DL-096
Sidebar pinning is a user-configurable presentation layer over the agent set (the layer DL-095 names and defers): any agent can be pinned as a right-sidebar fleet tab, the hardcoded always-on Supervisor/Warden tabs and their FleetTab union literals are removed (no built-in privileged agent), the pin set is a per-user client-local UI preference (localStorage-backed; never DL-078’s fleet-wide bundle; server per-user prefs a post-MVP seam), the default pin set is EMPTY, and the shell boots onto the first pin that resolves to a visible agent, else Status, instead of a special-cased Supervisor conversation
Status: Active (Matt, 2026-08-01)