diff --git a/web/src/App.tsx b/web/src/App.tsx
index 891af9c6..f883410d 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -5,7 +5,6 @@ import { AppShell } from '@/app/AppShell';
 import { RequireAuth } from '@/app/RequireAuth';
 import { EnterpriseRegisterPage } from '@/features/auth/EnterpriseRegisterPage';
 import { LoginPage } from '@/features/auth/LoginPage';
-import { RegisterPage } from '@/features/auth/RegisterPage';
 import { ResetPasswordPage } from '@/features/auth/ResetPasswordPage';
 import { TenantEntryPage } from '@/features/auth/TenantEntryPage';
 import { TenantFeedbackPage } from '@/features/auth/TenantFeedbackPage';
@@ -34,7 +33,6 @@ const queryClient = new QueryClient();
 const router = createBrowserRouter([
   { path: 'tenant', element: <TenantEntryPage /> },
   { path: 'login', element: <LoginPage /> },
-  { path: 'register', element: <RegisterPage /> },
   { path: 'reset-password', element: <ResetPasswordPage /> },
   { path: 'enterprise-register', element: <EnterpriseRegisterPage /> },
   { path: 'feedback', element: <TenantFeedbackPage /> },
diff --git a/web/src/app/RequireAuth.tsx b/web/src/app/RequireAuth.tsx
index dc2b10f9..29da0a8a 100644
--- a/web/src/app/RequireAuth.tsx
+++ b/web/src/app/RequireAuth.tsx
@@ -70,11 +70,11 @@ export function RequireAuth() {
   }, [tenant, myUserId, hasToken, setMyUserId, clearTenant]);
 
   // Single place that ensures the `me` topic gets subscribed once `myUserId` is known, regardless
-  // of HOW it became known (session restore above, or a fresh login/register that already called
-  // setMyUserId before this component ever mounted) -- LoginPage/RegisterPage used to each fire
-  // their own subscribeMeTopic() with a swallowed .catch(() => {}), silently leaving a freshly
-  // logged-in user with an empty conversation list and no error on a transient failure. Centralizing
-  // here means it happens exactly once per authenticated mount and surfaces the same Toast either way.
+  // of HOW it became known (session restore above, or a fresh login that already called
+  // setMyUserId before this component ever mounted) -- LoginPage used to fire its own
+  // subscribeMeTopic() with a swallowed .catch(() => {}), silently leaving a freshly logged-in user
+  // with an empty conversation list and no error on a transient failure. Centralizing here means it
+  // happens exactly once per authenticated mount and surfaces the same Toast either way.
   useEffect(() => {
     if (!myUserId || meSubscribedRef.current) return;
     meSubscribedRef.current = true;
diff --git a/web/src/features/auth/LoginPage.tsx b/web/src/features/auth/LoginPage.tsx
index c4eb32fa..e3333f8d 100644
--- a/web/src/features/auth/LoginPage.tsx
+++ b/web/src/features/auth/LoginPage.tsx
@@ -3,7 +3,6 @@ import { useEffect, useState } from 'react';
 import { Link, Navigate, useNavigate } from 'react-router-dom';
 
 import { Icon } from '@/app/Icon';
-import { Agreement } from '@/features/auth/components/Agreement';
 import { PasswordInput } from '@/features/auth/components/PasswordInput';
 import { BASE_APP_NAME } from '@/lib/config';
 import { getTinode, loginBasic } from '@/lib/tinode/connection';
@@ -16,7 +15,6 @@ export function LoginPage() {
   const setMyUserId = useSessionStore((s) => s.setMyUserId);
   const [login, setLogin] = useState('');
   const [password, setPassword] = useState('');
-  const [agreed, setAgreed] = useState(false);
   const [error, setError] = useState('');
   const [submitting, setSubmitting] = useState(false);
 
