diff --git a/packages/webui/src/public/bus.js b/packages/webui/src/public/bus.js
index 876dbad8a..42643689a 100644
--- a/packages/webui/src/public/bus.js
+++ b/packages/webui/src/public/bus.js
@@ -558,10 +558,14 @@
   // REQ-WEB-1: drafts survive polling/refusals; only an explicit submit writes.
   let settingsSnapshot=null, settingsInputs=null, settingsSaving=false, settingsReceipt='';
   const inputKey=parts=>JSON.stringify(parts);
+  // Row 167 (#1664): one snapshot for the launch form, the assistant forms and the token limit
+  // reset. A read replaces it only while no form has a draft; every save and reset sets it from
+  // its answer, so the next submit sends the revision the last write returned.
+  const launchDrafts=()=>!!settingsInputs||Object.keys(assistantDrafts).length>0;
+  function takeSnapshot(value){if(!settingsSnapshot||!launchDrafts())settingsSnapshot=value;return settingsSnapshot;}
   function launchForm(value){
     if(!value||value.refused)return `<section class="panel"><h2>Agent limits</h2><p>${txt(value?.message||'Launch settings are not configured.')}</p></section>`;
-    if(!settingsInputs)settingsSnapshot=value;
-    const v=settingsSnapshot, modelTable=v.models||{}, limits=v.limits||{}, usage=v.usage||{};
+    const v=takeSnapshot(value), modelTable=v.models||{}, limits=v.limits||{}, usage=v.usage||{};
     const val=(parts,fallback)=>settingsInputs&&Object.hasOwn(settingsInputs,inputKey(parts))?settingsInputs[inputKey(parts)]:fallback;
     const disabled=!canSend||out()||settingsSaving?' disabled':'';
     const field=(parts,label,count,current)=>`<label>${txt(label)} <input data-setting="${esc(inputKey(parts))}" type="number" min="0" step="1" value="${esc(val(parts,count??''))}"${disabled}> <span class="small muted">${txt(current??0)} running</span></label>`;
@@ -606,7 +610,7 @@
     const path=e.target.dataset?.limitReset;if(path===undefined||!canSend||out()||settingsSaving)return;
     const revision=settingsSnapshot?.revision;if(!/^[a-f0-9]{64}$/.test(revision??''))return;
     settingsSaving=true;resetReceipt='';render(false);let reread=false;
-    try{const response=await fetch('/api/settings',{method:'POST',headers:{'content-type':'application/json'},body:JSON.stringify({revision,reset:[JSON.parse(path)]}),cache:'no-store',redirect:'manual'});if(response.type==='opaqueredirect'){resetReceipt='Sign in again.';signOut();}else{const result=await response.json();if(response.ok&&/^[a-f0-9]{64}$/.test(result?.revision??'')){if(!settingsInputs)settingsSnapshot=result;const prior=last.get('api:settings');if(prior)last.set('api:settings',{...prior,launch:result});reread=true;resetReceipt='Limit reset.';}else resetReceipt=result?.sent==='unknown'?'Outcome unknown. Read current settings before trying again.':`${result?.message||'Reset refused.'}`;}}
+    try{const response=await fetch('/api/settings',{method:'POST',headers:{'content-type':'application/json'},body:JSON.stringify({revision,reset:[JSON.parse(path)]}),cache:'no-store',redirect:'manual'});if(response.type==='opaqueredirect'){resetReceipt='Sign in again.';signOut();}else{const result=await response.json();if(response.ok&&/^[a-f0-9]{64}$/.test(result?.revision??'')){settingsSnapshot=result;const prior=last.get('api:settings');if(prior)last.set('api:settings',{...prior,launch:result});reread=true;resetReceipt='Limit reset.';}else resetReceipt=result?.sent==='unknown'?'Outcome unknown. Read current settings before trying again.':`${result?.message||'Reset refused.'}`;}}
     catch{resetReceipt='Outcome unknown. Read current settings before trying again.';}finally{settingsSaving=false;if(!out())render(reread);}
   });
   function tokenUsage(value) {
@@ -624,12 +628,12 @@
   // Row 155 (#1649, Q169): each assistant instance's settings, its seat name and a stop. A save
   // sends only the fields that changed, with the read's revision. Drafts survive polling and
   // refusals as in the limits form, and nothing retries.
