diff --git a/ui/web/src/components/layout/app-layout.tsx b/ui/web/src/components/layout/app-layout.tsx
index 6a144484..8a6bacd3 100644
--- a/ui/web/src/components/layout/app-layout.tsx
+++ b/ui/web/src/components/layout/app-layout.tsx
@@ -6,7 +6,7 @@ import { Topbar } from "./topbar";
 import { ErrorBoundary } from "@/components/shared/error-boundary";
 import { useUiStore } from "@/stores/use-ui-store";
 import { useAuthStore } from "@/stores/use-auth-store";
-import { useIsMobile } from "@/hooks/use-media-query";
+import { useIsTablet } from "@/hooks/use-media-query";
 import { cn } from "@/lib/utils";
 
 export function AppLayout() {
@@ -16,7 +16,7 @@ export function AppLayout() {
   const mobileSidebarOpen = useUiStore((s) => s.mobileSidebarOpen);
   const setMobileSidebarOpen = useUiStore((s) => s.setMobileSidebarOpen);
   const connected = useAuthStore((s) => s.connected);
-  const isMobile = useIsMobile();
+  const isMobile = useIsTablet();
 
   return (
     <div className="flex h-dvh overflow-hidden safe-top">
diff --git a/ui/web/src/pages/agents/agent-detail/agent-header.tsx b/ui/web/src/pages/agents/agent-detail/agent-header.tsx
index daf2b96f..5ad42c3e 100644
--- a/ui/web/src/pages/agents/agent-detail/agent-header.tsx
+++ b/ui/web/src/pages/agents/agent-detail/agent-header.tsx
@@ -7,6 +7,7 @@ import type { AgentData } from "@/types/agent";
 import type { HeartbeatConfig } from "@/pages/agents/hooks/use-agent-heartbeat";
 import { useCountdown } from "@/hooks/use-countdown";
 import { agentDisplayName, agentKeyDisplay } from "./agent-display-utils";
+import { cn } from "@/lib/utils";
 
 interface AgentHeaderProps {
   agent: AgentData;
@@ -51,21 +52,29 @@ export function AgentHeader({ agent, heartbeat, onBack, onDelete, onAdvanced, on
             {agent.is_default && (
               <Star className="h-3.5 w-3.5 shrink-0 fill-amber-400 text-amber-400" />
             )}
-            <Badge
-              variant={
-                agent.status === "active"
-                  ? "success"
-                  : agent.status === "summon_failed"
-                    ? "destructive"
-                    : "secondary"
-              }
-              className="text-[10px]"
-            >
-              {agent.status === "summon_failed" ? t("detail.summonFailed") : agent.status}
-            </Badge>
             <Tooltip>
               <TooltipTrigger asChild>
-                <Badge variant="outline" className="text-[10px]">{agent.agent_type}</Badge>
+                <span
+                  className={cn(
+                    "inline-block h-2.5 w-2.5 shrink-0 rounded-full",
+                    agent.status === "active"
+                      ? "bg-emerald-500"
+                      : agent.status === "summon_failed"
+                        ? "bg-destructive"
+                        : "bg-muted-foreground/50",
+                  )}
+                />
+              </TooltipTrigger>
+              <TooltipContent side="bottom" className="text-xs">
+                {agent.status === "summon_failed" ? t("detail.summonFailed") : agent.status}
+              </TooltipContent>
+            </Tooltip>
+            <Tooltip>
+              <TooltipTrigger asChild>
+                <Badge variant="outline" className="text-[10px]">
+                  <span className="hidden sm:inline">{agent.agent_type}</span>
+                  <span className="sm:hidden">{agent.agent_type === "predefined" ? "P" : "O"}</span>
+                </Badge>
               </TooltipTrigger>
               <TooltipContent side="bottom" className="max-w-[260px] text-xs">
                 {agent.agent_type === "predefined" ? t("card.predefinedTooltip") : t("card.openTooltip")}
@@ -78,8 +87,8 @@ export function AgentHeader({ agent, heartbeat, onBack, onDelete, onAdvanced, on
                     variant={selfEvolve ? "default" : "outline"}
                     className={`text-[10px] ${selfEvolve ? "bg-violet-100 text-violet-700 hover:bg-violet-100 dark:bg-violet-900/30 dark:text-violet-300" : "text-muted-foreground"}`}
                   >
-                    <Sparkles className="mr-0.5 h-2.5 w-2.5" />
-                    {selfEvolve ? t("detail.evolving") : t("detail.static")}
+                    <Sparkles className="h-2.5 w-2.5 sm:mr-0.5" />
+                    <span className="hidden sm:inline">{selfEvolve ? t("detail.evolving") : t("detail.static")}</span>
                   </Badge>
                 </TooltipTrigger>
                 <TooltipContent side="bottom" className="max-w-[240px] text-xs">
diff --git a/ui/web/src/pages/agents/agent-detail/heartbeat-logs-dialog.tsx b/ui/web/src/pages/agents/agent-detail/heartbeat-logs-dialog.tsx
index 802f3412..21010fc2 100644
--- a/ui/web/src/pages/agents/agent-detail/heartbeat-logs-dialog.tsx
+++ b/ui/web/src/pages/agents/agent-detail/heartbeat-logs-dialog.tsx
@@ -8,7 +8,7 @@ import { Button } from "@/components/ui/button";
 import { Badge } from "@/components/ui/badge";
 import { useMinLoading } from "@/hooks/use-min-loading";
 import type { HeartbeatLog } from "@/pages/agents/hooks/use-agent-heartbeat";
-import { formatRelativeTime, formatDate } from "@/lib/format";
+import { formatRelativeTime, formatDate, formatDuration } from "@/lib/format";
 