@@ -37,7 +35,7 @@ export function LoginPage() {
 
   const submit = async (e: React.FormEvent) => {
     e.preventDefault();
-    if (!login.trim() || !password || !agreed || submitting) return;
+    if (!login.trim() || !password || submitting) return;
     setSubmitting(true);
     setError('');
     try {
@@ -116,18 +114,11 @@ export function LoginPage() {
             </Link>
             <button
               type="submit"
-              disabled={!login.trim() || !password || !agreed || submitting}
+              disabled={!login.trim() || !password || submitting}
               className="h-[50px] rounded-lg bg-btn text-base font-medium text-white shadow-btn disabled:bg-btn-disabled disabled:shadow-none"
             >
               {submitting ? '登录中…' : '登录'}
             </button>
-            <p className="m-0 text-center text-sm text-text-tertiary-1">
-              没有账户？{' '}
-              <Link to="/register" className="text-accent no-underline">
-                马上注册
-              </Link>
-            </p>
-            <Agreement checked={agreed} onChange={setAgreed} />
           </form>
         </div>
       </div>
diff --git a/web/src/features/auth/RegisterPage.tsx b/web/src/features/auth/RegisterPage.tsx
deleted file mode 100644
index 078e5f13..00000000
--- a/web/src/features/auth/RegisterPage.tsx
+++ /dev/null
@@ -1,243 +0,0 @@
-import { useEffect, useState } from 'react';
-
-import { Link, Navigate, useNavigate } from 'react-router-dom';
-
-import { Icon } from '@/app/Icon';
-import { Agreement } from '@/features/auth/components/Agreement';
-import { PasswordInput } from '@/features/auth/components/PasswordInput';
-import { VerificationCodeButton } from '@/features/auth/components/VerificationCodeButton';
-import { verifyRegisterCode } from '@/lib/api/auth';
-import { ImApiError } from '@/lib/api/client';
-import { getTinode, registerAccount } from '@/lib/tinode/connection';
-import { registerErrorMessage, validateCredentialsMessage } from '@/lib/tinode/errors';
-import { useSessionStore } from '@/stores/session';
-
-const USERNAME_RE = /^[a-z0-9]{1,10}$/;
-const PHONE_RE = /^\d{11}$/;
-const INVITE_RE = /^[A-Za-z]{5}$/;
-
-/** Pasting a number copied as "+86138..."/"86138..." (very common from a contacts app) strips to a
- *  13-digit all-digit string; naively taking the first 11 keeps "86"+9 real digits and silently
- *  drops the real last 2. Strip a leading 86 first when the digits-only string is longer than 11. */
-function normalizePhoneInput(raw: string): string {
-  const digits = raw.replace(/\D/g, '');
-  const withoutCountryCode = digits.length > 11 && digits.startsWith('86') ? digits.slice(2) : digits;
-  return withoutCountryCode.slice(0, 11);
-}
-
-interface FormErrors {
-  username?: string;
-  phone?: string;
-  code?: string;
-  password?: string;
-  invite?: string;
-}
-
-export function RegisterPage() {
-  const navigate = useNavigate();
-  const tenant = useSessionStore((s) => s.tenant);
-  const setMyUserId = useSessionStore((s) => s.setMyUserId);
-
-  const [username, setUsername] = useState('');
-  const [phone, setPhone] = useState('');
-  const [code, setCode] = useState('');
-  const [password, setPassword] = useState('');
-  const [invite, setInvite] = useState('');
-  const [challengeId, setChallengeId] = useState('');
-  const [agreed, setAgreed] = useState(false);
-  const [errors, setErrors] = useState<FormErrors>({});
-  const [formError, setFormError] = useState('');
-  const [submitting, setSubmitting] = useState(false);
-
-  // A challengeId/code pair is only valid for the phone number it was issued for -- without this,
-  // editing the phone after requesting a code (typo fix) leaves a stale challengeId in place that
-  // verifyRegisterCode() has no way to cross-check against the NEW phone in the field.
-  useEffect(() => {
-    setChallengeId('');
-    setCode('');
-  }, [phone]);
-
-  if (!tenant) return <Navigate to="/tenant" replace />;
-
-  const usingPhone = !!phone;
-  // `tenants/resolve`'s own real per-tenant password_policy (docs/IM-前后端对接文档.md:534) -- read
-  // off the tenant instead of a hardcoded guess, so this can never drift from ResetPasswordPage's
-  // own minimum (they'd silently diverged to two different hardcoded numbers before this existed).
-  const minPasswordLength = tenant.passwordPolicy?.minLength ?? 8;
-
-  const submit = async (e: React.FormEvent) => {
-    e.preventDefault();
-    const next: FormErrors = {};
-    if (!username && !phone) next.username = '用户名和手机号至少填写一项';
-    if (username && !USERNAME_RE.test(username)) next.username = '用户名仅支持 1-10 位小写字母或数字';
-    if (usingPhone) {
-      if (!PHONE_RE.test(phone)) next.phone = '请输入 11 位手机号';
-      if (!challengeId) next.code = '请先获取验证码';
-      else if (!/^\d{6}$/.test(code)) next.code = '请输入 6 位验证码';
-    } else if (!INVITE_RE.test(invite)) {
-      next.invite = '用户名注册需填写 5 位字母邀请码';
-    }
-    if (password.length < minPasswordLength) next.password = `密码至少 ${minPasswordLength} 位`;
-    setErrors(next);
-    setFormError('');
-    if (Object.keys(next).length || !agreed || submitting) return;
-
-    setSubmitting(true);
-    let verificationToken: string | undefined;
-    try {
-      if (usingPhone) {
-        const verified = await verifyRegisterCode(challengeId, code);
-        verificationToken = verified.verification_token;
-      }
-    } catch (err) {
-      setErrors((e) => ({ ...e, code: err instanceof ImApiError ? err.message : '验证码错误或已过期' }));
-      setSubmitting(false);
-      return;
-    }
-    try {
-      const ctrl = await registerAccount({
-        username,
-        phone,
-        password,
-        inviteCode: invite,
-        verificationToken,
-        challengeId: usingPhone ? challengeId : undefined,
-      });
-      if (ctrl.code >= 300 && ctrl.text === 'validate credentials') {
-        setFormError(validateCredentialsMessage(ctrl.params as { reason?: string; cred?: string[] } | undefined));
-        return;
-      }
-      const authToken = getTinode().getAuthToken();
-      sessionStorage.setItem('im-session-token', authToken ? authToken.token : '');
