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

components/sessions/SessionTitleEditor.tsx

@@ -46,13 +46,13 @@ export function SessionTitleEditor({ sessionId, initialName }: { sessionId: numb
   }, [status]);
 
   return (
-    <div className="-ml-1.5 flex items-center gap-2">
+    <div className="flex items-center gap-2">
       <input
         value={value}
         onChange={(e) => setValue(e.target.value)}
         placeholder={`Session #${sessionId}`}
         aria-label="Session name"
-        className="min-w-0 max-w-full border-b-2 border-transparent bg-transparent px-1.5 py-0.5 font-heading text-2xl font-semibold text-foreground outline-none transition-colors placeholder:text-muted-foreground/70 hover:border-b-border focus:border-b-primary [field-sizing:content]"
+        className="min-w-0 max-w-full border-b-2 border-transparent bg-transparent font-heading text-2xl font-semibold text-foreground outline-none transition-colors placeholder:text-muted-foreground/70 hover:border-b-border focus:border-b-primary [field-sizing:content]"
       />
       <div className="relative flex size-4 shrink-0 items-center justify-center">
         <Loader2

components/sessions/SessionsTable.tsx

@@ -25,7 +25,7 @@ export interface SessionRow {
   durationMs: number | null;
 }
 
-const STATUS_VARIANT = {
+export const STATUS_VARIANT = {
   active: "default",
   completed: "secondary",
   aborted: "destructive",