app/globals.css

@@ -68,6 +68,40 @@ body {
   color: #cbd5e1;
 }
 
+/* ISS-010 (v0.18.0) — Relocate row inside the airport popup (plain HTML, not React). */
+.popup-relocate {
+  margin-top: 8px;
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  flex-wrap: wrap;
+}
+
+.popup-relocate select {
+  font-size: 12px;
+  padding: 3px 6px;
+  border-radius: 4px;
+  border: 1px solid rgba(148, 163, 184, 0.4);
+}
+
+.popup-relocate button {
+  font-size: 12px;
+  padding: 3px 10px;
+  border-radius: 4px;
+  border: 1px solid rgba(148, 163, 184, 0.4);
+  cursor: pointer;
+}
+
+.popup-relocate button:disabled {
+  opacity: 0.5;
+  cursor: default;
+}
+
+[data-testid='airport-popup-relocate-status'] {
+  font-size: 11px;
+  color: #334155;
+}
+
 /* v0.9.0 — single-screen 3-pane shell: left Assets / center map / right Jobs & Market */
 .app-shell {
   display: grid;

app/page.tsx

@@ -44,8 +44,10 @@ export default function Home() {
   return (
     <div className="app-shell">
       <LeftPane state={state} loading={loading} error={error} onRefresh={refresh} onHover={setHovered} onError={onError} />
-      {/* v0.11.0 — the same polled snapshot drives the map's plane markers + route lines */}
-      <Map state={state} hovered={hovered} />
+      {/* v0.11.0 — the same polled snapshot drives the map's plane markers + route lines;
+          ISS-010 (v0.18.0) — applySnapshot lets the airport popup's Relocate row push its
+          action response into the shared state, exactly like RightPane does */}
+      <Map state={state} hovered={hovered} applySnapshot={applySnapshot} />
       <RightPane state={state} loading={loading} applySnapshot={applySnapshot} onHover={setHovered} onError={onError} />
       <ToastStack toasts={toasts} onDismiss={dismiss} />
     </div>

components/Map.tsx

@@ -45,11 +45,14 @@ interface MapProps {
   // ISS-002 (v0.15.0): the side panels' hover target — highlights the matching plane
   // (+ its route leg if flying) or a package's endpoint airports. Null = nothing hovered.
   hovered?: HoverTarget | null;
+  // ISS-010 (v0.18.0): push an action endpoint's full response snapshot into the shared
+  // shell state — same callback RightPane receives, used by the airport popup's Relocate row.
+  applySnapshot: (snapshot: StateSnapshot) => void;
 }
 
