diff --git a/apps/waterfall-wiki/ACCOUNT.md b/apps/waterfall-wiki/ACCOUNT.md
new file mode 100644
index 0000000..6f49425
--- /dev/null
+++ b/apps/waterfall-wiki/ACCOUNT.md
@@ -0,0 +1,49 @@
+# Email accounts
+
+`/account` offers registration, password login, email verification/resend, and logout.
+`/api/account/session` returns the current account; other actions use same-origin POST.
+Passwords require at least 12 characters and at most 256 UTF-8 bytes. Only verified
+accounts can log in. Verification links expire after 30 minutes and are consumed once.
+Session tokens expire after seven days; logout deletes the current token immediately.
+Only token SHA-256 digests are stored. Passwords use individually salted scrypt.
+
+## Runtime configuration
+
+The existing production deployment reads `/etc/prompt.env` on ces-control. Set its
+ownership to root and mode to 0600. The operator should update SMTP_PASSWORD there
+through a secure remote session, without putting it in command arguments, repository,
+CI output, release.env, or chat. Existing compose deployment reads this file without
+copying credentials into the release directory. Do not run `docker compose config`
+without `--quiet` against the production environment because interpolation shows secrets.
+Docker administrators can inspect container environment; access to Docker is privileged.
+
+Set ACCOUNT_PUBLIC_ORIGIN to the exact browser origin and SMTP_HOST=smtpdm.aliyun.com,
+SMTP_PORT=465, SMTP_USERNAME and SMTP_FROM=noreply@notice.entroia.com. TLS certificate
+validation stays enabled. Missing SMTP configuration returns a generic service failure;
+resend with the registration password can recover an account whose initial delivery failed.
+
+Keep AUTH_CONFIG_FILE configured for administrator access. Missing administrator
+configuration fails closed. AUTH_DISABLED_FOR_TESTS is false by default and is enabled
+only by the disposable legacy integration stack; never enable it in production.
+Email account cookies never satisfy administrator authorization. With the current HTTP
+acceptance origin use AUTH_COOKIE_SECURE=false; use true after enabling HTTPS.
+
+Limits persist in PostgreSQL: 10 logins and 3 registration/resend attempts per email per
+15 minutes, plus 300 requests per 15 minutes globally. ACCOUNT_TRUST_PROXY defaults
+false. Enable it only when a trusted ingress overwrites x-forwarded-for; this changes
+the global cap to 60 per trusted client address. Do not enable it on the direct public port.
+Limits count failures and successes. Registration/resend always give the same success
+response for existing/unknown emails, and login uses a dummy KDF for unknown accounts.
+The rate limit itself can reveal recent activity for a known email; it does not reveal
+whether an account exists. Synchronous SMTP latency can still expose a timing side channel;
+a durable asynchronous mail queue would be needed to fully decouple delivery timing.
+Logout remains available when login/mail limits are exhausted. No password recovery or
+account deletion is included.
+
+## Verification
+
+ces-control runs crypto/origin tests, PostgreSQL verification-token replay races,
+expired/revoked sessions, concurrent limit consumption and unverified login rejection.
+Production-auth exercises verify that account cookies cannot authorize legacy writes.
+Actual SMTP delivery and visual acceptance at http://8.211.154.134:18131/account require
+operator runtime configuration and the normal manually approved deployment.
diff --git a/apps/waterfall-wiki/src/lib/account-handler.ts b/apps/waterfall-wiki/src/lib/account-handler.ts
index 4a7dbbb..1c9c8b9 100644
--- a/apps/waterfall-wiki/src/lib/account-handler.ts
+++ b/apps/waterfall-wiki/src/lib/account-handler.ts
@@ -14,10 +14,11 @@ export async function POST(request: Request,context: Context) {
  const {action} = await context.params;
  if (!['register','resend','verify','login','logout'].includes(action)) return json({error:'不存在'},404);
  try {
+  // Revocation remains available even when login or mail limits are exhausted.
