Improve code quality and development setup

[JReinhold]

This PR is an exploration into modern tooling.

1. Following best practices as defined in https://e18e.dev/docs/publishing.html
2. Use oxfmt for formatting instead of Prettier. Noticeably faster, but same output
3. Use oxlint for linting, default rules + type-aware rules. Various minor code changes to get 0 warnings and errors
4. Add handy check-everything script to the root package.json that runs all the same checks that CI does.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 43d5e80

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[codecov]

Bundle Report

Changes will decrease total bundle size by 8 bytes (-0.02%) ⬇️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
@storybook/addon-mcp-esm	17.57kB	-8 bytes (-0.05%) ⬇️

Affected Assets, Files, and Routes:

view changes for bundle: @storybook/addon-mcp-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
preset.js	-8 bytes	17.57kB	-0.05%

Files in preset.js:

• ./src/preset.ts → Total Size: 900 bytes

• ./package.json → Total Size: 194 bytes

• ./src/mcp-handler.ts → Total Size: 3.75kB

[codecov]

Codecov Report

❌ Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 82.63%. Comparing base (cddbf34) to head (43d5e80).
⚠️ Report is 1 commits behind head on next.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
packages/addon-mcp/src/preset.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             next      #64      +/-   ##
==========================================
+ Coverage   82.56%   82.63%   +0.07%     
==========================================
  Files          15       15              
  Lines         843      841       -2     
  Branches      162      162              
==========================================
- Hits          696      695       -1     
+ Misses        139      138       -1     
  Partials        8        8              

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[pkg-pr-new]

npm i https://pkg.pr.new/@storybook/addon-mcp@64

npm i https://pkg.pr.new/@storybook/mcp@64

commit: 43d5e80

[Copilot]

Pull Request Overview

This PR migrates the codebase from Prettier to oxfmt/oxlint for code formatting and linting. The key motivations are likely improved performance and TypeScript-aware linting capabilities.

Key Changes:

• Replaces Prettier with oxfmt for code formatting and oxlint for linting
• Upgrades tsdown from 0.15.9 to 0.15.12 with publint support
• Removes unused next parameter from middleware handlers
• Adds type assertions to fix TypeScript strict checks
• Updates GitHub Actions workflows to use pinned commit hashes for better security

Reviewed Changes

Copilot reviewed 25 out of 28 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
package.json	Replaces Prettier with oxfmt/oxlint, adds new scripts for linting and publint
.oxfmtrc.json	New config file for oxfmt formatter matching previous Prettier settings
.vscode/settings.json	Configures VS Code to use oxc formatter
pnpm-workspace.yaml	Adds publint catalog entry and @swc/core to onlyBuiltDependencies
turbo.json	Adds publint task with build dependency
packages/*/package.json	Adds publint script and dependency to both packages
packages/addon-mcp/src/preset.ts	Removes unused next parameter from middleware
packages/addon-mcp/src/mcp-handler.ts	Removes unused next parameter, makes initialize handler async, adds oxlint disable comment
packages/addon-mcp/src/mcp-handler.test.ts	Removes unused next variable from tests, adds oxlint disable comment, fixes type assertions
packages/mcp/src/utils/parse-react-docgen.ts	Adds type assertion for p.key
packages/mcp/src/utils/parse-react-docgen.test.ts	Updates test expectations to use double quotes instead of escaped quotes
packages/mcp/src/utils/get-manifest.test.ts	Removes unused afterEach import
packages/mcp/src/tools/get-component-documentation.test.ts	Removes unused afterEach import
packages/addon-mcp/tsconfig.json	Removes unnecessary baseUrl config
apps/internal-storybook/tsconfig.json	Removes unnecessary baseUrl config
apps/internal-storybook/stories/components/Page.stories.ts	Removes unnecessary await keyword
.github/workflows/*.yml	Pins GitHub Actions to specific commit hashes for security
.prettierignore, packages/mcp/.prettierrc, packages/mcp/.prettierignore	Removes Prettier config files

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported