The banner keyed on `out || ratio > 1`, so any time draw exceeded generation
the panel screamed BROWNOUT — even while the buffer tanks were quietly
covering it, the sim's flag was false and THE SCREEN was calm. That state is
the factory working as designed, not failing. Only the HUD was panicking.
BROWNOUT is now the sim's flag and nothing else. A covered deficit gets its
own amber, steady, non-flashing state: "ON RESERVE · 34s", where the seconds
are stored/(draw-gen) — real arithmetic, because v3 ruled stored is
bandwidth-SECONDS and gen/draw are per-second. Same maths SCREEN uses.
Four states (ok / tight / reserve / brownout) now live in a pure power.ts and
are pinned by tests, including the exact case that lied: gen 100, draw 134,
stored 1000, brownout false -> reserve, not brownout.
Also uses v4 bandwidth.capacity to turn the buffer readout into a fuel gauge
(0/900) rather than a bare number.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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