repo: migrate to AGENTS.md

Move agent instructions from `.github/copilot-instructions.md` to `AGENTS.md`
at the repo root for broader AI agent tool compatibility, and remove the
Cursor rule that pointed at the old file.

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>
Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Patrik Oldsberg
2026-02-24 21:01:03 +01:00
parent 23c62214fa
commit 6a1c9550b5
3 changed files with 45 additions and 53 deletions
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---
description: General project guidelines for Backstage development
globs:
alwaysApply: true
---
Follow the instructions at /.github/copilot-instructions.md
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Backstage is an open platform for building developer portals. This is a TypeScript monorepo using Yarn workspaces.
## Key Directories
- `/packages`: Core framework packages (prefixed `@backstage/`)
- `/plugins`: Plugin packages (prefixed `@backstage/plugin-*`)
- `/packages/app` and `/packages/backend`: Example app for local development
- `/packages/app`: Main example app using the new frontend system
- `/packages/app-legacy`: Example app using the old frontend system
- `/docs`: Documentation files
Packages prefixed with `core-` (e.g., `@backstage/core-plugin-api`) are part of the old frontend system. Packages prefixed with `frontend-` (e.g., `@backstage/frontend-plugin-api`) are part of the new frontend system (NFS). Packages prefixed with `backend-` (e.g., `@backstage/backend-plugin-api`) are part of the backend system.
## Code Standards
The following files contain guidelines for the project:
- `/CONTRIBUTING.md`: comprehensive contribution guidelines.
- `/STYLE.md`: guidelines for code style.
- `/REVIEWING.md`: guidelines for pull requests and writing changesets.
- `/SECURITY.md`: guidelines for security.
- `/docs/architecture-decisions/`: contains the architecture decisions for the project.
## Development Flow
Before any of these commands can be run, you need to run `yarn install` in the project root.
- Build: There is no need to build the project during development, and it is verified automatically in the CI pipeline.
- Test: Use `yarn test --no-watch <path>` in the project root to run tests. The path can be either a single file or a directory. Always provide a path, avoid running all tests.
- Type checking: Use `yarn tsc` in the project root to run the type checker.
- Code formatting: Use `yarn prettier --write <path>` to format code.
- Lint: Use `yarn lint --fix` in the project root to run the linter.
- API reports: Before submitting a pull request with changes to any package in the workspace, run `yarn build:api-reports` in the project root to generate API reports for all packages.
- Dev server: Use `yarn start` to run the example app locally (frontend on :3000, backend on :7007).
- Create: Use `yarn new` to scaffold new plugins, packages, or modules.
You MUST NOT create a release by running `yarn changesets version` or `yarn release` as part of any changes. Releases are created by separate workflows.
All changes that affect the published version of packages in the `/packages` and `/plugins` directories must be accompanied by a changeset. Only non-private packages require changesets. See the guidelines in `/CONTRIBUTING.md#creating-changesets` for information on how to write good changesets. Changesets are stored in the `/.changeset` directory. Breaking changes must be accompanied by a `minor` version bump for packages below version `1.0.0`, or a `major` version bump for packages at version `1.0.0` or higher.
Never update ESLint, Prettier, or TypeScript configuration files unless specifically requested.
## Repository Structure
See `/docs/contribute/project-structure.md` for a detailed description of the repository structure.
## Pull Request Reviews
When reviewing a pull request you MUST calculate a priority score between 0 and 100, where a higher score indicates higher priority. You MUST include the score as an HTML comment at the very beginning of the "PR Overview" section, using the following format: `<!-- priority: <score> -->`.
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Backstage is an open platform for building developer portals. This is a TypeScript monorepo using Yarn workspaces.
## Key Directories
- `/packages`: Core framework packages (prefixed `@backstage/`)
- `/plugins`: Plugin packages (prefixed `@backstage/plugin-*`)
- `/packages/app` and `/packages/backend`: Example app for local development
- `/packages/app`: Main example app using the new frontend system
- `/packages/app-legacy`: Example app using the old frontend system
- `/docs`: Documentation files
Packages prefixed with `core-` (e.g., `@backstage/core-plugin-api`) are part of the old frontend system. Packages prefixed with `frontend-` (e.g., `@backstage/frontend-plugin-api`) are part of the new frontend system (NFS). Packages prefixed with `backend-` (e.g., `@backstage/backend-plugin-api`) are part of the backend system.
## Code Standards
The following files contain guidelines for the project:
- `/CONTRIBUTING.md`: comprehensive contribution guidelines.
- `/STYLE.md`: guidelines for code style.
- `/REVIEWING.md`: guidelines for pull requests and writing changesets.
- `/SECURITY.md`: guidelines for security.
- `/docs/architecture-decisions/`: contains the architecture decisions for the project.
## Development Flow
Before any of these commands can be run, you need to run `yarn install` in the project root.
- Build: There is no need to build the project during development, and it is verified automatically in the CI pipeline.
- Test: Use `yarn test --no-watch <path>` in the project root to run tests. The path can be either a single file or a directory. Always provide a path, avoid running all tests.
- Type checking: Use `yarn tsc` in the project root to run the type checker.
- Code formatting: Use `yarn prettier --write <path>` to format code.
- Lint: Use `yarn lint --fix` in the project root to run the linter.
- API reports: Before submitting a pull request with changes to any package in the workspace, run `yarn build:api-reports` in the project root to generate API reports for all packages.
- Dev server: Use `yarn start` to run the example app locally (frontend on :3000, backend on :7007).
- Create: Use `yarn new` to scaffold new plugins, packages, or modules.
You MUST NOT create a release by running `yarn changesets version` or `yarn release` as part of any changes. Releases are created by separate workflows.
All changes that affect the published version of packages in the `/packages` and `/plugins` directories must be accompanied by a changeset. Only non-private packages require changesets. See the guidelines in `/CONTRIBUTING.md#creating-changesets` for information on how to write good changesets. Changesets are stored in the `/.changeset` directory. Breaking changes must be accompanied by a `minor` version bump for packages below version `1.0.0`, or a `major` version bump for packages at version `1.0.0` or higher.
Never update ESLint, Prettier, or TypeScript configuration files unless specifically requested.
## Repository Structure
See `/docs/contribute/project-structure.md` for a detailed description of the repository structure.