v0.18.0

Adds

• RangePicker: a chart's range as segmented buttons, or a labelled native select below collapseBelow pixels of screen width (default 480). Options are RangeOption<Value> ({ value, label, disabled? }), values can be numbers.
• Trader pictures on trade markers: SeriesMarker takes optional avatar (picture URL) and name (for initials). A side ring and an up or down badge keep buy and sell clear without colour; the picture falls back to initials, then to the buy or sell shape. Pictures load lazily, once per page.
• Overlapping markers group into one button with a "+N" count, named with its trades or "N trades from ... to ...: N buys, N sells". A picked group lists its trades under the chart.
• SeriesChart summary prop: the chart's description for screen readers; by default a sentence with its span, start, end, high and low.
• Chart helpers in @firetailhosting/solscope-ui/chart and the main entry: chartSlots, chartRows, slotAtTime, xAtSlot, seriesSummary, colorWithAlpha, clusterMarkers, clusterLabel, clusterSide, markerLabel, markerFace, initials.

Changes

• SeriesChart draws with Lightweight Charts 5.2.1 (Apache-2.0, TradingView) on a canvas, loaded in its own chunk once a chart mounts (about 62 kB gzipped). Props are unchanged.
• The labels, crosshair, tooltip, keyboard slider, readout and markers stay DOM over the canvas, so keyboard and screen reader use work as in 0.17.0, including inspection kept through live ticks.
• A new series wipes in from the left instead of drawing the line in; a live tick no longer replays it.
• TradingView's attribution logo shows at the bottom left of each chart, above the time axis, as its license asks; it is a named link, last in the chart's tab order.
• candleWidth and the along of markersInTime are no longer used by the chart but stay exported.