- Introduced a new module `runtime.ts` providing runtime-agnostic utilities for file operations and process management across Node.js, Bun, and Deno.

feat: implement core file watcher for GraphQL files

- Added `index.ts` for a core file watcher that monitors changes in GraphQL files, triggering appropriate callbacks for server and client changes.

refactor: streamline Apollo Sandbox script handling

- Refactored `apollo-sandbox-script.ts` to utilize a core sandbox handler for improved consistency and maintainability.

refactor: update debug route to use core debug template

- Changed `debug.ts` to import and use `generateDebugHtml` from the core debug module instead of a local template.

refactor: enhance GraphQL Yoga route handler

- Updated `graphql-yoga.ts` to use a core server factory for creating the Yoga server, improving code reuse and consistency.

refactor: simplify extend loader logic

- Refactored `extend-loader.ts` to leverage core extend functionality, reducing complexity and improving maintainability.

refactor: optimize file watcher setup

- Updated `file-watcher.ts` to utilize the core watcher module, simplifying the setup process and enhancing code clarity.

test: add dynamic port allocation for tests

- Introduced `ports.ts` to manage dynamic port allocation during tests, preventing conflicts when running multiple instances.

test: enhance test setup configuration

- Updated `setup.ts` to set CI environment variables and suppress logs during tests, improving test reliability.

chore: update Vitest configuration

- Modified `vitest.config.ts` to include setup files, retry flaky tests, and exclude unnecessary directories from test runs.

… fixture isolation utilities, and update test configurations