-      setMyUserId((ctrl.params?.user as string | undefined) ?? null);
-      navigate('/messages');
-    } catch (err) {
-      setFormError(registerErrorMessage(err));
-    } finally {
-      setSubmitting(false);
-    }
-  };
-
-  return (
-    <div className="flex h-dvh w-full flex-col overflow-y-auto bg-surface-page">
-      <div className="flex h-12 flex-none items-center px-2 min-[900px]:hidden">
-        <Link to="/login" className="grid h-9 w-9 place-items-center text-text-heading no-underline">
-          <Icon name="arrow_back_ios_new" className="text-[20px]" />
-        </Link>
-        <strong className="flex-1 -ml-9 text-center text-[17px] font-semibold text-text-heading">注册</strong>
-      </div>
-      <div className="flex flex-1 items-center justify-center px-6 py-8">
-        <form onSubmit={submit} className="flex w-full max-w-[380px] flex-col gap-4">
-          <h1 className="m-0 text-[22px] font-bold text-text-title">创建账号</h1>
-          {formError ? (
-            <div className="flex items-center gap-1.5 rounded-lg bg-error-strip-bg px-3 py-2.5 text-sm text-error-strip-text">
-              <Icon name="error_outline" className="text-[18px]" />
-              {formError}
-            </div>
-          ) : null}
-
-          <div className="flex flex-col gap-1.5">
-            <input
-              value={username}
-              onChange={(e) => setUsername(e.target.value.toLowerCase().replace(/[^a-z0-9]/g, '').slice(0, 10))}
-              placeholder="用户名（1-10位小写字母或数字）"
-              autoComplete="username"
-              className={`h-[50px] rounded-lg bg-surface-input px-3.5 text-[15px] outline-none focus:border focus:border-focus-border focus:shadow-focus-ring ${
-                errors.username ? 'border border-danger-text' : ''
-              }`}
-            />
-            {errors.username ? <div className="text-xs text-danger-border">{errors.username}</div> : null}
-          </div>
-
-          <div className="flex items-center gap-3 text-xs text-text-tertiary-3">
-            <div className="h-px flex-1 bg-border-row" />
-            或
-            <div className="h-px flex-1 bg-border-row" />
-          </div>
-
-          <div className="flex flex-col gap-1.5">
-            <label
-              className={`flex h-[50px] items-center gap-2 rounded-lg bg-surface-input px-3.5 has-focus:border has-focus:shadow-focus-ring ${
-                errors.phone ? 'border border-danger-text' : 'has-focus:border-focus-border'
-              }`}
-            >
-              <span className="text-[15px] text-text-tertiary-2">+86</span>
-              <input
-                value={phone}
-                onChange={(e) => setPhone(normalizePhoneInput(e.target.value))}
-                placeholder="请输入手机号"
-                type="tel"
-                inputMode="numeric"
-                autoComplete="tel"
-                className="w-full bg-transparent text-[15px] outline-none"
-              />
-            </label>
-            {errors.phone ? <div className="text-xs text-danger-border">{errors.phone}</div> : null}
-          </div>
-
-          <div className="flex flex-col gap-1.5">
-            <div className="flex items-center gap-2">
-              <input
-                value={code}
-                onChange={(e) => setCode(e.target.value.replace(/\D/g, '').slice(0, 6))}
-                placeholder="短信验证码"
-                inputMode="numeric"
-                autoComplete="one-time-code"
-                className={`h-[50px] flex-1 rounded-lg bg-surface-input px-3.5 text-[15px] outline-none ${
-                  errors.code ? 'border border-danger-text' : ''
-                }`}
-              />
-              <VerificationCodeButton
-                phone={phone}
-                scene="register"
-                onChallenge={setChallengeId}
-                onError={(msg) => setErrors((e) => ({ ...e, code: msg }))}
-              />
-            </div>
-            {errors.code ? <div className="text-xs text-danger-border">{errors.code}</div> : null}
-          </div>
-
-          <PasswordInput
-            value={password}
-            onChange={setPassword}
-            placeholder="设置密码"
-            autoComplete="new-password"
-            error={errors.password}
-            maxLength={tenant.passwordPolicy?.maxLength}
-          />
-
-          <div className="flex flex-col gap-1.5">
-            {/* 邀请码大小写敏感（唯一索引按 ascii_bin 排序），不能像其它字段那样统一大小写 */}
-            <input
-              value={invite}
-              onChange={(e) => setInvite(e.target.value.replace(/[^A-Za-z]/g, '').slice(0, 5))}
-              placeholder="邀请码（5位英文字母，区分大小写）"
-              autoCapitalize="off"
-              autoCorrect="off"
-              className={`h-[50px] rounded-lg bg-surface-input px-3.5 text-[15px] outline-none ${
-                errors.invite ? 'border border-danger-text' : ''
-              }`}
-            />
-            {errors.invite ? <div className="text-xs text-danger-border">{errors.invite}</div> : null}
-          </div>
-
-          {!usingPhone ? (
-            <p className="m-0 text-xs text-text-tertiary-3">未绑定手机号无法自助找回密码，忘记密码后只能联系企业管理员重置</p>
-          ) : null}
-
-          <button
-            type="submit"
-            disabled={(!username && !phone) || !password || !agreed || submitting}
-            className="h-[50px] rounded-lg bg-btn text-base font-medium text-white shadow-btn disabled:bg-btn-disabled disabled:shadow-none"
-          >
-            {submitting ? '注册中…' : '注册'}
-          </button>
-          <Link to="/login" className="text-center text-sm text-accent no-underline">
-            已有账号？返回登录
-          </Link>
-          <Agreement checked={agreed} onChange={setAgreed} prefix="注册即认同MeetingIM" />
-        </form>
-      </div>
-    </div>
-  );
-}
diff --git a/web/src/features/auth/ResetPasswordPage.tsx b/web/src/features/auth/ResetPasswordPage.tsx
index 370db8e0..9692d553 100644
--- a/web/src/features/auth/ResetPasswordPage.tsx
+++ b/web/src/features/auth/ResetPasswordPage.tsx
@@ -47,9 +47,9 @@ export function ResetPasswordPage() {
   }, [phone]);
 
