chore: fix root TypeScript build references

[ubugeeei]

Finding

The root TypeScript build graph is stale. Running npx tsc -b fails before checking the app because tsconfig.node.json includes vite.config.ts, which does not exist in this repo.

Evidence

• npx tsc -b --pretty false fails with TS18003 for tsconfig.node.json.
• Actual config files are vite.studio.config.ts and vite.render.config.ts.

Acceptance criteria

• Update tsconfig.node.json to include the actual Vite config files.
• Add a package script for typecheck.
• npx tsc -b --pretty false passes locally.

[ubugeeei]

対応済みです。修正は PR #1 / commit 9cf4498 に反映済みです。