Add real slice validation for all printers (#14771)

# Description

Adds a --slice (-s) mode to the profile validator that slices a
two-colour cube through every shipped printer, expanding all custom
g-code (change_filament_gcode, machine start/end, etc.). This catches
invalid-placeholder / bad-flow / slicing errors that the static JSON
checks and unit tests can't see.

Included:
- Validator: new -s sweep mode; per-profile error attribution in the
log; resolves the synthetic 2nd-filament nozzle-mapping so multi-nozzle
BBL printers (incl. the Direct-Drive+Bowden X2D) validate cleanly.
- CI, two complementary paths:
- check_profiles.yml — runs the sweep on profile-only PRs (nightly
binary).
- build_all.yml — new parallel slice_check_linux job runs it on
engine/src PRs with the PR-built binary (build_all doesn't trigger on
resources/**, so no overlap). Runs off the build's artifact, so it
doesn't lengthen the build leg.
- Profile fixes surfaced by the sweep: Creality, FLSun, Ginger, Qidi,
RatRig, iQ.
- Engine: whitelist BBL firmware T-opcodes (T1001/T65279/T65535) in the
time estimator (log-only, no g-code change); dedupe a
per-filament/per-layer log flood in get_config_index.

# Screenshots/Recordings/Graphs

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## Tests

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src/libslic3r/GCode/GCodeProcessor.cpp

@@ -6551,8 +6551,11 @@ void GCodeProcessor::process_T(const std::string_view command, int nozzle_id)
     if (command.length() > 1) {
         if (eid < 0 || eid > 254) {
             //BBS: T255, T1000 and T1100 is used as special command for BBL machine and does not cost time. return directly
+            // Orca: T1001 (hotend-type detection) and T65535/T65279 (AMS unload virtual-tool selects, paired with
+            // M620/M621 S65535/S65279) are firmware opcodes emitted verbatim by BBL machine start/end g-code, not
+            // real tool changes - whitelist them so the time estimator stops flagging these valid lines.
             if ((m_flavor == gcfMarlinLegacy || m_flavor == gcfMarlinFirmware) && (command == "Tx" || command == "Tc" || command == "T?" ||
-                 eid == 1000 || eid == 1100 || eid == 255))
+                 eid == 1000 || eid == 1100 || eid == 255 || eid == 1001 || eid == 65279 || eid == 65535))
                 return;
 
             // T-1 is a valid gcode line for RepRap Firmwares (used to deselects all tools)

src/libslic3r/Print.cpp

@@ -3677,6 +3677,8 @@ int Print::get_filament_config_indx(int filament_id, int layer_id)
 
 void Print::update_filament_self_index_cache()
 {
+    m_missing_nozzle_group_logged.clear();   // reset the per-slice get_config_index log dedupe
+
     std::vector<int> values;
     if (m_full_print_config.has("filament_self_index")) {
         values = m_full_print_config.option<ConfigOptionInts>("filament_self_index")->values;
@@ -3722,9 +3724,12 @@ int Print::get_config_index(int filament_id, int layer_id, const std::vector<std
         return filament_id;
     auto nozzle_info  = group_result->get_nozzle_for_filament(filament_id, layer_id);
     if (!nozzle_info.has_value()) {
-        BOOST_LOG_TRIVIAL(error) << __FUNCTION__
-                                 << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3%") % __LINE__ % filament_id %
-                                        layer_id;
+        // Orca: this fallback runs per-filament/per-layer in the g-code hot path — log once per filament
+        // (reset each slice) instead of flooding thousands of identical lines that bury the real error.
+        if (m_missing_nozzle_group_logged.insert(filament_id).second)
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__
+                                     << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3% (further occurrences for this filament suppressed)") % __LINE__ % filament_id %
+                                            layer_id;
         return 0;
     }
 
@@ -3751,9 +3756,12 @@ int Print::get_config_index(int filament_id, int layer_id, const std::vector<std
         return (int)get_extruder_id(filament_id);
     auto nozzle_info  = group_result->get_nozzle_for_filament(filament_id, layer_id);
     if (!nozzle_info.has_value()) {
-        BOOST_LOG_TRIVIAL(error) << __FUNCTION__
-                                 << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3%") % __LINE__ % filament_id %
-                                        layer_id;
+        // Orca: this fallback runs per-filament/per-layer in the g-code hot path — log once per filament
+        // (reset each slice) instead of flooding thousands of identical lines that bury the real error.
+        if (m_missing_nozzle_group_logged.insert(filament_id).second)
+            BOOST_LOG_TRIVIAL(error) << __FUNCTION__
+                                     << boost::format(", Line %1%: could not found group_nozzle_info corresponding to filament_id %2%, layer_id %3% (further occurrences for this filament suppressed)") % __LINE__ % filament_id %
+                                            layer_id;
         return 0;
     }
 

src/libslic3r/Print.hpp

@@ -1303,6 +1303,10 @@ private:
     FilamentIndexMap m_filament_index_map;
     // Used to cache printer and process parameter information
     PrintIndexMap m_nozzle_index_map;
+    // Orca: filament ids already reported as missing a nozzle-group entry this slice. get_config_index()
+    // falls back per-filament/per-layer in the g-code hot path, so this dedupes its log to once per
+    // filament instead of flooding thousands of identical error lines. Cleared with the caches each slice.
+    std::set<int> m_missing_nozzle_group_logged;
     // save the config value of "filament_self_index"
     std::vector<int> m_filament_self_index;
 

src/libslic3r/Support/SupportSpotsGenerator.hpp

@@ -22,7 +22,7 @@ struct Params
         : /*max_acceleration(max_acceleration), */raft_layers_count(raft_layers_count), brim_type(brim_type), brim_width(brim_width)
     {
         if (filament_types.size() > 1) {
-            BOOST_LOG_TRIVIAL(warning)
+            BOOST_LOG_TRIVIAL(debug)
                 << "SupportSpotsGenerator does not currently handle different materials properly, only first will be used";
         }
         if (filament_types.empty() || filament_types[0].empty()) {