refactor: remove core-trpc from main (scaffoldable via gen core-package trpc)

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

packages/core-trpc/vitest.config.ts

@@ -1,7 +0,0 @@
-import path from "node:path";
-import { mergeConfig } from "vitest/config";
-import { jsdomVitestConfig } from "@repo/core-typescript/vitest.base.jsdom";
-
-export default mergeConfig(jsdomVitestConfig, {
-  resolve: { alias: { "@": path.resolve(__dirname, "./src") } },
-});