debug(gis-search): re-add minimal diagnostic for intermittent failures

Logs session + token + duration on every search. Will revert after
cause identified.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/app/api/gis/search/route.ts

@@ -6,7 +6,12 @@ export const runtime = "nodejs";
 export const dynamic = "force-dynamic";
 
 export async function GET(request: Request) {
+  const t0 = Date.now();
   const session = await getAuthSession();
+  const hasTok = !!(session as { accessToken?: string } | null)?.accessToken;
+  const err = (session as { error?: string } | null)?.error;
+  console.log("[gis-search] in session=%s tok=%s err=%s", !!session, hasTok, err ?? "none");
+
   if (!session) {
     return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
   }
@@ -21,16 +26,19 @@ export async function GET(request: Request) {
   }
 
   try {
-    return NextResponse.json(await gisApi.search(q, limit));
-  } catch (err) {
-    if (err instanceof GisApiError) {
+    const data = await gisApi.search(q, limit);
+    console.log("[gis-search] ok q=%s dur=%dms", q, Date.now() - t0);
+    return NextResponse.json(data);
+  } catch (e) {
+    if (e instanceof GisApiError) {
+      console.log("[gis-search] gis-api %d %s", e.status, e.code);
       return NextResponse.json(
-        { error: err.code, status: err.status },
-        { status: err.status },
+        { error: e.code, status: e.status },
+        { status: e.status },
       );
     }
-    const msg = err instanceof Error ? err.message : String(err);
-    console.error("[gis-search] internal error:", msg);
+    const msg = e instanceof Error ? e.message : String(e);
+    console.error("[gis-search] internal:", msg);
     return NextResponse.json(
       { error: "internal_error", hint: msg.slice(0, 200) },
       { status: 500 },