Same content, three different ways of telling you "which pipeline am I in". Open each, click around. Stage editing, lead detail, settings are placeholders for now — only the pipeline IA differs.
A dedicated row of tabs above the toolbar. All pipelines visible at once. Active tab has a bold underline + filled count.
Persistent left sidebar with all pipelines listed. Always visible. Hover → ✕ to delete. Most extensible.
Pipeline name is the page H1 with a dropdown chevron. The picker IS the most prominent element on screen.