Description: What problem are you trying to solve? When configuring a pipeline in Harness CD (Pipeline Studio), selecting an Environment or Infrastructure Definition requires scrolling through a flat dropdown list with no search functionality. At scale, where organizations manage dozens or hundreds of environments, this makes pipeline authoring slow and frustrating. What would you like to see? A type-to-filter / search input inside the Environment and Infrastructure Definition dropdowns in Pipeline Studio. As a user types, the dropdown should narrow in real time to show only matching entries, consistent with how other selectable fields work across the Harness platform. Why is this important? Reduces time spent configuring pipelines. Reduces risk of selecting the wrong environment when lists are long. Improves usability for enterprise customers operating at scale. Aligns the experience with other Harness modules (e.g., Connectors, Services) that already support searchable dropdowns. Who is impacted? Any Harness CD user who works with a large number of Environments or Infrastructure Definitions, particularly enterprise customers.