feat: add Playwright page objects

[draedful]

Summary

• add a public @gravity-ui/graph/playwright subpath with page objects for graphs, blocks, connections, and camera controls
• resolve graph instances from an application-owned Playwright locator through a namespaced DOM bridge, including cleanup on detach and root changes
• keep @playwright/test optional for regular library consumers
• add usage documentation and end-to-end coverage that imports the published subpath

Why

Graph entities are rendered on canvas, so application tests cannot reliably locate blocks and connections through DOM selectors. The new page objects provide stable, typed interactions in world coordinates without requiring applications to expose a global window.graph.

Developer impact

Existing package entry points remain unchanged. Consumers that use the new subpath should install @playwright/test as a development dependency and construct GraphPO with a locator containing exactly one graph.

Validation

• tsc -p tsconfig.publish.json --noEmit
• ESLint for the new page objects and bridge changes
• npm test — 31 suites passed, 341 tests passed
• npm run test:e2e -- e2e/tests/playwright-page-object.spec.ts — 2 tests passed
• npm run build:publish

Summary by Sourcery

Add a public Playwright testing entry point with page objects and a DOM graph instance bridge for canvas-rendered graphs.

New Features:

• Expose a new @gravity-ui/graph/playwright subpath exporting page objects for graphs, blocks, connections, and camera interactions.
• Introduce Playwright-based end-to-end tests that consume the published page object entry point.

Bug Fixes:

• Ensure graph instances are registered on their root DOM elements, cleaned up on detach, and moved when reattached to a new root.

Enhancements:

• Add a namespaced DOM symbol bridge for accessing graph instances from external tools while maintaining backward compatibility with the legacy key.
• Update Jest configuration to ignore built artifacts and add Playwright testing documentation links in both English and Russian READMEs.

Build:

• Expose the Playwright entry point in exports and typesVersions, and declare @playwright/test as an optional peer dependency.

Tests:

• Add Jest coverage for the graph DOM instance bridge behavior and Playwright E2E tests for the public page objects.

[sourcery-ai]

Reviewer's Guide

Adds a new public Playwright testing subpath with graph-focused page objects, introduces a namespaced DOM bridge for resolving graph instances from application locators, wires the bridge into Graph attach/detach lifecycle, and documents and tests the new API.

File-Level Changes

Change	Details	Files
Introduce Playwright page objects and public testing entry point for interacting with canvas-rendered graphs, blocks, connections, and camera.	Add GraphPO as the main page object that discovers a single Graph instance via DOM symbols, exposes evaluation helpers, world-coordinate interactions, and camera access. Add GraphBlockPO, GraphConnectionPO, and GraphCameraPO for block geometry and selection, connection curve interactions, and camera state/controls. Define shared Playwright types for points, rectangles, mouse modifiers/buttons, and interaction options. Export all Playwright page objects and types from a new src/playwright/index.ts and wire them into the package exports.	src/playwright/GraphPO.ts src/playwright/GraphBlockPO.ts src/playwright/GraphConnectionPO.ts src/playwright/GraphCameraPO.ts src/playwright/types.ts src/playwright/index.ts package.json
Implement a namespaced DOM bridge for graph instances and integrate it with Graph lifecycle, including migration from the legacy symbol.	Add graphInstance utilities that set and clear Graph instances on host DOM elements under both a new namespaced symbol and the legacy "graph" symbol. Update Graph.attach to move the bridge when the root changes and to register via setGraphInstance instead of directly writing to Symbol.for("graph"). Update Graph.stop to clear the bridge on full detach. Add Jest tests that verify registration on attach, cleanup on detach, and bridge movement when the root element changes.	src/utils/graphInstance.ts src/graph.ts src/graph.test.ts
Expose the Playwright subpath publicly, make @playwright/test an optional peer dependency, and adjust Jest configuration to ignore built artifacts.	Extend package.json exports and types to include the ./playwright subpath pointing to built Playwright index files. Declare @playwright/test as a peer dependency with peerDependenciesMeta optional true so regular consumers are not forced to install it. Update Jest config to ignore the build directory in testPathIgnorePatterns.	package.json jest.config.ts
Add documentation and end-to-end tests that exercise the new Playwright page objects via the published subpath.	Document Playwright testing setup, GraphPO usage, page object capabilities, and evaluate() escape hatch in docs/testing/playwright.md, and link it from both README files. Add an e2e Playwright spec that imports GraphPO from the new subpath, initializes a sample graph via an existing harness, and validates block, connection, and camera interactions.	docs/testing/playwright.md README.md README-ru.md e2e/tests/playwright-page-object.spec.ts

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[gravity-ui-bot]

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