Write the estimated printing time comment after the config block, not before (#15897 )

Co-authored-by: Fernando Marino <f.marino@rheagroup.com> Co-authored-by: yw4z <ywsyildiz@gmail.com>
Remember last print action (#15774 )
2026-09-30 04:11:00 +00:00 · 2026-09-29 19:18:15 -03:00 · 2026-09-29 19:17:45 -03:00 · 2026-09-29 18:13:44 -03:00 · 2026-09-30 03:13:29 +08:00 · 2026-09-30 00:39:30 +08:00
115 changed files with 3805 additions and 1309 deletions
@@ -189,8 +189,7 @@ the presets to a base is in [shared-bases.md](shared-bases.md#variant-arrays-on-
 2. Every key in `filament_options_with_variant` ([the full list](#the-four-key-sets)) that reaches the
   preset, whether written, included or inherited, is resized to its variant count: write it at exactly
   that width, or leave it out. Keys outside the set
-   (`filament_type`, plate temperatures, `fan_max_speed`, `slow_down_min_speed`, `pressure_advance`,
-   …) are never addressed by variant index; the preset contributes their first value however wide a
+   (`filament_type`, plate temperatures, `fan_max_speed`, `slow_down_min_speed`, …) are never addressed by variant index; the preset contributes their first value however wide a
   file writes them.
 3. Cover every variant the material is meant to print on across its `compatible_printers`. Leave out
   a variant deliberately when the material should not be tuned for it (e.g. a TPU High Flow variant
@@ -455,7 +454,7 @@ no set: the variant-length resize leaves it alone, and only the pair rebuild of
 last for contrast; it is not a variant set.

 `check` and `fix-variant` read the four sets from `PrintConfig.cpp` on every run, so they follow the
-engine. The lists below are from the 2026-09-25 checkout; regenerate them from the repository root
+engine. The lists below are from the 2026-09-29 checkout; regenerate them from the repository root
 before relying on them (the recipe strips comments, since an initializer can carry a commented-out entry):

 ```bash
@@ -478,7 +477,7 @@ EOF

 **`print_options_with_variant`**, process, stride 1 (45): `bridge_acceleration`, `bridge_speed`, `default_acceleration`, `default_jerk`, `default_junction_deviation`, `enable_overhang_speed`, `gap_infill_speed`, `infill_jerk`, `initial_layer_acceleration`, `initial_layer_infill_speed`, `initial_layer_jerk`, `initial_layer_speed`, `initial_layer_travel_acceleration`, `initial_layer_travel_jerk`, `initial_layer_travel_speed`, `inner_wall_acceleration`, `inner_wall_jerk`, `inner_wall_speed`, `internal_bridge_speed`, `internal_solid_infill_acceleration`, `internal_solid_infill_speed`, `outer_wall_acceleration`, `outer_wall_jerk`, `outer_wall_speed`, `overhang_1_4_speed`, `overhang_2_4_speed`, `overhang_3_4_speed`, `overhang_4_4_speed`, `print_extruder_id`, `print_extruder_variant`, `slowdown_for_curled_perimeters`, `small_perimeter_speed`, `small_perimeter_threshold`, `sparse_infill_acceleration`, `sparse_infill_speed`, `support_interface_speed`, `support_speed`, `top_solid_infill_flow_ratio`, `top_surface_acceleration`, `top_surface_jerk`, `top_surface_speed`, `travel_acceleration`, `travel_jerk`, `travel_speed`, `travel_speed_z`

-**`filament_options_with_variant`**, filament, stride 1 (48): `activate_air_filtration`, `activate_air_filtration_during_print`, `activate_air_filtration_on_completion`, `complete_print_exhaust_fan_speed`, `during_print_exhaust_fan_speed`, `filament_adaptive_volumetric_speed`, `filament_cooling_before_tower`, `filament_deretraction_speed`, `filament_extruder_variant`, `filament_flow_ratio`, `filament_flush_temp`, `filament_flush_volumetric_speed`, `filament_ironing_flow`, `filament_ironing_inset`, `filament_ironing_spacing`, `filament_ironing_speed`, `filament_long_retractions_when_cut`, `filament_max_volumetric_speed`, `filament_pre_cooling_temperature`, `filament_pre_cooling_temperature_nc`, `filament_preheat_temperature_delta`, `filament_ramming_travel_time`, `filament_ramming_travel_time_nc`, `filament_ramming_volumetric_speed`, `filament_ramming_volumetric_speed_nc`, `filament_retract_after_wipe`, `filament_retract_before_wipe`, `filament_retract_length_nc`, `filament_retract_length_toolchange`, `filament_retract_lift_above`, `filament_retract_lift_below`, `filament_retract_lift_enforce`, `filament_retract_restart_extra`, `filament_retract_restart_extra_toolchange`, `filament_retract_when_changing_layer`, `filament_retraction_distances_when_cut`, `filament_retraction_length`, `filament_retraction_minimum_travel`, `filament_retraction_speed`, `filament_wipe`, `filament_wipe_distance`, `filament_z_hop`, `filament_z_hop_types`, `long_retractions_when_ec`, `nozzle_temperature`, `nozzle_temperature_initial_layer`, `retraction_distances_when_ec`, `volumetric_speed_coefficients`
+**`filament_options_with_variant`**, filament, stride 1 (54): `activate_air_filtration`, `activate_air_filtration_during_print`, `activate_air_filtration_on_completion`, `adaptive_pressure_advance`, `adaptive_pressure_advance_bridges`, `adaptive_pressure_advance_model`, `adaptive_pressure_advance_overhangs`, `complete_print_exhaust_fan_speed`, `during_print_exhaust_fan_speed`, `enable_pressure_advance`, `filament_adaptive_volumetric_speed`, `filament_cooling_before_tower`, `filament_deretraction_speed`, `filament_extruder_variant`, `filament_flow_ratio`, `filament_flush_temp`, `filament_flush_volumetric_speed`, `filament_ironing_flow`, `filament_ironing_inset`, `filament_ironing_spacing`, `filament_ironing_speed`, `filament_long_retractions_when_cut`, `filament_max_volumetric_speed`, `filament_pre_cooling_temperature`, `filament_pre_cooling_temperature_nc`, `filament_preheat_temperature_delta`, `filament_ramming_travel_time`, `filament_ramming_travel_time_nc`, `filament_ramming_volumetric_speed`, `filament_ramming_volumetric_speed_nc`, `filament_retract_after_wipe`, `filament_retract_before_wipe`, `filament_retract_length_nc`, `filament_retract_length_toolchange`, `filament_retract_lift_above`, `filament_retract_lift_below`, `filament_retract_lift_enforce`, `filament_retract_restart_extra`, `filament_retract_restart_extra_toolchange`, `filament_retract_when_changing_layer`, `filament_retraction_distances_when_cut`, `filament_retraction_length`, `filament_retraction_minimum_travel`, `filament_retraction_speed`, `filament_wipe`, `filament_wipe_distance`, `filament_z_hop`, `filament_z_hop_types`, `long_retractions_when_ec`, `nozzle_temperature`, `nozzle_temperature_initial_layer`, `pressure_advance`, `retraction_distances_when_ec`, `volumetric_speed_coefficients`

 **`printer_extruder_options`**, machine, one value per extruder, not a variant set (8):
 `default_nozzle_volume_type`, `extruder_max_nozzle_count`, `extruder_printable_area`,
@@ -244,10 +244,10 @@ preset for a 0.2 nozzle, explicitly revisit flow limits; do not infer a pressure
 required direction of change, from diameter alone.

 On a printer with extruder variants, a filament tunes these per variant too:
-`filament_max_volumetric_speed`, `filament_flow_ratio`, `nozzle_temperature` and the retraction
-overrides carry one value per variant of `filament_extruder_variant` (Standard, High Flow, …). The
+`filament_max_volumetric_speed`, `filament_flow_ratio`, `nozzle_temperature`, pressure advance and the
+retraction overrides carry one value per variant of `filament_extruder_variant` (Standard, High Flow, …). The
 exact key set is [`filament_options_with_variant`](extruder-variants.md#the-four-key-sets);
-`slow_down_min_speed` and `pressure_advance` are not in it. Keep every such array at exactly that width, even where the
+`slow_down_min_speed` and `fan_max_speed` are not in it. Keep every such array at exactly that width, even where the
 setting does not differ per variant, and measure the High Flow variant rather than copying Standard
 ([extruder-variants.md](extruder-variants.md#filament)).

