Fix login loop and add documentation

migrations/default.sql

@@ -0,0 +1,36 @@
+create table libraries
+(
+    owner_id   uuid                    not null
+        constraint libraries_owner_id
+            references users
+            on update cascade on delete cascade,
+    created_at timestamp default now() not null,
+    name       varchar(255)            not null,
+    repo_id    varchar(64)             not null
+        constraint libraries_repo_id
+            references repos
+            on update cascade on delete cascade,
+    id         uuid                    not null
+        constraint libraries_pk
+            primary key
+);
+create table repos
+(
+    id               varchar(64)             not null
+        primary key,
+    created_at       timestamp default now() not null,
+    storage_type     varchar(32)             not null,
+    storage_settings json                    not null,
+    flags            smallint  default 0     not null
+);
+create table users
+(
+    id         uuid                    not null
+        primary key,
+    created_at timestamp default now() not null,
+    name       varchar(255)            not null,
+    password   varchar(128),
+    email      varchar(128)            not null,
+    username   varchar(64)             not null
+);
+