+  if (action === 'logout') { await logoutAccount(request); const r=json({ok:true});r.headers.set('Set-Cookie',accountCookie('',true));return r; }
   // Use a global cap by default: forwarding headers are untrusted unless the deployment explicitly enables a trusted ingress.
   const ip = process.env.ACCOUNT_TRUST_PROXY === 'true' ? request.headers.get('x-forwarded-for')?.split(',')[0].trim() || 'unknown' : 'global';
   if (!await rateLimit('request:'+ip,process.env.ACCOUNT_TRUST_PROXY === 'true' ? 60 : 300)) return json({error:'请求过于频繁，请稍后再试'},429);
-  if (action === 'logout') { await logoutAccount(request); const r=json({ok:true});r.headers.set('Set-Cookie',accountCookie('',true));return r; }
   if (Number(request.headers.get('content-length') || 0)>4096) return json({error:'请求过大'},413);
   const text=await request.text(); if(text.length>4096)return json({error:'请求过大'},413);
   let body;try{body=JSON.parse(text);}catch{return json({error:'请求格式错误'},400);}
diff --git a/apps/waterfall-wiki/src/proxy.ts b/apps/waterfall-wiki/src/proxy.ts
index 11b2a4e..65450ad 100644
--- a/apps/waterfall-wiki/src/proxy.ts
+++ b/apps/waterfall-wiki/src/proxy.ts
@@ -9,7 +9,10 @@ export function proxy(request: NextRequest) {
  if (path === '/brand-mark.svg' || path === '/login' || path === '/api/auth/login' || path === '/api/auth/logout' || path === '/api/health' || path === '/api/ready' || path.startsWith('/_next/static/')) return NextResponse.next({headers:responseHeaders});
  let config;
  try { config = authConfig(); } catch { return NextResponse.json({error:'登录服务配置不可用'}, {status:503,headers:responseHeaders}); }
- if (!config) return NextResponse.next();
+ if (!config) {
+  if (process.env.AUTH_DISABLED_FOR_TESTS === 'true' && process.env.AUTH_CONFIG_FILE === '') return NextResponse.next();
+  return NextResponse.json({error:'管理员登录服务尚未配置'}, {status:503,headers:responseHeaders});
+ }
  const bearer = request.headers.get('authorization');
  const token = bearer?.startsWith('Bearer ') ? bearer.slice(7) : request.cookies.get(SESSION_COOKIE)?.value;
  if (validSession(token,config)) {
diff --git a/apps/waterfall-wiki/tests/auth.test.ts b/apps/waterfall-wiki/tests/auth.test.ts
index 28132ac..a3b8114 100644
--- a/apps/waterfall-wiki/tests/auth.test.ts
+++ b/apps/waterfall-wiki/tests/auth.test.ts
@@ -34,14 +34,18 @@ test('proxy protects APIs, data routes, static content and Studio; fails closed'
  const temp=mkdtempSync(join(tmpdir(),'prompt-auth-')); const old=process.env.AUTH_CONFIG_FILE;
  try{
   const config=newAuthConfig(); process.env.AUTH_CONFIG_FILE=join(temp,'config.json'); writeFileSync(process.env.AUTH_CONFIG_FILE,JSON.stringify(config));
-  for(const path of ['/','/library/import','/skills/example.png','/_next/data/build/index.json','/studio']) assert.equal(proxy(new NextRequest('http://wiki.test'+path)).status,307,path);
+  for(const path of ['/library/import','/skills/example.png','/_next/data/build/index.json','/studio']) assert.equal(proxy(new NextRequest('http://wiki.test'+path)).status,307,path);
   for(const path of ['/api/upload','/studio/api/export','/api/feed']) assert.equal(proxy(new NextRequest('http://wiki.test'+path)).status,401,path);
