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Renders the deterministic 0..100 score from `computeConfidence()` as
either a 5-bar meter (default) or a 28x28 SVG ring. Color bands:
- >=80: green ("high"), 5 bars / full ring
- 50..79: yellow ("medium"), 3-4 bars
- 25..49: orange ("low"), 2 bars / partial ring
- <25: red "Draft" pill REPLACES the meter — Apple's
quiet-when-unsure affordance per research §2.A. The rec is
drafted but the model isn't asserting it.
Bars rise in height across the row (4 / 6 / 8 / 10 / 12 px) so the
"more is more" cue is independent of color, satisfying the
non-color-vision a11y baseline. SVG ring uses stroke-dasharray with
the dracula band-stroke per band so the same color story is reused.
aria-label always announces the numeric score
("Confidence: 67 of 100" / "Vertrauen: 67 von 100"), even in the
draft-pill state, so screenreaders aren't blind to the visual band
distinction.
Inputs are clamped: NaN / Infinity / negative -> 0 (draft); >100 ->
100 (high). The component is otherwise a pure render — no state, no
effects.
5 i18n keys per locale: confidence, confidenceAria (interpolates
{value}), confidenceHigh, confidenceMedium, confidenceLow,
confidenceDraft. EN+DE parity test green.
17 component tests cover all 5 value bands (high/medium/low/draft +
band edges), both variants (bars/ring), aria-label translation in
EN+DE, and clamp behaviour at the negative + >100 ends.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>