Merge upstream/main into iXex PR branch (#13086)

Catches the iXex/IDEX parallel-printing branch up to upstream main
(102 commits). Two content conflicts resolved:

- src/libslic3r/Preset.cpp: s_Preset_printer_options — kept upstream's
  new "use_3mf" key and our iMEX printer-capability/mode keys.
- tests/fff_print/test_gcodewriter.cpp: upstream revived the disabled
  suite (#14196), dropping the obsolete [.]-tagged lift() test and its
  config_lift_unlift.ini; kept their set_speed + z_hop tests and appended
  our 10 per-firmware set_pressure_advance/set_temperature scenarios.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/libslic3r/Preset.cpp

@@ -1355,7 +1355,7 @@ static std::vector<std::string> s_Preset_printer_options {
     "cooling_tube_retraction",
     "cooling_tube_length", "high_current_on_filament_swap", "parking_pos_retraction", "extra_loading_move", "wipe_tower_type", "purge_in_prime_tower", "enable_filament_ramming", "tool_change_on_wipe_tower",
     "z_offset",
-    "disable_m73", "preferred_orientation", "emit_machine_limits_to_gcode", "pellet_modded_printer", "support_multi_bed_types", "default_bed_type", "bed_mesh_min","bed_mesh_max","bed_mesh_probe_distance", "adaptive_bed_mesh_margin", "enable_long_retraction_when_cut","long_retractions_when_cut","retraction_distances_when_cut",
+    "disable_m73", "preferred_orientation", "emit_machine_limits_to_gcode", "pellet_modded_printer", "support_multi_bed_types", "use_3mf", "default_bed_type", "bed_mesh_min","bed_mesh_max","bed_mesh_probe_distance", "adaptive_bed_mesh_margin", "enable_long_retraction_when_cut","long_retractions_when_cut","retraction_distances_when_cut",
     "bed_temperature_formula", "nozzle_flush_dataset",
     // IDEX/IQEX (independent X extruder) — printer capability and user-defined modes
     "is_imex", "imex_firmware_managed_zones",
@@ -2382,6 +2382,10 @@ bool PresetCollection::validate_preset(const std::string &preset_name, std::stri
             const std::string canonical_inherit_name = this->canonical_preset_name(inherit_name);
             it    = this->find_preset_internal(canonical_inherit_name);
             found = it != m_presets.end() && it->name == canonical_inherit_name && is_trusted(*it);
+            if (!found) {
+                it    = this->find_preset_renamed(canonical_inherit_name);
+                found = it != m_presets.end() && is_trusted(*it);
+            }
             if (found)
                 BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(": preset_name %1%, inherit_name %2%, found inherit in list")%preset_name %inherit_name;
             else
@@ -2473,7 +2477,9 @@ std::pair<Preset*, bool> PresetCollection::load_external_preset(
 
     if (!inherits.empty() && (different_settings_list.size() > 0)) {
         auto iter = this->find_preset_internal(inherits);
-        if (iter != m_presets.end() && iter->name == inherits) {
+        if (iter == m_presets.end() || iter->name != inherits)
+            iter = this->find_preset_renamed(inherits);
+        if (iter != m_presets.end()) {
             //std::vector<std::string> dirty_options = cfg.diff(iter->config);
             BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << boost::format(": change preset %1% inherit %2% 's value to %3% 's values")%original_name %inherits %path;
             cfg.update_non_diff_values_to_base_config(iter->config, keys, different_settings_list, extruder_id_name, extruder_variant_name, *key_set1, *key_set2);
@@ -2525,7 +2531,9 @@ std::pair<Preset*, bool> PresetCollection::load_external_preset(
         // and override its settings with the loaded ones.
         assert(it == m_presets.end());
         it    = this->find_preset_internal(inherits);
-        found = it != m_presets.end() && it->name == inherits;
+        if (it == m_presets.end() || it->name != inherits)
+            it = this->find_preset_renamed(inherits);
+        found = it != m_presets.end();
         if (found && profile_print_params_same(it->config, cfg)) {
             // The system preset exists and it matches the values stored inside config.
             if (select == LoadAndSelect::Always)