style: apply biome autofixes and resolve remaining lint findingsHEADmain

Auto-fixed cosmetic findings (import ordering, obj["k"]->obj.k, optional
chaining, template literals, Date.now, parseInt radix, useless ternaries/
switch cases). Resolved the non-autofixable rest by hand:

- Senpy: static-only class -> object literal (no this/static reliance).
- app.html: var global shim -> window.global = window (keeps the shim,
  drops the unused-var flag).
- biome-ignore with rationale for the logout document.cookie clear and the
  holodule scrape non-null assertion.

Verified: biome check 0 diagnostics, svelte-check 0/0, 24/24 unit tests.

1 files changed, 3 insertions, 6 deletions

diff --git a/src/routes/feeds/activity-notifications/+server.ts b/src/routes/feeds/activity-notifications/+server.ts
index 70b24a20..64ba3fdc 100644
--- a/src/routes/feeds/activity-notifications/+server.ts
+++ b/src/routes/feeds/activity-notifications/+server.ts
@@ -1,15 +1,12 @@
 import {
-	notifications,
 	type Notification,
+	notifications,
 } from "$lib/Data/AniList/notifications";
 import { siteUrl } from "$lib/Utility/appOrigin";
 import root from "$lib/Utility/root";
 
 const htmlEncode = (input: string) => {
-	return input.replace(
-		/[\u00A0-\u9999<>&]/g,
-		(i) => "&#" + i.charCodeAt(0) + ";",
-	);
+	return input.replace(/[\u00A0-\u9999<>&]/g, (i) => `&#${i.charCodeAt(0)};`);
 };
 
 const render = (
@@ -82,7 +79,7 @@ export const GET = async ({ url }) => {
 	if (notification === null) {
 		token = (
 			await (await fetch(root(`/api/oauth/refresh?token=${refresh}`))).json()
-		)["access_token"];
+		).access_token;
 
 		notification = await notifications(token as string);
 	}