- Upgrade @bytecodealliance/preview2-shim from 0.18.0 to 0.20.1
- Update import paths from /deps/lib/ to /deps/dist/
- Add _getPreopens and filesystemTypes imports for new functionality
- Implement installMutableFilesystem function with directory operations
- Add unlinkFileAt and removeDirectoryAt methods to Descriptor prototype
- Install mutable filesystem in both browser runner and worker
- Add ENOENT error handling for extensionless ESM imports
- Introduce TYPEPHP_WASM_TEST_STAGE global for debugging
- Enhance error reporting with stage information in test harness
- Integrate browser-based WASM test runner using Puppeteer
- Add built-in extensions test for WASM runtime compatibility
- Implement WASI filesystem, clock and random functionality tests
- Create IO and environment variable handling tests for WASI
- Add PHPX numeric containers test for high precision types
- Include basic runtime platform detection tests
- Update run-tests.php with --target and --wasm command options
- Implement multi-target test execution for native and WASM backends
- Add WASM-specific configuration sections and argument parsing
- Integrate dependency management for browser test harness
- Refactor build script references from build-typephp-program.sh to build-program.sh
- Remove legacy numeric smoke test files and update documentation
- Migrate high precision example location from wasm/examples to examples directory
