Initial import

etc/db/work-db/sql/notification-messages.sql

@@ -0,0 +1,16 @@
+create table if not exists notification_messages (
+  id serial primary key,
+  title varchar(200) not null,
+  body text not null,
+  category varchar(60) not null default 'general',
+  source varchar(80) not null default 'system',
+  priority varchar(20) not null default 'normal',
+  is_read boolean not null default false,
+  read_at timestamptz null,
+  metadata_json jsonb not null default '{}'::jsonb,
+  created_at timestamptz not null default now(),
+  updated_at timestamptz not null default now()
+);
+
+create index if not exists idx_notification_messages_unread_created_at
+  on notification_messages (is_read, created_at desc, id desc);