   if (!tenant) return <Navigate to="/tenant" replace />;
-  // Same real per-tenant policy RegisterPage reads (docs/IM-前后端对接文档.md:534) -- was hardcoded
-  // to 8 here, matching Register's OWN hardcode by coincidence, not because either ever read the
-  // real value; SecuritySettingsPage's in-place change had drifted to a DIFFERENT hardcoded 6.
+  // Real per-tenant policy (docs/IM-前后端对接文档.md:534) -- was hardcoded to 8 here, not because
+  // anything ever read the real value; SecuritySettingsPage's in-place change had drifted to a
+  // DIFFERENT hardcoded 6.
   const minPasswordLength = tenant.passwordPolicy?.minLength ?? 8;
 
   const submit = async (e: React.FormEvent) => {
@@ -86,7 +86,7 @@ export function ResetPasswordPage() {
   return (
     <div className="flex h-dvh w-full flex-col overflow-y-auto bg-surface-page">
       {/* README §10.7: mobile gets its own 48px icon+centered-title bar, not the desktop text link
-          scaled down -- same pattern as RegisterPage's own min-[900px]:hidden header. */}
+          scaled down. */}
       <div className="flex h-12 flex-none items-center px-2 min-[900px]:hidden">
         <Link to="/login" className="grid h-9 w-9 place-items-center text-text-heading no-underline">
           <Icon name="arrow_back_ios_new" className="text-[20px]" />
diff --git a/web/src/features/auth/components/Agreement.tsx b/web/src/features/auth/components/Agreement.tsx
deleted file mode 100644
index 0b69765c..00000000
--- a/web/src/features/auth/components/Agreement.tsx
+++ /dev/null
@@ -1,39 +0,0 @@
-import { Icon } from '@/app/Icon';
-import { BASE_APP_NAME } from '@/lib/config';
-
-interface AgreementProps {
-  checked: boolean;
-  onChange: (checked: boolean) => void;
-  prefix?: string;
-}
-
-/** README/`01-account.dc.html`'s exact 16x16 `border-radius:4px` box with a custom check glyph --
- *  `accent-color` alone only tints the native widget's fill and leaves its unchecked border/size/
- *  radius to the browser/OS, which doesn't match this spec on any platform. */
-export function Agreement({ checked, onChange, prefix = `同意${BASE_APP_NAME}` }: AgreementProps) {
-  return (
-    <label className="flex items-start gap-2 text-[13px] text-text-tertiary-1">
-      <span className="relative mt-0.5 flex-none">
-        <input
-          type="checkbox"
-          checked={checked}
-          onChange={(e) => onChange(e.target.checked)}
-          className="peer absolute inset-0 m-0 h-4 w-4 cursor-pointer appearance-none"
-        />
-        <span className="grid h-4 w-4 place-items-center rounded border-[1.5px] border-[#c5cad2] peer-checked:border-accent peer-checked:bg-accent">
-          {checked ? <Icon name="check" className="text-[12px] text-white" /> : null}
-        </span>
-      </span>
-      <span>
-        {prefix}{' '}
-        <a href="#agreement" onClick={(e) => e.preventDefault()} className="text-accent no-underline">
-          《用户协议》
-        </a>{' '}
-        和{' '}
-        <a href="#privacy" onClick={(e) => e.preventDefault()} className="text-accent no-underline">
-          《隐私政策》
-        </a>
-      </span>
-    </label>
-  );
-}
diff --git a/web/src/features/auth/components/VerificationCodeButton.tsx b/web/src/features/auth/components/VerificationCodeButton.tsx
index ce4585d6..f0f9619c 100644
--- a/web/src/features/auth/components/VerificationCodeButton.tsx
+++ b/web/src/features/auth/components/VerificationCodeButton.tsx
@@ -7,7 +7,7 @@ const PHONE_RE = /^\d{11}$/;
 
 interface VerificationCodeButtonProps {
   phone: string;
-  scene: 'register' | 'reset_password';
+  scene: 'reset_password';
   onChallenge: (challengeId: string) => void;
   onError: (message: string) => void;
 }
diff --git a/web/src/features/messages/ConversationView.tsx b/web/src/features/messages/ConversationView.tsx
index a84959ff..ef6d76b8 100644
--- a/web/src/features/messages/ConversationView.tsx
+++ b/web/src/features/messages/ConversationView.tsx
@@ -28,7 +28,7 @@ import { buildMentionedContent, detectMentionTrigger, type PendingMention } from
 import { sendFile, sendImage, sendVoice } from '@/lib/tinode/attachments';
 import { useChatList, useTinode, useTopicMessages } from '@/lib/tinode/hooks';
 import { forwardMessage, sendPrebuiltContent, sendReply, sendText } from '@/lib/tinode/send';
-import { closeConversation, openConversation } from '@/lib/tinode/topics';
+import { closeConversation, ensureTopicAttached, openConversation } from '@/lib/tinode/topics';
 import { useCallStore } from '@/stores/calls';
 import { useMessageJumpStore } from '@/stores/messageJump';
 import { useSessionStore } from '@/stores/session';
@@ -469,16 +469,23 @@ export function ConversationView() {
     // actually said first.
     const orderedSeqs = [...selectedSeqs].sort((a, b) => a - b);
     for (const targetTopic of targetTopics) {
-      const target = tinode.getTopic(targetTopic);
-      for (const seq of orderedSeqs) {
-        const msg = topic.findMessage(seq);
-        // A message can be recalled by its sender AFTER it was already selected (the checkbox
-        // itself refuses a NEW selection of a recalled message, but can't retroactively un-select
-        // one recalled mid-session) -- forwarding null content would silently send an empty bubble
-        // with a misleading "forwarded from" tag rather than the message the user actually picked.
-        if (msg && !isRecalled(msg)) forwardMessage(topicId, msg, target).catch((err) => showError(err, '转发失败'));
-      }
-      if (comment) sendText(target, comment).catch((err) => showError(err, '附言发送失败'));
+      // A target that isn't the conversation currently open (i.e. almost any real forward target)
+      // is not actually subscribed, and publishing on an unsubscribed topic is rejected outright by
+      // the SDK -- see ensureTopicAttached's own comment for why this is the common case, not an
+      // edge case.
+      ensureTopicAttached(targetTopic)
+        .then((target) => {
+          for (const seq of orderedSeqs) {
+            const msg = topic.findMessage(seq);
+            // A message can be recalled by its sender AFTER it was already selected (the checkbox
+            // itself refuses a NEW selection of a recalled message, but can't retroactively un-select
+            // one recalled mid-session) -- forwarding null content would silently send an empty bubble
+            // with a misleading "forwarded from" tag rather than the message the user actually picked.
+            if (msg && !isRecalled(msg)) forwardMessage(topicId, msg, target).catch((err) => showError(err, '转发失败'));
+          }
+          if (comment) sendText(target, comment).catch((err) => showError(err, '附言发送失败'));
+        })
+        .catch((err) => showError(err, '转发失败'));
     }
     setBulkForwardOpen(false);
     exitSelectMode();
@@ -815,9 +822,12 @@ export function ConversationView() {
           onClose={() => setForwardMsg(null)}
           onPick={(targetTopics, comment) => {
             for (const targetTopic of targetTopics) {
-              const target = tinode.getTopic(targetTopic);
-              forwardMessage(topicId, forwardMsg, target).catch((err) => showError(err, '转发失败'));
-              if (comment) sendText(target, comment).catch((err) => showError(err, '附言发送失败'));
+              ensureTopicAttached(targetTopic)
+                .then((target) => {
+                  forwardMessage(topicId, forwardMsg, target).catch((err) => showError(err, '转发失败'));
+                  if (comment) sendText(target, comment).catch((err) => showError(err, '附言发送失败'));
+                })
+                .catch((err) => showError(err, '转发失败'));
             }
             setForwardMsg(null);
           }}
diff --git a/web/src/features/messages/ForwardPickerModal.tsx b/web/src/features/messages/ForwardPickerModal.tsx
index 5ddfc22c..c5be9fea 100644
--- a/web/src/features/messages/ForwardPickerModal.tsx
+++ b/web/src/features/messages/ForwardPickerModal.tsx
@@ -1,9 +1,11 @@
-import { useState } from 'react';
+import { useMemo, useState } from 'react';
+
+import type { Contact } from 'tinode-sdk';
 
