Add support for message history pagination, preserve scroll in rendering, and improve draft/message workflows.

src/routes/auth.js

@@ -5,6 +5,7 @@ import express from "express";
 import {asyncHandler} from "../middleware/asyncHandler.js";
 import bcrypt from "bcrypt";
 import {validateBody} from "../middleware/validate.js";
+import {newPasswordError} from "../services/passwordPolicy.js";
 
 const credentialsValidator = (body) => {
     const username = String(body?.username || "").trim();
@@ -22,6 +23,8 @@ export function createAuthRouter({repositories, authRateLimiters, config}) {
 
     router.post("/register", ...authRateLimiters, validateBody(credentialsValidator), asyncHandler(async (req, res) => {
         const {username, password, inviteCode} = req.validatedBody;
+        const passwordError = newPasswordError(password);
+        if (passwordError) return res.status(400).json({error: passwordError, code: "PASSWORD_TOO_LONG"});
         if (config.registrationInviteCode && inviteCode !== config.registrationInviteCode) {
             return res.status(403).json({error: "Valid invite code is required"});
         }