Merge origin/main: Google Street View, KartaView and Panoramax on the slim Street Level

Main gained three imagery providers (Google Street View, KartaView,
Panoramax), shared line-coverage, cone and photo-viewer modules, one source
lit at a time and the translated interface. Their shared modules still
carried what this branch removes, so the merge ports them onto it:

- lineCoverage.js is this branch's coverage.js made provider-neutral
  (draped lines near the ground only, the selection drawn over them, key
  and rate-limit blocking); sequenceCones.js is sequences.js the same way.
  Mapillary, KartaView and Panoramax all build on them; Mapillary moves
  back to providers/mapillary/ beside the others.
- No ground casting, mesh sampling, surface modes, FOLLOW, legend, prewarm,
  orbit overview points (Panoramax's density dots included), stale-tile
  swaps or water-filled point budget come back.
- Kept from main because the new providers need them: requiresMapStack and
  attachMapStackController (Street View on Google 3D only), ground clicks,
  openNearest with an optional provider nearestImage, openImage {frame},
  reportError, the view-cone marker (now an SVG glyph), filters /
  coverageLabel / sinceBasis, OPEN STREET VIEW, keyAlternatives and i18n.
- photoViewer.js treats the viewer as expanded when its wrap is full screen
  or the iPhone popover, as EXPAND now is.
- The fixture browser gate keeps its 8 steps and adds one each for
  KartaView and Panoramax; catalogs, docs, boundaries and format scope
  follow.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/ui/styles/controls.css

@@ -81,6 +81,18 @@
   white-space: nowrap;
 }
 
+/* A longer translated title in a collapsed rail launcher tightens its
+   tracking rather than pushing the disclosure button out of the card. */
+html:not([lang='en'])
+  #right-context-rail
+  .panel-collapsible.collapsed
+  .panel-title {
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  letter-spacing: 1.5px;
+}
+
 .panel-divider {
   flex: 1;
   height: 1px;
@@ -104,6 +116,11 @@
     color var(--transition-fast);
 }
 
+/* A long translated title must not squeeze the toggle into a sliver. */
+html:not([lang='en']) .panel-collapse-btn {
+  flex-shrink: 0;
+}
+
 .panel-collapse-btn:hover {
   border-color: var(--glass-border-hover);
   color: var(--text-primary);
@@ -630,6 +647,14 @@
   white-space: nowrap;
 }
 
+/* One label column across the Display rows: --pp-label-chars is the longest
+   label of the active language (set in applicationShell.js); the labels are
+   monospace. 0.125em is the 1px letter-spacing at 8px. */
+html:not([lang='en']) .pp-slider-row > .pp-slider-mini-label {
+  flex: 0 0 auto;
+  min-width: calc(var(--pp-label-chars, 0) * (1ch + 0.125em));
+}
+
 .detection-slider-row {
   min-width: 170px;
   padding: 5px 8px 6px;
@@ -826,6 +851,11 @@
 #draw-mode-row {
   min-width: 184px;
 }
+/* Equal thirds with room around the label, so a long translated shape name
+   never runs edge to edge in its segment. */
+html:not([lang='en']) #draw-mode-row .pp-mode-btn {
+  padding: 0 4px;
+}
 #draw-label-row {
   flex-wrap: wrap;
   row-gap: 6px;
@@ -850,6 +880,11 @@
 .draw-color-select {
   flex: 0 0 74px;
 }
+/* Sized to its longest colour name so a translated one is never clipped. */
+html:not([lang='en']) .draw-color-select {
+  flex: 0 0 auto;
+  min-width: 74px;
+}
 .draw-clear-btn {
   flex: 0 0 auto;
   padding: 0 8px;
@@ -868,6 +903,80 @@ body.gev-drawing #cesiumContainer canvas {
   cursor: crosshair;
 }
 
+/* DISPLAY ▸ Import: one row per imported file, and the drop-target outline */
+.geo-import-list {
+  display: none;
+  flex-direction: column;
+  gap: 4px;
+  margin: 6px 0 0;
+  padding: 0;
+  list-style: none;
+}
+.geo-import-list.visible {
+  display: flex;
+}
+.geo-import-row {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  min-width: 0;
+}
+.geo-import-swatch {
+  flex: 0 0 8px;
+  height: 8px;
+  border-radius: 2px;
+}
+/* KML/KMZ draw with the styles written in the file, so the swatch shows a
+   hatch instead of a color the globe does not use. */
+.geo-import-swatch.own-styles {
+  background: repeating-linear-gradient(
+    45deg,
+    var(--text-dim) 0 1px,
+    transparent 1px 3px
+  );
+  box-shadow: inset 0 0 0 1px var(--text-dim);
+}
+.geo-import-name {
+  flex: 1 1 auto;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+  font-family: var(--font-mono);
+  font-size: 10px;
+  letter-spacing: 0.6px;
+  color: var(--text-primary);
+}
+.geo-import-action {
+  flex: 0 0 auto;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 22px;
+  height: 22px;
+  padding: 0;
+  background: transparent;
+  border: 1px solid rgba(255, 255, 255, 0.14);
+  border-radius: 6px;
+  color: var(--text-dim);
+  cursor: pointer;
+}
+.geo-import-action:hover,
+.geo-import-action:focus-visible {
+  color: var(--text-primary);
+  border-color: var(--accent);
+}
+.geo-import-action .material-symbols-outlined {
+  font-size: 14px;
+}
+.geo-import-hint:empty {
+  display: none;
+}
+body.gev-geo-import-drag #cesiumContainer {
+  outline: 2px dashed var(--accent);
+  outline-offset: -6px;
+}
+
 /* Proximity / All segmented control under the 3D toggle */
 #models3d-mode-row {
   min-width: 184px;
@@ -1103,6 +1212,22 @@ body.ui-clean-view #scene-runtime.active {
   margin-bottom: 0;
 }
 
+/* One label column for every parameter, as wide as the longest translated
+   label, so all slider tracks start and end at the same x. */
+html:not([lang='en']) #param-sliders {
+  display: grid;
+  grid-template-columns: max-content minmax(0, 1fr) max-content;
+  align-items: center;
+  gap: 10px;
+}
+
+html:not([lang='en']) .param-slider-row {
+  display: grid;
+  grid-column: 1 / -1;
+  grid-template-columns: subgrid;
+  margin-bottom: 0;
+}
+
 .param-label {
   font-family: var(--font-mono);
   font-size: 9px;