Live map: plugin/mod chunk+player sync, admin panel Live Map section, launcher transport

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DjMbLQujBHunCCu5GpsHaT

integrations/common/src/main/java/net/scopenet/integration/PanelClient.java

@@ -54,6 +54,41 @@ public final class PanelClient {
         }
     }
 
+    public HttpClient http() { return client; }
+    public Settings settings() { return settings; }
+
+    private static JsonObject object(HttpResponse<String> response) throws IOException {
+        if (response.statusCode() < 200 || response.statusCode() >= 300) {
+            String msg = "HTTP " + response.statusCode();
+            try {
+                JsonObject err = JsonParser.parseString(response.body()).getAsJsonObject();
+                if (err.has("message")) msg = err.get("message").getAsString();
+                else if (err.has("error")) msg = err.get("error").getAsString();
+            } catch (Exception ignored) {}
+            throw new HttpFailure(response.statusCode(), msg);
+        }
+        try { return JsonParser.parseString(response.body()).getAsJsonObject(); }
+        catch (RuntimeException e) { throw new IOException("Invalid panel response", e); }
+    }
+
+    /** GET an endpoint under /api/server/v1/ that returns a JSON object. */
+    public JsonObject get(String endpoint) throws IOException, InterruptedException {
+        HttpRequest request = HttpRequest.newBuilder(URI.create(settings.panel() + "/api/server/v1/" + endpoint))
+                .timeout(Duration.ofSeconds(15))
+                .header("Authorization", "Bearer " + settings.token()).GET().build();
+        return object(client.send(request, HttpResponse.BodyHandlers.ofString()));
+    }
+
+    /** POST raw bytes (live map chunk batches and level.dat). */
+    public JsonObject postBytes(String endpoint, byte[] body) throws IOException, InterruptedException {
+        HttpRequest request = HttpRequest.newBuilder(URI.create(settings.panel() + "/api/server/v1/" + endpoint))
+                .timeout(Duration.ofSeconds(60))
+                .header("Authorization", "Bearer " + settings.token())
+                .header("Content-Type", "application/octet-stream")
+                .POST(HttpRequest.BodyPublishers.ofByteArray(body)).build();
+        return object(client.send(request, HttpResponse.BodyHandlers.ofString()));
+    }
+
     public JsonObject post(String endpoint, JsonObject payload) throws IOException, InterruptedException {
         return postElement(endpoint, payload).getAsJsonObject();
     }