## Summary

Follow-up to the feature/OrcaSonar review. Scopes the new behavior to the
OrcaSonar agent, fixes several AMS-sync and lifecycle bugs, and makes the
MQTT tests run in CI. Non-OrcaSonar agents keep their existing behavior.

## Changes

Discovery
- Gate the background SSDP scan to a configured OrcaSonar machine instead of
  running for every non-BBL profile; drive discovery on demand from the
  machine-select popup and back off idle rounds from 5s to 60s.
- Add NSLocalNetworkUsageDescription and NSBonjourServices to both macOS
  Info.plist templates.

AMS sync
- Resolve id-less printer-set trays by material type in get_ams_cobox_infos
  and the sidebar badge loop, matching sync_ams_list, so combo arrays and
  badges stay aligned.
- Keep a printer-set tray that resolved by type out of the "unknown or
  incompatible filaments" dialog.

AMS device UI
- Gate the "Empty" tray classification, and the editable temperature fields,
  to the OrcaSonar agent; Bambu keeps "?" and read-only presets.
- Validate AMS material temps on confirm: reject out-of-range values and
  min > max before the command is sent.

Storage tab
- Bind the show/hide handler on the panel's ancestors (StoragePanel and
  MonitorPanel) and unbind on destruction, so the Bambu file system stops
  when the tab is left.

Transport
- Load /etc/ssl/cert.pem on macOS in add_platform_root_certificates, after
  set_default_verify_paths.
- Release lifecycle_mutex before start()'s connect wait so stop() can cancel
  the attempt and signal completion instead of stalling the UI thread.

Localization
- Add OrcaFilesPanel.cpp to list.txt and regenerate the catalogs.

## Tests
- Un-hide the loopback MockBroker integration tests (ephemeral port, no
  network) so ctest registers and runs them.
- Mock broker tracks SUBSCRIBE/UNSUBSCRIBE and delivers push_report only to a
  subscribed topic; the reconnect test asserts the re-SUBSCRIBE.
- Add bbl empty-tray cases, an AMS combo-alignment case, and unknowns
  assertions to the AMS sync tests.

src/slic3r/Utils/OrcaPrinterAgent.cpp

@@ -397,8 +397,9 @@ private:
         return true;
     }
 
-    void ssdp_round()
+    bool ssdp_round()
     {
+        bool emitted = false;
         namespace asio = boost::asio;
         using asio::ip::udp;
         try {
@@ -436,8 +437,10 @@ private:
                         if (make_machine_alive_json(usn, sender.address().to_string(), location, machine_alive)) {
                             nlohmann::json machine      = nlohmann::json::parse(machine_alive);
                             const std::string device_id = machine["dev_id"].get<std::string>();
-                            if (seen_ids.insert(device_id).second && m_emit)
+                            if (seen_ids.insert(device_id).second && m_emit) {
                                 m_emit(machine_alive);
+                                emitted = true;
+                            }
                         }
                     }
                 } else if (error != asio::error::would_block && error != asio::error::try_again) {
@@ -450,14 +453,19 @@ private:
         } catch (const std::exception& error) {
             BOOST_LOG_TRIVIAL(warning) << "OrcaSonarDiscovery: SSDP round failed: " << error.what();
         }
+        return emitted;
     }
 
     void browse_loop()
     {
+        // Idle rounds back off to avoid a permanent 8s M-SEARCH when no OrcaSonar is present.
+        std::chrono::seconds interval(5);
         while (m_running.load()) {
-            ssdp_round();
+            const bool found = ssdp_round();
             std::unique_lock<std::mutex> lock(m_wait_mutex);
-            m_wait_cv.wait_for(lock, std::chrono::seconds(5), [this] { return !m_running.load(); });
+            m_wait_cv.wait_for(lock, found ? std::chrono::seconds(5) : interval, [this] { return !m_running.load(); });
+            interval = found ? std::chrono::seconds(5)
+                             : std::chrono::seconds(std::min<long long>(interval.count() * 2, 60));
         }
     }