fix(frontend): readability in both themes

- Token colors wrapped in color-mix so opacity modifiers (bg-surface/90 etc.)
  generate rules; map overlay panels were rendering see-through.
- Light mode: keep white text on saturated fills (primary/danger buttons were
  remapped to navy); map text-gray-200, bg-gray-800/60, border-gray-600.
- Dark mode: lift text-gray-600/700 to gray-500 for contrast.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

drb-c2-core/app/internal/mqtt_handler.py

@@ -114,6 +114,9 @@ class MQTTHandler:
                 "secondary_sdr_mode": payload.get("secondary_sdr_mode", "none"),
                 "secondary_sdr_priority": payload.get("secondary_sdr_priority", []),
                 "secondary_sdr_running": payload.get("secondary_sdr_running"),
+                "sdr_pins": payload.get("sdr_pins", {}),
+                "sdr_devices": payload.get("sdr_devices"),
+                "op25_sdr_serial": payload.get("op25_sdr_serial"),
                 "sdr_count": payload.get("sdr_count"),  # None until reported, never a guessed 1
                 "enforce_override_timeout": payload.get("enforce_override_timeout", True),
                 "is_overridden": False,
@@ -145,7 +148,8 @@ class MQTTHandler:
             updates["node_type"] = node_type
             updates["enforce_override_timeout"] = enforce_timeout
 
-            for key in ("secondary_sdr_mode", "secondary_sdr_priority", "secondary_sdr_running"):
+            for key in ("secondary_sdr_mode", "secondary_sdr_priority", "secondary_sdr_running",
+                        "sdr_pins", "sdr_devices", "op25_sdr_serial"):
                 if key in payload:
                     updates[key] = payload[key]
             if "sdr_count" in payload:

drb-c2-core/app/models.py

@@ -68,6 +68,10 @@ class NodeRecord(BaseModel):
     # checkin, which is the source of truth; set via PATCH /nodes/{id}.
     secondary_sdr_priority: List[str] = []
     secondary_sdr_running: Optional[List[str]] = None  # what the node reports actually running
+    # node-26#11: service (op25/adsb/ais) -> dongle serial; absent = automatic.
+    sdr_pins: Dict[str, str] = {}
+    sdr_devices: Optional[List[Dict[str, Any]]] = None  # [{index, serial, name, duplicate_serial}] from checkin
+    op25_sdr_serial: Optional[str] = None  # the dongle OP25 is actually using, per the node
     sdr_count: Optional[int] = None  # self-reported by the node's checkin; None = never reported
     enforce_override_timeout: bool = True
     is_overridden: bool = False

drb-c2-core/app/routers/nodes.py

@@ -1,5 +1,5 @@
 import secrets
-from typing import List, Optional
+from typing import Dict, List, Optional
 from fastapi import APIRouter, HTTPException, Depends, Query
 from pydantic import BaseModel
 from app.models import CommandPayload
@@ -193,6 +193,7 @@ async def assign_system(
 
 
 SECONDARY_SDR_MODES = ("adsb", "ais")
+SDR_PIN_KEYS = ("op25",) + SECONDARY_SDR_MODES
 
 
 class NodeUpdateBody(BaseModel):
@@ -201,6 +202,9 @@ class NodeUpdateBody(BaseModel):
     secondary_sdr_mode: Optional[str] = None  # legacy: none | adsb | ais
     # Ordered, e.g. ["adsb", "ais"]: SDRs beyond op25's run these top-down.
     secondary_sdr_priority: Optional[List[str]] = None
+    # node-26#11: service -> dongle serial; null/"" = automatic. Moving OP25's
+    # dongle restarts OP25 on the node; the other pins never do.
+    sdr_pins: Optional[Dict[str, Optional[str]]] = None
 
 
 @router.patch("/{node_id}")
@@ -224,14 +228,32 @@ async def update_node(
             raise HTTPException(400, f"secondary_sdr_priority must be distinct values from {SECONDARY_SDR_MODES}.")
         updates["secondary_sdr_mode"] = priority[0] if priority else "none"
 
+    if "sdr_pins" in updates:
+        raw = updates["sdr_pins"] or {}
+        unknown = [k for k in raw if k not in SDR_PIN_KEYS]
+        if unknown:
+            raise HTTPException(400, f"sdr_pins keys must be from {SDR_PIN_KEYS}.")
+        pins = {k: str(v).strip() for k, v in raw.items() if v and str(v).strip()}
+        if len(set(pins.values())) != len(pins):
+            raise HTTPException(400, "Two services can't be pinned to the same SDR.")
+        updates["sdr_pins"] = pins
+
     await fstore.doc_update("nodes", node_id, updates)
 
-    # Priority goes as its own command: a config re-push restarts OP25, and
-    # changing what the spare dongles do must never interrupt P25 recording.
-    # The node applies it, then its checkin reports back what's really running.
-    if priority is not None:
-        mqtt_handler.send_command(node_id, {"action": "set_secondary_priority", "priority": priority})
-        if set(updates) <= {"secondary_sdr_priority", "secondary_sdr_mode"}:
+    # SDR settings go as their own command: a config re-push restarts OP25, and
+    # changing what the spare dongles do must never interrupt P25 recording
+    # (only moving OP25's own dongle restarts it, on the node's side). The node
+    # applies it, then its checkin reports back what's really running.
+    sdr_keys = {"secondary_sdr_priority", "secondary_sdr_mode", "sdr_pins"}
+    if sdr_keys & set(updates):
+        command = {"action": "set_sdr_config"}
+        if priority is not None:
+            command["priority"] = priority
+        if "sdr_pins" in updates:
+            # Explicit nulls so a cleared pin reaches the node as "automatic".
+            command["pins"] = {k: updates["sdr_pins"].get(k) for k in SDR_PIN_KEYS}
+        mqtt_handler.send_command(node_id, command)
+        if set(updates) <= sdr_keys:
             return {"ok": True}
 
