feat: async background chat, performance scaling, and dead code cleanup

Async chat processing eliminates 504 timeouts - POST returns immediately,
backend processes in background, frontend polls for results with timestamps.
Scale to ~12 simultaneous chats via 8 uvicorn workers + 16-thread executor.
Parallelized MCP data collection, 2h session cache, 5min tool timeout.
Full dead code cleanup across backend, frontend, MCP, docker, and nginx.

frontend/index.html

@@ -14,6 +14,9 @@
   --gn:#16a34a;--gnl:rgba(22,163,74,.08);--rd:#dc2626;--rdl:rgba(220,38,38,.06);
   --bl:#2563eb;--bll:rgba(37,99,235,.06);--yl:#ca8a04;--yll:rgba(202,138,4,.06);
   --pp:#7c3aed;--ppl:rgba(124,58,237,.06);
+  --ok:#16a34a;--w:#ca8a04;--err:#dc2626;
+  --tx2:#78716c;--p:#1c1917;--pl:rgba(199,70,52,.06);
+  --b2:#ddd9d2;--b3:#c5c0b8;
   --r:12px;--rl:16px;--rr:20px;
   --sh1:0 1px 2px rgba(28,25,23,.04),0 1px 3px rgba(28,25,23,.06);
   --sh2:0 4px 6px -1px rgba(28,25,23,.05),0 2px 4px -2px rgba(28,25,23,.04);
@@ -143,6 +146,7 @@ tbody tr:last-child td{border-bottom:none}
 .cm-user .cb strong{color:#ffe0db}
 .cb{max-width:72%;padding:.7rem .95rem;border-radius:var(--rl) var(--rl) var(--rl) 6px;background:var(--bg1);font-size:.82rem;
   line-height:1.6;border:1px solid var(--bd);white-space:pre-wrap;box-shadow:var(--sh1)}
+.cm-ts{font-size:.65rem;color:#999;margin-top:3px;opacity:.7}
 .cb code{font-family:var(--fm);font-size:.73rem;background:var(--bg3);padding:.12rem .3rem;border-radius:5px}
 .cb strong{color:var(--ac)}
 .ch-i{display:flex;gap:.45rem;padding:.7rem .85rem;background:var(--bg1);border:1px solid var(--bd);border-top:none;
@@ -212,7 +216,7 @@ const V='1.1';
 const LOGO_W=`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" width="26" height="26" style="flex-shrink:0"><rect x="2" y="5" width="32" height="26" rx="13" ry="13" fill="rgba(255,255,255,0.12)" stroke="#fff" stroke-width="2"/><rect x="11" y="11" width="14" height="14" rx="4" fill="#fff" opacity="0.95"/><circle cx="15" cy="17" r="2" fill="#C74634"/><circle cx="21" cy="17" r="2" fill="#C74634"/><circle cx="15" cy="16.7" r="0.7" fill="#fff"/><circle cx="21" cy="16.7" r="0.7" fill="#fff"/><rect x="14" y="21" width="8" height="1.5" rx="0.75" fill="#C74634" opacity="0.6"/><line x1="18" y1="11" x2="18" y2="6" stroke="#fff" stroke-width="1.2" stroke-linecap="round"/><circle cx="18" cy="5.5" r="1.5" fill="#fff" opacity="0.9"/><line x1="11" y1="18" x2="6" y2="18" stroke="#fff" stroke-width="1" stroke-linecap="round" opacity="0.7"/><line x1="25" y1="18" x2="30" y2="18" stroke="#fff" stroke-width="1" stroke-linecap="round" opacity="0.7"/><circle cx="5.5" cy="18" r="1" fill="#fff" opacity="0.7"/><circle cx="30.5" cy="18" r="1" fill="#fff" opacity="0.7"/></svg>`;
 const LOGO_R=`<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 36 36" width="52" height="52"><rect x="2" y="5" width="32" height="26" rx="13" ry="13" fill="rgba(199,70,52,0.08)" stroke="#C74634" stroke-width="1.8"/><rect x="11" y="11" width="14" height="14" rx="4" fill="#fff" stroke="#C74634" stroke-width="0.4"/><circle cx="15" cy="17" r="2" fill="#C74634"/><circle cx="21" cy="17" r="2" fill="#C74634"/><circle cx="15" cy="16.7" r="0.7" fill="#fff"/><circle cx="21" cy="16.7" r="0.7" fill="#fff"/><rect x="14" y="21" width="8" height="1.5" rx="0.75" fill="#C74634" opacity="0.6"/><line x1="18" y1="11" x2="18" y2="6" stroke="#C74634" stroke-width="1.2" stroke-linecap="round"/><circle cx="18" cy="5.5" r="1.5" fill="#C74634" opacity="0.25" stroke="#C74634" stroke-width="0.7"/><line x1="11" y1="18" x2="6" y2="18" stroke="#C74634" stroke-width="1" stroke-linecap="round" opacity="0.4"/><line x1="25" y1="18" x2="30" y2="18" stroke="#C74634" stroke-width="1" stroke-linecap="round" opacity="0.4"/><circle cx="5.5" cy="18" r="1" fill="#C74634" opacity="0.35"/><circle cx="30.5" cy="18" r="1" fill="#C74634" opacity="0.35"/></svg>`;
 
