Fix hook timeout in admin.sports-seasons.$id test

vi.resetModules() + multiple await import() in beforeEach forced full
module re-evaluation on every test, exceeding the 10s hook timeout in CI.
Replaced with static top-level imports — vi.mock() hoisting ensures mocks
are in place before the module under test is imported.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/routes/__tests__/admin.sports-seasons.$id.test.ts

@@ -1,8 +1,13 @@
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import type { RouterContextProvider } from "react-router";
+import { auth } from "~/lib/auth.server";
+import { isUserAdmin } from "~/models/user";
+import { findParticipantById, updateParticipant } from "~/models/season-participant";
+import { upsertRegularSeasonStandings } from "~/models/regular-season-standings";
+import { deletePendingStandingsMapping } from "~/models/pending-standings-mappings";
+import { action } from "../admin.sports-seasons.$id";
 
 const ctx = {} as unknown as RouterContextProvider;
-let action: any;
 
 vi.mock("~/lib/auth.server", () => ({
   auth: { api: { getSession: vi.fn() } },
@@ -70,32 +75,18 @@ function makeResolveRequest() {
 }
 
 describe("admin.sports-seasons.$id action", () => {
-  beforeEach(async () => {
+  beforeEach(() => {
     vi.clearAllMocks();
-    vi.resetModules();
-
-    const { auth } = await import("~/lib/auth.server");
     vi.mocked(auth.api.getSession).mockResolvedValue({ user: { id: "admin-1" } } as any);
-
-    const { isUserAdmin } = await import("~/models/user");
     vi.mocked(isUserAdmin).mockResolvedValue(true);
-
-    const { findParticipantById, updateParticipant } = await import("~/models/season-participant");
     vi.mocked(findParticipantById).mockResolvedValue({
       id: "participant-7",
       name: "Golden State Warriors",
       sportsSeasonId: "season-1",
     } as any);
     vi.mocked(updateParticipant).mockResolvedValue({ id: "participant-7" } as any);
-
-    const { upsertRegularSeasonStandings } = await import("~/models/regular-season-standings");
     vi.mocked(upsertRegularSeasonStandings).mockResolvedValue(undefined as never);
-
-    const { deletePendingStandingsMapping } = await import("~/models/pending-standings-mappings");
     vi.mocked(deletePendingStandingsMapping).mockResolvedValue(undefined as never);
-
-    const routeModule = await import("../admin.sports-seasons.$id");
-    action = routeModule.action;
   });
 
   it("returns the resolved API team and participant name after a mapping is confirmed", async () => {
@@ -114,7 +105,6 @@ describe("admin.sports-seasons.$id action", () => {
   });
 
   it("rejects a participant from a different sports season", async () => {
-    const { findParticipantById, updateParticipant } = await import("~/models/season-participant");
     vi.mocked(findParticipantById).mockResolvedValue({
       id: "participant-7",
       name: "Golden State Warriors",