-  let assistantSnapshot=null, assistantDrafts=Object.create(null), nameDrafts=Object.create(null), assistantBusy=false, assistantReceipts=Object.create(null);
+  let assistantDrafts=Object.create(null), nameDrafts=Object.create(null), assistantBusy=false, assistantReceipts=Object.create(null);
   const asShown=(entry,field)=>field==='definition'?entry.definition??'':entry[field]==null?'':JSON.stringify(entry[field],null,2);
   function assistantSection(value,names){
-    if(!value||value.refused||!value.assistants||!Object.keys(value.assistants).length)return '';
-    if(!Object.keys(assistantDrafts).length)assistantSnapshot=value;
-    const v=assistantSnapshot, disabled=!canSend||out()||assistantBusy?' disabled':'';
+    if(!value||value.refused)return '';
+    const v=takeSnapshot(value);if(!v.assistants||!Object.keys(v.assistants).length)return '';
+    const disabled=!canSend||out()||assistantBusy?' disabled':'';
     const named=names?Object.fromEntries(names.map(r=>[r.instance,r.name])):null;
     const forms=Object.entries(v.assistants).map(([instance,entry])=>{
       const d=assistantDrafts[instance]||{}, val=f=>Object.hasOwn(d,f)?d[f]:asShown(entry,f), k=esc(instance);
@@ -639,7 +643,7 @@
     return `<section class="panel" aria-labelledby="assistant-title"><h2 id="assistant-title">Assistant</h2><p>The definition stays an assistant one. Holder and credentials stay hand edits. Stop ends the runs of your threads; the assistant starts again when you next write to it.</p>${forms}<p class="small muted">${canSend?'Changes are checked and logged with your identity.':'Changes require signed-in send mode.'}</p></section>`;
   }
   function assistantPayload(instance,form){
-    const entry=assistantSnapshot.assistants[instance], patch={};
+    const entry=settingsSnapshot.assistants[instance], patch={};
     for(const f of ['definition','vars','tracker']){
       const text=form.querySelector(`[data-assistant-field="${f}"]`).value, what=f==='vars'?'Vars':'The tracker';
       if(text===asShown(entry,f))continue;
@@ -650,7 +654,7 @@
       patch[f]=parsed;
     }
     if(!Object.keys(patch).length)throw Error('Nothing changed.');
-    return {revision:assistantSnapshot.revision,assistants:{[instance]:patch}};
+    return {revision:settingsSnapshot.revision,assistants:{[instance]:patch}};
   }
   const unknownAssistant='Outcome unknown. Read current settings before trying again. Draft kept.';
   async function assistantPost(url,payload,instance,ok){
@@ -663,7 +667,7 @@
   document.addEventListener('submit',async e=>{
     const form=assistantForm(e.target);if(!form||e.target!==form)return;e.preventDefault();if(!canSend||out()||assistantBusy)return;const instance=form.dataset.instance;let payload;
     try{payload=assistantPayload(instance,form);}catch(err){assistantReceipts[instance]=err.message;render(false);return;}
-    await assistantPost('/api/settings',payload,instance,result=>{if(!/^[a-f0-9]{64}$/.test(result?.revision??''))return unknownAssistant;delete assistantDrafts[instance];assistantSnapshot=result;const prior=last.get('api:settings');if(prior)last.set('api:settings',{...prior,launch:result});return 'Assistant settings saved.';});
+    await assistantPost('/api/settings',payload,instance,result=>{if(!/^[a-f0-9]{64}$/.test(result?.revision??''))return unknownAssistant;delete assistantDrafts[instance];settingsSnapshot=result;const prior=last.get('api:settings');if(prior)last.set('api:settings',{...prior,launch:result});return 'Assistant settings saved.';});
   });
   document.addEventListener('click',async e=>{
     const form=assistantForm(e.target);if(!form||!canSend||out()||assistantBusy)return;const instance=form.dataset.instance;
@@ -726,7 +730,7 @@
     const s = await get.api('settings'), n = s.notifier || {};
     let usage, names = null;
     try { [usage] = await get('usage'); } catch (err) { if (err.status === 403 || err.code === 'signed-out') throw err; }
-    try { names = await get('names'); } catch { /* the section says the name could not be read */ }
+    try { names = await get('names'); } catch (err) { if (err.status === 403 || err.code === 'signed-out') throw err; /* the section says the name could not be read */ }
     let instances = null;
     try { [instances] = await get('instances'); } catch (err) { if (err.status === 403 || err.code === 'signed-out') throw err; }
     let limitRows = [], limitsRefused = false;