feat(ui): give every panel one scrollbar, select and slider skin

Every scrolling surface carries the kit's .ui-scroll, which
draws the thin themed scrollbar from --scroll-thumb and --scroll-track; the
Context panel and others drew the platform's light scrollbar because the
page declares no dark color-scheme. The per-panel scrollbar rules go; Cyber
sets the two tokens and Cockpit's HUD windows keep their accent tint.

Selects draw .gev-field's own chevron instead of the platform arrow, the
voice selects join .gev-field, number fields keep dark spinners, and the
Street Level range uses the shared slider in its green.

src/ui/styles/bhote-koshi.css

@@ -106,8 +106,6 @@
   min-height: 0;
   overflow: hidden;
   background: #03080d;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(107, 232, 255, 0.36) transparent;
 }
 
 .bhote-embedded-callout.is-youtube {

src/ui/styles/cctv.css

@@ -35,8 +35,6 @@
   gap: 8px;
   max-height: calc(100vh - 24px);
   overflow-y: auto;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.46) rgba(255, 255, 255, 0.06);
   backdrop-filter: blur(24px) saturate(1.4);
   -webkit-backdrop-filter: blur(24px) saturate(1.4);
   box-shadow:
@@ -45,25 +43,6 @@
     0 1px 0 rgba(255, 255, 255, 0.06) inset;
 }
 
-.cctv-panel-inner::-webkit-scrollbar {
-  width: 8px;
-}
-
-.cctv-panel-inner::-webkit-scrollbar-track {
-  background: rgba(255, 255, 255, 0.04);
-  border-radius: 999px;
-}
-
-.cctv-panel-inner::-webkit-scrollbar-thumb {
-  background: linear-gradient(
-    180deg,
-    rgba(0, 212, 255, 0.6),
-    rgba(0, 212, 255, 0.28)
-  );
-  border: 1px solid rgba(0, 212, 255, 0.4);
-  border-radius: 999px;
-}
-
 .cctv-controls {
   display: flex;
   gap: 8px;

src/ui/styles/cyber.css

@@ -41,8 +41,6 @@
   min-height: 0;
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(165, 188, 199, 0.35) transparent;
 }
 
 :root[data-ui-theme='cyber'] .cctv-panel-inner > .cyber-panel-body {
@@ -68,8 +66,6 @@
   min-height: 0;
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(165, 188, 199, 0.35) transparent;
 }
 
 :root[data-ui-theme='cyber'] #pp-toggles > .pp-panel-body > * {
@@ -82,6 +78,8 @@
 
 :root[data-ui-theme='cyber'] {
   color-scheme: dark;
+  --scroll-thumb: rgba(165, 188, 199, 0.35);
+  --scroll-track: transparent;
   --cyber-red: #c45454;
   --cyber-red-bright: #e16666;
   --cyber-slate: #26343a;
@@ -796,6 +794,12 @@
   accent-color: var(--cyber-red);
 }
 
+/* Street Level's range wears Cyber's slider accent like every other range. */
+:root[data-ui-theme='cyber'] .sl-range {
+  --accent: inherit;
+  --accent-glow: inherit;
+}
+
 :root[data-ui-theme='cyber']
   :where(button, a[href], input, select, textarea):focus-visible {
   outline-color: var(--cyber-red-bright) !important;

src/ui/styles/first-run.css

@@ -110,20 +110,11 @@
   overflow-y: auto;
   overscroll-behavior: contain;
   scroll-behavior: smooth;
-  /* A visible, non-overlaying affordance that the list continues. */
-  scrollbar-width: thin;
-  scrollbar-color: rgba(54, 220, 255, 0.45) transparent;
+  /* A visible, non-overlaying affordance that the list continues; the
+     scrollbar itself is the kit's .ui-scroll. */
   scrollbar-gutter: stable;
 }
 
