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, 6 insertions, 6 deletions

diff --git a/src/lib/Data/AniList/activity.ts b/src/lib/Data/AniList/activity.ts
index 11466cc5..07dbeff7 100644
--- a/src/lib/Data/AniList/activity.ts
+++ b/src/lib/Data/AniList/activity.ts
@@ -115,7 +115,7 @@ export const activityHistoryOptions = async (
 				}),
 			})
 		).json()
-	)["data"]["User"];
+	).data.User;
 };
 
 const convertToTimezoneOffset = (timeStr: string) => {
@@ -228,7 +228,7 @@ export const fullActivityHistory = async (
 	for (const activity of currentPage.data.Page.activities)
 		activities.push(activity);
 
-	while (currentPage["data"]["Page"]["pageInfo"]["hasNextPage"]) {
+	while (currentPage.data.Page.pageInfo.hasNextPage) {
 		if (disableLoopingActivityCounter) break;
 
 		for (const activity of currentPage.data.Page.activities)
@@ -276,7 +276,7 @@ export const fullActivityHistory = async (
 	}
 
 	fullLocalActivityHistory = fullLocalActivityHistory.filter(
-		(a) => !isNaN(a.date),
+		(a) => !Number.isNaN(a.date),
 	);
 
 	if (new Date().getMonth() > 6)
@@ -320,7 +320,7 @@ export const activityLikes = async (id: number): Promise<Partial<User>[]> => {
 		})
 	).json();
 
-	return activityResponse["data"]["Activity"]["likes"];
+	return activityResponse.data.Activity.likes;
 };
 
 export const activityText = async (
@@ -343,10 +343,10 @@ export const activityText = async (
 			}),
 		})
 	).json();
-	let text = activityResponse["data"]["Activity"]["text"];
+	let text = activityResponse.data.Activity.text;
 
 	if (replies)
-		for (const reply of activityResponse["data"]["Activity"]["replies"])
+		for (const reply of activityResponse.data.Activity.replies)
 			text += reply.text;
 
 	return text;