February 2026 monthly summary for detekt/detekt focusing on feature delivery and quality improvements. Key features delivered: - Implemented a static analysis rule to report violations of non-null assertions on Map access across all Map subtypes, reducing the risk of NullPointerExceptions in Kotlin code that uses maps. - Rule logic analyzes the receiver of Map.get usages and get operator calls; if the receiver is a Map or has Map as a super type, the rule matches the Map#get signature (single argument of type K and return type V). - Included comprehensive tests and performed code quality cleanup (whitespace) to satisfy repository standards. Major bugs fixed: - No major bugs reported this month for the repo; the focus was feature delivery and quality improvements. Overall impact and accomplishments: - Strengthened static analysis coverage for common Kotlin map access patterns, reducing potential production runtime errors. - Improved consistency across Map subtypes and increased developer confidence in code quality checks. - Expanded test coverage ensuring long-term stability of the rule. Technologies/skills demonstrated: - Kotlin, static analysis rule development, type inference across generics, and test-driven development. - Code quality practices and contribution hygiene (CI-friendly whitespace cleanup). Commit references: - 7c47800c906af409b5a42cda7832bc37b7373257: Report MapGetWithNonNullAssertionOperator violations on MutableMaps (#9065) and extend detection to any Map subtype; added tests and whitespace cleanup.