feat: Filament Track Switch (H2-series O2L-FTS) support

The Filament Track Switch (H2-series accessory, product code O2L-FTS) feeds
every AMS to both extruders through a two-track switch. Port full support
across the device layer, project config, and GUI.

Device / config:
- Model the switch-aware AMS binding (the set of extruders an AMS can feed
  and which input track A/B feeds it), switch readiness, the O2L-FTS firmware
  module, and the fun2 capability bit for checking a slice against installed
  hardware.
- Register has_filament_switcher and enable_filament_dynamic_map as project
  config that persists with the project and restores from a saved 3mf, and
  force both back to false on every project/printer/CLI load path. Live
  device sync is the only thing that sets them true.

GUI:
- Sidebar sync activates the switch from live device state, attributes each
  AMS to the extruder its input track feeds, shows a floating status icon
  (ready / not-calibrated), and surfaces a one-time tip / not-calibrated
  warning.
- Send dialog gains a non-blocking slice-vs-hardware mismatch warning and a
  blocking error when a slice needs dynamic nozzle mapping but the switch is
  missing or not set up.
- AMS load/unload guards, AMS-view routing glyph + un-calibrated banner +
  hidden external-spool road, and mapping-popup external-spool lockout.
- Filament pickers collapse the per-extruder split into a single deduplicated
  "AMS filaments" group with a smart-assign toggle when the switch is ready.
- Firmware-upgrade panel lists the O2L-FTS accessory and its version.
- Device-provided filament-change steps (ams.cfs) drive the change-step
  display when firmware sends them, including the three switch steps.
- "Load current filament" asks which extruder to feed via a
  FeedDirectionDialog when the switch is calibrated.

Inert without the accessory: every path is gated on the switch being
installed (MQTT aux bit 29, default off) or ready, both project flags default
false, and the per-extruder AMS attribution is byte-identical, so AMS state,
the send/load UI, and sliced g-code are unchanged for every printer that does
not report a Filament Track Switch.

src/slic3r/GUI/Widgets/FilamentLoad.cpp

@@ -3,6 +3,7 @@
 #include "../BitmapCache.hpp"
 #include "../I18N.hpp"
 #include "../GUI_App.hpp"
+#include "../DeviceCore/DevFilaSystem.h"
 
 #include <wx/simplebook.h>
 #include <wx/dcgraph.h>
@@ -37,6 +38,28 @@ FilamentLoad::FilamentLoad(wxWindow* parent, wxWindowID id, const wxPoint& pos,
     //FILAMENT_CHANGE_STEP_STRING[FilamentStep::STEP_FEED_FILAMENT]       = _L("Feed Filament");
     FILAMENT_CHANGE_STEP_STRING[FilamentStep::STEP_CONFIRM_EXTRUDED]    = _L("Confirm extruded");
     FILAMENT_CHANGE_STEP_STRING[FilamentStep::STEP_CHECK_POSITION]      = _L("Check filament location");
+
+    // Orca: labels for the device-numbered steps carried by the AMS (ams.cfs). Overlapping steps
+    // reuse the wording above so the current-step highlight (driven by the legacy ams_status_sub
+    // path) still text-matches; the switch/hotend/cooling and Filament Track Switch steps are new.
+    // STEP_CHECK_POSITION and STEP_CONFIRM_EXTRUDED share code 0x08, so CONFIRM is assigned first
+    // and CHECK_POSITION last, leaving code 0x08 mapped to "Check filament location" as on device.
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_IDLE]                = _L("Idling...");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PAUSE]               = _L("Pause");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_HEAT_NOZZLE]         = _L("Heat the nozzle");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_CUT_FILAMENT]        = _L("Cut filament");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PULL_CURR_FILAMENT]  = _L("Pull back the current filament");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PUSH_NEW_FILAMENT]   = _L("Push new filament into extruder");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_GRAB_NEW_FILAMENT]   = _L("Grab new filament");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PURGE_OLD_FILAMENT]  = _L("Purge old filament");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_SWITCH_EXTRUDER]     = _L("Switch") + " " + _L("extruder");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_SWITCH_HOTEND]       = _L("Switch") + " " + _L("hotend");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_AMS_FILA_COOLING]    = _L("Wait for AMS cooling");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PUSH_SWITCHER_FILA]  = _L("Switch current filament at Filament Track Switch");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_PULL_SWITCHER_FILA]  = _L("Pull back current filament at Filament Track Switch");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_SWITCHER_SWITCH]     = _L("Switch track at Filament Track Switch");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_CONFIRM_EXTRUDED]    = _L("Confirm extruded");
+    DEV_FILAMENT_CHANGE_STEP_STRING[DevFilamentStep::STEP_CHECK_POSITION]      = _L("Check filament location");
 }
 
 void FilamentLoad::SetFilamentStep(FilamentStep item_idx, FilamentStepType f_type)
@@ -124,11 +147,34 @@ void FilamentLoad::SetFilamentStep(FilamentStep item_idx, FilamentStepType f_typ
     step_control->SetSlotInformation(slot_info);
 }
 
-void FilamentLoad::SetupSteps(bool has_fila_to_switch) {
+void FilamentLoad::SetupSteps(MachineObject* obj_, bool has_fila_to_switch) {
     m_filament_load_steps->DeleteAllItems();
     m_filament_unload_steps->DeleteAllItems();
     m_filament_vt_load_steps->DeleteAllItems();
 
+    // Orca: newer firmware sends the exact change-step sequence through the AMS (ams.cfs). When
+    // present, build the visible steps straight from that list and skip the hardcoded per-model
+    // sequences below. Inert on current firmware: the list is empty, so this branch is skipped and
+    // the legacy logic runs unchanged.
+    if (obj_ && obj_->GetFilaSystem() && !obj_->GetFilaSystem()->GetFilamentChangeSteps().empty()) {
+        const auto& steps = obj_->GetFilaSystem()->GetFilamentChangeSteps();
+        for (auto step : steps) {
+            auto iter = DEV_FILAMENT_CHANGE_STEP_STRING.find(step);
+            if (iter == DEV_FILAMENT_CHANGE_STEP_STRING.end()) {
+                BOOST_LOG_TRIVIAL(error) << "Unknown filament change step: " << static_cast<int>(step);
+                continue;
+            }
+
+            m_filament_load_steps->AppendItem(iter->second);
+            m_filament_unload_steps->AppendItem(iter->second);
+            m_filament_vt_load_steps->AppendItem(iter->second);
+        }
+
+        Layout();
+        Fit();
+        return;
+    }
+
     if (m_ams_model == AMSModel::GENERIC_AMS || m_ext_model == AMSModel::N3F_AMS || m_ext_model == AMSModel::N3S_AMS) {
         if (has_fila_to_switch) {
             m_filament_load_steps->AppendItem(FILAMENT_CHANGE_STEP_STRING[FilamentStep::STEP_HEAT_NOZZLE]);