style: apply biome autofixes and resolve remaining lint findings

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, 1 insertions, 1 deletions

diff --git a/src/lib/Data/AniList/follow.ts b/src/lib/Data/AniList/follow.ts
index 6aec8b9a..daafc8f6 100644
--- a/src/lib/Data/AniList/follow.ts
+++ b/src/lib/Data/AniList/follow.ts
@@ -45,5 +45,5 @@ export const toggleFollow = async (
 				}),
 			})
 		).json()
-	)["data"]["ToggleFollow"];
+	).data.ToggleFollow;
 };