-  for(const path of ['/login','/brand-mark.svg','/_next/static/chunk.js','/api/health','/api/ready']) assert.equal(proxy(new NextRequest('http://wiki.test'+path)).status,200,path);
+  for(const path of ['/','/guide/welcome','/protocol','/api/guides/welcome','/account','/api/account/session','/login','/brand-mark.svg','/_next/static/chunk.js','/api/health','/api/ready']) assert.equal(proxy(new NextRequest('http://wiki.test'+path)).status,200,path);
   const headers={cookie:'prompt_session='+signSession(config),host:'wiki.test'};
   assert.equal(proxy(new NextRequest('http://wiki.test/api/feed',{headers})).status,200);
   assert.equal(proxy(new NextRequest('http://wiki.test/api/posts',{method:'POST',headers:{...headers,origin:'http://evil.test'}})).status,403);
   assert.equal(proxy(new NextRequest('http://wiki.test/api/posts',{method:'POST',headers:{...headers,origin:'http://wiki.test'}})).status,200);
-  writeFileSync(process.env.AUTH_CONFIG_FILE,'{}'); assert.throws(()=>authConfig()); assert.equal(proxy(new NextRequest('http://wiki.test/')).status,503);
+  assert.equal(proxy(new NextRequest('http://wiki.test/api/posts',{method:'POST',headers:{cookie:'wiki_account='+ 'a'.repeat(64)}})).status,401);
+  assert.equal(proxy(new NextRequest('http://wiki.test/guide/welcome',{method:'POST'})).status,401);
+  writeFileSync(process.env.AUTH_CONFIG_FILE,'{}'); assert.throws(()=>authConfig()); assert.equal(proxy(new NextRequest('http://wiki.test/api/posts')).status,503);
+  delete process.env.AUTH_CONFIG_FILE;
+  assert.equal(proxy(new NextRequest('http://wiki.test/api/posts')).status,503,'Missing admin configuration fails closed');
  }finally{if(old===undefined)delete process.env.AUTH_CONFIG_FILE;else process.env.AUTH_CONFIG_FILE=old;rmSync(temp,{recursive:true,force:true});}
 });
 
diff --git a/compose.yml b/compose.yml
index 5bd9c3d..48f6f12 100644
--- a/compose.yml
+++ b/compose.yml
@@ -12,6 +12,7 @@ x-waterfall-wiki-environment: &waterfall-wiki-environment
   CHROMIUM_PATH: /usr/bin/chromium
   RENDER_ORIGIN: http://waterfall-wiki:3000
   AUTH_CONFIG_FILE: ${AUTH_CONFIG_FILE:-}
+  AUTH_DISABLED_FOR_TESTS: ${AUTH_DISABLED_FOR_TESTS:-false}
   AUTH_COOKIE_SECURE: ${AUTH_COOKIE_SECURE:-true}
   ACCOUNT_PUBLIC_ORIGIN: ${ACCOUNT_PUBLIC_ORIGIN:-http://8.211.154.134:18131}
   ACCOUNT_TRUST_PROXY: ${ACCOUNT_TRUST_PROXY:-false}
diff --git a/scripts/integration.sh b/scripts/integration.sh
index 857a956..4e65f87 100644
--- a/scripts/integration.sh
+++ b/scripts/integration.sh
@@ -11,6 +11,8 @@ cleanup(){ code=$?; if [ "$code" -ne 0 ]; then compose logs --tail 160 waterfall
 trap cleanup EXIT
 # Random credentials exist only for this disposable stack; no host Node required.
 docker run --rm --entrypoint node "$WATERFALL_WIKI_IMAGE" -e "const c=require('crypto');const hex=()=>c.randomBytes(24).toString('hex');console.log('POSTGRES_PASSWORD='+hex()+'\nS3_ACCESS_KEY='+hex()+'\nS3_SECRET_KEY='+hex())" > "$TEST_ENV"
+# Explicitly isolate legacy unauthenticated integration coverage; production fails closed.
+printf '\nAUTH_DISABLED_FOR_TESTS=true\n' >> "$TEST_ENV"
 compose up -d --no-build --wait --wait-timeout 120 postgres objects
 compose run --rm --no-deps migrate
 compose up -d --no-build --wait --wait-timeout 150 waterfall-wiki waterfall-wiki-worker