Performance optimizations, CI improvements, and documentation updates

[wtorsi]

Summary

• Performance optimizations: build-time cache warming for view metadata and property bindings, ViewMetadataFactory for runtime caching, build-versioned cache files tied to container.build_id
• CI improvements: added PHPStan (max level) and PHP-CS-Fixer to CI pipeline, Dependabot for automated dependency updates, tag-based release workflow
• Documentation: expanded README with architecture details, benchmarks section, Packagist and code quality badges, improved SEO in composer.json
• New components: ViewPass compiler pass, BindUtilsCacheWarmer, ViewMetadataCacheWarmer, ResponseViewInterface, benchmark scripts
• Test coverage: added tests for cache warmers, ViewPass, and cache loading integration tests

Test plan

• Verify all tests pass (composer test)
• Verify PHPStan analysis passes (composer analyse)
• Verify PHP-CS-Fixer passes (composer cs-check)
• Confirm badges render correctly on GitHub

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