 // Named FlightMap (not Map): a component called `Map` would shadow the global
 // Map constructor inside its own body, breaking `new Map(...)` for the airport index.
-export default function FlightMap({ state, hovered }: MapProps) {
+export default function FlightMap({ state, hovered, applySnapshot }: MapProps) {
   const containerRef = useRef<HTMLDivElement>(null);
   const mapRef = useRef<maplibregl.Map | null>(null);
   // /api/airports is fetched at most once per page life: every styledata event
@@ -58,6 +61,12 @@ export default function FlightMap({ state, hovered }: MapProps) {
   // Latest snapshot + airport coordinate index, so the mount effect's styledata wiring
   // and the state-change effect can both push data without prop-drilling into closures.
   const stateRef = useRef<StateSnapshot | null>(null);
+  // ISS-010 (v0.18.0): the shell's applySnapshot is stable (useCallback with no deps), but the
+  // mount effect captures it once — keep a ref so the popup wiring always calls the latest one.
+  const applySnapshotRef = useRef(applySnapshot);
+  useEffect(() => {
+    applySnapshotRef.current = applySnapshot;
+  }, [applySnapshot]);
   const airportsIndexRef = useRef<Map<string, AirportCoord> | null>(null);
   const [airportCount, setAirportCount] = useState<number | null>(null);
   const [styleId, setStyleId] = useState<string>(DEFAULT_STYLE_ID);
@@ -156,16 +165,67 @@ export default function FlightMap({ state, hovered }: MapProps) {
         // deterministic generated weather — no gameplay effects per PLAN.md.
         const w = weatherFor(p.icao);
         const localTime = approxLocalTime(p.lon, Date.now());
-        new maplibregl.Popup({ offset: 10 })
+        // ISS-010 (v0.18.0): Relocate row — grounded planes from the latest snapshot can be
+        // repositioned to this airport via POST /api/planes/{id}/fly (pure repositioning).
+        const st = stateRef.current;
+        const groundedPlanes = st ? st.planes.filter((pl) => pl.status === 'available') : [];
+        const planeLabel = (model: string) => st?.catalog.find((c) => c.model === model)?.label ?? model;
+        const relocateHtml =
+          groundedPlanes.length > 0
+            ? `<select data-testid="airport-popup-plane" aria-label="Plane to relocate here">` +
+              `<option value="">Select a plane\u2026</option>` +
+              groundedPlanes.map(
+                (pl) =>
+                  `<option value="${escapeHtml(pl.id)}">${escapeHtml(planeLabel(pl.model))} \u2014 ${escapeHtml(pl.locationIcao)}</option>`,
+              ).join('') +
+              `</select><button type="button" data-testid="airport-popup-relocate" disabled>Relocate here</button>`
+            : `<span data-testid="airport-popup-no-planes">No grounded planes to relocate.</span>`;
+        const popup = new maplibregl.Popup({ offset: 10 })
           .setLngLat(f.geometry.coordinates as [number, number])
           .setHTML(
             `<div data-testid="airport-popup">` +
               `<strong>${escapeHtml(p.name)}</strong><br/>${escapeHtml(p.icao)}<br/>` +
               `<span data-testid="airport-local-time">${localTime} local (approx)</span><br/>` +
               `<span data-testid="airport-weather">${w.condition}, wind ${w.windDirDeg}\u00B0 / ${w.windKt} kt, vis ${w.visibilityM} m</span>` +
+              `<div class="popup-relocate">` + relocateHtml + `<span data-testid="airport-popup-relocate-status"></span></div>` +
             `</div>`,
           )
           .addTo(map);
+
+        // Popups are plain HTML, not React — the element only exists after addTo, so wire the
+        // controls via querySelector (the select enables the button once a plane is picked).
+        const el = popup.getElement();
+        const select = el?.querySelector<HTMLSelectElement>('[data-testid="airport-popup-plane"]');
+        const button = el?.querySelector<HTMLButtonElement>('[data-testid="airport-popup-relocate"]');
+        // The status span is always in the popup HTML (even with no grounded planes), so it
+        // exists whenever the select/button do.
+        const statusEl = el?.querySelector<HTMLElement>('[data-testid="airport-popup-relocate-status"]');
+        if (select && button && statusEl) {
+          select.addEventListener('change', () => {
+            button.disabled = select.value === '';
+          });
+          button.addEventListener('click', async () => {
+            const planeId = select.value;
+            if (!planeId || button.disabled) return;
+            button.disabled = true;
+            statusEl.textContent = 'Relocating\u2026';
+            try {
+              const res = await fetch(`/api/planes/${planeId}/fly`, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ destIcao: p.icao }),
+                cache: 'no-store',
+              });
+              const data = (await res.json()) as StateSnapshot & { error?: string };
+              if (!res.ok) throw new Error(data.error ?? `HTTP ${res.status}`);
+              applySnapshotRef.current(data); // shared shell state updates immediately, like the panes' runAction
+              statusEl.textContent = 'Relocation started.';
+            } catch (err) {
+              statusEl.textContent = err instanceof Error ? err.message : String(err);
+              button.disabled = false; // allow retry / picking another plane
+            }
+          });
+        }
       };
 
       const onPlaneClick = (e: maplibregl.MapLayerMouseEvent) => {