 const PAGE_SIZE = 20;
 
@@ -69,8 +69,8 @@ export function HeartbeatLogsDialog({
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>
-      <DialogContent className="max-h-[90vh] w-[95vw] sm:max-w-3xl flex flex-col gap-0 p-0">
-        <DialogHeader className="px-4 pt-4 pb-3 sm:px-6 sm:pt-6 flex-row items-center justify-between gap-2">
+      <DialogContent className="max-h-[90vh] w-[95vw] flex flex-col sm:max-w-3xl">
+        <DialogHeader className="flex-row items-center justify-between gap-2 pr-8">
           <DialogTitle>{t("heartbeat.logsTitle")}</DialogTitle>
           <Button
             variant="outline"
@@ -84,7 +84,7 @@ export function HeartbeatLogsDialog({
           </Button>
         </DialogHeader>
 
-        <div className="overflow-y-auto min-h-0 max-h-[60vh] -mx-0 px-4 sm:px-6 overscroll-contain">
+        <div className="overflow-y-auto min-h-0 max-h-[60vh] -mx-4 px-4 sm:-mx-6 sm:px-6 overscroll-contain">
           {fetching && logs.length === 0 ? (
             <div className="flex items-center justify-center py-12">
               <div className="h-6 w-6 animate-spin rounded-full border-2 border-muted-foreground border-t-transparent" />
@@ -98,13 +98,18 @@ export function HeartbeatLogsDialog({
               {logs.map((log) => (
                 <div key={log.id} className="rounded-md border p-3 text-sm space-y-1">
                   <div className="flex items-center justify-between gap-2 flex-wrap">
-                    <span className="text-xs text-muted-foreground" title={formatDate(log.ran_at)}>
-                      {formatRelativeTime(log.ran_at)}
+                    <span className="text-xs text-muted-foreground" title={formatDate(log.ranAt)}>
+                      {formatRelativeTime(log.ranAt)}
                     </span>
-                    <div className="flex items-center gap-2">
-                      {log.duration_ms != null && (
-                        <span className="text-xs text-muted-foreground">
-                          {log.duration_ms}ms
+                    <div className="flex items-center gap-1.5">
+                      {(log.inputTokens != null || log.outputTokens != null) && (
+                        <span className="text-[10px] text-muted-foreground">
+                          {log.inputTokens ?? 0}↓ {log.outputTokens ?? 0}↑
+                        </span>
+                      )}
+                      {log.durationMs != null && (
+                        <span className="text-[10px] text-muted-foreground">
+                          {formatDuration(log.durationMs)}
                         </span>
                       )}
                       <Badge variant={statusVariant(log.status)} className="text-[10px]">
@@ -115,8 +120,8 @@ export function HeartbeatLogsDialog({
                   {log.summary && (
