v3: fixes to database schema and user registration

api/routes/users.ts

@@ -4,9 +4,9 @@ import {
   APIErrorCode,
   APIException,
   isLoginUserRequest,
-  isRegisterUserRequest,
   isUpdateUserRequest,
   type PaginatedData,
+  validateRegisterUserRequest,
 } from "../model/interfaces.ts";
 
 import { createJWT, verifyPassword } from "../lib/jwt.ts";
@@ -36,12 +36,9 @@ const router = new Router({ prefix: "/api/users" });
 router.post("/register", async (ctx) => {
   const body = await ctx.request.body.json();
 
-  if (!isRegisterUserRequest(body)) {
-    throw new APIException(
-      APIErrorCode.VALIDATION_ERROR,
-      400,
-      "Invalid request",
-    );
+  const registerError = validateRegisterUserRequest(body);
+  if (registerError) {
+    throw new APIException(APIErrorCode.VALIDATION_ERROR, 400, registerError);
   }
 
   // Validate invite — throws 404/409 if bad