 import { Icon } from '@/app/Icon';
 import { avatarBgClass, avatarLetter } from '@/lib/avatar';
 import { useEscapeKey } from '@/lib/hooks';
-import { useChatList } from '@/lib/tinode/hooks';
+import { useChatList, useTinode } from '@/lib/tinode/hooks';
 
 const MAX_COMMENT_LENGTH = 200;
 
@@ -24,12 +26,26 @@ interface ForwardPickerModalProps {
  */
 export function ForwardPickerModal({ onPick, onClose }: ForwardPickerModalProps) {
   const contacts = useChatList();
+  const tinode = useTinode();
   const [query, setQuery] = useState('');
   const [selected, setSelected] = useState<Set<string>>(new Set());
   const [comment, setComment] = useState('');
   useEscapeKey(onClose);
   const filtered = contacts.filter((c) => !query.trim() || (c.public?.fn || '').includes(query.trim()));
 
+  // The list used to mix friends and groups in one flat run -- every other list in this app
+  // (ChatListColumn's pinned/sorted rows, ContactsListColumn) already keeps the two visually
+  // separate, so this was the odd one out and made a specific group hard to spot among dozens of
+  // P2P contacts.
+  const friends = useMemo(
+    () => filtered.filter((c) => !!c.topic && !tinode.getTopic(c.topic).isGroupType()),
+    [filtered, tinode],
+  );
+  const groups = useMemo(
+    () => filtered.filter((c) => !!c.topic && tinode.getTopic(c.topic).isGroupType()),
+    [filtered, tinode],
+  );
+
   const toggle = (topic: string) => {
     setSelected((prev) => {
       const next = new Set(prev);
@@ -39,11 +55,50 @@ export function ForwardPickerModal({ onPick, onClose }: ForwardPickerModalProps)
     });
   };
 
+  const visibleTopics = useMemo(() => filtered.map((c) => c.topic).filter((t): t is string => !!t), [filtered]);
+  const allVisibleSelected = visibleTopics.length > 0 && visibleTopics.every((t) => selected.has(t));
+  const toggleSelectAll = () => {
+    setSelected((prev) => {
+      if (allVisibleSelected) {
+        // Only drop the ones the CURRENT search actually shows -- a selection made under an earlier,
+        // now-cleared query shouldn't be wiped out by un-selecting "all" of a narrower view.
+        const next = new Set(prev);
+        for (const t of visibleTopics) next.delete(t);
+        return next;
+      }
+      return new Set([...prev, ...visibleTopics]);
+    });
+  };
+
   const send = () => {
     if (selected.size === 0) return;
     onPick([...selected], comment.trim());
   };
 
