The desktop sidebar persists repo/lane order in localStorage
(hermes.desktop.workspaceParentOrder / workspaceOrder). If that saved
list ever contains the same id twice, orderByIds() pushes the matching
item once per occurrence, rendering the same repo header twice inside a
project. reconcileFreshFirst() then preserves the duplicates, so the
corruption self-perpetuates across restarts and storage clears.
Verified on a live install: the persisted workspaceParentOrder contained
the same repo path at two positions, the backend project tree was clean,
and the duplicated header matched the duplicated id.
Treat persisted UI order as untrusted input: orderByIds() now skips ids
it has already emitted, and reconcileFreshFirst() dedupes the retained
tail so the next persist writes a clean list (self-healing).
Jreevo
b6d2f15b6c