Consider a breadcrumb component (wordmark/segments · separator · current) #105

Summary

citadel-ui is introducing an app-wide top bar whose left side is a breadcrumb: a leading wordmark, a chevron/separator, and a current-surface segment (e.g. CITADEL › Trade dashboard, CITADEL › Settings · QQQ). Some segments are interactive (navigate home/up), the trailing one is the current location and non-interactive. void_ui has badge, button, separator, icon, and label but no breadcrumb primitive, so citadel is hand-rolling this as a flex_row of labels + an icon separator.

Requested change

Consider a void_ui::breadcrumb that composes an ordered list of segments with a themed separator between them: each segment is either an interactive control (calls a handler) or a plain current-location label, with the last segment styled as current by default. Truncation/overflow behavior (collapse middle segments) would be a nice-to-have but not required for the citadel use case, which is shallow (2 segments).

Notes

• Verified against void_ui HEAD 814e37e. Filed as part of the citadel app-top-bar / chrome work.
• Related: the connection/status pill in the same bar reuses the existing badge — no gap there.