desloppify: code health overhaul plus abuse hardening (140 green, strict 87.2)

Honest baseline after removing 45 gaming suppressions. Structural: lib/game plus root hooks extraction, CORS origin echo, DEV_ORIGINS layering. Fixes: error-cause binding, discord 5xx split, null-cache guard, co-located tests, rejecting-fetch coverage, naming and typing cleanup, socket controller, cache bound, cascade helpers, latch resets. Hardening: per-IP rate limit on API routes, deterministic-miss UX, retry cooldown plus cap. Suite 140 green, build plus lint clean.

components/game-profile-sections.test.tsx

@@ -0,0 +1,59 @@
+import { describe, expect, it } from "vitest";
+import { render, screen } from "@testing-library/react";
+import { ModalPrices, ModalReviews } from "@/components/game-profile-sections";
+import { getDictionary } from "@/lib/i18n/get-dictionary";
+import type { GamePricePoint } from "@/lib/game/game-profile-types";
+import { profileFixture } from "@/test/fixtures";
+
+describe("ModalReviews", () => {
+    it("renders nothing without review sources", () => {
+        const dict = getDictionary("en");
+        const { container } = render(
+            <ModalReviews profile={profileFixture()} dict={dict.discord.gameModal} localeTag="en-US" />,
+        );
+        expect(container.textContent).toBe("");
+    });
+
+    it("renders Steam review data", () => {
+        const dict = getDictionary("en");
+        render(
+            <ModalReviews
+                profile={profileFixture({
+                    steamReviews: {
+                        label: "Positive",
+                        total: 100,
+                        positive: 90,
+                        negative: 10,
+                        url: "https://store.steampowered.com/app/100/#app_reviews_hash",
+                    },
+                })}
+                dict={dict.discord.gameModal}
+                localeTag="en-US"
+            />,
+        );
+        expect(screen.getByText("Positive")).toBeDefined();
+    });
+});
+
+describe("ModalPrices", () => {
+    it("renders the free badge", () => {
+        const dict = getDictionary("en");
+        const bestPrice: GamePricePoint = {
+            price: 0,
+            regular: 0,
+            currency: "USD",
+            shop: "Steam",
+            url: "",
+        };
+        render(
+            <ModalPrices
+                dict={dict.discord.gameModal}
+                localeTag="en-US"
+                bestPrice={bestPrice}
+                historyLow={null}
+                isFree
+            />,
+        );
+        expect(screen.getByText(dict.discord.gameModal.free)).toBeDefined();
+    });
+});