     # Re-push config to apply new node settings locally

drb-c2-core/tests/test_node_secondary_priority.py

@@ -40,7 +40,7 @@ def _patch(body):
 def test_priority_only_sends_command_and_never_repushes_config():
     resp, update, command, push = _patch({"secondary_sdr_priority": ["ais", "adsb"]})
     assert resp.status_code == 200
-    command.assert_called_once_with("n1", {"action": "set_secondary_priority", "priority": ["ais", "adsb"]})
+    command.assert_called_once_with("n1", {"action": "set_sdr_config", "priority": ["ais", "adsb"]})
     push.assert_not_called()
     (_, _, updates), _ = update.await_args
     assert updates == {"secondary_sdr_priority": ["ais", "adsb"], "secondary_sdr_mode": "ais"}
@@ -49,7 +49,7 @@ def test_priority_only_sends_command_and_never_repushes_config():
 def test_empty_priority_turns_secondaries_off():
     resp, update, command, push = _patch({"secondary_sdr_priority": []})
     assert resp.status_code == 200
-    command.assert_called_once_with("n1", {"action": "set_secondary_priority", "priority": []})
+    command.assert_called_once_with("n1", {"action": "set_sdr_config", "priority": []})
     (_, _, updates), _ = update.await_args
     assert updates["secondary_sdr_mode"] == "none"
 
@@ -57,3 +57,20 @@ def test_empty_priority_turns_secondaries_off():
 def test_unknown_or_duplicate_modes_are_rejected():
     assert _patch({"secondary_sdr_priority": ["adsb", "sonar"]})[0].status_code == 400
     assert _patch({"secondary_sdr_priority": ["adsb", "adsb"]})[0].status_code == 400
+
+
+def test_pins_send_every_service_with_nulls_for_automatic():
+    resp, update, command, push = _patch({"sdr_pins": {"op25": "00000001", "adsb": "69420", "ais": ""}})
+    assert resp.status_code == 200
+    push.assert_not_called()
+    command.assert_called_once_with("n1", {
+        "action": "set_sdr_config",
+        "pins": {"op25": "00000001", "adsb": "69420", "ais": None},
+    })
+    (_, _, updates), _ = update.await_args
+    assert updates == {"sdr_pins": {"op25": "00000001", "adsb": "69420"}}
+
+
+def test_two_services_on_one_dongle_or_unknown_service_rejected():
+    assert _patch({"sdr_pins": {"op25": "69420", "adsb": "69420"}})[0].status_code == 400
+    assert _patch({"sdr_pins": {"sonar": "1"}})[0].status_code == 400

drb-frontend/app/globals.css

@@ -67,6 +67,10 @@ html, body {
   font-family: var(--font-mono), ui-monospace, monospace;
 }
 
+/* Dark mode: raw gray-600/700 text sits ~2.4:1 on the near-black page — below
+ * readable. Lift both to gray-500 (~4:1). */
+.dark .text-gray-600, .dark .text-gray-700 { color: #6b7280; }
+
 /* ── Light mode overrides ─────────────────────────────────────────────────── */
 /*
  * The app's components use hardcoded dark-palette Tailwind classes (bg-gray-9xx,
@@ -84,6 +88,7 @@ html:not(.dark) .bg-gray-900\/60    { background-color: rgba(255,255,255,0.85) !
 html:not(.dark) .bg-gray-900\/50    { background-color: rgba(255,255,255,0.75) !important; }
 html:not(.dark) .bg-gray-900\/30    { background-color: rgba(255,255,255,0.50) !important; }
 html:not(.dark) .bg-gray-800        { background-color: #f1f5f9 !important; }
+html:not(.dark) .bg-gray-800\/60    { background-color: rgba(226,232,240,0.70) !important; }
 html:not(.dark) .bg-gray-800\/40    { background-color: rgba(241,245,249,0.60) !important; }
 html:not(.dark) .bg-gray-800\/30    { background-color: rgba(241,245,249,0.50) !important; }
 html:not(.dark) .bg-gray-700        { background-color: #e2e8f0 !important; }
@@ -91,16 +96,25 @@ html:not(.dark) .bg-gray-700        { background-color: #e2e8f0 !important; }
 /* Borders */
 html:not(.dark) .border-gray-800   { border-color: #e2e8f0 !important; }
 html:not(.dark) .border-gray-700   { border-color: #cbd5e1 !important; }
+html:not(.dark) .border-gray-600   { border-color: #94a3b8 !important; }
+html:not(.dark) .border-gray-800\/60 { border-color: #e2e8f0 !important; }
 html:not(.dark) .divide-gray-800 > * + * { border-color: #e2e8f0 !important; }
 
