February 2026 monthly summary for ruby/gem_rbs_collection. Key features delivered: 1) Google Cloud AI Platform V1 Ruby Signature (RBS) Support: Added RBS type definitions for google-cloud-ai_platform-v1 gem v1.15.0, delivering stronger type safety, improved API documentation, RuboCop style configuration, and test coverage. Commits: 395d5a44ca0b386a800506654edcb3089c1a6b94. 2) RubyXL Gem: RBS Type Definitions: Introduced RBS type definitions for the rubyXL gem (v3.4), defining core classes and methods to improve type safety and developer experience when working with Excel files. Commits: 1acc2fda1726ddac0bd60c4da369ce7266479413. 3) Process/Standards Enhancement: Established a reproducible pattern for adding RBS across gems, enabling faster onboarding and consistent type-safety improvements in future contributions. Major bugs fixed: None reported or fixed this month. Overall impact and accomplishments: Strengthened type safety and developer experience for two critical Ruby gems used in cloud AI and data processing workflows; improved maintainability through explicit type contracts, better documentation, and test coverage, reducing risk of runtime errors during integration and refactors. Technologies/skills demonstrated: Ruby, RBS type definitions, type-safe API design, RuboCop style adoption, test coverage, documentation practices, and cross-gem collaboration for repository health.