+  const renderRow = (c: Contact) => {
+    const isSelected = !!c.topic && selected.has(c.topic);
+    return (
+      <button
+        key={c.topic}
+        type="button"
+        onClick={() => c.topic && toggle(c.topic)}
+        className="flex w-full items-center gap-3 rounded-lg px-3 py-2 text-left hover:bg-surface-rail"
+      >
+        <span
+          className={`grid h-9 w-9 flex-none place-items-center rounded-lg text-sm font-medium text-white ${avatarBgClass(c.topic || '')}`}
+        >
+          {avatarLetter(c.public?.fn)}
+        </span>
+        <span className="min-w-0 flex-1 truncate text-sm text-text-body">{c.public?.fn || c.topic}</span>
+        <span
+          className={`grid h-5 w-5 flex-none place-items-center rounded-full border ${isSelected ? 'border-accent bg-accent' : 'border-[#d5d9df]'}`}
+        >
+          {isSelected ? <Icon name="check" className="text-[14px] text-white" /> : null}
+        </span>
+      </button>
+    );
+  };
+
   return (
     <div className="fixed inset-0 z-50 flex items-center justify-center bg-[#22262d]/25" onClick={onClose}>
       <div className="flex h-[560px] w-[420px] flex-col rounded-xl bg-white shadow-modal" onClick={(e) => e.stopPropagation()}>
@@ -66,31 +121,31 @@ export function ForwardPickerModal({ onPick, onClose }: ForwardPickerModalProps)
               className="ml-2 w-full bg-transparent text-sm outline-none placeholder:text-text-placeholder-2"
             />
           </div>
+          {visibleTopics.length ? (
+            <button type="button" onClick={toggleSelectAll} className="mt-2 text-xs text-accent">
+              {allVisibleSelected ? '取消全选' : '全选'}
+            </button>
+          ) : null}
         </div>
         <div className="flex-1 overflow-y-auto px-2 py-2">
-          {filtered.map((c) => {
-            const isSelected = !!c.topic && selected.has(c.topic);
-            return (
-              <button
-                key={c.topic}
-                type="button"
-                onClick={() => c.topic && toggle(c.topic)}
-                className="flex w-full items-center gap-3 rounded-lg px-3 py-2 text-left hover:bg-surface-rail"
-              >
-                <span
-                  className={`grid h-9 w-9 flex-none place-items-center rounded-lg text-sm font-medium text-white ${avatarBgClass(c.topic || '')}`}
-                >
-                  {avatarLetter(c.public?.fn)}
-                </span>
-                <span className="min-w-0 flex-1 truncate text-sm text-text-body">{c.public?.fn || c.topic}</span>
-                <span
-                  className={`grid h-5 w-5 flex-none place-items-center rounded-full border ${isSelected ? 'border-accent bg-accent' : 'border-[#d5d9df]'}`}
-                >
-                  {isSelected ? <Icon name="check" className="text-[14px] text-white" /> : null}
-                </span>
-              </button>
-            );
-          })}
+          {friends.length ? (
+            <>
+              <div className="px-3 pb-1 pt-2 text-xs text-text-tertiary-2">好友</div>
+              {friends.map(renderRow)}
+            </>
+          ) : null}
+          {groups.length ? (
+            <>
+              <div className="px-3 pb-1 pt-2 text-xs text-text-tertiary-2">群聊</div>
+              {groups.map(renderRow)}
+            </>
+          ) : null}
+          {!friends.length && !groups.length ? (
+            <div className="flex flex-col items-center justify-center gap-2 py-10 text-text-tertiary-4">
+              <Icon name="search_off" className="!text-4xl" />
+              <span className="text-sm">未找到相关联系人</span>
+            </div>
+          ) : null}
         </div>
         <div className="flex-none border-t border-border-list-item p-3">
           <textarea
diff --git a/web/src/lib/api/auth.ts b/web/src/lib/api/auth.ts
index 6486b239..d86a8933 100644
--- a/web/src/lib/api/auth.ts
+++ b/web/src/lib/api/auth.ts
@@ -5,32 +5,19 @@ export interface VerificationCodeResponse {
   resend_after_seconds: number;
 }
 
-export function requestVerificationCode(scene: 'register' | 'reset_password', phone: string) {
+export function requestVerificationCode(scene: 'reset_password', phone: string) {
   return imPost<VerificationCodeResponse>('/auth/verification-codes', { scene, phone }, { auth: false });
 }
 
-export interface VerifyCodeResponse {
-  verification_token: string;
-}
-
-/** No Idempotency-Key here, matching the old app's im-api.js -- a plain code check, not a mutation. */
-export function verifyRegisterCode(challengeId: string, code: string) {
-  return imRequest<VerifyCodeResponse>(`/auth/verification-codes/${encodeURIComponent(challengeId)}/verify`, {
-    method: 'POST',
-    auth: false,
-    body: { code },
-  });
-}
-
 export interface PasswordResetVerifyResponse {
   reset_token: string;
 }
 
 /**
- * Password reset verifies through an entirely different endpoint family than registration
- * (`/auth/password-reset/*`, not `/auth/verification-codes/*`) even though both share the same
- * `/auth/verification-codes` code-request endpoint via `scene`. No Idempotency-Key, same reasoning
- * as verifyRegisterCode.
+ * Password reset verifies through an entirely different endpoint family
+ * (`/auth/password-reset/*`, not `/auth/verification-codes/*`) even though it shares the same
+ * `/auth/verification-codes` code-request endpoint above via `scene`. No Idempotency-Key -- a plain
+ * code check, not a mutation.
  */
 export function verifyPasswordResetCode(challengeId: string, code: string) {
   return imRequest<PasswordResetVerifyResponse>(
diff --git a/web/src/lib/tinode/connection.ts b/web/src/lib/tinode/connection.ts
index 65991815..095e038b 100644
--- a/web/src/lib/tinode/connection.ts
+++ b/web/src/lib/tinode/connection.ts
@@ -110,32 +110,18 @@ if (typeof window !== 'undefined') {
 }
 
