네트워크 이력 DB 저장 전환

config/config.php

@@ -589,6 +589,31 @@ function bootstrap_db(): void
         COLLATE=utf8mb4_unicode_ci
     ");
 
+    $pdo->exec("
+        CREATE TABLE IF NOT EXISTS network_usage_logs (
+            id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
+            recorded_at DATETIME(3) NOT NULL DEFAULT CURRENT_TIMESTAMP(3),
+            iface VARCHAR(32) NOT NULL,
+
+            rx_bytes BIGINT UNSIGNED NOT NULL,
+            tx_bytes BIGINT UNSIGNED NOT NULL,
+            rx_packets BIGINT UNSIGNED NOT NULL,
+            tx_packets BIGINT UNSIGNED NOT NULL,
+
+            rx_mbps DECIMAL(12,4) NULL,
+            tx_mbps DECIMAL(12,4) NULL,
+            rx_pps DECIMAL(12,2) NULL,
+            tx_pps DECIMAL(12,2) NULL,
+
+            create_ip VARCHAR(64) NULL,
+
+            INDEX idx_recorded_at (recorded_at),
+            INDEX idx_iface_recorded_at (iface, recorded_at)
+        ) ENGINE=InnoDB
+        DEFAULT CHARSET=utf8mb4
+        COLLATE=utf8mb4_unicode_ci
+    ");
+
     $pdo->exec("
         CREATE TABLE IF NOT EXISTS remember_tokens (
             id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,