[EvanBacon]

Summary

• Adds comprehensive XCScheme support for parsing and building .xcscheme files
• Provides low-level API (@bacons/xcode/scheme) similar to the existing JSON API
• Provides high-level API with XCScheme class integrated into XcodeProject
• Includes support for xcschememanagement.plist files
• Adds 41 new tests (266 total tests now passing)

Features

Low-level API

import * as scheme from "@bacons/xcode/scheme";

// Parse and build xcscheme files
const xcscheme = scheme.parse(xml);
const xml = scheme.build(xcscheme);

// Parse and build xcschememanagement.plist
const management = scheme.parseManagement(plist);
const plist = scheme.buildManagement(management);

High-level API

import { XcodeProject, XCScheme } from "@bacons/xcode";

const project = XcodeProject.open("/path/to/project.pbxproj");

// Get existing schemes
const schemes = project.getSchemes();
const appScheme = project.getScheme("App");

// Create and save new schemes
const newScheme = XCScheme.create("MyScheme");
newScheme.addBuildTarget(buildableRef);
newScheme.setLaunchEnvironmentVariable("DEBUG", "1");
project.saveScheme(newScheme);

// Create scheme for target
const targetScheme = project.createSchemeForTarget(mainTarget);
project.saveScheme(targetScheme);

New Files

• src/scheme/types.ts - TypeScript interfaces for all scheme elements
• src/scheme/parser.ts - XML parser using @xmldom/xmldom
• src/scheme/writer.ts - XML serializer
• src/scheme/management.ts - xcschememanagement.plist support
• src/scheme/index.ts - Module exports
• src/api/XCScheme.ts - High-level scheme class
• scheme.js, scheme.d.ts - Entry points

Test plan

• Run yarn build - compiles successfully
• Run yarn test - all 266 tests pass
• Parse various xcscheme fixtures from XcodeProj
• Verify round-trip (parse → build → parse produces identical results)
• Test XcodeProject integration methods

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