[O] Add cached build and dev mode

[Misaka13514]

No description provided.

[github-actions]

🐱 感谢贡献！

部署了预览，在这里哦: https://pr-344.data-preview.pages.dev

🕒 最后更新: 2025-11-20 09:58:09 (UTC)

[Copilot]

Pull Request Overview

This PR adds build caching and a development mode to improve build performance and developer experience. The changes introduce a caching system that tracks file modifications and reuses previously generated results, along with a watch mode that automatically rebuilds on file changes.

• Implements a build cache system using MD5 hashes to detect file changes and avoid unnecessary rebuilds
• Adds a file watcher that monitors source directories and triggers rebuilds on changes
• Integrates cache logic into blur code generation and MDX page compilation

Reviewed Changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
yarn.lock	Adds concurrently package and its dependencies for running multiple commands in parallel
scripts/cache.ts	New cache system implementation with file hashing, change detection, and result storage
scripts/watch.ts	New watch mode script that monitors file changes and triggers debounced rebuilds
scripts/build.ts	Integrates caching into build pipeline for blur codes and MDX pages; adds error handling wrapper
package.json	Adds new watch, dev, and clean scripts; adds concurrently dev dependency
.gitignore	Excludes the .build-cache directory from version control

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.