diff --git a/src/components/areas/AreasView.tsx b/src/components/areas/AreasView.tsx
index 40ff800..7e33cf3 100644
--- a/src/components/areas/AreasView.tsx
+++ b/src/components/areas/AreasView.tsx
@@ -40,6 +40,7 @@ export function AreasView() {
   const [loadingList, setLoadingList] = useState(true);
 
   const totalPages = Math.max(1, totalPaginas);
+  const isFiltering = filterNome.trim().length > 0;
 
   useEffect(() => {
     let cancelled = false;
@@ -262,7 +263,7 @@ export function AreasView() {
       </div>
 
       <div className="flex-1 overflow-auto p-3 md:p-6">
-        {!loadingList && areasList.length === 0 && totalRegistros === 0 ? (
+        {!loadingList && totalRegistros === 0 && !isFiltering ? (
           <Card className="max-w-2xl mx-auto mt-12">
             <CardHeader>
               <CardTitle className="flex items-center gap-2">
@@ -297,6 +298,12 @@ export function AreasView() {
                         Carregando...
                       </TableCell>
                     </TableRow>
+                  ) : totalRegistros === 0 ? (
+                    <TableRow>
+                      <TableCell colSpan={2} className="text-center text-muted-foreground py-8">
+                        Nenhum resultado para o filtro {filterNome.trim() ? `"${filterNome.trim()}"` : "atual"}.
+                      </TableCell>
+                    </TableRow>
                   ) : (
                     areasList.map((item) => (
                       <TableRow key={item.id}>
diff --git a/src/components/audio/AudioView.tsx b/src/components/audio/AudioView.tsx
index 15315c7..4d9a905 100644
--- a/src/components/audio/AudioView.tsx
+++ b/src/components/audio/AudioView.tsx
@@ -14,6 +14,7 @@ import {
   SelectValue,
 } from "@/components/ui/select";
 import { useToast } from "@/hooks/use-toast";
+import { audioGenerationService } from "@/services/audioGeneration";
 
 const SUPPORTED_FORMATS = ['flac', 'm4a', 'mp3', 'mp4', 'mpeg', 'mpga', 'oga', 'ogg', 'wav', 'webm'];
 const MAX_FILE_SIZE = 25 * 1024 * 1024; // 25 MB
@@ -186,19 +187,23 @@ export const AudioView = () => {
     }, 2000);
   };
 
-  const handleDownloadAudio = (audio: GeneratedAudio) => {
-    // In real implementation, download the actual audio file
-    const a = document.createElement('a');
-    a.href = audio.audioUrl;
-    a.download = `audio_${audio.voiceLabel}_${new Date(audio.timestamp).getTime()}.mp3`;
-    document.body.appendChild(a);
-    a.click();
-    document.body.removeChild(a);
-    
-    toast({
-      title: "Download iniciado",
-      description: "O arquivo de áudio está sendo baixado.",
-    });
+  const handleDownloadAudio = async (audio: GeneratedAudio) => {
+    const filename = `audio_${audio.voiceLabel}_${new Date(audio.timestamp).getTime()}.mp3`;
+    try {
+      await audioGenerationService.downloadAudioFile(audio.audioUrl, filename);
+      toast({
+        title: "Download iniciado",
+        description: "O arquivo de áudio está sendo baixado.",
+      });
+    } catch (error: unknown) {
+      const message =
+        error && typeof error === "object" && "message" in error ? String((error as { message: string }).message) : "Não foi possível baixar o áudio.";
+      toast({
+        title: "Erro ao baixar",
+        description: message,
+        variant: "destructive",
+      });
+    }
   };
 
