Show session status as a badge on the detail page

Reuses SessionsTable's STATUS_VARIANT mapping (now exported) so the
detail page's status matches the table's badge instead of plain text.
Also drops the now-stale px-1.5 alignment padding on the meta lines
now that the title input carries no horizontal padding of its own.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzyfRyA7h5rs5SCAahLAWd

app/(app)/sessions/[id]/page.tsx

@@ -1,10 +1,12 @@
 import Link from "next/link";
 import { notFound } from "next/navigation";
 import type { Metadata } from "next";
+import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
 import { SessionTimelineChart } from "@/components/sessions/SessionTimelineChart";
 import { SessionTitleEditor } from "@/components/sessions/SessionTitleEditor";
+import { STATUS_VARIANT } from "@/components/sessions/SessionsTable";
 import { getSessionDetail, getSessionName } from "@/lib/db/queries/sessions";
 import { getSessionTimeline } from "@/lib/db/queries/stats";
 import { Play } from "lucide-react";
@@ -36,8 +38,9 @@ export default async function SessionDetailPage({ params }: { params: Promise<{
       <div className="flex items-center justify-between gap-4">
         <div className="min-w-0 flex-1">
           <SessionTitleEditor sessionId={detail.session.id} initialName={detail.session.name} />
-          <p className="mt-1 px-1.5 text-sm text-muted-foreground">
-            {detail.session.status} · {formatDuration(detail.session.durationMs)}
+          <p className="mt-1 flex flex-wrap items-center gap-x-1 text-sm text-muted-foreground">
+            <Badge variant={STATUS_VARIANT[detail.session.status]}>{detail.session.status}</Badge>
+            · {formatDuration(detail.session.durationMs)}
             {detail.session.kind === "replay" && detail.replayedFromName !== undefined && (
               <> · replayed from {detail.replayedFromName ?? `session #${detail.session.replayedSessionId}`}</>
             )}
@@ -50,7 +53,7 @@ export default async function SessionDetailPage({ params }: { params: Promise<{
             )}
           </p>
           {detail.session.description && (
-            <p className="mt-1 px-1.5 text-sm text-muted-foreground">{detail.session.description}</p>
+            <p className="mt-1 text-sm text-muted-foreground">{detail.session.description}</p>
           )}
         </div>
         {canReplay && (