Replace bare //@ts-ignore (no space, no reason) with // @ts-expect-error plus a reason on the pageEmbed sourcePageId reassignment, matching the codebase style. ProseMirror Attrs is read-only typed, so the reassignment genuinely errors — @ts-expect-error is valid here. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>