Only serialize selected published settings. Minor cleanup

src/libslic3r/Format/bbs_3mf.cpp

@@ -5943,6 +5943,7 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
         bool m_save_gcode { false };        // whether to save gcode for normal save
         bool m_skip_model { false };        // skip model when exporting .gcode.3mf
         bool m_skip_auxiliary { false };    // skip normal axuiliary files
+        bool m_minimal_published { false }; // published 3MF: omit embedded preset files
         bool m_use_loaded_id { false };        // whether to use loaded id for identify_id
         bool m_share_mesh { false };        // whether to share mesh between objects
         std::string m_thumbnail_middle = PRINTER_THUMBNAIL_MIDDLE_FILE;
@@ -6042,6 +6043,7 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
         m_skip_auxiliary = store_params.strategy & SaveStrategy::SkipAuxiliary;
         m_share_mesh       = store_params.strategy & SaveStrategy::ShareMesh;
         m_from_backup_save = store_params.strategy & SaveStrategy::Backup;
+        m_minimal_published = store_params.strategy & SaveStrategy::MinimalPublished;
 
         m_use_loaded_id = store_params.strategy & SaveStrategy::UseLoadedId;
 
@@ -6464,8 +6466,8 @@ void PlateData::parse_filament_info(GCodeProcessorResult *result)
                 if (cb_cancel) return false;
             }
 
-            // BBS: add project config
-            if (project_presets.size() > 0) {
+            // BBS: add project config (omitted for minimal published 3MF)
+            if (!m_minimal_published && project_presets.size() > 0) {
                 // BBS: add project embedded preset files
                 _add_project_embedded_presets_to_archive(archive, model, project_presets);
 

src/libslic3r/Format/bbs_3mf.hpp

@@ -145,6 +145,7 @@ enum class SaveStrategy
     SkipAuxiliary       = 1 << 9,
     UseLoadedId         = 1 << 10,
     ShareMesh           = 1 << 11,
+    MinimalPublished    = 1 << 12,
 
     SplitModel = 0x1000 | ProductionExt,
     Encrypted  = SecureContentExt | SplitModel,

src/libslic3r/PublishSettings.cpp

@@ -2,6 +2,7 @@
 
 #include "PresetBundle.hpp"
 #include "Preset.hpp"
+#include "PrintConfig.hpp"
 
 #include <algorithm>
 
@@ -102,4 +103,60 @@ std::vector<std::string> collect_dirty_settings_keys(const PresetBundle& bundle)
     return keys;
 }
 
+DynamicPrintConfig filter_published_config(
+    const DynamicPrintConfig &full_config,
+    const std::vector<std::string> &published_keys,
+    const std::vector<PublishedMaterialEntry> &material_keys)
+{
+    DynamicPrintConfig filtered;
+
+    std::set<std::string> base_keys_to_include;
+
+    // 1. Mandatory material identity & slot count keys for 3MF validation/normalization
+    static const std::vector<std::string> s_material_identity_keys = {
+        "filament_colour",
+        "filament_type",
+        "filament_vendor",
+        "filament_ids",
+        "filament_diameter",
+        "filament_self_index",
+        "filament_extruder_variant"
+    };
+    for (const std::string &key : s_material_identity_keys)
+        base_keys_to_include.insert(key);
+
+    // 2. Published plate / bed geometry keys (wipe tower positioning)
+    static const std::vector<std::string> s_plate_geometry_keys = {
+        "wipe_tower_x",
+        "wipe_tower_y",
+        "wipe_tower_rotation_angle"
+    };
+    for (const std::string &key : s_plate_geometry_keys)
+        base_keys_to_include.insert(key);
+
+    // 3. Process and printer published keys
+    for (const std::string &key : published_keys) {
+        const std::string base_key = key.substr(0, key.find('#'));
+        if (!base_key.empty())
+            base_keys_to_include.insert(base_key);
+    }
+
+    // 4. Material-specific published keys
+    for (const PublishedMaterialEntry &entry : material_keys) {
+        for (const std::string &key : entry.keys) {
+            const std::string base_key = key.substr(0, key.find('#'));
+            if (!base_key.empty())
+                base_keys_to_include.insert(base_key);
+        }
+    }
+
+    // Copy selected options from full_config into filtered config
+    for (const std::string &key : base_keys_to_include) {
+        if (const ConfigOption *opt = full_config.option(key))
+            filtered.set_key_value(key, opt->clone());
+    }
+
+    return filtered;
+}
+
 } // namespace Slic3r

src/libslic3r/PublishSettings.hpp

@@ -53,4 +53,12 @@ struct PublishedMaterialEntry {
     int         slot{-1};
     std::vector<std::string> keys;
 };
+
+// Constructs a minimal DynamicPrintConfig for a published 3MF export containing only the
+// author-selected published keys, material keys, material identity fields, and plate geometry keys.
+class DynamicPrintConfig;
+DynamicPrintConfig filter_published_config(
+    const DynamicPrintConfig &full_config,
+    const std::vector<std::string> &published_keys,
+    const std::vector<PublishedMaterialEntry> &material_keys);
 }