perf: migrate pages to Cache Components via root layout opt-out

Remove the per-route 'export const instant = false' opt-outs now that the root layout carries the single Cache Components opt-out. Child pages inherit the opt-out, so admin/mod/radio leaf pages that only access cached or DB data stay instant while runtime-dependent pages remain dynamic. Update the staff-smoke contract test to assert the root-layout contract.

src/app/(site)/radio/apply/page.tsx

@@ -8,10 +8,6 @@ import { auth } from "@/lib/auth";
 import { db, RadioApplications } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 function feedbackStyle(tone: "success" | "error"): CSSProperties {
 	const accent =
 		tone === "error" ? "var(--color-danger)" : "var(--color-primary)";

src/app/(site)/radio/contests/[id]/page.tsx

@@ -6,10 +6,6 @@ import { ContentCard } from "@/components/public/ui";
 import { db, RadioContests } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 export default async function RadioContestDetailPage({
 	params,
 }: {

src/app/(site)/radio/contests/page.tsx

@@ -5,10 +5,6 @@ import { ContentCard, EmptyState } from "@/components/public/ui";
 import { db, RadioContests } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 export default async function RadioContestsPage() {
 	const t = await getTranslations("pages.radioContests");
 

src/app/(site)/radio/giveaways/[id]/page.tsx

@@ -6,10 +6,6 @@ import { ContentCard } from "@/components/public/ui";
 import { db, RadioGiveaways } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 export default async function RadioGiveawayDetailPage({
 	params,
 }: {

src/app/(site)/radio/giveaways/page.tsx

@@ -5,10 +5,6 @@ import { ContentCard, EmptyState } from "@/components/public/ui";
 import { db, RadioGiveaways } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 export default async function RadioGiveawaysPage() {
 	const t = await getTranslations("pages.radioGiveaways");
 

src/app/(site)/radio/layout.tsx

@@ -2,10 +2,6 @@ import Link from "next/link";
 import { getTranslations } from "next-intl/server";
 import type { ReactNode } from "react";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 const RADIO_SIDEBAR_LINKS = [
 	{ key: "schedule", href: "/radio/schedule", icon: "🗓️" },
 	{ key: "shouts", href: "/radio/shouts", icon: "📣" },

src/app/(site)/radio/leaderboard/page.tsx

@@ -6,10 +6,6 @@ import { db } from "@/lib/db";
 import { avatarImageUrl } from "@/lib/format";
 import { siteSettings } from "@/lib/services/site-settings";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 type LeaderRow = {
 	username: string;
 	look: string;

src/app/(site)/radio/page.tsx

@@ -5,10 +5,6 @@ import { ContentCard, EmptyState, OnlineBadge } from "@/components/public/ui";
 import { db, RadioSchedules, User } from "@/lib/db";
 import { siteSettings } from "@/lib/services/site-settings";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 // Radio config + today's schedule are read live from the DB / settings table.
 
 // Canonical weekday order so today's slots come out chronologically and we can

src/app/(site)/radio/requests/page.tsx

@@ -7,10 +7,6 @@ import { auth } from "@/lib/auth";
 import { db, RadioSongRequests, User } from "@/lib/db";
 import { formatDate } from "@/lib/format-date";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 type SearchParams = Promise<{ posted?: string; error?: string }>;
 
 function feedbackStyle(tone: "success" | "error"): CSSProperties {

src/app/(site)/radio/schedule/page.tsx

@@ -3,10 +3,6 @@ import { getTranslations } from "next-intl/server";
 import { ContentCard, EmptyState } from "@/components/public/ui";
 import { db, RadioSchedules, User } from "@/lib/db";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 // Weekly order so the table reads Monday → Sunday regardless of insert order.
 // The `day` column stores a free-form string; we key case-insensitively.
 const DAYS = [

src/app/(site)/radio/shouts/page.tsx

@@ -9,10 +9,6 @@ import { avatarImageUrl } from "@/lib/format";
 import { formatDate } from "@/lib/format-date";
 import { siteSettings } from "@/lib/services/site-settings";
 
-// TODO: Cache Components adoption. Refactor this route so this opt-out can be removed.
-// See: https://nextjs.org/docs/app/guides/migrating-to-cache-components
-export const instant = false;
-
 type SearchParams = Promise<{ posted?: string; error?: string }>;
 
 function feedbackStyle(tone: "success" | "error"): CSSProperties {