refactor(agent-group): replace left-border accents with status dots and

- Replace left-border accent styling with animated status dot indicator
- Remove `isLive` prop and conditional violet left-border from card container
- Add "parallel" prefix to agent group labels for multi-agent groups
- Improve spacing and alignment by moving status indicator to row start

Author: tyulyukov

apps/web/src/components/chat/AgentGroupCard.tsx

@@ -26,16 +26,16 @@ function formatAgentTaskType(taskType: string | null): string | null {
     .join(" ");
 }
 
-function agentTaskStatusAccent(status: AgentTaskSummary["status"]): string {
+function agentTaskStatusDotColor(status: AgentTaskSummary["status"]): string {
   switch (status) {
     case "running":
-      return "border-l-amber-400/70";
+      return "bg-amber-400/70";
     case "failed":
-      return "border-l-rose-400/70";
+      return "bg-rose-400/70";
     case "completed":
-      return "border-l-emerald-500/70";
+      return "bg-emerald-500/70";
     case "stopped":
-      return "border-l-muted-foreground/40";
+      return "bg-muted-foreground/40";
   }
 }
 
@@ -63,10 +63,15 @@ const AgentTaskRow = memo(function AgentTaskRow(props: { task: AgentTaskSummary
   const meta = agentTaskMeta(task);
 
   return (
-    <div
-      className={cn("rounded-md border-l-2 py-1 pl-2.5 pr-1.5", agentTaskStatusAccent(task.status))}
-    >
+    <div className="rounded-md py-1 pr-1.5 pl-2">
       <div className="flex items-center gap-1.5">
+        <span
+          className={cn(
+            "size-1.5 shrink-0 rounded-full",
+            isRunning && "animate-pulse",
+            agentTaskStatusDotColor(task.status),
+          )}
+        />
         {typeLabel && (
           <span className="shrink-0 rounded bg-muted/50 px-1 py-px text-[10px] text-muted-foreground/60">
             {typeLabel}
@@ -95,13 +100,10 @@ const AgentTaskRow = memo(function AgentTaskRow(props: { task: AgentTaskSummary
             render={
               <p
                 className={cn(
-                  "truncate text-[10px] leading-4",
+                  "truncate pl-[9px] text-[10px] leading-4",
                   isRunning ? "text-amber-400/70" : "text-muted-foreground/50",
                 )}
               >
-                {isRunning && (
-                  <span className="mr-1 inline-block size-1.5 animate-pulse rounded-full bg-amber-400/80 align-middle" />
-                )}
                 {activityLine}
               </p>
             }
@@ -119,16 +121,13 @@ const AgentTaskRow = memo(function AgentTaskRow(props: { task: AgentTaskSummary
 });
 
 export const AgentGroupCard = memo(function AgentGroupCard(props: AgentGroupCardProps) {
-  const { agentGroup, label, isLive } = props;
+  const { agentGroup, label } = props;
   const tasks = agentGroup.tasks;
 
   return (
     <div
       data-scroll-anchor-target
-      className={cn(
-        "overflow-hidden rounded-xl border border-border/40 border-l-2 bg-card/25",
-        isLive ? "border-l-violet-400/40" : "border-l-violet-400/20",
-      )}
+      className="overflow-hidden rounded-xl border border-border/40 bg-card/25"
     >
       <div className="flex items-center gap-2 px-3 py-1.5">
         <BotIcon className="size-3.5 shrink-0 text-violet-400/60" />

apps/web/src/session-logic.ts

@@ -777,16 +777,17 @@ function buildAgentGroupLabel(tasks: ReadonlyArray<AgentTaskSummary>): string {
   const total = tasks.length;
   const runningCount = tasks.filter((t) => t.status === "running").length;
   const failedCount = tasks.filter((t) => t.status === "failed").length;
+  const parallel = total > 1 ? "parallel " : "";
   const noun = total === 1 ? "agent" : "agents";
 
   if (runningCount > 0) {
-    if (runningCount === total) return `${total} ${noun} running`;
-    return `${total} ${noun} (${runningCount} running)`;
+    if (runningCount === total) return `${total} ${parallel}${noun} running`;
+    return `${total} ${parallel}${noun} (${runningCount} running)`;
   }
   if (failedCount > 0) {
-    return `${total} ${noun} finished (${failedCount} failed)`;
+    return `${total} ${parallel}${noun} finished (${failedCount} failed)`;
   }
-  return `${total} ${noun} finished`;
+  return `${total} ${parallel}${noun} finished`;
 }
 
 function buildAgentGroupEntry(