React and Next.js performance optimization guidelines from Vercel Engineering. This skill should be used when writing, reviewing, or refactoring React/Next.js code to ensure optimal performance patterns. Triggers on tasks involving React components, Next.js pages, data fetching, bundle optimization, or performance improvements.
Documentation Guidelines
## Where a Document Goes
- **Published pages** live in `docs/home/`, `docs/platform/` and `docs/integrations/`. GitBook publishes them at agpt.co/docs, and a page appears on the site once that folder
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Generates the "what's new" release summary and diff file for changes in the Flutter engine (//engine/src/flutter) between two releases (e.g., 3.47 vs 3.44).
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How to land a formal cherry-pick of a merged PR for the flutter/flutter repo stable or beta channel. Only use for flutter/flutter landed pull requests. Only use when the cherry pick request is into "stable", "beta" or a branch that has the format with flutter-<major>.<minor>-candidate.0.
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Add JavaScript behavior to a Bootstrap 6 component. Use when writing a component's TypeScript source, extending BaseComponent, wiring the data API, adding events or config options, or integrating Floating UI or a third-party library.
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Build a Bootstrap 6 component's CSS and markup. Use when creating a new component, adding modifier or variant classes, or authoring component styles with Bootstrap's Sass token maps and theme overrides.
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Use, extend, and customize Bootstrap 6's utility API. Use when adding a custom utility class, modifying or removing Bootstrap's default utilities, enabling responsive or state variants, or trimming the generated utility CSS.
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Migrate projects from Bootstrap 5 to Bootstrap 6. Use when upgrading from Bootstrap 5, migrating v5 to v6, or updating v5 class names, components, Sass, or JavaScript to the latest version. For Bootstrap 4 projects, start with the v4-to-v6 migration skill instead.
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tests inherit from common tests in the root `/tests` directory.
- `/docs`: This contains the documentation for the library, including guides, tutorials, and API references.
## Coding Conventions for Hugging Face Transformers
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Use only when the user explicitly requests a review or audit of backend code under `api/`. Supports pending-change, file-focused, and pasted-diff reviews. Do not use for implementation-only requests, diagnosis without review intent, frontend code, or backend code outside `api/`.
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Use when writing, changing, or reviewing Cucumber and Playwright tests under `e2e/`, including feature files, step definitions, support code, scenario tags, locators, and assertions. Do not use for Vitest, React Testing Library, backend tests, or generic browser automation outside the E2E suite.
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Review frontend code under `web/` or `packages/dify-ui/` when the user explicitly requests a review or audit. Supports PRs, branches, pending changes, files, and pasted diffs. Do not use for implementation-only requests, diagnosis without review intent, or backend-only code.
testing) when adding or moving unit tests.
## Architecture And Boundaries
Read all backend architecture documentation before modifying backend code:
- [Backend architecture][architecture]
- [Repositories][repositories]
- [SQLAlchemy][sqlalchemy]
- [Database schema][db-schema
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commands`) own state. A plugin's `build()` closes over its own cache or loaded document; nothing outside a plugin reaches into another plugin's internals. Outside a plugin folder, import
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package's `uv` environment and Pydantic v2 APIs. Inspect current dependency source or official documentation before integrating, implementing, or mocking an API whose runtime contract is not established locally.
## Tests
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Reference any issues fixed (e.g., `Fixes #1234`)
- Ensure all tests pass before submitting
## DocumentationDocumentation uses Docusaurus and lives in `docs/`:
```bash
cd docs
yarn install
yarn start # Dev server
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Write and review Playwright E2E tests for Langflow. Trigger when the user asks to write, fix, or review E2E tests, spec files, Playwright tests, or integration tests that exercise the full UI. Also trigger when modifying data-testid attributes, test helpers in tests/utils/, or fixture configuration.
Perform a scoped IBM Equal Access Level 1 compliance audit of a chosen Langflow frontend surface (routes, components, or a PR) and produce a findings report mapped to WCAG/IBM Level 1 criteria. Default behavior is audit and report only — fixes are applied only when the user explicitly asks for remediation in the same request. Use when the user asks for an IBM Level 1 audit, a Level 1 compliance report, or to find/report Level 1 WCAG issues on a specific surface. For scanning a batch of routes without a report, see ibm-a11y-route-scan. For scanning and fixing an entire PR/branch end-to-end by default, see ibm-a11y-pr-remediation.
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Plain text files in a repository that tell a coding agent how the project works: commands to run, conventions to follow and things to avoid. CLAUDE.md, AGENTS.md, cursor rules and skills are the common kinds.
CLAUDE.md or AGENTS.md?
CLAUDE.md is read by Claude Code. AGENTS.md is an open format that Codex, Cursor and other agents read. Many projects keep one and point the other at it.
What is a skill?
A folder with a SKILL.md that describes one capability, such as filling PDFs or reviewing code. The agent loads it only when the task calls for it.
Can I search my own team's files too?
Your agents already can, over MCP, limited to the files you're allowed to read. Searching them from this page is coming.