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feat(widgets): scale chart axes/tooltips with unit + scale options

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Consistent graph scaling across every line-chart widget. A new shared
frontend/src/lib/metricFormat.ts picks a decimal prefix (kB/MB/GB, kbps/Mbps,
Gbps, …) from the series magnitude and formats values; LineSeriesChart accepts
unit + scale and formats both the Y-axis ticks and the tooltip with the SAME
prefix (one consistent unit per axis). MetricChartWidget (Prometheus) and
QbittorrentSpeedWidget pass the widget config through; qBit speed defaults to
bytes/sec → MB/s.

WidgetConfigDialog now renders `enum` schema fields as a <Select> dropdown, so
the backend's unit/scale Literal enums become consistent pickers in every graph
widget's config (and any future enum option).

Decimal (x1000) prefixes by default (matches Mbps/MB/s/Grafana).

Tests: 13 new metricFormat tests (auto/fixed scaling, percent, seconds,
nulls, trailing-zero trimming). 179/179 frontend tests pass; tsc + ESLint clean.
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Developer
2026-07-12 11:46:07 +00:00
parent 05a9faca3e
commit b7019b33ac
12 changed files with 333 additions and 26 deletions
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frontend/src/components/.pi-map.index.md
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dir: frontend/src/components
## role
Shared UI component library providing reusable React display, table, dialog, card, chart, and widget components for the frontend application.
UI component library providing reusable React components for dashboard widgets, backup management tables, charts, dialogs, and media session displays.
## parent
index: frontend/src/.pi-map.index.md
map: frontend/src/.pi-map.md