Monthly work summary for 2026-03 focusing on key features delivered, major fixes, and overall impact.

July 2025 summary for guardian/frontend: Implemented a targeted LoopingVideo experiment participation tuning to move from Perc0A to Perc1A, increasing exposure from 0% to 1% using a minor configuration update in Experiments.scala. This enables early data collection on looping video experiences with minimal risk and no user impact. Change committed as e9bb2a45f028a1f845104cf7438d4b5de811a2e5.

May 2025: Guardian frontend focused on experiment lifecycle reliability and dependency modernization. Delivered a targeted bug fix for the server-tracking experiment expiration and upgraded the Facia library to the latest stable release, with no functional changes. These changes reduce timing drift in experiments, improve data quality for measurement, and enhance maintainability through up-to-date dependencies.

April 2025 (guardian/frontend): Focus on maintainability and dependency hygiene to enable faster, safer feature work. Delivered two targeted changes with minimal risk; no major defects fixed this month. Key outcomes: codebase cleanliness improvement in Dependencies.scala and facia-scala-client dependency bump to 18.0.1. Impact: reduced diffs, up-to-date dependencies, smoother future feature work. Technologies/skills demonstrated: Scala, dependency management, versioning, code hygiene.

March 2025 monthly summary for guardian/frontend: Stabilized experimentation controls by disabling the Europe Beta Front experiment across all users, moving participation from Perc50 to Perc0A. This prevents the beta feature from running, preserving data integrity, reducing analytics noise, and ensuring a consistent user experience. Implemented via a targeted Experiments.scala update, minimizing risk and downtime while maintaining readiness for future re-tests of Europe beta features.

Delivered collection-level tagging for UI styling in guardian/frontend by introducing a collectionLevel field on CollectionConfig to support primary/secondary styling and platform-specific containers. Updated faciaVersion to 12.1.0 to reflect the styling changes. The collection level is propagated through the Frontend config model (commit 86994750e24b75e28c8a3e7b3b7e55d204cedede), enabling consistent theming and safer rollout of UI variants. This work improves cross-surface visual consistency, reduces styling drift, and accelerates future theming capabilities. No major bugs fixed for guardian/frontend this month based on the provided data.