-.first-run-choices::-webkit-scrollbar {
-  width: 6px;
-}
-.first-run-choices::-webkit-scrollbar-thumb {
-  background: rgba(54, 220, 255, 0.45);
-  border-radius: 3px;
-}
-
 .first-run-choices button {
   display: grid;
   grid-template-columns: 1.7rem 1fr 1.3rem;

src/ui/styles/form-field.css

@@ -10,6 +10,20 @@
   font-family: var(--font-sans);
   font-size: 12px;
   outline: none;
+  /* Native number spinners and the open select list follow the dark skin. */
+  color-scheme: dark;
+}
+
+/* A select draws the field's own chevron, not the platform's arrow, so every
+   dropdown in the app reads the same. The open list stays native. */
+select.gev-field {
+  -webkit-appearance: none;
+  appearance: none;
+  padding-right: 22px;
+  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='rgba(255,255,255,0.62)' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
+  background-repeat: no-repeat;
+  background-position: right 8px center;
+  background-size: 10px 6px;
 }
 
 .gev-field:focus-visible {
@@ -30,6 +44,11 @@
   padding: 2px 6px;
 }
 
+select.gev-field--compact {
+  padding-right: 18px;
+  background-position: right 6px center;
+}
+
 /* Compact inline editors share density and hide native number spinners.
    Their containing feature sets width to fit the surrounding readout. */
 .gev-field--inline {

src/ui/styles/foundation.css

@@ -9,6 +9,9 @@
   --glass-border: rgba(255, 255, 255, 0.08);
   --glass-border-hover: rgba(255, 255, 255, 0.15);
   --accent: #00d4ff;
+  /* Every scrolling surface's scrollbar (the kit's .ui-scroll). */
+  --scroll-thumb: rgba(0, 212, 255, 0.46);
+  --scroll-track: rgba(255, 255, 255, 0.06);
   --accent-dim: rgba(0, 212, 255, 0.15);
   --accent-glow: rgba(0, 212, 255, 0.4);
   --text-primary: #e8eaed;

src/ui/styles/kit.css

@@ -1,6 +1,35 @@
 /* Generic components in src/ui/kit. Names follow Halfpixel's ui-vue kit; the
    surfaces use this application's glass, accent and type tokens. */
 
+/* The thin themed scrollbar every scrolling surface wears, as ui-vue's
+   .ui-scroll. Without it a surface draws the platform's light scrollbar,
+   because the page declares no dark color-scheme. */
+/* Cesium builds its credit list and the rail card builder its lines, so
+   those two surfaces are named here instead of carrying the class. */
+.ui-scroll,
+.cesium-credit-lightbox > ul,
+.weather-card [data-line-id='status'] {
+  scrollbar-width: thin;
+  scrollbar-color: var(--scroll-thumb) var(--scroll-track);
+}
+.ui-scroll::-webkit-scrollbar,
+.cesium-credit-lightbox > ul::-webkit-scrollbar,
+.weather-card [data-line-id='status']::-webkit-scrollbar {
+  width: 8px;
+  height: 8px;
+}
+.ui-scroll::-webkit-scrollbar-thumb,
+.cesium-credit-lightbox > ul::-webkit-scrollbar-thumb,
+.weather-card [data-line-id='status']::-webkit-scrollbar-thumb {
+  border-radius: 999px;
+  background: var(--scroll-thumb);
+}
+.ui-scroll::-webkit-scrollbar-track,
+.cesium-credit-lightbox > ul::-webkit-scrollbar-track,
+.weather-card [data-line-id='status']::-webkit-scrollbar-track {
+  background: var(--scroll-track);
+}
+
 .ui-icon {
   display: inline-block;
   line-height: 1;

src/ui/styles/layers.css

@@ -84,29 +84,9 @@
   overflow-y: auto;
   overscroll-behavior: contain;
   padding-right: 4px;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.5) rgba(255, 255, 255, 0.04);
   scrollbar-gutter: stable;
 }
 