 /* Text */
 html:not(.dark) .text-white        { color: #0f172a !important; }
 html:not(.dark) .text-gray-100     { color: #1e293b !important; }
+html:not(.dark) .text-gray-200     { color: #1e293b !important; }
 html:not(.dark) .text-gray-300     { color: #334155 !important; }
 html:not(.dark) .text-gray-400     { color: #475569 !important; }
 html:not(.dark) .text-gray-500     { color: #64748b !important; }
 html:not(.dark) .text-gray-600     { color: #94a3b8 !important; }
 
+/* …except on saturated fills (primary/danger/success buttons), where the fill
+ * stays dark in both themes — remapping to navy made their labels unreadable. */
+html:not(.dark) .text-white:is(.bg-accent, .bg-sev-major, .bg-sev-moderate,
+  .bg-indigo-500, .bg-indigo-600, .bg-indigo-700, .bg-red-600, .bg-red-700,
+  .bg-green-600, .bg-green-700, .bg-yellow-700, .bg-yellow-800, .bg-gray-600) { color: #ffffff !important; }
+
 /* Hover states */
 html:not(.dark) .hover\:bg-gray-900:hover  { background-color: #f8fafc !important; }
 html:not(.dark) .hover\:bg-gray-900\/50:hover { background-color: rgba(255,255,255,0.75) !important; }
@@ -177,6 +191,18 @@ html:not(.dark) .border-indigo-800 { border-color: #a5b4fc !important; }
   z-index: 0;
 }
 
+/* Pinned 511 camera tiles (MapView DotCameraLayer): strip Leaflet's tooltip
+ * padding and let the tile's own theme colours show, so the tile is no bigger
+ * than the video it holds. */
+.leaflet-tooltip.drb-cam-pin {
+  padding: 0;
+  border-radius: 6px;
+  background: var(--surface);
+  border: 1px solid var(--line-strong);
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.45);
+  white-space: normal;
+}
+
 /* ── Form inputs ─────────────────────────────────────────────────────────── */
 html:not(.dark) input:not([type="submit"]):not([type="button"]):not([type="reset"]),
 html:not(.dark) select,

drb-frontend/app/nodes/[id]/page.tsx

@@ -8,7 +8,7 @@ import { useSystems } from "@/lib/useSystems";
 import { useCalls } from "@/lib/useCalls";
 import { StatusBadge } from "@/components/StatusBadge";
 import { NodeConfigModal } from "@/components/NodeConfigModal";
-import { SecondarySdrPriority } from "@/components/SecondarySdrPriority";
+import { SdrSettings } from "@/components/SdrSettings";
 import { CallRow } from "@/components/CallRow";
 import { MachineOutputNotice } from "@/components/ui/MachineOutputNotice";
 import { useAuth } from "@/components/AuthProvider";
@@ -337,7 +337,7 @@ export default function NodeDetailPage() {
         )}
       </div>
 
-      <SecondarySdrPriority node={node} canEdit={isAdmin} />
+      <SdrSettings node={node} canEdit={isAdmin} />
 
       {/* Recent calls */}
       <section>

drb-frontend/components/CameraFeed.tsx

@@ -0,0 +1,64 @@
+"use client";
+
+import { useEffect, useRef, useState } from "react";
+import type HlsType from "hls.js";
+import type { Ny511Camera } from "@/lib/types";
+
+// 511NY stills are served with max-age=60, so refreshing faster buys nothing.
+const SNAPSHOT_REFRESH_MS = 60_000;
+
+/**
+ * One 511NY camera: the live HLS stream when the camera has one (NYSDOT's
+ * skyvdn hosts send Access-Control-Allow-Origin: *), otherwise its snapshot on
+ * a timer. A stream that fails falls back to the snapshot rather than a black box.
+ */
+export function CameraFeed({ camera, className }: { camera: Ny511Camera; className?: string }) {
+  const videoRef = useRef<HTMLVideoElement>(null);
+  const [videoFailed, setVideoFailed] = useState(false);
+  const [tick, setTick] = useState(() => Date.now());
+  const useVideo = !!camera.video_url && !videoFailed;
+
+  useEffect(() => {
+    if (useVideo) return;
+    const id = setInterval(() => setTick(Date.now()), SNAPSHOT_REFRESH_MS);
+    return () => clearInterval(id);
+  }, [useVideo]);
+
+  useEffect(() => {
+    const video = videoRef.current;
+    const src = camera.video_url;
+    if (!useVideo || !video || !src) return;
+    let hls: HlsType | null = null;
+    let cancelled = false;
+
+    if (video.canPlayType("application/vnd.apple.mpegurl")) {
+      video.src = src;   // Safari/iOS play HLS natively
+    } else {
+      import("hls.js")
+        .then(({ default: Hls }) => {
+          if (cancelled) return;
+          if (!Hls.isSupported()) { setVideoFailed(true); return; }
+          hls = new Hls({ maxBufferLength: 10, backBufferLength: 0 });
+          hls.on(Hls.Events.ERROR, (_evt, data) => { if (data.fatal) setVideoFailed(true); });
+          hls.loadSource(src);
+          hls.attachMedia(video);
+        })
+        .catch(() => setVideoFailed(true));
+    }
+    return () => {
+      cancelled = true;
+      hls?.destroy();
+      video.removeAttribute("src");
+      video.load();   // stop the download, not just the playback
+    };
+  }, [useVideo, camera.video_url]);
+
+  if (useVideo) {
+    return <video ref={videoRef} muted autoPlay playsInline className={className} onError={() => setVideoFailed(true)} />;
+  }
+  if (!camera.image_url) {
+    return <div className={`${className ?? ""} flex items-center justify-center text-[10px] text-ink-muted`}>No image</div>;
+  }
+  // eslint-disable-next-line @next/next/no-img-element
+  return <img src={`${camera.image_url}?t=${tick}`} alt={`Camera: ${camera.name}`} className={className} />;
+}