   const handleDeleteAudio = (audioId: string) => {
@@ -482,10 +487,11 @@ export const AudioView = () => {
                     </div>
                     <div className="flex gap-2">
                       <Button 
+                        type="button"
                         size="sm" 
                         variant="outline" 
                         className="gap-1"
-                        onClick={() => handleDownloadAudio(generatedAudio)}
+                        onClick={() => void handleDownloadAudio(generatedAudio)}
                       >
                         <Download className="w-3 h-3" />
                         Baixar MP3
@@ -658,9 +664,10 @@ export const AudioView = () => {
                         </div>
                         <div className="flex gap-2 shrink-0">
                           <Button 
+                            type="button"
                             size="sm" 
                             variant="outline"
-                            onClick={() => handleDownloadAudio(item)}
+                            onClick={() => void handleDownloadAudio(item)}
                           >
                             <Download className="w-3 h-3" />
                           </Button>
diff --git a/src/components/audio/GenerationView.tsx b/src/components/audio/GenerationView.tsx
index 8444f7f..793bf48 100644
--- a/src/components/audio/GenerationView.tsx
+++ b/src/components/audio/GenerationView.tsx
@@ -134,18 +134,23 @@ export const GenerationView = () => {
     }
   };
 
-  const handleDownloadAudio = (audio: AudioRecord) => {
-    const a = document.createElement('a');
-    a.href = audio.audio_url;
-    a.download = `audio_${audio.voice}_${new Date(audio.created_at).getTime()}.mp3`;
-    document.body.appendChild(a);
-    a.click();
-    document.body.removeChild(a);
-
-    toast({
-      title: "Download iniciado",
-      description: "O arquivo de áudio está sendo baixado.",
-    });
+  const handleDownloadAudio = async (audio: AudioRecord) => {
+    const filename = `audio_${audio.voice}_${new Date(audio.created_at).getTime()}.mp3`;
+    try {
+      await audioGenerationService.downloadAudioFile(audio.audio_url, filename);
+      toast({
+        title: "Download iniciado",
+        description: "O arquivo de áudio está sendo baixado.",
+      });
+    } catch (error: unknown) {
+      const message =
+        error && typeof error === "object" && "message" in error ? String((error as { message: string }).message) : "Não foi possível baixar o áudio.";
+      toast({
+        title: "Erro ao baixar",
+        description: message,
+        variant: "destructive",
+      });
+    }
   };
 
   const handleDeleteAudio = async (audioId: string) => {
@@ -290,10 +295,11 @@ export const GenerationView = () => {
                     </div>
                     <div className="flex gap-2">
                       <Button
+                        type="button"
                         size="sm"
                         variant="outline"
                         className="gap-1"
-                        onClick={() => handleDownloadAudio(lastGeneratedAudio)}
+                        onClick={() => void handleDownloadAudio(lastGeneratedAudio)}
                       >
                         <Download className="w-3 h-3" />
                         Baixar
@@ -385,9 +391,10 @@ export const GenerationView = () => {
                               </div>
                               <div className="flex gap-2">
                                 <Button
+                                  type="button"
                                   size="sm"
                                   variant="ghost"
-                                  onClick={() => handleDownloadAudio(audio)}
+                                  onClick={() => void handleDownloadAudio(audio)}
                                 >
                                   <Download className="w-4 h-4" />
                                 </Button>
diff --git a/src/components/chat/ChatMessage.tsx b/src/components/chat/ChatMessage.tsx
index ce829c4..c7a4007 100644
--- a/src/components/chat/ChatMessage.tsx
+++ b/src/components/chat/ChatMessage.tsx
@@ -1,4 +1,5 @@
 import { Bot, User, Copy, File } from "lucide-react";
+import ReactMarkdown from "react-markdown";
 import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { useState } from "react";
@@ -53,7 +54,7 @@ export const ChatMessage = ({ role, content, model, attachments }: ChatMessagePr
         </div>
       )}
 
