build: let tsc find the bindings nothing reads

This project has no linter and does not want one, but `strict` says nothing
about a binding that is simply never read — and that is the one kind of dead
code a reader cannot tell apart from a deliberate seam. `tsc` already walks
every file, so it may as well answer the question.

Three had accumulated: an unread `type View` import in App, and a
`useGameMeta()` resolver in Controls and YourOwn, both of which draw their
colours from somewhere else — the game-order list has its own resolver, and
YourOwn reads the reader's own records directly. None of them were wrong, they
were just leftovers that read as intent.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/client/components/Controls.tsx

@@ -65,7 +65,6 @@ export function Controls({
   /** Everything the reader entered themselves, and the ways to change it. */
   own: React.ComponentProps<typeof YourOwn>;
 }) {
-  const gameMeta = useGameMeta();
   return (
     <section className="border-t border-hairline px-4 py-5">
       {/* Which games and how they are read on one side, what the reader has

src/client/components/YourOwn.tsx

@@ -1,6 +1,5 @@
 import { useState } from "react";
 import type { CustomEvents, CustomGames, LaneId } from "../../shared/custom.ts";
-import { useGameMeta } from "../state/gameMeta.tsx";
 import type { EventDraft } from "../state/useCustom.ts";
 import { EventForm, GameForm } from "./CustomForms.tsx";
 
@@ -30,7 +29,6 @@ export function YourOwn({
   onRemoveGame: (id: string) => { removed: boolean; blockedBy: number };
   onAddEvent: (draft: EventDraft) => void;
 }) {
-  const gameMeta = useGameMeta();
   const [adding, setAdding] = useState<"game" | "event" | null>(null);
   const [editing, setEditing] = useState<string | null>(null);
   const [refusal, setRefusal] = useState<string | null>(null);