diff --git a/agents.md b/agents.md
index 341fdc8..412e509 100644
--- a/agents.md
+++ b/agents.md
@@ -42,6 +42,7 @@
 - Relatórios, dashboards e páginas administrativas utilizam `AppShell`, garantindo header/sidebar consistentes.
   - Use `SiteHeader` no `header` do `AppShell` para título/lead e ações.
   - O conteúdo deve ficar dentro de `<div className="mx-auto w-full max-w-6xl px-4 pb-12 lg:px-6">`.
+  - Persistir filtro global de empresa com `usePersistentCompanyFilter` (localStorage) para manter consistência entre relatórios.
 
 ## Entregas recentes
 - Exportações CSV (Backlog, Canais, CSAT, SLA e Horas por cliente) com parâmetros de período.
diff --git a/convex/tickets.ts b/convex/tickets.ts
index 42ae8f8..6844dbb 100644
--- a/convex/tickets.ts
+++ b/convex/tickets.ts
@@ -738,6 +738,93 @@ export const addComment = mutation({
     });
     // bump ticket updatedAt
     await ctx.db.patch(args.ticketId, { updatedAt: now });
+    
+    // If public comment, attempt to notify requester by e-mail (best-effort)
+    if (args.visibility === "PUBLIC") {
+      try {
+        const smtp = {
+          host: process.env.SMTP_ADDRESS!,
+          port: Number(process.env.SMTP_PORT ?? 465),
+          username: process.env.SMTP_USERNAME!,
+          password: process.env.SMTP_PASSWORD!,
+          from: process.env.MAILER_SENDER_EMAIL || "no-reply@example.com",
+        }
+        if (smtp.host && smtp.username && smtp.password) {
+          const requester = await ctx.db.get(ticketDoc.requesterId)
+          const to = (requester as any)?.email as string | undefined
+          if (to) {
+            // Minimal SMTP sender (AUTH LOGIN over implicit TLS)
+            const tls = await import("tls")
+            const b64 = (input: string) => Buffer.from(input, "utf8").toString("base64")
+            const sendSmtpMail = async (cfg: { host: string; port: number; username: string; password: string; from: string }, toAddr: string, subject: string, html: string) => {
+              return new Promise<void>((resolve, reject) => {
+                const socket = tls.connect(cfg.port, cfg.host, { rejectUnauthorized: false }, () => {
+                  let buffer = ""
+                  const send = (line: string) => socket.write(line + "\r\n")
+                  const wait = (expected: string | RegExp) =>
+                    new Promise<void>((res) => {
+                      const onData = (data: Buffer) => {
+                        buffer += data.toString()
+                        const lines = buffer.split(/\r?\n/)
+                        const last = lines.filter(Boolean).slice(-1)[0] ?? ""
+                        if (typeof expected === "string" ? last.startsWith(expected) : expected.test(last)) {
+                          socket.removeListener("data", onData)
+                          res()
+                        }
+                      }
+                      socket.on("data", onData)
+                      socket.on("error", reject)
+                    })
+                  ;(async () => {
+                    await wait(/^220 /)
+                    send(`EHLO ${cfg.host}`)
+                    await wait(/^250-/)
+                    await wait(/^250 /)
+                    send("AUTH LOGIN")
+                    await wait(/^334 /)
+                    send(b64(cfg.username))
+                    await wait(/^334 /)
+                    send(b64(cfg.password))
+                    await wait(/^235 /)
+                    const fromAddr = (cfg.from.match(/<\s*([^>\s]+)\s*>/)?.[1] ?? cfg.from)
+                    send(`MAIL FROM:<${fromAddr}>`)
+                    await wait(/^250 /)
+                    send(`RCPT TO:<${toAddr}>`)
+                    await wait(/^250 /)
+                    send("DATA")
+                    await wait(/^354 /)
+                    const headers = [
+                      `From: ${cfg.from}`,
+                      `To: ${toAddr}`,
+                      `Subject: ${subject}`,
+                      "MIME-Version: 1.0",
+                      "Content-Type: text/html; charset=UTF-8",
+                    ].join("\r\n")
+                    send(headers + "\r\n\r\n" + html + "\r\n.")
+                    await wait(/^250 /)
+                    send("QUIT")
+                    socket.end()
+                    resolve()
+                  })().catch(reject)
+                })
+                socket.on("error", reject)
+              })
+            }
+            const ticketRef = (ticketDoc as any).reference ? `#${(ticketDoc as any).reference}` : "Chamado"
+            const subject = `${ticketRef} atualizado: novo comentário público`
+            const body = `
+              <p>Olá,</p>
+              <p>Seu chamado <strong>${ticketRef}</strong> recebeu um novo comentário:</p>
+              <blockquote style="border-left: 3px solid #e5e7eb; margin: 8px 0; padding: 8px 12px; color: #374151;">${args.body}</blockquote>
+              <p>Atenciosamente,<br/>Equipe de suporte</p>
+            `
+            await sendSmtpMail(smtp, to, subject, body)
+          }
+        }
+      } catch (error) {
+        console.error("Failed to send public comment notification", error)
+      }
+    }
     return id;
   },
 });
diff --git a/src/app/dashboard/page.tsx b/src/app/dashboard/page.tsx
index 9f35c60..69ce147 100644
--- a/src/app/dashboard/page.tsx
+++ b/src/app/dashboard/page.tsx
@@ -1,22 +1,31 @@
+import dynamic from "next/dynamic"
 import { AppShell } from "@/components/app-shell"
 import { SectionCards } from "@/components/section-cards"
 import { SiteHeader } from "@/components/site-header"
 import { RecentTicketsPanel } from "@/components/tickets/recent-tickets-panel"
 import { TicketQueueSummaryCards } from "@/components/tickets/ticket-queue-summary"
 import { ChartAreaInteractive } from "@/components/chart-area-interactive"
-
-export default function Dashboard() {
-  return (
-    <AppShell
-      header={
-        <SiteHeader
-          title="Central de operações"
-          lead="Monitoramento em tempo real"
-          secondaryAction={<SiteHeader.SecondaryButton>Abrir ticket</SiteHeader.SecondaryButton>}
-          primaryAction={<SiteHeader.PrimaryButton>Modo play</SiteHeader.PrimaryButton>}
-        />
-      }
-    >
+
+const NewTicketDialog = dynamic(
+  () =>
+    import("@/components/tickets/new-ticket-dialog").then((module) => ({
+      default: module.NewTicketDialog,
+    })),
+  { ssr: false }
+)
+
+export default function Dashboard() {
+  return (
+    <AppShell
+      header={
+        <SiteHeader
+          title="Central de operações"
+          lead="Monitoramento em tempo real"
+          secondaryAction={<SiteHeader.SecondaryButton>Modo play</SiteHeader.SecondaryButton>}
+          primaryAction={<NewTicketDialog />}
+        />
+      }
+    >
       <SectionCards />
       <div className="grid gap-6 px-4 lg:grid-cols-[minmax(0,1.1fr)_minmax(0,0.9fr)] lg:px-6 lg:[&>*]:min-w-0">
         <ChartAreaInteractive />