                     <p className="text-xs text-muted-foreground line-clamp-2">{log.summary}</p>
                   )}
-                  {log.skip_reason && (
-                    <p className="text-xs text-muted-foreground italic">{log.skip_reason}</p>
+                  {log.skipReason && (
+                    <p className="text-xs text-muted-foreground italic">{log.skipReason}</p>
                   )}
                   {log.error && (
                     <p className="text-xs text-destructive">{log.error}</p>
@@ -128,7 +133,7 @@ export function HeartbeatLogsDialog({
         </div>
 
         {/* Pagination */}
-        <div className="flex items-center justify-between gap-2 px-4 py-3 sm:px-6 border-t text-xs text-muted-foreground">
+        <div className="flex items-center justify-between gap-2 border-t pt-3 text-xs text-muted-foreground">
           <span>
             {total > 0
               ? t("heartbeat.logsPagination", {
diff --git a/ui/web/src/pages/agents/agent-detail/overview-sections/heartbeat-card.tsx b/ui/web/src/pages/agents/agent-detail/overview-sections/heartbeat-card.tsx
index 5db1aac7..863711f4 100644
--- a/ui/web/src/pages/agents/agent-detail/overview-sections/heartbeat-card.tsx
+++ b/ui/web/src/pages/agents/agent-detail/overview-sections/heartbeat-card.tsx
@@ -88,6 +88,9 @@ export function HeartbeatCard({ heartbeat }: HeartbeatCardProps) {
             {config.channel && (
               <span>{config.channel}{config.chatId ? `/${config.chatId}` : ""}</span>
             )}
+            {config.model && (
+              <span className="text-violet-600 dark:text-violet-400">{config.model}</span>
+            )}
           </div>
 
           <div className="flex flex-wrap gap-x-3 gap-y-0.5">
@@ -106,6 +109,9 @@ export function HeartbeatCard({ heartbeat }: HeartbeatCardProps) {
             <span>{t("heartbeat.runs")}: {config.runCount}</span>
             <span>{t("heartbeat.suppressed")}: {config.suppressCount}</span>
           </div>
+          {config.lastError && config.lastStatus === "error" && (
+            <p className="text-xs text-destructive truncate">{config.lastError}</p>
+          )}
         </div>
 
         <div className="flex gap-2 pt-1">
diff --git a/ui/web/src/pages/agents/hooks/use-agent-heartbeat.ts b/ui/web/src/pages/agents/hooks/use-agent-heartbeat.ts
index 497d0e99..80d78b8d 100644
--- a/ui/web/src/pages/agents/hooks/use-agent-heartbeat.ts
+++ b/ui/web/src/pages/agents/hooks/use-agent-heartbeat.ts
@@ -40,11 +40,11 @@ export interface HeartbeatLog {
   status: string;
   summary?: string;
   error?: string;
-  duration_ms?: number;
-  input_tokens?: number;
-  output_tokens?: number;
-  skip_reason?: string;
-  ran_at: string;
+  durationMs?: number;
+  inputTokens?: number;
+  outputTokens?: number;
+  skipReason?: string;
+  ranAt: string;
 }
 
 /** Return type of useAgentHeartbeat, for passing as props. */