cleanup on deactivation.
+ */
+class Installer {
+
+    public static function activate(): void {
+        self::createTables();
+        self::setDefaults();
+        flush_rewrite_rules();
+    }
+
+    public static function deactivate(): void {
+        flush_rewrite_rules();
+    }
+
+    private static function createTables(): void {
+        global $wpdb;
+        $charset = $wpdb->get_charset_collate();
+
+        $sql = "CREATE TABLE IF NOT EXISTS {$wpdb->prefix}asktam_mcp_keys (
+            id          BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+            name        VARCHAR(120) NOT NULL,
+            api_key     VARCHAR(64)  NOT NULL,
+            scopes      VARCHAR(255) NOT NULL DEFAULT 'read',
+            created_at  DATETIME     NOT NULL DEFAULT CURRENT_TIMESTAMP,
+            last_used   DATETIME     NULL,
+            is_active   TINYINT(1)   NOT NULL DEFAULT 1,
+            PRIMARY KEY (id),
+            UNIQUE KEY api_key (api_key)
+        ) $charset;";
+
+        require_once ABSPATH . 'wp-admin/includes/upgrade.php';
+        dbDelta($sql);
+
+        update_option('asktam_mcp_db_version', ASKTAM_MCP_VERSION);
+    }
+
+    private static function setDefaults(): void {
+        if (!get_option('asktam_mcp_settings')) {
+            update_option('asktam_mcp_settings', [
+                'rate_limit'      => 60,   // requests per minute per key
+                'log_requests'    => true,
+                'allow_raw_sql'   => false,
+                'wc_enabled'      => class_exists('WooCommerce'),
+            ]);
+        }
+    }
+}