-const S={user:null,token:null,tab:'chat',msgs:[],sid:null,reports:[],ociCfg:[],genaiCfg:[],adbCfg:[],mcpSvr:[],users:[],auditLogs:[],models:{},regions:[],embModels:{},selGenai:'',expData:null,editing:null,
+const S={user:null,token:null,tab:'chat',msgs:[],sid:null,reports:[],ociCfg:[],genaiCfg:[],adbCfg:[],mcpSvr:[],users:[],models:{},regions:[],embModels:{},expData:null,editing:null,
   chatModel:'',chatOci:'',chatRegion:'',chatCompartment:'',
   chatParams:{temperature:1,max_tokens:6000,top_p:0.95,top_k:1,frequency_penalty:0,presence_penalty:0},chatParamsOpen:false,chatUseTools:true,
   chatPrompts:[],editingPrompt:null,trackingReportId:null,ociRegions:{},rptSelRegions:[],rptRegionsOpen:false,rptRegionFilter:'',
@@ -240,7 +244,7 @@ async function loadData(){try{
   if(S.user.role==='admin'){try{S.users=await $api('/users')}catch(e){}}
   try{S.cisVer=await $api('/cis-engine/version')}catch(e){}
 }catch(e){console.error(e)}}
-function R(){document.getElementById('app').innerHTML=S.user?rApp():rLogin();bind();if(S.editing?.type==='mcp')setTimeout(mcpTypeFields,0)}
+function R(){document.getElementById('app').innerHTML=S.user?rApp():rLogin();if(S.editing?.type==='mcp')setTimeout(mcpTypeFields,0)}
 function switchTab(t){S.tab=t;S.expData=null;R();if(t==='audit'&&S.user.role==='admin')loadAudit();if(t==='downloads')refreshDl();
   const tm={'oci-config':'oci','genai':'genai','adb':'adb','mcp':'mcp'};if(tm[t])setTimeout(()=>refreshCLogs(tm[t]),100)}
 
