checkpoint ISAC registries and system monitoring

database/schema.sql

@@ -345,7 +345,7 @@ CREATE TABLE IF NOT EXISTS stat_attributes (
 	CHECK((skill_chip_min IS NULL AND skill_chip_max IS NULL) OR (skill_chip_min IS NOT NULL AND skill_chip_max IS NOT NULL AND skill_chip_min <= skill_chip_max)),
 	CHECK(cap_value IS NULL OR cap_value >= 0)
 );
-CREATE UNIQUE INDEX IF NOT EXISTS stat_attributes_name_nocase_idx ON stat_attributes(name COLLATE NOCASE);
+CREATE UNIQUE INDEX IF NOT EXISTS stat_attributes_name_unit_nocase_idx ON stat_attributes(name COLLATE NOCASE, unit);
 CREATE TABLE IF NOT EXISTS talents (
 	id TEXT PRIMARY KEY,
 	name TEXT NOT NULL,
@@ -1092,3 +1092,34 @@ CREATE INDEX IF NOT EXISTS managed_images_category_idx ON managed_images(categor
 CREATE UNIQUE INDEX IF NOT EXISTS managed_images_source_entity_idx
 	ON managed_images(source_entity_type,source_entity_id)
 	WHERE source_entity_type IS NOT NULL AND source_entity_id IS NOT NULL;
+CREATE TABLE IF NOT EXISTS external_service_status (
+	provider TEXT PRIMARY KEY,
+	credits_total REAL,
+	credits_subscription REAL,
+	credits_payg REAL,
+	credits_enterprise REAL,
+	free_calls INTEGER,
+	checked_at TEXT,
+	next_check_at TEXT,
+	last_charge REAL,
+	last_charge_at TEXT,
+	error_message TEXT,
+	severity TEXT NOT NULL DEFAULT 'unknown' CHECK(severity IN ('unknown','ok','warning','critical')),
+	episode_id TEXT,
+	episode_started_at TEXT,
+	recovered_at TEXT,
+	updated_at TEXT NOT NULL
+);
+CREATE TABLE IF NOT EXISTS external_service_alert_deliveries (
+	id TEXT PRIMARY KEY,
+	provider TEXT NOT NULL REFERENCES external_service_status(provider),
+	episode_id TEXT NOT NULL,
+	severity TEXT NOT NULL CHECK(severity IN ('warning','critical')),
+	user_id TEXT NOT NULL REFERENCES users(id),
+	notification_id TEXT REFERENCES notifications(id),
+	created_at TEXT NOT NULL,
+	delivered_at TEXT,
+	UNIQUE(provider,episode_id,severity,user_id)
+);
+CREATE INDEX IF NOT EXISTS external_service_alert_pending_idx
+	ON external_service_alert_deliveries(delivered_at,created_at);