drb-frontend/components/MapView.tsx

@@ -22,7 +22,8 @@ import { useAircraft } from "@/lib/useAircraft";
 import { useAircraftTrail } from "@/lib/useAircraftTrail";
 import { useVessels } from "@/lib/useVessels";
 import { use511 } from "@/lib/use511";
-import type { Ny511Event, Ny511FeedStatus } from "@/lib/types";
+import type { Ny511Camera, Ny511Event, Ny511FeedStatus } from "@/lib/types";
+import { CameraFeed } from "@/components/CameraFeed";
 
 // ── Leaflet icon fix ──────────────────────────────────────────────────────────
 delete (L.Icon.Default.prototype as unknown as Record<string, unknown>)._getIconUrl;
@@ -380,14 +381,28 @@ function FeedProblem({ map, label, status, fetchError }: { map: L.Map; label: st
   );
 }
 
+// Pinned cameras: clicking a camera's snapshot pins its live feed as a small
+// tile anchored at the camera, so several views along one road can be read
+// against the map. Oldest pin drops past the cap.
+const MAX_CAMERA_PINS = 6;
+
 function DotCameraLayer() {
   const map = useMap();
   const shown = useOverlayShown(map, OVERLAY_DOT_CAMERAS);
   const { data, error } = use511(map, "cameras", shown);
+  const [pinned, setPinned] = useState<Ny511Camera[]>([]);
+  const pinnedIds = useMemo(() => new Set(pinned.map((c) => c.id)), [pinned]);
+
+  const pin = (c: Ny511Camera) => {
+    map.closePopup();
+    setPinned((prev) => (prev.some((p) => p.id === c.id) ? prev : [...prev, c].slice(-MAX_CAMERA_PINS)));
+  };
+  const unpin = (id: string) => setPinned((prev) => prev.filter((p) => p.id !== id));
+
   return (
     <>
       {shown && <FeedProblem map={map} label="DOT cameras" status={data.cameras_status} fetchError={error} />}
-      {(data.cameras ?? []).map((c) => (
+      {(data.cameras ?? []).filter((c) => !pinnedIds.has(c.id)).map((c) => (
         <Marker key={c.id} position={[c.lat, c.lon]} icon={cameraIcon()}>
           <Popup minWidth={260} maxWidth={340}>
             <div className="space-y-1">
@@ -395,14 +410,32 @@ function DotCameraLayer() {
               {c.roadway && <div className="text-xs text-ink-muted">{c.roadway}{c.direction && c.direction !== "Unknown" ? ` · ${c.direction}` : ""}</div>}
               {c.image_url && (
                 // Popup content mounts on open, so the timestamp busts the cache per open.
-                // eslint-disable-next-line @next/next/no-img-element
-                <img src={`${c.image_url}?t=${Date.now()}`} alt={`Camera: ${c.name}`} className="w-full rounded border border-line" loading="lazy" />
+                <button type="button" onClick={() => pin(c)} title="Pin this camera to the map" className="block w-full p-0 border-0 bg-transparent cursor-pointer">
+                  {/* eslint-disable-next-line @next/next/no-img-element */}
+                  <img src={`${c.image_url}?t=${Date.now()}`} alt={`Camera: ${c.name}`} className="w-full rounded border border-line" loading="lazy" />
+                </button>
               )}
-              <div className="text-[10px] text-ink-muted">Snapshot: 511NY / NYSDOT</div>
+              <div className="text-[10px] text-ink-muted">
+                Click the image to pin {c.video_url ? "the live feed" : "it"} to the map · 511NY / NYSDOT
+              </div>
             </div>
           </Popup>
         </Marker>
       ))}
+      {/* Players only exist while the overlay is on, so hiding it stops every stream. */}
+      {shown && pinned.map((c) => (
+        <Marker key={`pin-${c.id}`} position={[c.lat, c.lon]} icon={cameraIcon()} zIndexOffset={300}>
+          <Tooltip permanent interactive direction="top" offset={[0, -8]} opacity={1} className="drb-cam-pin">
+            <div className="w-[192px]">
+              <div className="flex items-center gap-1 px-1.5 h-4">
+                <span className="flex-1 truncate text-[10px] leading-4 text-ink-2" title={c.name}>{c.name}</span>
+                <button type="button" onClick={() => unpin(c.id)} aria-label={`Unpin ${c.name}`} className="text-ink-muted hover:text-ink text-xs leading-none px-0.5">×</button>
+              </div>
+              <CameraFeed camera={c} className="block w-[192px] h-[108px] object-cover bg-black rounded-b" />
+            </div>
+          </Tooltip>
+        </Marker>
+      ))}
     </>
   );
 }