 /**
- * Registration-only extra fields (username/phone/invite_code) queued by registerAccount() below,
- * consumed the next time an {acc} packet actually goes out. A module-level slot, not a per-call
- * argument, because the SDK's own createAccountBasic() has no parameter for them at all -- same
- * one-shot-queue shape as the old app's `tinode.__pendingAccExtra`.
- */
-let pendingAccExtra: Record<string, unknown> | null = null;
-
-export function queueAccExtra(extra: Record<string, unknown>) {
-  pendingAccExtra = extra;
-}
-
-/**
- * The server extends two stock packets with fields the vendored JS SDK has no API for
- * (server/datamodel.go): {hi}'s `tenant` (resolved via POST /v1/im/tenants/resolve) and {acc}'s
- * `username`/`phone`/`invite_code` (used by server/user.go's replyCreateUser during registration).
- * The packet builder is private, so the only usable hook is wrapping the connection's raw sendText
- * and injecting fields into the already-serialized JSON. Ported as-is from the old app's
- * tnSetup/installTenantHiPatch -- this is a real backend protocol extension, not an old-codebase-
- * specific workaround.
+ * The server extends the stock {hi} packet with a `tenant` field the vendored JS SDK has no API for
+ * (resolved via POST /v1/im/tenants/resolve; see server/datamodel.go). The packet builder is private,
+ * so the only usable hook is wrapping the connection's raw sendText and injecting the field into the
+ * already-serialized JSON. Ported as-is from the old app's tnSetup/installTenantHiPatch -- this is a
+ * real backend protocol extension, not an old-codebase-specific workaround.
  */
 function installTenantHiPatch(t: Tinode) {
   const conn = t._connection;
   if (!conn || conn.__tenantPatched) return;
   const original = conn.sendText.bind(conn);
   conn.sendText = (msg: unknown) => {
-    if (typeof msg === 'string' && (msg.indexOf('"hi":') >= 0 || msg.indexOf('"acc":') >= 0)) {
+    if (typeof msg === 'string' && msg.indexOf('"hi":') >= 0) {
       try {
         const parsed = JSON.parse(msg);
         if (parsed.hi) {
@@ -144,10 +130,6 @@ function installTenantHiPatch(t: Tinode) {
             parsed.hi.tenant = tenant.code;
             msg = JSON.stringify(parsed);
           }
-        } else if (parsed.acc && pendingAccExtra) {
-          Object.assign(parsed.acc, pendingAccExtra);
-          pendingAccExtra = null;
-          msg = JSON.stringify(parsed);
         }
       } catch {
         // Not valid JSON -- send as is.
@@ -302,8 +284,8 @@ export function restoreSession(token: string): Promise<string | null> {
  * Deduped the same way connect()/restoreSession() are above, for the identical reason: LoginPage's
  * own `submitting` state guard only takes effect once React re-renders with the submit button
  * disabled, which is a moment too late for a genuine fast double-click/double-Enter to be stopped by
- * -- every OTHER non-idempotent SDK call in this module (connect/restoreSession/registerAccount) was
- * already deduped against exactly this race, `loginBasic` was the one left calling straight through.
+ * -- every OTHER non-idempotent SDK call in this module (connect/restoreSession) was already deduped
+ * against exactly this race, `loginBasic` was the one left calling straight through.
  */
 let loginPromise: Promise<LoginCtrl> | null = null;
 
@@ -327,85 +309,3 @@ export function subscribeConnectionStatus(callback: () => void): () => void {
   listeners.add(callback);
   return () => listeners.delete(callback);
 }
-
-export interface RegisterParams {
-  /** `''` when omitted -- valid to leave blank as long as `phone` is filled. */
-  username: string;
-  /** Bare 11-digit phone, no "+86" prefix. `''` on the username-only path (no phone at all). */
-  phone: string;
-  password: string;
-  /** `''` when omitted. Required (and validated) by the caller on the username-only path. */
-  inviteCode: string;
-  /** Only meaningful when `phone` is non-empty -- from verifyRegisterCode()'s response. */
-  verificationToken?: string;
-  challengeId?: string;
-}
-
-/**
- * Unified username-or-phone registration (product Ch.1.4). THREE DIFFERENT phone representations
- * are involved in one `{acc}` packet and mixing them up throws a 422 "policy violation" with no
- * further detail (confirmed live against the real backend, then traced to server/user.go's
- * resolveRegistrationAccount):
- *  - `login_` (createAccountBasic's first arg, becomes the secret's account half) must equal what
- *    resolveRegistrationAccount computes as secretAccount -- for phone registration (and no
- *    username typed) that's the E.164-normalized phone, e.g. "+8613900005232"; if a username was
- *    also typed, the username itself takes precedence (server/user.go: username!="" && phone!=""
- *    => account=username), matching the old app's fixed bug where a typed username used to get
- *    silently dropped on the phone path.
- *  - the injected `acc.phone` extra field is checked *before* any E.164 normalization happens
- *    (`len(phone) != 11 || !asciiRegistrationDigits(phone)`) -- it must be the bare 11-digit number
- *    with no "+86" prefix.
- *  - `cred[].val` (the `tel` credential itself) is ALSO the bare 11-digit number, not E.164 -- every
- *    one of the doc's own worked examples (docs/IM-前后端对接文档.md, both the 手机号验证方式 and
- *    仅手机号注册方式 blocks) shows `cred.val` identical to the bare `phone` field even in the exact
- *    same JSON object where `secret` DOES carry the `+86`-prefixed form -- the doc is deliberately
- *    inconsistent between the two, not sloppy. A missed 3rd case: an earlier version of this
- *    function got the first two representations right but still E.164-prefixed this one.
- *
- * On the username-only path (no phone at all) `cred` must be left `undefined`, never a literal
- * `null` -- tinode-sdk's `Tinode.credential()` does `typeof meth == 'object'` to sniff its argument
- * shape, and `typeof null === 'object'` is true in JS, so passing it a real `null` crashes with
- * "Cannot destructure property 'val' of 'meth' as it is null" instead of sending the {acc} message
- * at all (confirmed by reading the old app's own history of this exact bug).
- */
-let registerPromise: Promise<LoginCtrl> | null = null;
-
-/** Deduped the same way connect()/restoreSession() are above, for the same class of reason:
- *  createAccountBasic() is non-idempotent (creates a new account per call), so two overlapping
- *  invocations -- e.g. a slow network letting a double-click on "注册" land before the submit
- *  button's own pending-state disables it -- would otherwise send two `{acc}` packets. */
-export function registerAccount(params: RegisterParams): Promise<LoginCtrl> {
-  if (registerPromise) return registerPromise;
-  registerPromise = registerAccountImpl(params).finally(() => {
-    registerPromise = null;
-  });
-  return registerPromise;
-}
-
-async function registerAccountImpl({
-  username,
-  phone,
-  password,
-  inviteCode,
-  verificationToken,
-  challengeId,
-}: RegisterParams): Promise<LoginCtrl> {
-  const t = getTinode();
-  if (!t.isConnected()) {
-    await connect();
-  }
-  const usingPhone = !!phone;
-  queueAccExtra({ username: username || '', phone: phone || '', invite_code: inviteCode || '' });
-
-  const secretAccount = usingPhone ? username || `+86${phone}` : username;
-  const cred =
-    usingPhone && verificationToken && challengeId
-      ? Tinode.credential({ meth: 'tel', val: phone, resp: verificationToken, params: { challenge_id: challengeId } })
-      : undefined;
-
-  const trimmedName = username.trim();
-  return t.createAccountBasic(secretAccount, password, {
-    public: trimmedName ? { fn: trimmedName } : undefined,
-    cred: cred ?? undefined,
-  });
-}
diff --git a/web/src/lib/tinode/topics.ts b/web/src/lib/tinode/topics.ts
index f75166b8..190dc5a9 100644
--- a/web/src/lib/tinode/topics.ts
+++ b/web/src/lib/tinode/topics.ts
@@ -95,8 +95,8 @@ export function getMessagesSnapshot(topicName: string): StoredMessage[] {
 
