Add "Zoom plot to map extent" button to Time Series tab

[cugarteblair]

Summary

Closes #1077.

Adds the "Zoom plot to match visible map extent" control to the Time Series tab of the Analysis view. This is the mirror of the button that already exists on the Elevation Plot tab — it lets a user pan/zoom the map and then snap the time-series plot's x-axis to just the data inside the current map extent, streamlining the back-and-forth between map and profile.

Background

The reverse-direction feature ("zoom plot to map extent") was added for the Elevation Plot tab in #848, but the Time Series tab is a separate component (SrTimeSeries.vue) with its own hand-maintained toolbar, so the button was never carried over. There was no deliberate guard excluding it — just an oversight. For the common atl06/atl03 repeat-track case the time-series x-axis is along-track distance (x_atc), so the same map-extent → x-range mapping applies identically.

Changes (web-client/src/components/SrTimeSeries.vue)

• pi pi-map toolbar button (aria-label="Zoom Plot to Map Extent"), disabled until a request is selected and the map has reported an extent
• handleZoomPlotToMapExtent() handler, hasMapExtentData + zoomPlotToMapTooltip computeds — ported verbatim from SrElevationPlot.vue
• New imports: getXRangeFromLatLonExtent (SrDuckDbUtils) and useSrToastStore. All other machinery (atlChartFilterStore, globalChartStore, callPlotUpdateDebounced) was already imported by the component.

Verification

Drove the production build through Playwright (Chromium) using the importFile fixture (atl03x, multi-cycle):

• Button renders on the Time Series tab (accessibility snapshot + locator), enabled when a map extent is available — parity with the Elevation Plot tab.
• Click → handleZoomPlotToMapExtent → getXRangeFromLatLonExtent (confirmed xField: x_atc) → sets zoom → callPlotUpdateDebounced → plot refresh. Verified via captured debug logs.
• Empty-result path: clicking with the map zoomed off-track shows the graceful "No Data in Visible Map Area" toast — same behavior as the Elevation Plot tab.

Note

The button is also present for atl13x time series, whose x-axis is genuinely time. It remains wired there but its usefulness is less obvious; if we want to hide it for atl13x, the existing notAtl13xTimeSeries computed in the component can gate it.

🤖 Generated with Claude Code