drb-frontend/components/SdrSettings.tsx

@@ -0,0 +1,243 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import { c2api } from "@/lib/c2api";
+import type { NodeRecord, SdrDevice } from "@/lib/types";
+
+// node-26#9 / #11. OP25 always has exactly one SDR (pinned by serial, or the
+// first one found). Every other SDR runs the next enabled service, top first;
+// a service can be pinned to the SDR that carries its antenna.
+const MODES: { mode: string; name: string; hint: string }[] = [
+  { mode: "adsb", name: "ADS-B", hint: "Aircraft · 1090 MHz" },
+  { mode: "ais", name: "AIS", hint: "Vessels · 162 MHz" },
+];
+
+type Row = { mode: string; enabled: boolean; pin: string };
+
+function rowsFrom(priority: string[], pins: Record<string, string>): Row[] {
+  const known = priority.filter((m) => MODES.some((x) => x.mode === m));
+  return [
+    ...known.map((mode) => ({ mode, enabled: true, pin: pins[mode] ?? "" })),
+    ...MODES.filter((x) => !known.includes(x.mode)).map((x) => ({ mode: x.mode, enabled: false, pin: pins[x.mode] ?? "" })),
+  ];
+}
+
+const selectClass =
+  "bg-gray-800 border border-gray-700 rounded px-2 py-1 text-gray-200 text-xs focus:outline-none focus:border-indigo-500 disabled:opacity-60 max-w-[13rem]";
+
+function DeviceSelect({
+  value, devices, devicesKnown, autoLabel, label, disabled, onChange,
+}: {
+  value: string;
+  devices: SdrDevice[];
+  devicesKnown: boolean;
+  autoLabel: string;
+  label: string;
+  disabled: boolean;
+  onChange: (serial: string) => void;
+}) {
+  const known = devices.some((d) => d.serial === value);
+  return (
+    <select aria-label={label} value={value} disabled={disabled} onChange={(e) => onChange(e.target.value)} className={selectClass}>
+      <option value="">{autoLabel}</option>
+      {devices.map((d) => (
+        <option key={`${d.index}-${d.serial}`} value={d.serial ?? ""} disabled={!d.serial}>
+          SDR {d.index + 1} · serial {d.serial ?? "unknown"}{d.duplicate_serial ? " (shared serial!)" : ""}
+        </option>
+      ))}
+      {value && !known && (
+        <option value={value}>serial {value} ({devicesKnown ? "not plugged in" : "not reported"})</option>
+      )}
+    </select>
+  );
+}
+
+export function SdrSettings({ node, canEdit }: { node: NodeRecord; canEdit: boolean }) {
+  const priority = node.secondary_sdr_priority ?? [];
+  const pins = node.sdr_pins ?? {};
+  // null/absent = the node has never reported (older firmware, container down
+  // at checkin): unknown, not "nothing running" (server-26#187).
+  const reported = node.secondary_sdr_running != null;
+  const running = node.secondary_sdr_running ?? [];
+  const devices = node.sdr_devices ?? [];
+  const devicesKnown = reported && node.sdr_devices != null;
+
+  const [rows, setRows] = useState<Row[]>(() => rowsFrom(priority, pins));
+  const [op25Pin, setOp25Pin] = useState(pins.op25 ?? "");
+  const [dirty, setDirty] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [message, setMessage] = useState<string | null>(null);
+
+  // Follow the node's live checkin unless there are unsaved edits.
+  const serverKey = JSON.stringify([priority, pins]);
+  useEffect(() => {
+    if (dirty) return;
+    const [p, pn] = JSON.parse(serverKey) as [string[], Record<string, string>];
+    setRows(rowsFrom(p, pn));
+    setOp25Pin(pn.op25 ?? "");
+  }, [serverKey, dirty]);
+
+  function edit(next: Row[]) {
+    setRows(next);
+    setDirty(true);
+    setMessage(null);
+  }
+
+  function move(i: number, delta: number) {
+    const next = [...rows];
+    [next[i], next[i + delta]] = [next[i + delta], next[i]];
+    edit(next);
+  }
+
+  const pinned = [op25Pin, ...rows.map((r) => r.pin)].filter(Boolean);
+  const clash = new Set(pinned).size !== pinned.length;
+  const op25Moving = op25Pin !== (pins.op25 ?? "");
+
+  async function save() {
+    setSaving(true);
+    setMessage(null);
+    try {
+      const nextPins: Record<string, string | null> = { op25: op25Pin || null };
+      rows.forEach((r) => { nextPins[r.mode] = r.pin || null; });
+      await c2api.updateNode(node.node_id, {
+        secondary_sdr_priority: rows.filter((r) => r.enabled).map((r) => r.mode),
+        sdr_pins: nextPins,
+      });
+      setDirty(false);
+      setMessage("Sent to the node. Status updates when it checks in.");
+    } catch (err) {
+      setMessage(err instanceof Error ? err.message : "Save failed.");
+    } finally {
+      setSaving(false);
+    }
+  }
+
+  let rank = 0;
+
+  return (
+    <section>
+      <h2 className="text-sm font-semibold text-gray-400 uppercase tracking-wider mb-1">SDRs</h2>
+      <p className="text-xs text-gray-500 font-mono mb-3">
+        {devicesKnown
+          ? `This node reports ${devices.length} SDR${devices.length === 1 ? "" : "s"}.`
+          : "This node hasn't reported its SDRs yet."}
+      </p>
+
+      <div className="bg-gray-900 border border-gray-800 rounded-lg divide-y divide-gray-800 font-mono text-sm">
