Add project guidance (#209)

Author: giorgosart

AGENTS.md

@@ -0,0 +1,23 @@
+# AGENTS Instructions
+
+This repository hosts **react-easy-edit**, a small React 18 library that provides inline editing components.
+
+## Development guidelines
+- Use `yarn` for all scripts. Install dependencies with `yarn` and run tests with `yarn test`.
+- Ensure unit tests pass by running `yarn test` before committing. The tests are located in `src/lib`.
+- For coverage reports you can run `yarn coverage`. Building the library is done via `yarn build`.
+- Please add or update tests whenever you introduce a new feature or fix a bug.
+
+## Commit style
+- Keep commit titles short and descriptive.
+- Reference the related GitHub issue in parentheses, e.g. `Fix checkbox value (#123)`.
+
+## Pull request notes
+- Summarise the main changes in the PR description and mention any related issues.
+- Include the output of `yarn test` (or note if tests fail due to environment issues).
+
+## Code style hints
+- The project uses ES6 syntax with semicolons and single quotes. Look at files in `src/lib` for examples.
+- Components live in `src/lib`; the `src/demo` folder contains usage examples.
+
+Be mindful of the [Code of Conduct](CODE_OF_CONDUCT.md) and review `CONTRIBUTING.md` for additional information.