Add CLAUDE.md, merge global Copilot instructions

[kasperpeulen]

Summary

• Add CLAUDE.md at repo root with merged content from .github/copilot-instructions.md — both Claude Code and Copilot read this file
• Delete .github/copilot-instructions.md (merged into CLAUDE.md)
• Add per-directory CLAUDE.md files in packages/mcp/, packages/addon-mcp/, and eval/ that reference the existing .github/instructions/*.instructions.md files via @
• Keep per-directory .github/instructions/*.instructions.md files (Copilot needs these for applyTo path scoping)

Follows up on feedback from #140.

[changeset-bot]

⚠️ No Changeset found

Latest commit: cbf0fe4

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[pkg-pr-new]

npm i https://pkg.pr.new/storybookjs/mcp/@storybook/addon-mcp@159

npm i https://pkg.pr.new/storybookjs/mcp/@storybook/mcp@159

commit: 4104d71

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
324	1	323	0

View the full list of 1 ❄️ flaky test(s)

apps/internal-storybook/tests/check-deps.e2e.test.ts > Storybook Dependencies > should be using latest versions from registry

Flake rate in main: 32.35% (Passed 23 times, Failed 11 times)

Stack Traces | 5.24s run time

Error: Storybook dependencies are outdated. Update the catalog in pnpm-workspace.yaml:

  sed -i '' 's/10\.3\.0-alpha\.4/10.3.0-alpha.6/g' pnpm-workspace.yaml && pnpm install

Outdated packages:
  - @storybook/addon-docs: 10.3.0-alpha.4 → 10.3.0-alpha.6
  - @storybook/react-vite: 10.3.0-alpha.4 → 10.3.0-alpha.6
  - storybook: 10.3.0-alpha.4 → 10.3.0-alpha.6
 ❯ tests/check-deps.e2e.test.ts:42:10

To view more test analytics, go to the Test Analytics Dashboard
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[Copilot]

Pull request overview

Consolidates repository AI/dev guidance by replacing multiple GitHub Copilot instruction files with a single root-level CLAUDE.md, intended to be the shared source of truth for agent instructions across the repo.

Changes:

• Add a concise CLAUDE.md describing repo structure, tech stack, and common commands.
• Remove .github/copilot-instructions.md.
• Remove .github/instructions/*.instructions.md (addon-mcp, mcp, eval).

Reviewed changes

Copilot reviewed 1 out of 1 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
CLAUDE.md	Introduces consolidated repo overview/commands/testing guidance.
.github/copilot-instructions.md	Removed in favor of consolidated instructions.
.github/instructions/addon-mcp.instructions.md	Removed to reduce duplication; previously scoped to packages/addon-mcp/**.
.github/instructions/mcp.instructions.md	Removed to reduce duplication; previously scoped to packages/mcp/**.
.github/instructions/eval.instructions.md	Removed to reduce duplication; previously scoped to eval/**.

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated no new comments.

[codecov]

Bundle Report

Changes will increase total bundle size by 44.74kB (100.0%) ⬆️⚠️, exceeding the configured threshold of 5%.

Bundle name	Size	Change
@storybook/addon-mcp-esm*	5.05kB	5.05kB (100%) ⬆️⚠️
@storybook/mcp-esm*	39.69kB	39.69kB (100%) ⬆️⚠️

ℹ️ *Bundle size includes cached data from a previous commit