+        <div className="flex flex-wrap items-center gap-3 px-4 py-2.5">
+          <div className="flex-1 min-w-0">
+            <div className="text-gray-200">OP25 SDR</div>
+            <div className="text-xs text-gray-500">
+              {op25Moving
+                ? "Saving restarts OP25 on the selected SDR."
+                : node.op25_sdr_serial
+                  ? `Using serial ${node.op25_sdr_serial}`
+                  : "P25 / analog scanning"}
+            </div>
+          </div>
+          <DeviceSelect
+            value={op25Pin}
+            devices={devices}
+            devicesKnown={devicesKnown}
+            autoLabel="Automatic (first SDR)"
+            label="OP25 SDR"
+            disabled={!canEdit}
+            onChange={(v) => { setOp25Pin(v); setDirty(true); setMessage(null); }}
+          />
+        </div>
+
+        {rows.map((row, i) => {
+          const meta = MODES.find((x) => x.mode === row.mode)!;
+          const pinMissing = devicesKnown && !!row.pin && !devices.some((d) => d.serial === row.pin);
+          const state = !row.enabled
+            ? "Off"
+            : dirty
+              ? "Unsaved"
+              : !reported
+                ? "Not reported"
+                : running.includes(row.mode)
+                  ? "Running"
+                  : pinMissing
+                    ? "Pinned SDR missing"
+                    : "Waiting for SDR";
+          return (
+            <div key={row.mode} className="flex flex-wrap items-center gap-3 px-4 py-2.5">
+              <span className="w-4 text-right text-gray-600 text-xs">{row.enabled ? ++rank : ""}</span>
+              <input
+                type="checkbox"
+                checked={row.enabled}
+                disabled={!canEdit}
+                aria-label={`Enable ${meta.name}`}
+                onChange={(e) => edit(rows.map((r, j) => (j === i ? { ...r, enabled: e.target.checked } : r)))}
+                className="rounded bg-gray-800 border-gray-700 text-indigo-600 focus:ring-indigo-500 focus:ring-offset-gray-900"
+              />
+              <div className="flex-1 min-w-[7rem]">
+                <div className="text-gray-200">{meta.name}</div>
+                <div className="text-xs text-gray-500">{meta.hint}</div>
+              </div>
+              <DeviceSelect
+                value={row.pin}
+                devices={devices}
+                devicesKnown={devicesKnown}
+                autoLabel="Any spare SDR"
+                label={`${meta.name} SDR`}
+                disabled={!canEdit}
+                onChange={(v) => edit(rows.map((r, j) => (j === i ? { ...r, pin: v } : r)))}
+              />
+              {canEdit && (
+                <div className="flex gap-1">
+                  <button
+                    type="button"
+                    onClick={() => move(i, -1)}
+                    disabled={i === 0}
+                    aria-label={`Move ${meta.name} up`}
+                    className="w-7 h-7 rounded bg-gray-800 hover:bg-gray-700 text-gray-300 disabled:opacity-30"
+                  >
+                    ▲
+                  </button>
+                  <button
+                    type="button"
+                    onClick={() => move(i, 1)}
+                    disabled={i === rows.length - 1}
+                    aria-label={`Move ${meta.name} down`}
+                    className="w-7 h-7 rounded bg-gray-800 hover:bg-gray-700 text-gray-300 disabled:opacity-30"
+                  >
+                    ▼
+                  </button>
+                </div>
+              )}
+              <span className={`w-32 text-right text-xs ${state === "Running" ? "text-green-400" : "text-gray-500"}`}>
+                {state}
+              </span>
+            </div>
+          );
+        })}
+      </div>
+
+      <p className="text-xs text-gray-500 font-mono mt-2">
+        Every SDR besides OP25&apos;s runs the next enabled service, top first. Pin a service to the SDR with its
+        antenna, or leave it on &quot;Any spare SDR&quot;.
+      </p>
+      {devices.some((d) => d.duplicate_serial) && (
+        <p className="text-xs text-red-400 font-mono mt-2">
+          Two SDRs share a serial number, so they can&apos;t be told apart. Give each a unique serial (rtl_eeprom -s)
+          before pinning.
+        </p>
+      )}
+      {clash && <p className="text-xs text-red-400 font-mono mt-2">Two services are pinned to the same SDR.</p>}
+
+      {canEdit && (
+        <div className="flex items-center gap-3 mt-3">
+          <button
+            onClick={save}
+            disabled={!dirty || saving || clash}
+            className="px-4 py-2 bg-indigo-700 hover:bg-indigo-600 disabled:opacity-50 text-white rounded-lg text-sm font-mono transition-colors"
+          >
+            {saving ? "Saving…" : "Save"}
+          </button>
+          {message && <span className="text-xs text-gray-500 font-mono">{message}</span>}
+        </div>
+      )}
+    </section>
+  );
+}

