diff --git a/packages/cli-workflow/src/commands/serve/routes-live.ts b/packages/cli-workflow/src/commands/serve/routes-live.ts
index 3b1ab04..47bb134 100644
--- a/packages/cli-workflow/src/commands/serve/routes-live.ts
+++ b/packages/cli-workflow/src/commands/serve/routes-live.ts
@@ -118,7 +118,7 @@ async function emitRecordsForHead(params: {
         params.eventId.n++;
         await params.stream.writeSSE({
           event: "record",
-          data: JSON.stringify({ type: "workflow-result", role: null, content: wf.summary, timestamp: null, returnCode: wf.returnCode }),
+          data: JSON.stringify({ type: "workflow-result", returnCode: wf.returnCode, content: wf.summary, timestamp: null }),
           id: String(params.eventId.n),
         });
         return true;
diff --git a/packages/cli-workflow/src/commands/serve/routes-thread.ts b/packages/cli-workflow/src/commands/serve/routes-thread.ts
index fdd9826..e2955f1 100644
--- a/packages/cli-workflow/src/commands/serve/routes-thread.ts
+++ b/packages/cli-workflow/src/commands/serve/routes-thread.ts
@@ -45,19 +45,11 @@ async function buildThreadDetailRecords(
   const records: unknown[] = [
     {
       type: "thread-start",
-      role: null,
-      content: [
-        `workflow: ${workflowName ?? "unknown"}`,
-        `thread: ${resolved.threadId}`,
-        `status: ${resolved.source}`,
-        prompt !== null ? `\nprompt: ${prompt}` : null,
-      ].filter(Boolean).join("\n"),
-      timestamp: null,
+      workflow: workflowName ?? "unknown",
+      prompt: prompt ?? null,
       threadId: resolved.threadId,
-      bundleHash: resolved.bundleHash,
-      head: resolved.head,
-      start: resolved.start,
-      source: resolved.source,
+      status: resolved.source,
+      timestamp: null,
     },
   ];
 
@@ -69,7 +61,7 @@ async function buildThreadDetailRecords(
       const returnCode = fr.payload.meta.returnCode;
       const summary = fr.payload.meta.summary;
       if (typeof returnCode === "number" && typeof summary === "string") {
-        records.push({ type: "workflow-result", role: null, content: summary, timestamp: null, returnCode });
+        records.push({ type: "workflow-result", returnCode, content: summary, timestamp: fr.payload.timestamp });
       }
       continue;
     }
diff --git a/packages/workflow-dashboard/package.json b/packages/workflow-dashboard/package.json
index d0bdfc7..4a1d32a 100644
--- a/packages/workflow-dashboard/package.json
+++ b/packages/workflow-dashboard/package.json
@@ -10,7 +10,9 @@
   },
   "dependencies": {
     "react": "^19.2.6",
-    "react-dom": "^19.2.6"
+    "react-dom": "^19.2.6",
+    "react-markdown": "^10.1.0",
+    "shiki": "^4.0.2"
   },
   "devDependencies": {
     "@tailwindcss/vite": "^4.2.4",
diff --git a/packages/workflow-dashboard/src/api.ts b/packages/workflow-dashboard/src/api.ts
index 4310989..1d1703a 100644
--- a/packages/workflow-dashboard/src/api.ts
+++ b/packages/workflow-dashboard/src/api.ts
@@ -52,14 +52,32 @@ export type ThreadSummary = {
   status: string | null;
 };
 
-export type ThreadRecord = {
-  type: string;
-  role: string | null;
-  content: string | null;
-  timestamp: number | null;
-  [key: string]: unknown;
+export type ThreadStartRecord = {
+  type: "thread-start";
+  workflow: string;
+  prompt: string | null;
+  threadId: string;
+  status: string;
+  timestamp: null;
 };
 
+export type RoleRecord = {
+  type: "role";
+  role: string;
+  content: string;
+  timestamp: number | null;
+  meta: Record<string, unknown>;
+};
+
+export type WorkflowResultRecord = {
+  type: "workflow-result";
+  returnCode: number;
+  content: string;
+  timestamp: number | null;
+};
+
+export type ThreadRecord = ThreadStartRecord | RoleRecord | WorkflowResultRecord;
+
 // ── Gateway endpoints ───────────────────────────────────────────────
 