-.data-toggle-list::-webkit-scrollbar {
-  width: 6px;
-}
-
-.data-toggle-list::-webkit-scrollbar-track {
-  background: rgba(255, 255, 255, 0.04);
-  border-radius: 999px;
-}
-
-.data-toggle-list::-webkit-scrollbar-thumb {
-  background: linear-gradient(
-    180deg,
-    rgba(0, 212, 255, 0.65),
-    rgba(0, 212, 255, 0.2)
-  );
-  border-radius: 999px;
-}
-
 .data-layer-group-heading {
   margin: 8px 10px 2px;
   padding-top: 12px;
@@ -311,8 +291,6 @@ body.recording-mode .gev-panel-rail {
 #right-context-rail.layout-focus > #pp-toggles:not(.collapsed) {
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.4) transparent;
 }
 #right-context-rail.layout-focus
   > #weather-panel:not(.collapsed)
@@ -445,8 +423,6 @@ body.recording-mode .gev-panel-rail {
   overflow-x: hidden;
   overflow-y: auto;
   padding-right: 3px;
-  scrollbar-color: rgba(34, 230, 230, 0.38) transparent;
-  scrollbar-width: thin;
 }
 #space-mission-panel-host .space-mission-roster-item {
   position: relative;

src/ui/styles/panel-surfaces.css

@@ -152,7 +152,7 @@
   overflow: auto;
   overscroll-behavior: contain;
   scrollbar-width: thin;
-  scrollbar-color: var(--glass-border-hover) transparent;
+  scrollbar-color: var(--scroll-thumb) var(--scroll-track);
   /* Keep an inset focus ring inside the intentional scrolling boundary. */
   padding: 3px;
 }

src/ui/styles/provider-settings.css

@@ -184,19 +184,9 @@
   min-height: 0;
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(54, 220, 255, 0.45) transparent;
   scrollbar-gutter: stable;
 }
 
-.key-setup-rows::-webkit-scrollbar {
-  width: 6px;
-}
-.key-setup-rows::-webkit-scrollbar-thumb {
-  background: rgba(54, 220, 255, 0.45);
-  border-radius: 3px;
-}
-
 .key-setup-row {
   display: grid;
   gap: 0.35rem;

src/ui/styles/radio.css

@@ -18,8 +18,6 @@
   border-radius: 8px;
   background: rgba(2, 15, 20, 0.42);
   box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.035);
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.46) rgba(255, 255, 255, 0.06);
 }
 #radio-panel .panel-header {
   margin-bottom: 0;
@@ -1092,11 +1090,12 @@ html:not([lang='en']) .data-row-list-text {
 .sdr-radio-card select,
 .sdr-radio-card input[type='number'] {
   min-height: 28px;
-  border: 1px solid rgba(255, 183, 82, 0.28);
   border-radius: 5px;
-  color: #ffd79a;
-  background: rgba(38, 25, 8, 0.52);
   font: 8px/1 var(--font-mono);
+  /* The shared field paints the surface (and the select's chevron). */
+  --gev-field-border-color: rgba(255, 183, 82, 0.28);
+  --gev-field-color: #ffd79a;
+  --gev-field-background: rgba(38, 25, 8, 0.52);
 }
 .sdr-radio-card button {
   padding: 6px 8px;
@@ -1129,7 +1128,7 @@ html:not([lang='en']) .data-row-list-text {
 .sdr-gain-row select {
   flex: 1;
   min-width: 0;
-  padding: 5px 7px;
+  padding: 5px 22px 5px 7px;
 }
 .sdr-adsb-stats {
   display: grid;

src/ui/styles/recent-imagery.css

@@ -46,8 +46,6 @@
   max-height: calc(var(--right-stack-max-height, 50svh) - 64px);
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.46) transparent;
 }
 #recent-imagery-panel.collapsed #recent-imagery-panel-body,
 #recent-imagery-panel.collapsed #recent-imagery-panel-count,
@@ -168,7 +166,6 @@
   overflow-x: auto;
   overflow-y: hidden;
   scroll-snap-type: x proximity;
-  scrollbar-width: thin;
   outline: none;
   border-radius: 6px;
 }

src/ui/styles/scenes.css

@@ -265,15 +265,6 @@ html:not([lang='en']) #scene-panel .scene-controls .scene-btn {
   counter-reset: scene-shot;
 }
 
