Initial public khodo snapshot

package/migrations/001_foundation.sql

@@ -0,0 +1,18 @@
+CREATE TABLE songs (
+  id TEXT PRIMARY KEY NOT NULL CHECK(length(trim(id)) BETWEEN 1 AND 120),
+  title TEXT NOT NULL CHECK(length(trim(title)) BETWEEN 1 AND 200),
+  composer TEXT NOT NULL DEFAULT '',
+  source_json TEXT NOT NULL CHECK(json_valid(source_json)),
+  created_at_ms INTEGER NOT NULL CHECK(created_at_ms >= 0),
+  updated_at_ms INTEGER NOT NULL CHECK(updated_at_ms >= created_at_ms)
+) STRICT;
+-- vamp-statement
+CREATE TABLE page_state (
+  id INTEGER PRIMARY KEY CHECK(id = 1),
+  song_id TEXT NOT NULL CHECK(length(trim(song_id)) BETWEEN 1 AND 120),
+  page_index INTEGER NOT NULL CHECK(page_index >= 0),
+  next_count INTEGER NOT NULL DEFAULT 0 CHECK(next_count >= 0),
+  previous_count INTEGER NOT NULL DEFAULT 0 CHECK(previous_count >= 0),
+  last_command TEXT NOT NULL DEFAULT '',
+  updated_at_ms INTEGER NOT NULL CHECK(updated_at_ms >= 0)
+) STRICT;