 export function listAgents(): Promise<AgentEndpoint[]> {
diff --git a/packages/workflow-dashboard/src/components/markdown.tsx b/packages/workflow-dashboard/src/components/markdown.tsx
new file mode 100644
index 0000000..453da12
--- /dev/null
+++ b/packages/workflow-dashboard/src/components/markdown.tsx
@@ -0,0 +1,107 @@
+import ReactMarkdown from "react-markdown";
+import { useEffect, useState } from "react";
+import { createHighlighter, type HighlighterGeneric, type BundledLanguage, type BundledTheme } from "shiki";
+
+let highlighterPromise: Promise<HighlighterGeneric<BundledLanguage, BundledTheme>> | null = null;
+
+const LANGS: BundledLanguage[] = ["typescript", "javascript", "json", "yaml", "bash", "python", "markdown"];
+
+function getHighlighter(): Promise<HighlighterGeneric<BundledLanguage, BundledTheme>> {
+  if (highlighterPromise === null) {
+    highlighterPromise = createHighlighter({
+      themes: ["github-dark"],
+      langs: LANGS,
+    });
+  }
+  return highlighterPromise;
+}
+
+function CodeBlock({ className, children }: { className?: string; children?: React.ReactNode }) {
+  const [html, setHtml] = useState<string | null>(null);
+  const code = String(children).replace(/\n$/, "");
+  const lang = className?.replace("language-", "") ?? "text";
+
+  useEffect(() => {
+    let cancelled = false;
+    getHighlighter().then((hl) => {
+      if (cancelled) return;
+      try {
+        const result = hl.codeToHtml(code, { lang, theme: "github-dark" });
+        setHtml(result);
+      } catch {
+        setHtml(null);
+      }
+    });
+    return () => { cancelled = true; };
+  }, [code, lang]);
+
+  if (html !== null) {
+    return (
+      <div
+        className="rounded overflow-x-auto text-xs my-2"
+        // biome-ignore lint/security/noDangerouslySetInnerHtml: shiki output is safe
+        dangerouslySetInnerHTML={{ __html: html }}
+      />
+    );
+  }
+
+  return (
+    <pre className="rounded overflow-x-auto text-xs my-2 p-3" style={{ background: "var(--color-bg)" }}>
+      <code>{code}</code>
+    </pre>
+  );
+}
+
+export function Markdown({ content }: { content: string }) {
+  return (
+    <div className="prose prose-invert prose-sm max-w-none">
+      <ReactMarkdown
+        components={{
+          code({ className, children, ...props }) {
+            const isInline = !className;
+            if (isInline) {
+              return (
+                <code
+                  className="text-xs px-1 py-0.5 rounded"
+                  style={{ background: "var(--color-border)", color: "var(--color-accent)" }}
+                  {...props}
+                >
+                  {children}
+                </code>
+              );
+            }
+            return <CodeBlock className={className}>{children}</CodeBlock>;
+          },
+          p({ children }) {
+            return <p className="my-1.5 leading-relaxed">{children}</p>;
+          },
+          ul({ children }) {
+            return <ul className="list-disc pl-4 my-1.5">{children}</ul>;
+          },
+          ol({ children }) {
+            return <ol className="list-decimal pl-4 my-1.5">{children}</ol>;
+          },
+          h1({ children }) {
+            return <h1 className="text-lg font-bold mt-3 mb-1">{children}</h1>;
+          },
+          h2({ children }) {
+            return <h2 className="text-base font-bold mt-2 mb-1">{children}</h2>;
+          },
+          h3({ children }) {
+            return <h3 className="text-sm font-bold mt-2 mb-1">{children}</h3>;
+          },
+          blockquote({ children }) {
+            return (
+              <blockquote
+                className="border-l-2 pl-3 my-2 text-sm"
+                style={{ borderColor: "var(--color-accent)", color: "var(--color-text-muted)" }}
+              >
+                {children}
+              </blockquote>
+            );
+          },
+        }}
+      />
+    </div>
+  );
+}
diff --git a/packages/workflow-dashboard/src/components/record-card.tsx b/packages/workflow-dashboard/src/components/record-card.tsx
new file mode 100644
index 0000000..cb966fc
--- /dev/null
+++ b/packages/workflow-dashboard/src/components/record-card.tsx
@@ -0,0 +1,128 @@
+import type { ThreadStartRecord, RoleRecord, WorkflowResultRecord, ThreadRecord } from "../api.ts";
+import { Markdown } from "./markdown.tsx";
+
+const ROLE_COLORS: Record<string, string> = {
+  preparer: "#8b5cf6",
+  agent: "#3b82f6",
+  extractor: "#f59e0b",
+};
+
+function roleColor(role: string): string {
+  return ROLE_COLORS[role] ?? "var(--color-accent)";
+}
+
+function formatTime(ts: number | null): string | null {
+  if (ts === null) return null;
+  return new Date(ts).toLocaleTimeString();
+}
+
+function StartCard({ record }: { record: ThreadStartRecord }) {
+  return (
+    <div
+      className="p-4 rounded-lg border"
+      style={{ background: "var(--color-surface)", borderColor: "var(--color-border)" }}
+    >
+      <div className="flex items-center gap-2 mb-2">
+        <span className="text-lg">🚀</span>
+        <span className="font-semibold" style={{ color: "var(--color-accent)" }}>
+          {record.workflow}
+        </span>
+        <span
+          className="text-xs px-2 py-0.5 rounded"
+          style={{
+            background: record.status === "active" ? "var(--color-success)" : "var(--color-border)",
+            color: record.status === "active" ? "var(--color-bg)" : "var(--color-text-muted)",
+          }}
+        >
+          {record.status}
+        </span>
+      </div>
+      {record.prompt !== null && (
+        <div
+          className="mt-2 p-3 rounded text-sm border-l-2"
+          style={{
+            background: "var(--color-bg)",
+            borderColor: "var(--color-accent)",
+            color: "var(--color-text)",
+          }}
+        >
+          <div className="text-xs mb-1" style={{ color: "var(--color-text-muted)" }}>
+            Prompt
+          </div>
+          <Markdown content={record.prompt} />
+        </div>
+      )}
+    </div>
+  );
+}
+
+function RoleMessage({ record }: { record: RoleRecord }) {
+  const color = roleColor(record.role);
+  return (
+    <div
+      className="p-3 rounded-lg border text-sm"
+      style={{ background: "var(--color-surface)", borderColor: "var(--color-border)" }}
+    >
+      <div className="flex items-center gap-2 mb-2">
+        <span
+          className="text-xs px-2 py-0.5 rounded font-mono font-medium"
+          style={{ background: color, color: "#fff" }}
+        >
+          {record.role}
+        </span>
+        {formatTime(record.timestamp) !== null && (
+          <span className="text-xs ml-auto" style={{ color: "var(--color-text-muted)" }}>
+            {formatTime(record.timestamp)}
+          </span>
+        )}
+      </div>
+      <Markdown content={record.content} />
+    </div>
+  );
+}
+
+function ResultCard({ record }: { record: WorkflowResultRecord }) {
+  const success = record.returnCode === 0;
+  return (
+    <div
+      className="p-4 rounded-lg border"
+      style={{
+        background: "var(--color-surface)",
+        borderColor: success ? "var(--color-success)" : "var(--color-error)",
+      }}
+    >
+      <div className="flex items-center gap-2 mb-2">
+        <span className="text-lg">{success ? "✅" : "❌"}</span>
+        <span className="font-semibold text-sm">
+          {success ? "Completed" : "Failed"}
+        </span>
+        <span
+          className="text-xs px-2 py-0.5 rounded font-mono"
+          style={{
+            background: success ? "var(--color-success)" : "var(--color-error)",
+            color: "#fff",
+          }}
+        >
+          exit {record.returnCode}
+        </span>
+        {formatTime(record.timestamp) !== null && (
+          <span className="text-xs ml-auto" style={{ color: "var(--color-text-muted)" }}>
+            {formatTime(record.timestamp)}
+          </span>
+        )}
+      </div>
+      <Markdown content={record.content} />
+    </div>
+  );
+}
+
+export function RecordCard({ record }: { record: ThreadRecord }) {
+  switch (record.type) {
+    case "thread-start":
+      return <StartCard record={record} />;
+    case "role":
+      return <RoleMessage record={record} />;
+    case "workflow-result":
+      return <ResultCard record={record} />;
+  }
+}
diff --git a/packages/workflow-dashboard/src/components/thread-detail.tsx b/packages/workflow-dashboard/src/components/thread-detail.tsx
index 9722832..cb3f516 100644
--- a/packages/workflow-dashboard/src/components/thread-detail.tsx
+++ b/packages/workflow-dashboard/src/components/thread-detail.tsx
@@ -2,6 +2,7 @@ import { useEffect, useRef, useState } from "react";
 import { getThread, killThread, pauseThread, resumeThread } from "../api.ts";
 import { useFetch } from "../hooks.ts";
 import { useSSE } from "../use-sse.ts";
+import { RecordCard } from "./record-card.tsx";
 
