Move STATUS_VARIANT out of the "use client" SessionsTable module

The session detail page (a server component) was importing STATUS_VARIANT
from SessionsTable.tsx, a "use client" file. Next.js compiles client
modules separately for the server and client bundles, and pulling a plain
value (not a component) across that boundary let the two compiler caches
drift out of sync in dev, so the same session status could render a
different Badge color depending on which page rendered it. Moved the
constant into its own plain module that both files import.

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

components/sessions/SessionsTable.tsx

@@ -16,6 +16,7 @@ import {
 } from "@/components/ui/dialog";
 import { Play, Trash2 } from "lucide-react";
 import { toast } from "sonner";
+import { STATUS_VARIANT } from "@/components/sessions/session-status";
 
 export interface SessionRow {
   id: number;
@@ -25,12 +26,6 @@ export interface SessionRow {
   durationMs: number | null;
 }
 
-export const STATUS_VARIANT = {
-  active: "default",
-  completed: "secondary",
-  aborted: "destructive",
-} as const;
-
 function formatDuration(ms: number | null): string {
   if (ms === null) return "-";
   const totalSeconds = Math.round(ms / 1000);

components/sessions/session-status.ts

@@ -0,0 +1,8 @@
+// Plain data, deliberately kept out of SessionsTable.tsx (a "use client"
+// module) so server components (e.g. the session detail page) can import it
+// without pulling a value across the client/server compilation boundary.
+export const STATUS_VARIANT = {
+  active: "default",
+  completed: "secondary",
+  aborted: "destructive",
+} as const;