drb-frontend/components/SecondarySdrPriority.tsx

@@ -1,154 +0,0 @@
-"use client";
-
-import { useEffect, useState } from "react";
-import { c2api } from "@/lib/c2api";
-import type { NodeRecord } from "@/lib/types";
-
-// node-26#9. OP25 always keeps its own SDR; every other SDR on the node runs
-// the next enabled item here, top first — so a 3-SDR node runs both.
-const MODES: { mode: string; name: string; hint: string }[] = [
-  { mode: "adsb", name: "ADS-B", hint: "Aircraft · 1090 MHz" },
-  { mode: "ais", name: "AIS", hint: "Vessels · 162 MHz" },
-];
-
-type Row = { mode: string; enabled: boolean };
-
-function rowsFrom(priority: string[]): Row[] {
-  return [
-    ...priority.filter((m) => MODES.some((x) => x.mode === m)).map((mode) => ({ mode, enabled: true })),
-    ...MODES.filter((x) => !priority.includes(x.mode)).map((x) => ({ mode: x.mode, enabled: false })),
-  ];
-}
-
-export function SecondarySdrPriority({ node, canEdit }: { node: NodeRecord; canEdit: boolean }) {
-  const priority = node.secondary_sdr_priority ?? [];
-  // null/absent = the node has never reported (older firmware, container down
-  // at checkin): unknown, not "nothing running" (server-26#187).
-  const reported = node.secondary_sdr_running != null;
-  const running = node.secondary_sdr_running ?? [];
-  const [rows, setRows] = useState<Row[]>(() => rowsFrom(priority));
-  const [dirty, setDirty] = useState(false);
-  const [saving, setSaving] = useState(false);
-  const [message, setMessage] = useState<string | null>(null);
-
-  // Follow the node's live checkin unless there are unsaved edits.
-  const priorityKey = priority.join(",");
-  useEffect(() => {
-    if (!dirty) setRows(rowsFrom(priorityKey ? priorityKey.split(",") : []));
-  }, [priorityKey, dirty]);
-
-  function edit(next: Row[]) {
-    setRows(next);
-    setDirty(true);
-    setMessage(null);
-  }
-
-  function move(i: number, delta: number) {
-    const next = [...rows];
-    [next[i], next[i + delta]] = [next[i + delta], next[i]];
-    edit(next);
-  }
-
-  async function save() {
-    setSaving(true);
-    setMessage(null);
-    try {
-      await c2api.updateNode(node.node_id, {
-        secondary_sdr_priority: rows.filter((r) => r.enabled).map((r) => r.mode),
-      });
-      setDirty(false);
-      setMessage("Sent to the node. Status updates when it checks in.");
-    } catch (err) {
-      setMessage(err instanceof Error ? err.message : "Save failed.");
-    } finally {
-      setSaving(false);
-    }
-  }
-
-  // Only quote a count the node actually sent alongside its running list; a
-  // bare sdr_count may be the Firestore default, not a report.
-  const sdrCount = reported ? node.sdr_count : undefined;
-  let rank = 0;
-
-  return (
-    <section>
-      <h2 className="text-sm font-semibold text-gray-400 uppercase tracking-wider mb-1">Secondary SDRs</h2>
-      <p className="text-xs text-gray-500 font-mono mb-3">
-        OP25 always keeps its own SDR. Every other SDR runs the next enabled item, top first.
-        {" "}
-        {sdrCount != null
-          ? `This node reports ${sdrCount} SDR${sdrCount === 1 ? "" : "s"} (${Math.max(sdrCount - 1, 0)} spare).`
-          : "This node hasn't reported its SDRs yet."}
-      </p>
-      <div className="bg-gray-900 border border-gray-800 rounded-lg divide-y divide-gray-800 font-mono text-sm">
-        {rows.map((row, i) => {
-          const meta = MODES.find((x) => x.mode === row.mode)!;
-          const isRunning = running.includes(row.mode);
-          const state = !row.enabled
-            ? "Off"
-            : dirty
-              ? "Unsaved"
-              : !reported
-                ? "Not reported"
-                : isRunning
-                  ? "Running"
-                  : "Waiting for SDR";
-          return (
-            <div key={row.mode} className="flex items-center gap-3 px-4 py-2.5">
-              <span className="w-4 text-right text-gray-600 text-xs">{row.enabled ? ++rank : ""}</span>
-              <input
-                type="checkbox"
-                checked={row.enabled}
-                disabled={!canEdit}
-                aria-label={`Enable ${meta.name}`}
-                onChange={(e) => edit(rows.map((r, j) => (j === i ? { ...r, enabled: e.target.checked } : r)))}
-                className="rounded bg-gray-800 border-gray-700 text-indigo-600 focus:ring-indigo-500 focus:ring-offset-gray-900"
-              />
-              <div className="flex-1 min-w-0">
-                <div className="text-gray-200">{meta.name}</div>
-                <div className="text-xs text-gray-500">{meta.hint}</div>
-              </div>
-              {canEdit && (
-                <div className="flex gap-1">
-                  <button
-                    type="button"
-                    onClick={() => move(i, -1)}
-                    disabled={i === 0}
-                    aria-label={`Move ${meta.name} up`}
-                    className="w-7 h-7 rounded bg-gray-800 hover:bg-gray-700 text-gray-300 disabled:opacity-30"
-                  >
-                    ▲
-                  </button>
-                  <button
-                    type="button"
-                    onClick={() => move(i, 1)}
-                    disabled={i === rows.length - 1}
-                    aria-label={`Move ${meta.name} down`}
-                    className="w-7 h-7 rounded bg-gray-800 hover:bg-gray-700 text-gray-300 disabled:opacity-30"
-                  >
-                    ▼
-                  </button>
-                </div>
-              )}
-              <span className={`w-28 text-right text-xs ${state === "Running" ? "text-green-400" : "text-gray-500"}`}>
-                {state}
-              </span>
-            </div>
-          );
-        })}
-      </div>
-      {canEdit && (
-        <div className="flex items-center gap-3 mt-3">
-          <button
-            onClick={save}
-            disabled={!dirty || saving}
-            className="px-4 py-2 bg-indigo-700 hover:bg-indigo-600 disabled:opacity-50 text-white rounded-lg text-sm font-mono transition-colors"
-          >
-            {saving ? "Saving…" : "Save priority"}
-          </button>
-          {message && <span className="text-xs text-gray-500 font-mono">{message}</span>}
-        </div>
-      )}
-    </section>
-  );
-}

