update db schema

initdb.d/20-user.sql

@@ -1,11 +1,10 @@
 CREATE TABLE "user" (
-    "id"                        UUID NOT NULL PRIMARY KEY DEFAULT uuid_generate_v4(),
+    "id"                        UUID NOT NULL PRIMARY KEY,
     "createdAt"                 TIMESTAMPTZ DEFAULT now(),
     "updatedAt"                 TIMESTAMPTZ DEFAULT now(),
     "identifier"                TEXT UNIQUE NOT NULL,
-    "wk_hash"                   TEXT NOT NULL,
     "level.min"                 INT DEFAULT 1,
-    "level.max"                 INT DEFAULT 3,
+    "level.max"                 INT NOT NULL,
     "level.vocabulary.showing"  TEXT[],
     "quiz.settings"             JSONB
 );
@@ -17,6 +16,7 @@ CREATE TRIGGER "t_user_updatedAt"
 
 CREATE INDEX "idx_user_updatedAt" ON "user" ("updatedAt");
 CREATE INDEX "idx_user_identifier" ON "user" ("identifier");
-CREATE INDEX "idx_user_wk_hash" ON "user" ("wk_hash");
 
-INSERT INTO "user" ("id", "identifier") VALUES (uuid_nil(), '');
+INSERT INTO "user" ("id", "identifier") VALUES
+(uuid_nil(), '', 1),
+('00000000-0000-0000-0000-000000000001', 'wanikani', 1);