@@ -284,7 +288,7 @@ function rPg(){switch(S.tab){case'chat':return rChat();case'explorer':return rEx
 /* ── Chat ── */
 function rChat(){
   const ms=S.msgs.length===0?'<div class="emp"><div class="eic">🤖</div><p>Inicie uma conversa com o agente.</p><p style="font-size:.74rem;margin-top:.35rem">Selecione um modelo para começar.</p></div>'
-    :S.msgs.map(m=>`<div class="cm cm-${m.r}"><div class="cb">${fm(m.c)}</div></div>`).join('');
+    :S.msgs.map(m=>`<div class="cm cm-${m.r}"><div class="cb">${fm(m.c)}</div>${m.t?`<div class="cm-ts">${m.t}</div>`:''}</div>`).join('');
   // Build custom dropdown items
   // Skip non-chat models: Codex (completions only), Image, Audio, Guard, ProtectAI, GPT-oss, Pro (Responses API only)
   const skip=new Set(['openai.gpt-image-1','openai.gpt-image-1.5','openai.gpt-audio','meta.llama-guard-4-12b','protectai.deberta-v3-base-prompt-injection-v2',
@@ -354,6 +358,7 @@ function addChatFiles(input){for(const f of input.files){if(S.chatFiles.length>=
   if(entry.type==='image'){const r=new FileReader();r.onload=e=>{entry.preview=e.target.result;R()};r.readAsDataURL(f)}
   S.chatFiles.push(entry)}input.value='';R()}
 function rmChatFile(i){S.chatFiles.splice(i,1);R()}
+function tstamp(){const d=new Date();return d.toLocaleTimeString('pt-BR',{hour:'2-digit',minute:'2-digit'})}
 async function sChat(){const el=document.getElementById('chi');const m=el.value.trim();
   if(!m&&!S.chatFiles.length)return;
   if(!S.chatModel){S.msgs.push({r:'assistant',c:'⚠️ Selecione um modelo antes de enviar uma mensagem.'});R();return}
@@ -362,8 +367,7 @@ async function sChat(){const el=document.getElementById('chi');const m=el.value.
   const fileNames=S.chatFiles.map(f=>f.name);
   let userDisplay=m||'';
   if(hasFiles)userDisplay+=(userDisplay?'\n':'')+'📎 '+fileNames.join(', ');
-  S.msgs.push({r:'user',c:userDisplay});R();scCh();
-  // Disable input and show thinking indicator
+  S.msgs.push({r:'user',c:userDisplay,t:tstamp()});R();scCh();
   const btns=document.querySelectorAll('.ch-i .btn');
   el.disabled=true;btns.forEach(b=>{b.disabled=true});
   const sendBtn=btns[btns.length-1];if(sendBtn){sendBtn.dataset.origText=sendBtn.textContent;sendBtn.innerHTML='<span class="spinner" style="width:14px;height:14px;border-width:2px;margin-right:6px"></span>Pensando...'}
@@ -396,12 +400,23 @@ async function sChat(){const el=document.getElementById('chi');const m=el.value.
         body.top_k=S.chatParams.top_k;body.frequency_penalty=S.chatParams.frequency_penalty;body.presence_penalty=S.chatParams.presence_penalty}
       d=await $api('/chat',{method:'POST',body})}
     S.sid=d.session_id;
-    S.msgs=S.msgs.filter(x=>!x.thinking);
-    let resp=d.response;
-    if(d.tools_used&&d.tools_used.length){resp+='\n\n🔧 **Tools utilizadas:** '+d.tools_used.map(t=>t.name).join(', ')}
-    S.msgs.push({r:'assistant',c:resp});R();scCh()}
-  catch(e){S.msgs=S.msgs.filter(x=>!x.thinking);S.msgs.push({r:'assistant',c:'❌ Erro: '+e.message});R()}
+    if(d.status==='processing'&&d.message_id){
+      await pollChatResult(d.message_id)
+    }else{
+      S.msgs=S.msgs.filter(x=>!x.thinking);
+      let resp=d.response;
+      if(d.tools_used&&d.tools_used.length){resp+='\n\n🔧 **Tools utilizadas:** '+d.tools_used.map(t=>t.name).join(', ')}
+      S.msgs.push({r:'assistant',c:resp,t:tstamp()});R();scCh()}}
+  catch(e){S.msgs=S.msgs.filter(x=>!x.thinking);S.msgs.push({r:'assistant',c:'❌ Erro: '+e.message,t:tstamp()});R()}
   finally{el.disabled=false;el.focus();btns.forEach(b=>{b.disabled=false});if(sendBtn)sendBtn.textContent=sendBtn.dataset.origText||'Enviar →'}}
+async function pollChatResult(mid){
+  for(let i=0;i<1200;i++){
+    await new Promise(r=>setTimeout(r,i<10?1000:3000));
+    try{const r=await $api('/chat/'+mid+'/status');
+      if(r.status==='done'){S.msgs=S.msgs.filter(x=>!x.thinking);S.msgs.push({r:'assistant',c:r.content,t:tstamp()});R();scCh();return}
+      if(r.status==='failed'){S.msgs=S.msgs.filter(x=>!x.thinking);S.msgs.push({r:'assistant',c:'❌ '+r.content,t:tstamp()});R();scCh();return}
+    }catch(e){}}
+  S.msgs=S.msgs.filter(x=>!x.thinking);S.msgs.push({r:'assistant',c:'⏰ Timeout: a resposta está demorando muito. Tente novamente.',t:tstamp()});R()}
 function scCh(){setTimeout(()=>{const e=document.getElementById('chm');if(e)e.scrollTop=e.scrollHeight},50)}
 async function clrChat(){if(S.sid)try{await $api('/chat/'+S.sid,{method:'DELETE'})}catch(e){}S.msgs=[];S.sid=null;R()}
 
@@ -513,7 +528,6 @@ ${status}</div></div>`}
 async function cisLoadVersion(){try{S.cisVer=await $api('/cis-engine/version');R()}catch(e){console.error('cisVer',e)}}
 async function cisCheckUpdate(){S.cisCheckResult=null;R();try{S.cisCheckResult=await $api('/cis-engine/check-update');R()}catch(e){alert('Erro ao verificar: '+e.message)}}
 async function cisDoUpdate(){if(!confirm('Atualizar CIS Engine para a versão mais recente do GitHub?'))return;S.cisUpdating=true;R();try{const d=await $api('/cis-engine/update',{method:'POST'});alert(`Atualizado: ${d.old_version} → ${d.new_version}\nPatches aplicados: ${d.patches_applied.join(', ')||'nenhum'}`);S.cisCheckResult=null;S.cisUpdating=false;await cisLoadVersion()}catch(e){S.cisUpdating=false;R();alert('Erro: '+e.message)}}
-function ldRpt(id){const f=document.getElementById('rfr');if(f)f.src=API+'/reports/'+id+'/html'}
 function rptPickRegion(r){S.rptSelRegions.push(r);S.rptRegionFilter='';R()}
 function rptRemoveRegion(r){S.rptSelRegions=S.rptSelRegions.filter(x=>x!==r);R()}
 function rptPickOci(id){S.rptOciVal=id;S.rptOciOpen=false;S.rptOciFilter='';R()}
@@ -1128,7 +1142,6 @@ async function hLogin(){const u=document.getElementById('lu').value,p=document.g
   try{const d=await doLogin(u,p);if(d&&d.mfa_required){document.getElementById('lf').style.display='none';document.getElementById('mfa-s').style.display='block'}}
   catch(e){document.getElementById('le').innerHTML=`<div class="al al-e">${e.message}</div>`}}
 async function hMfa(){try{await doLogin(_lu,_lp,document.getElementById('mfa-c').value)}catch(e){document.getElementById('le').innerHTML=`<div class="al al-e">${e.message}</div>`}}
-function bind(){}
 (async()=>{await checkAuth();R()})();
 </script>
 </body>