drb-frontend/lib/c2api.ts

@@ -37,7 +37,12 @@ export const c2api = {
     request(`/nodes/${nodeId}/override/reset`, { method: "POST" }),
   updateNode: (
     id: string,
-    body: { node_type?: string; enforce_override_timeout?: boolean; secondary_sdr_priority?: string[] },
+    body: {
+      node_type?: string;
+      enforce_override_timeout?: boolean;
+      secondary_sdr_priority?: string[];
+      sdr_pins?: Record<string, string | null>;
+    },
   ) =>
     request(`/nodes/${id}`, { method: "PATCH", body: JSON.stringify(body) }),
 

drb-frontend/lib/types.ts

@@ -58,6 +58,12 @@ export interface NodeRecord {
   secondary_sdr_priority?: string[];
   /** What the node's last checkin reported actually running. */
   secondary_sdr_running?: string[] | null;
+  /** node-26#11: service (op25/adsb/ais) -> dongle serial; absent = automatic. */
+  sdr_pins?: Record<string, string>;
+  /** Dongles the node detected, from its checkin; null/absent = not reported. */
+  sdr_devices?: SdrDevice[] | null;
+  /** The dongle OP25 is actually using, per the node. */
+  op25_sdr_serial?: string | null;
   sdr_count?: number | null; // null = never reported
   enforce_override_timeout?: boolean;
   is_overridden?: boolean;
@@ -65,6 +71,13 @@ export interface NodeRecord {
   override_timeout_at?: string | null;
 }
 
+export interface SdrDevice {
+  index: number;
+  serial: string | null;
+  name: string;
+  duplicate_serial: boolean;
+}
+
 export interface AircraftTrack {
   icao: string;
   org_id?: string;

drb-frontend/package.json

@@ -13,6 +13,7 @@
     "react": "^18.3.0",
     "react-dom": "^18.3.0",
     "firebase": "^10.12.0",
+    "hls.js": "^1.5.0",
     "leaflet": "^1.9.4",
 "react-leaflet": "^4.2.1",
     "react-markdown": "^9.0.1"

drb-frontend/tailwind.config.ts

@@ -1,5 +1,8 @@
 import type { Config } from "tailwindcss";
 
+const tok = (name: string) =>
+  `color-mix(in srgb, var(--${name}) calc(<alpha-value> * 100%), transparent)`;
+
 const config: Config = {
   content: [
     "./app/**/*.{ts,tsx}",
@@ -15,24 +18,27 @@ const config: Config = {
       // Semantic tokens — defined as CSS custom properties in app/globals.css on
       // :root (light) and .dark (dark). Components must use these names, never a
       // raw gray-9xx, so a theme is one variable block rather than an override sheet.
+      // Wrapped in color-mix so opacity modifiers (bg-surface/90, bg-accent/15)
+      // work — a bare var() hex gives Tailwind nothing to apply alpha to, and the
+      // class silently generates no rule (map overlays rendered see-through).
       colors: {
-        page:        "var(--page)",
-        surface:     "var(--surface)",
-        raised:      "var(--raised)",
-        line:        "var(--line)",
-        "line-strong": "var(--line-strong)",
+        page:          tok("page"),
+        surface:       tok("surface"),
+        raised:        tok("raised"),
+        line:          tok("line"),
+        "line-strong": tok("line-strong"),
         ink: {
-          DEFAULT: "var(--ink)",
-          2:       "var(--ink-2)",
-          muted:   "var(--ink-muted)",
+          DEFAULT: tok("ink"),
+          2:       tok("ink-2"),
+          muted:   tok("ink-muted"),
         },
-        accent:         "var(--accent)",
-        "sev-moderate": "var(--sev-moderate)",
-        "sev-major":    "var(--sev-major)",
-        "map-bg":    "var(--map-bg)",
-        "map-block": "var(--map-block)",
-        "map-road":  "var(--map-road)",
-        "map-water": "var(--map-water)",
+        accent:         tok("accent"),
+        "sev-moderate": tok("sev-moderate"),
+        "sev-major":    tok("sev-major"),
+        "map-bg":    tok("map-bg"),
+        "map-block": tok("map-block"),
+        "map-road":  tok("map-road"),
+        "map-water": tok("map-water"),
       },
       // Marketing/product type scale — used by the (marketing) surface and
       // settings shell so headings read as a deliberate hierarchy rather than