Add CI check to enforce files field on all published packages

[Copilot]

Without a files field, npm publishes everything not in .npmignore, risking accidental inclusion of source, configs, or other unintended files. Several packages were missing this field entirely.

New CI check

scripts/check-package-files.mjs — validates on every PR:

• Rust plugin main packages: files must include index.js + index.d.ts; all source-file entries must exist on disk
• Rust plugin npm sub-packages (npm/<abi>/): files must include index.farm
• JS plugins and packages/*: files must be defined and non-empty (private packages skipped)

Runs via .github/workflows/check-package-files.yaml — lightweight, no build required.

Package fixes

Package	Fix
packages/create-farm	Added files: ["create-farm.js", "index.js", "index.d.ts"]
packages/runtime-plugin-hmr	Added files: ["dist"]
js-plugins/qiankun	Added files: ["dist"]
js-plugins/tailwindcss	Added files: ["dist"]
rust-plugins/replace-dirname	Removed func.js from files — file doesn't exist and isn't referenced in exports

[changeset-bot]

⚠️ No Changeset found

Latest commit: d8233ce

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

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💥 An error occurred when fetching the changed packages and changesets in this PR

Some errors occurred when validating the changesets config:
The package or glob expression "farm-docs" is specified in the `ignore` option but it is not found in the project. You may have misspelled the package name or provided an invalid glob expression. Note that glob expressions must be defined according to https://www.npmjs.com/package/micromatch.
The package or glob expression "bench" is specified in the `ignore` option but it is not found in the project. You may have misspelled the package name or provided an invalid glob expression. Note that glob expressions must be defined according to https://www.npmjs.com/package/micromatch.

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Project	Deployment	Actions	Updated (UTC)
farm-docs	Ready	Preview, Comment	Mar 31, 2026 1:48pm