Control WiFi 관측값 유지와 스크롤 보존

config/config.php

@@ -157,6 +157,7 @@ function setting_definitions(): array
         'wifi.scan_cache_seconds' => ['group' => 'wifi', 'label' => '주변 WiFi 스캔 캐시', 'type' => 'number', 'default' => 60, 'min' => 10, 'max' => 600, 'step' => 5, 'unit' => '초'],
         'wifi.scan_timeout_seconds' => ['group' => 'wifi', 'label' => '주변 WiFi 스캔 timeout', 'type' => 'number', 'default' => 8, 'min' => 3, 'max' => 30, 'step' => 1, 'unit' => '초'],
         'wifi.scan_max_networks' => ['group' => 'wifi', 'label' => '주변 WiFi 표시 개수', 'type' => 'number', 'default' => 80, 'min' => 10, 'max' => 300, 'step' => 10, 'unit' => '개'],
+        'wifi.scan_observed_hours' => ['group' => 'wifi', 'label' => '주변 WiFi 관측 보관', 'type' => 'number', 'default' => 72, 'min' => 1, 'max' => 720, 'step' => 1, 'unit' => '시간'],
         'wifi.scan_include_raw' => ['group' => 'wifi', 'label' => '주변 WiFi 원문 일부 표시', 'type' => 'boolean', 'default' => 0],
 
         'fan.auto_min_temp' => ['group' => 'fan', 'label' => '팬 시작 온도', 'type' => 'number', 'default' => 50, 'min' => 30, 'max' => 90, 'step' => 0.5, 'unit' => 'C'],
@@ -530,6 +531,35 @@ function bootstrap_db(): void
         COLLATE=utf8mb4_unicode_ci
     ");
 
+    $pdo->exec("
+        CREATE TABLE IF NOT EXISTS wifi_scan_observations (
+            bssid VARCHAR(17) NOT NULL PRIMARY KEY,
+            iface VARCHAR(32) NOT NULL,
+            band VARCHAR(16) NOT NULL,
+            ssid VARCHAR(255) NULL,
+            freq INT NULL,
+            channel INT NULL,
+            signal_dbm DECIMAL(6,2) NULL,
+            signal_text VARCHAR(32) NULL,
+            security_text VARCHAR(255) NULL,
+            capability_text VARCHAR(255) NULL,
+            rates_text VARCHAR(255) NULL,
+            channel_width VARCHAR(64) NULL,
+            ht TINYINT(1) NOT NULL DEFAULT 0,
+            vht TINYINT(1) NOT NULL DEFAULT 0,
+            he TINYINT(1) NOT NULL DEFAULT 0,
+            first_seen_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+            last_seen_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+            updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+                ON UPDATE CURRENT_TIMESTAMP,
+            INDEX idx_last_seen_at (last_seen_at),
+            INDEX idx_band (band),
+            INDEX idx_iface (iface)
+        ) 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,