 type Props = {
   agent: string;
@@ -102,39 +103,8 @@ export function ThreadDetail({ agent, threadId, onBack }: Props) {
       )}
       {(status === "ok" || liveActive || records.length > 0) && (
         <div className="space-y-3">
-          {records.map((r) => (
-            <div
-              key={`${threadId}-${r.type}-${String(r.timestamp)}-${r.role ?? ""}-${r.content ?? ""}`}
-              className="p-3 rounded border text-sm"
-              style={{ background: "var(--color-surface)", borderColor: "var(--color-border)" }}
-            >
-              <div className="flex items-center gap-2 mb-1">
-                <span
-                  className="text-xs px-1.5 py-0.5 rounded font-mono"
-                  style={{ background: "var(--color-border)", color: "var(--color-accent)" }}
-                >
-                  {r.type}
-                </span>
-                {r.role && (
-                  <span className="text-xs" style={{ color: "var(--color-text-muted)" }}>
-                    {r.role}
-                  </span>
-                )}
-                {r.timestamp !== null && (
-                  <span className="text-xs ml-auto" style={{ color: "var(--color-text-muted)" }}>
-                    {new Date(r.timestamp).toLocaleTimeString()}
-                  </span>
-                )}
-              </div>
-              {r.content && (
-                <pre
-                  className="whitespace-pre-wrap text-xs mt-1"
-                  style={{ color: "var(--color-text)" }}
-                >
-                  {typeof r.content === "string" ? r.content : JSON.stringify(r.content, null, 2)}
-                </pre>
-              )}
-            </div>
+          {records.map((r, i) => (
+            <RecordCard key={`${threadId}-${i}`} record={r} />
           ))}
           <div ref={recordsEndRef} aria-hidden />
         </div>