HB, OTA etc

db/migrations/V5__firmware_updates.sql

@@ -0,0 +1,24 @@
+create table firmware (
+    id int not null auto_increment,
+    device_id bigint not null,
+    version int not null,
+    path varchar(4096) not null,
+    sha256 char(64),
+    size int,
+    uploaded_at timestamp not null default current_timestamp,
+    primary key (id),
+    foreign key (device_id) references devices(id),
+
+    unique(device_id, version)
+);
+
+create table firmware_updates (
+    id int not null auto_increment,
+    firmware_id int not null,
+    status varchar(32) not null, -- pending / sent / applied / failed
+    requested_at timestamp not null default current_timestamp,
+    applied_at timestamp null,
+
+    primary key (id),
+    foreign key (firmware_id) references firmware(id)
+);