init commit

store/migration/sqlite/0.17/00__inbox.sql

@@ -0,0 +1,9 @@
+-- inbox
+CREATE TABLE inbox (
+  id INTEGER PRIMARY KEY AUTOINCREMENT,
+  created_ts BIGINT NOT NULL DEFAULT (strftime('%s', 'now')),
+  sender_id INTEGER NOT NULL,
+  receiver_id INTEGER NOT NULL,
+  status TEXT NOT NULL,
+  message TEXT NOT NULL DEFAULT '{}'
+);