-      <div className={`flex-1 max-w-3xl space-y-1 md:space-y-2 ${isAssistant ? "" : "flex flex-col items-end"}`}>
+      <div className={`flex-1 max-w-4xl space-y-1 md:space-y-2 ${isAssistant ? "" : "flex flex-col items-end"}`}>
         {/* Attachments */}
         {attachments && attachments.length > 0 && (
           <div className="flex flex-wrap gap-2 mb-2">
@@ -73,15 +74,19 @@ export const ChatMessage = ({ role, content, model, attachments }: ChatMessagePr
         )}
 
         <div
-          className={`inline-block px-3 md:px-4 py-2 md:py-3 rounded-xl ${
+          className={`inline-block max-w-[90%] px-3 md:px-4 py-2 md:py-3 rounded-xl break-words ${
             isAssistant
-              ? "bg-card border border-border"
+              ? "bg-card border border-border text-foreground"
               : "bg-gradient-to-br from-primary to-secondary text-primary-foreground"
           }`}
         >
-          <p className={`text-sm md:text-base leading-relaxed ${isAssistant ? "text-foreground" : "text-white"}`}>
-            {content}
-          </p>
+          {isAssistant ? (
+            <div className="prose prose-sm md:prose-base prose-neutral dark:prose-invert max-w-none prose-headings:font-semibold prose-p:leading-relaxed">
+              <ReactMarkdown>{content}</ReactMarkdown>
+            </div>
+          ) : (
+            <p className="text-sm md:text-base leading-relaxed text-white">{content}</p>
+          )}
         </div>
 
         {showActions && (
diff --git a/src/components/parecer-juridico/ParecerJuridicoDetailView.tsx b/src/components/parecer-juridico/ParecerJuridicoDetailView.tsx
index 28ca26a..8474070 100644
--- a/src/components/parecer-juridico/ParecerJuridicoDetailView.tsx
+++ b/src/components/parecer-juridico/ParecerJuridicoDetailView.tsx
@@ -133,8 +133,9 @@ export function ParecerJuridicoDetailView() {
             new Date(a.created_at.replace(" ", "T")).getTime() -
             new Date(b.created_at.replace(" ", "T")).getTime()
         );
+        const nonEmptyMessages = sorted.filter((m) => (m.content ?? "").trim().length > 0);
         setMessages(
-          sorted.map((m) => ({
+          nonEmptyMessages.map((m) => ({
             id: m.id,
             role: m.role,
             content: m.content,
diff --git a/src/components/parecer-juridico/ParecerJuridicoFormView.tsx b/src/components/parecer-juridico/ParecerJuridicoFormView.tsx
index c366f11..90a325c 100644
--- a/src/components/parecer-juridico/ParecerJuridicoFormView.tsx
+++ b/src/components/parecer-juridico/ParecerJuridicoFormView.tsx
@@ -155,18 +155,32 @@ export function ParecerJuridicoFormView() {
       <div className="flex-1 overflow-auto p-3 md:p-6">
         <div className="max-w-4xl mx-auto flex flex-col gap-6">
           <div className="space-y-2">
-            <Label htmlFor="titulo-parecer">Título do parecer</Label>
+            <Label htmlFor="titulo-parecer" className="flex flex-wrap items-baseline gap-1">
+              <span>Título do parecer</span>
+              <span className="text-destructive font-semibold" aria-hidden>
+                *
+              </span>
+              <span className="sr-only">obrigatório</span>
+            </Label>
             <Input
               id="titulo-parecer"
               value={tituloParecer}
               onChange={(e) => setTituloParecer(e.target.value)}
               placeholder="Ex.: Parecer sobre contrato de prestação de serviços"
               className="w-full"
+              required
+              aria-required="true"
             />
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="area">Área</Label>
+            <Label htmlFor="area" className="flex flex-wrap items-baseline gap-1">
+              <span>Área</span>
+              <span className="text-destructive font-semibold" aria-hidden>
+                *
+              </span>
+              <span className="sr-only">obrigatório</span>
+            </Label>
             <Select value={areaId || "none"} onValueChange={(v) => setAreaId(v === "none" ? "" : v)} disabled={areasLoading}>
               <SelectTrigger id="area" className="w-full">
                 <SelectValue
@@ -190,7 +204,7 @@ export function ParecerJuridicoFormView() {
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="prompt">Prompt</Label>
+            <Label htmlFor="prompt">Prompt da base</Label>
             <Select
               value={promptId || "none"}
               onValueChange={(v) => setPromptId(v === "none" ? "" : v)}
@@ -221,29 +235,45 @@ export function ParecerJuridicoFormView() {
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="conteudo-prompt">Conteúdo do prompt (editável)</Label>
+            <Label htmlFor="conteudo-prompt" className="flex flex-wrap items-baseline gap-1">
+              <span>Conteúdo do prompt</span>
+              <span className="text-destructive font-semibold" aria-hidden>
+                *
+              </span>
+              <span className="sr-only">obrigatório</span>
+            </Label>
             <Textarea
               id="conteudo-prompt"
               value={conteudoPrompt}
               onChange={(e) => setConteudoPrompt(e.target.value)}
-              placeholder="Selecione um prompt acima ou edite o conteúdo aqui. Este valor será enviado na geração do parecer."
+              placeholder="Selecione um prompt acima ou edite o conteúdo aqui."
               className="min-h-[200px] resize-y w-full"
+              required
+              aria-required="true"
             />
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="instrucao">Instrução</Label>
+            <Label htmlFor="instrucao" className="flex flex-wrap items-baseline gap-1">
+              <span>Instrução</span>
+              <span className="text-destructive font-semibold" aria-hidden>
+                *
+              </span>
+              <span className="sr-only">obrigatório</span>
+            </Label>
             <Textarea
               id="instrucao"
               value={instrucao}
               onChange={(e) => setInstrucao(e.target.value)}
               placeholder="Instruções adicionais para a geração do parecer..."
               className="min-h-[100px] resize-y w-full"
+              required
+              aria-required="true"
             />
           </div>
 
