add all files

controls-rework/monitoring/schema.sql

@@ -0,0 +1,24 @@
+-- Devices being monitored for latency
+CREATE TABLE monitoring_devices (
+    id INT UNSIGNED NOT NULL AUTO_INCREMENT,
+    host VARCHAR(255) NOT NULL,
+    label VARCHAR(255) NOT NULL,
+    is_active TINYINT(1) NOT NULL DEFAULT 1,
+    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    PRIMARY KEY (id),
+    UNIQUE KEY uq_monitoring_devices_host (host)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- Individual latency samples captured by the watcher
+CREATE TABLE monitoring_latency_log (
+    id BIGINT UNSIGNED NOT NULL AUTO_INCREMENT,
+    device_id INT UNSIGNED NOT NULL,
+    latency_ms INT UNSIGNED NULL,
+    status ENUM('up','down','unknown') NOT NULL,
+    checked_at DATETIME NOT NULL,
+    PRIMARY KEY (id),
+    KEY idx_monitoring_latency_device_checked (device_id, checked_at),
+    CONSTRAINT fk_monitoring_latency_device
+        FOREIGN KEY (device_id) REFERENCES monitoring_devices(id)
+        ON DELETE CASCADE
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;