 /** Deduped the same way openConversation/connect are -- subscribing the same `me` topic twice
  *  concurrently is the same non-idempotent-WS-call shape as those (currently reachable from
- *  RequireAuth.tsx/LoginPage.tsx/RegisterPage.tsx, which don't overlap today, but this is cheap
- *  insurance against a future call site that does, e.g. a manual "reload contacts" retry button). */
+ *  RequireAuth.tsx/LoginPage.tsx, which don't overlap today, but this is cheap insurance against a
+ *  future call site that does, e.g. a manual "reload contacts" retry button). */
 let inFlightMeSubscribe: Promise<unknown> | null = null;
 
 /** Call once at session start (after login) -- chat-list metadata only, no message bodies. */
@@ -214,6 +214,34 @@ export async function closeConversation(topicName: string): Promise<void> {
   await getTinode().getTopic(topicName).leave(false).catch(() => {});
 }
 
+/**
+ * Makes sure a topic can be published to right now, without disturbing whichever conversation is
+ * actually open. `Topic.publishMessage()` rejects outright unless `_attached` is true, and that's
+ * only reliably the case for the ONE topic openConversation/closeConversation currently has open --
+ * any OTHER topic you've ever actually opened and then navigated away from goes back to detached and
+ * STAYS that way (closeConversation's leave() doesn't restore prefetchPreview's original one-shot
+ * subscription, and prefetchPreview itself no-ops on a topic it's already touched once, attached or
+ * not). That covers forwarding a message to anyone other than the person/group you're currently
+ * chatting with -- i.e. most real forwards -- so this isn't a rare edge case to special-case around,
+ * it's the common one. Reuses `inFlightSubscribe` so a concurrent openConversation() for the same
+ * topic is awaited/shared rather than racing it with a second `{sub}` packet (see openConversation's
+ * own comment above for why that matters). Deliberately left attached afterward rather than re-left --
+ * same "cheap to leave attached, likely reopened soon anyway" call prefetchPreview already makes.
+ */
+export function ensureTopicAttached(topicName: string): Promise<Topic> {
+  const topic = getTinode().getTopic(topicName);
+  const pending = inFlightSubscribe.get(topicName);
+  if (pending) return pending;
+  if (topic.isSubscribed()) return Promise.resolve(topic);
+  wireTopicCallbacks(topic);
+  const promise = topic.subscribe().then(() => topic);
+  inFlightSubscribe.set(topicName, promise);
+  promise.finally(() => {
+    if (inFlightSubscribe.get(topicName) === promise) inFlightSubscribe.delete(topicName);
+  });
+  return promise;
+}
+
 let chatListSnapshot: Contact[] | null = null;
 
 /**
diff --git a/web/src/stores/session.ts b/web/src/stores/session.ts
index 3ec190e1..e63acffa 100644
--- a/web/src/stores/session.ts
+++ b/web/src/stores/session.ts
@@ -28,8 +28,8 @@ interface SessionState {
  * it, since a returning user's auto-login still needs it to build the {hi} packet and every REST
  * call's X-Tenant-Code header. `myUserId` is *not* persisted here -- trusting a stale uid from a
  * previous session without re-authenticating would be wrong. Instead, app/RequireAuth.tsx re-derives
- * it on mount via `Tinode.loginToken()` against the reusable session token LoginPage/RegisterPage
- * write to `sessionStorage`, which is the actual thing that should survive a same-tab reload.
+ * it on mount via `Tinode.loginToken()` against the reusable session token LoginPage writes to
+ * `sessionStorage`, which is the actual thing that should survive a same-tab reload.
  */
 export const useSessionStore = create<SessionState>()(
   persist(