           <div className="space-y-2">
-            <Label htmlFor="anexo">Anexo (máx. 1 arquivo)</Label>
+            <Label htmlFor="anexo">Anexo</Label>
             <p className="text-xs text-muted-foreground">Formatos permitidos: PDF, TXT.</p>
             <div className="flex flex-col gap-2 w-full">
               <div className="flex items-center gap-2 w-full min-h-10 rounded-md border border-input bg-background px-3 py-2">
diff --git a/src/components/prompts/PromptsView.tsx b/src/components/prompts/PromptsView.tsx
index 0c46788..7293796 100644
--- a/src/components/prompts/PromptsView.tsx
+++ b/src/components/prompts/PromptsView.tsx
@@ -183,10 +183,12 @@ export const PromptsView = () => {
               </CardDescription>
             </CardHeader>
             <CardContent>
-              <Button onClick={() => navigate("/codex/prompts/novo")}>
-                <Plus className="w-4 h-4 mr-2" />
-                Novo prompt
-              </Button>
+              <div className="flex flex-col sm:flex-row gap-2 sm:items-center">
+                <Button onClick={() => navigate("/codex/prompts/novo")}>
+                  <Plus className="w-4 h-4 mr-2" />
+                  Novo prompt
+                </Button>
+              </div>
             </CardContent>
           </Card>
         ) : (
@@ -207,10 +209,10 @@ export const PromptsView = () => {
                         Carregando...
                       </TableCell>
                     </TableRow>
-                  ) : promptsList.length === 0 ? (
+                  ) : totalRegistros === 0 ? (
                     <TableRow>
                       <TableCell colSpan={3} className="text-center text-muted-foreground py-10 text-base">
-                        Não há resultados.
+                        {hasActiveFilters ? "Nenhum prompt encontrado para os filtros selecionados." : "Não há resultados."}
                       </TableCell>
                     </TableRow>
                   ) : (
diff --git a/src/services/areas.ts b/src/services/areas.ts
index 520423a..71b779b 100644
--- a/src/services/areas.ts
+++ b/src/services/areas.ts
@@ -135,21 +135,34 @@ class AreasService {
       throw new Error("ID da área é obrigatório");
     }
 
