feat: add generic render segment model

integration/react-native/MapLibreParticleRNTestHost/App.tsx

@@ -14,6 +14,7 @@ import {
   FieldRuntime,
   RendererRuntime,
   type RetainedUnderlayDiagnostics,
+  type RenderSegmentDiagnostics,
   type RuntimeSnapshot,
 } from "@navsea/maplibre-particle-rn";
 import {
@@ -67,6 +68,8 @@ export default function App() {
   const [snapshot, setSnapshot] = useState<RuntimeSnapshot>(initialSnapshot);
   const [retainedSnapshot, setRetainedSnapshot] =
     useState<RetainedUnderlayDiagnostics | null>(null);
+  const [segmentSnapshot, setSegmentSnapshot] =
+    useState<RenderSegmentDiagnostics | null>(null);
   const [mapStatus, setMapStatus] = useState("LOADING");
   const [weatherStatus, setWeatherStatus] = useState("WAITING");
   const [result, setResult] = useState("Waiting for map/style");
@@ -91,6 +94,11 @@ export default function App() {
   const refreshRetained = useCallback(async (tag: number) => {
     setRetainedSnapshot(await RendererRuntime.getRetainedUnderlayDiagnostics(tag));
   }, []);
+  const refreshSegments = useCallback(async (tag: number) => {
+    const value = await RendererRuntime.getRenderSegmentDiagnostics(tag);
+    setSegmentSnapshot(value);
+    setResult(JSON.stringify(value, null, 2));
+  }, []);
   const applyVisualToTag = useCallback(async (tag: number) => {
     const results = await Promise.all([
       FieldRuntime.setParticleCount(tag, Number(visual.count)),
@@ -384,6 +392,28 @@ export default function App() {
                 onPress={() => reactTag != null && void refreshRetained(reactTag)}
               />
             </View>
+            <Text selectable>
+              Segments: {segmentSnapshot == null ? "not read" :
+                `${segmentSnapshot.valid ? "VALID" : "INVALID"} source=${segmentSnapshot.configSource} count=${segmentSnapshot.segmentCount} topology=${segmentSnapshot.topologyRevision}`}
+            </Text>
+            <View style={styles.row}>
+              <Button
+                title="Apply C-R plan"
+                disabled={reactTag == null}
+                onPress={() => reactTag != null && void RendererRuntime.setRenderSegmentPlan(reactTag, {
+                  schemaVersion: 1,
+                  segments: [
+                    { strategy: "CONTINUOUS" },
+                    { strategy: "RETAINED", startLayerId: "darkmap-basemap" },
+                  ],
+                }).then(() => refreshSegments(reactTag))}
+              />
+              <Button
+                title="Fetch Segment Diagnostics"
+                disabled={reactTag == null}
+                onPress={() => reactTag != null && void refreshSegments(reactTag)}
+              />
+            </View>
 
             <Text>QBIN Format</Text>
             <View style={styles.row}>