docs: add AGENTS.md guide for AI agents (#5942)

.cursor/rules/commands.mdc

@@ -1,12 +0,0 @@
----
-alwaysApply: true
----
-
-When running yarn commands - always run them in the root directory. Do not run them in child workspaces.
-
-The following commands can be useful:
-
-- `yarn typecheck` to run typechecker
-- `yarn lint` to run the code linter and formatter
-- `yarn lint:fix` to fix some of the code lint issues (running this is preferred over `yarn lint`)
-- `yarn test` to run all the tests

.cursor/rules/typescript.mdc

@@ -1,37 +0,0 @@
----
-description:
-globs: *.ts,*.tsx
-alwaysApply: false
----
-
-You are an expert in TypeScript and React.
-
-Code Style and Structure
-
-- Write concise, technical TypeScript code.
-- Use functional and declarative programming patterns; avoid classes.
-- Prefer iteration and modularization over code duplication.
-- Use descriptive variable names with auxiliary verbs (e.g., isLoaded, hasError).
-- Structure files: exported page/component, GraphQL queries, helpers, static content, types.
-- When creating a new component, place it in its own file rather than grouping multiple components in a single file.
-
-Naming Conventions
-
-- Favor named exports for components and utilities.
-
-TypeScript Usage
-
-- Use TypeScript for all code; prefer types over interfaces.
-- Avoid enums; use objects or maps instead.
-- Avoid using `any` or `unknown` unless absolutely necessary. Look for type definitions in the codebase instead.
-- Avoid type assertions with `as` or `!`; prefer using `satisfies`.
-
-Syntax and Formatting
-
-- Use the "function" keyword for pure functions.
-- Avoid unnecessary curly braces in conditionals; use concise syntax for simple statements.
-- Use declarative JSX, keeping JSX minimal and readable.
-
-Change validation
-
-- Run `yarn typecheck` in the root directory to validate that the generated TypeScript code is correct

.cursor/rules/unit-tests.mdc

@@ -1,14 +0,0 @@
----
-description: 
-globs: 
-alwaysApply: true
----
-Vitest test runner is used for unit tests.
-
-When running unit tests, always include the flag `--watch=false` to prevent watch mode.
-
-To run unit tests for a specific package in the monorepo, use the following command:
-
-`yarn workspace <workspaceNameFromPackageJson> run test <pathToTest>`
-
-Recommendation: Minimize the number of dependencies you mock. The fewer dependencies you mock, the better.