+    const idEnc = encodeURIComponent(id.trim());
     const body: EditarAreaBody = {
       nome: nome.trim(),
       descricao: (descricao ?? "").trim(),
     };
 
-    const response = await apiService.put<EditarAreaSuccessResponse | EditarAreaErrorResponse>(
-      `https://prod-hgtx-intelligence-n8n.hgtx.com.br/webhook/codex/parecer/area/${id}`,
+    /** Mesmo prefixo de webhook que o fluxo n8n (UUID) usado nos endpoints de "parecer/areas". */
+    const url = `https://prod-hgtx-intelligence-n8n.hgtx.com.br/webhook/fd073ec0-81ab-4681-8acd-b0da71f6ad30/codex/parecer/area/${idEnc}`;
+
+    const response = await apiService.put<
+      EditarAreaSuccessResponse | EditarAreaErrorResponse | (EditarAreaSuccessResponse | EditarAreaErrorResponse)[]
+    >(
+      url,
       body
     );
 
-    if (response.data.success === false) {
-      throw new Error((response.data as EditarAreaErrorResponse).message ?? "Erro ao editar área");
+    const raw = response.data;
+    const data = Array.isArray(raw) ? raw[0] : raw;
+
+    if (!data || typeof data !== "object" || !("success" in data)) {
+      throw new Error("Resposta inválida ao editar área");
     }
 
-    return response.data as EditarAreaSuccessResponse;
+    if (data.success === false) {
+      throw new Error((data as EditarAreaErrorResponse).message ?? "Erro ao editar área");
+    }
+
+    return data as EditarAreaSuccessResponse;
   }
 
   async deletar(id: string): Promise<DeletarAreaSuccessResponse> {
diff --git a/src/services/audioGeneration.ts b/src/services/audioGeneration.ts
index c2a4073..075c12d 100644
--- a/src/services/audioGeneration.ts
+++ b/src/services/audioGeneration.ts
@@ -180,6 +180,89 @@ class AudioGenerationService {
       this.toApiError(error, 'Erro ao deletar áudio');
     }
   }
+
+  /**
+   * Baixa o arquivo no navegador (sem navegar para a URL).
+   * Usa blob local + <a download> — necessário porque links cross-origin ignoram `download` e abrem a URL.
+   */
+  async downloadAudioFile(audioUrl: string, filename?: string): Promise<void> {
+    const urlTrim = audioUrl?.trim();
+    if (!urlTrim) {
+      throw new Error('URL do áudio inválida');
+    }
+
+    const safeName = (filename || `audio_${Date.now()}.mp3`).replace(/[/\\?%*:|"<>]/g, '_');
+
+    let sameOrigin = false;
+    try {
+      const u = new URL(urlTrim, typeof window !== 'undefined' ? window.location.href : undefined);
+      sameOrigin = typeof window !== 'undefined' && u.origin === window.location.origin;
+    } catch {
+      sameOrigin = false;
+    }
+
+    const fetchBlob = async (): Promise<Blob> => {
+      const response = await fetch(urlTrim, {
+        mode: 'cors',
+        credentials: sameOrigin ? 'include' : 'omit',
+        cache: 'no-store',
+      });
+      if (!response.ok) {
+        throw new Error(`Falha ao baixar (HTTP ${response.status})`);
+      }
+      return response.blob();
+    };
+
+    const xhrBlob = (): Promise<Blob> =>
+      new Promise((resolve, reject) => {
+        const xhr = new XMLHttpRequest();
+        xhr.open('GET', urlTrim, true);
+        xhr.responseType = 'blob';
+        xhr.onload = () => {
+          if (xhr.status >= 200 && xhr.status < 300) {
+            resolve(xhr.response);
+          } else {
+            reject(new Error(`Falha ao baixar (HTTP ${xhr.status})`));
+          }
+        };
+        xhr.onerror = () => reject(new Error('Falha de rede ao baixar o áudio'));
+        xhr.send();
+      });
+
+    let blob: Blob;
+    try {
+      blob = await fetchBlob();
+    } catch (e1) {
+      try {
+        blob = await xhrBlob();
+      } catch (e2) {
+        console.error('downloadAudioFile:', e1, e2);
+        throw new Error(
+          'Não foi possível baixar o áudio. Se o arquivo estiver em outro domínio, é preciso CORS liberando GET para esta origem.'
+        );
+      }
+    }
+
+    const needsMimeFix =
+      !blob.type ||
+      blob.type === 'application/octet-stream' ||
+      blob.type === 'text/html';
+    const typedBlob = needsMimeFix ? new Blob([blob], { type: 'audio/mpeg' }) : blob;
+
+    const objectUrl = URL.createObjectURL(typedBlob);
+    try {
+      const a = document.createElement('a');
+      a.href = objectUrl;
+      a.download = safeName.endsWith('.mp3') ? safeName : `${safeName}.mp3`;
+      a.style.display = 'none';
+      a.rel = 'noopener';
+      document.body.appendChild(a);
+      a.click();
+      document.body.removeChild(a);
+    } finally {
+      URL.revokeObjectURL(objectUrl);
+    }
+  }
 }
 
