OpalStatusLine

The live facts about the model in use, right-aligned on the busy bar.

In the namespace octomy::opal::ui. Declared in src/libs/libopal/opal/ui/OpalStatusLine.hpp.

Detailed description

Specified in [§OCSD-2](../../../../content/doc/internal/specs/opal-chat-surface/design.md).

**The payload decides the segments, not a fixed column list.** A window a provider does not report is not drawn. An empty gauge implies a number that nobody has, and this tree has already paid once for a status surface that looked informative and was not.

**Spend, never headroom.** A bar fills as budget is consumed, so a full bar always means one thing. The shell statusline this tree ships states the same rule, and the two must not disagree.

**What the providers can actually supply.** Claude Code's `rate_limit_event` carries a window name and a reset time, and no percentage — so its quota bar shows the clock's progress through the window, not spend (QuotaWindow). Token spend comes from `LLMUsageTracker`, which already persists it; this widget adds no counter of its own, because two counters disagree eventually.