-.scene-shot-list::-webkit-scrollbar {
-  width: 6px;
-}
-
-.scene-shot-list::-webkit-scrollbar-thumb {
-  background: rgba(255, 255, 255, 0.16);
-  border-radius: 999px;
-}
-
 .scene-shot-empty {
   border: 1px dashed rgba(255, 255, 255, 0.14);
   border-radius: 8px;

src/ui/styles/street-level.css

@@ -39,8 +39,6 @@
     0 8px 32px rgba(0, 0, 0, 0.5),
     0 0 0 1px rgba(255, 255, 255, 0.03) inset,
     0 1px 0 rgba(255, 255, 255, 0.06) inset;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.46) rgba(255, 255, 255, 0.06);
 }
 
 /* Class-qualified, not id-qualified, so a theme's header rule still wins. */
@@ -236,17 +234,10 @@ html:not([lang='en']) .sl-meta-row .sl-nearest-btn {
   gap: 4px 10px;
 }
 
+/* The shared slider surface, in Street Level's green. */
 .sl-range {
-  width: 100%;
-  min-width: 0;
-  margin: 0;
-  accent-color: var(--sl-green);
-  cursor: pointer;
-}
-
-.sl-range:focus-visible {
-  outline: 1px solid var(--accent);
-  outline-offset: 3px;
+  --accent: var(--sl-green);
+  --accent-glow: color-mix(in srgb, var(--sl-green) 55%, transparent);
 }
 
 /* The value and its note share a line: ANY DATE (by upload date). */

src/ui/styles/voice-card.css

@@ -467,7 +467,8 @@ body.recording-mode .gev-pointer-reticle {
   min-height: 2rem;
   box-sizing: border-box;
   color: var(--text-primary);
-  background: rgba(255, 255, 255, 0.04);
+  /* background-color, so a .gev-field select keeps its chevron. */
+  background-color: rgba(255, 255, 255, 0.04);
   border: 1px solid var(--glass-border);
   border-radius: 0.3rem;
   font: inherit;
@@ -504,7 +505,6 @@ body.recording-mode .gev-pointer-reticle {
   min-height: 0;
   overflow: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
   padding: 0.55rem 0.75rem 3px 3px;
   line-height: 1.45;
   overflow-wrap: anywhere;
@@ -553,7 +553,7 @@ body.recording-mode .gev-pointer-reticle {
 #gev-voice-timeout-select {
   flex: 1 1 auto;
   min-width: 0;
-  padding: 0 0.45rem;
+  padding: 0 22px 0 0.45rem;
 }
 #gev-voice-timeout-input {
   flex: 0 0 4.5rem;

src/ui/styles/voice-cost.css

@@ -180,12 +180,11 @@ html:not([lang='en'])
   min-width: 0;
   width: 100%;
   min-height: 30px;
-  color: var(--text-primary);
-  background: #09121b;
-  border: 1px solid var(--glass-border);
   border-radius: 4px;
   font: inherit;
   font-size: 0.65rem;
+  --gev-field-background: #09121b;
+  --gev-field-border-color: var(--glass-border);
 }
 #gev-voice-control:hover .gev-voice-provider-field,
 #gev-voice-control:focus-within .gev-voice-provider-field {

src/ui/styles/weather.css

@@ -42,8 +42,6 @@
   max-height: calc(var(--right-stack-max-height, 50svh) - 64px);
   overflow-y: auto;
   overscroll-behavior: contain;
-  scrollbar-width: thin;
-  scrollbar-color: rgba(0, 212, 255, 0.46) transparent;
 }
 #weather-panel.collapsed #weather-panel-body,
 #weather-panel[hidden],