 export const audioGenerationService = new AudioGenerationService();
diff --git a/src/services/promptsApi.ts b/src/services/promptsApi.ts
index 10dc2e4..ef6623e 100644
--- a/src/services/promptsApi.ts
+++ b/src/services/promptsApi.ts
@@ -151,25 +151,35 @@ class PromptsService {
       throw new Error("ID do prompt é obrigatório");
     }
 
-    const response = await apiService.put<EditarPromptSuccessResponse | EditarPromptErrorResponse>(
-      `https://prod-hgtx-intelligence-n8n.hgtx.com.br/webhook/codex/parecer/prompt/editar/${id}`,
-      {
-        titulo: (body.titulo ?? "").trim(),
-        descricao: (body.descricao ?? "").trim(),
-        area_id: body.area_id.trim(),
-        conteudo: (body.conteudo ?? "").trim(),
-      }
-    );
+    const idEnc = encodeURIComponent(id.trim());
+    /** Mesmo prefixo de webhook n8n usado em edição de área (`areas.editar`). */
+    const url = `https://prod-hgtx-intelligence-n8n.hgtx.com.br/webhook/fd073ec0-81ab-4681-8acd-b0da71f6ad30/codex/parecer/prompt/${idEnc}`;
 
-    if (response.data.success === false) {
-      const err = response.data as EditarPromptErrorResponse;
+    const response = await apiService.put<
+      EditarPromptSuccessResponse | EditarPromptErrorResponse | (EditarPromptSuccessResponse | EditarPromptErrorResponse)[]
+    >(url, {
+      titulo: (body.titulo ?? "").trim(),
+      descricao: (body.descricao ?? "").trim(),
+      area_id: body.area_id.trim(),
+      conteudo: (body.conteudo ?? "").trim(),
+    });
+
+    const raw = response.data;
+    const data = Array.isArray(raw) ? raw[0] : raw;
+
+    if (!data || typeof data !== "object" || !("success" in data)) {
+      throw new Error("Resposta inválida ao editar prompt");
+    }
+
+    if (data.success === false) {
+      const err = data as EditarPromptErrorResponse;
       const msg = err.missing_fields?.length
         ? `Preencha: ${err.missing_fields.join(", ")}`
         : "Erro ao editar prompt.";
       throw new Error(msg);
     }
 
-    return response.data as EditarPromptSuccessResponse;
+    return data as EditarPromptSuccessResponse;
   }
 }