chore: fix all lint errors and format codebase

- Remove unused `or` import in comments resolver
- Remove unused `users` import in recordings resolver
- Add index keys to pagination {#each} loops in videos, models, magazine
- Remove stale svelte-ignore comment in header (a11y warnings no longer fired)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/backend/src/graphql/resolvers/comments.ts

@@ -2,7 +2,7 @@ import { GraphQLError } from "graphql";
 import { builder } from "../builder";
 import { CommentType, AdminCommentListType } from "../types/index";
 import { comments, users } from "../../db/schema/index";
-import { eq, and, desc, ilike, or, count } from "drizzle-orm";
+import { eq, and, desc, ilike, count } from "drizzle-orm";
 import { awardPoints, checkAchievements } from "../../lib/gamification";
 import { requireOwnerOrAdmin, requireAdmin } from "../../lib/acl";