initial commit

src/db/db_keys.h

@@ -0,0 +1,18 @@
+#pragma once
+
+namespace radiantwave::db {
+
+// Canonical system_kv keys. These are the single source of truth for where
+// device configuration lives in the local database.
+constexpr const char* KV_EMAIL_ADDRESS = "email_address";
+constexpr const char* KV_LICENSE_KEY = "license_key";
+constexpr const char* KV_SUBSCRIPTION_LEVEL_ID = "subscription_level_id";
+constexpr const char* KV_SUBSCRIPTION_LEVEL_NAME = "subscription_level_name";
+constexpr const char* KV_SUBSCRIPTION_LEVEL_DESCRIPTION = "subscription_level_description";
+
+// Unix epoch seconds of the last successful license validation against the
+// portal. Used to grant a 7-day offline grace window so transient network
+// outages do not revoke a known-good license.
+constexpr const char* KV_LICENSE_LAST_VERIFIED = "license_last_verified";
+
+} // namespace radiantwave::db