@@ -28,8 +28,8 @@ Per-vendor granularity is what makes the system practical:
 - A vendor whose profile is bumped invalidates only its own cache. The other 60-odd
  vendors keep theirs — even when the bumped vendor is the shared Orca filament
  library everyone else inherits from.
- The setup wizard, which loads vendors one at a time, gets the same speedup as
-  startup without a second code path.
+- The setup wizard loads its vendors through the same routine as startup, so it
+  gets the same speedup without a second code path.
 - A vendor with no cache, or a broken one, costs only that vendor a parse.

 A cache holds *system* presets only. User presets, project settings and modified
@@ -162,15 +162,20 @@ cache nothing can invalidate is worse than no cache.

 Vendors load in a fixed order, because filament inheritance crosses exactly one
 boundary: any vendor's filament may inherit from the shared Orca filament library,
-and nothing else reaches across vendors — an `include` is always vendor-local. The
-library therefore goes first, alone; every other vendor follows in parallel, resolving
-against it; and the results are merged in a stable order:
+and nothing else reaches across vendors — an `include` is always vendor-local. Only
+installing a vendor's presets crosses it; reading the vendor, from its cache or its
+JSONs, needs nothing from the library. So every other vendor is read while the library
+loads, each is installed against it as soon as both are done, and the results are
+merged in a stable order:

 ```mermaid
 flowchart LR
-    lib["1 · OrcaFilamentLibrary<br/>loaded first, synchronously"] --> par["2 · every other vendor in parallel,<br/>each into its own bundle, filaments<br/>resolving against the loaded library"] --> merge["3 · bundles merged into one,<br/>sequentially, in stable vendor order"]
+    lib["1 · OrcaFilamentLibrary loaded;<br/>meanwhile every other vendor read<br/>from its cache or its JSONs"] --> par["2 · every other vendor installed<br/>in parallel, each into its own bundle,<br/>filaments resolving against the library"] --> merge["3 · bundles merged into one,<br/>in one pass per collection,<br/>in stable vendor order"]
 ```

+`PresetBundle::load_vendors` runs these steps for startup and for the setup wizard,
+which hand it the vendors to load and the directory each is installed in.
+
 Whether a vendor comes from its cache or from a parse changes nothing in that
 order — both produce the same bundle, so cached and parsed vendors mix freely in
 one startup.
@@ -211,11 +216,12 @@ shipped cache answered first, so the profile in `<data_dir>/system/` was never p
 and its cache was never written back.

 Serving from a cache is not a memory-image restore. The entries are deserialized and
-then installed one by one — inheritance resolved against the presets installed before
-them and the currently loaded filament library, includes layered in, configs flattened
-onto the collection defaults, validated and registered — by the same function the JSON
-path calls straight after parsing a sub-file. An `include` layers what the included
-base states, between the parent and the preset's own keys: the base's diff against the
+then installed by `install_vendor`, the routine the JSON path hands the vendor's entries
+to once it has parsed the sub-files: inheritance resolved against the presets installed
+before them and the currently loaded filament library, includes layered in, configs
+flattened onto the collection defaults, validated and registered. An `include` layers
+what the included base states, between the parent and the preset's own keys: the base's
+diff against the
 default, taken when the base itself was installed and before the per-variant padding
 `inherits` sees, so only what a template sets reaches the presets including it. The two
 paths share everything below the parse, which is what makes a cache-loaded bundle
@@ -223,6 +229,16 @@ indistinguishable from a JSON-loaded one by construction rather than by test cov
 Installation also rebuilds each preset's file path from the local data directory, so a
 shipped cache never carries the generating machine's paths.

+Installing an entry is split in two. `resolve_vendor_preset` flattens it, reading only
+what is registered under the names it inherits and includes, and `commit_vendor_preset`
+registers it, the only step that writes anything shared. Entries resolve across threads
+in runs and commit in the order the vendor lists them. A run ends before an entry that
+inherits or includes one already in it, since that one's commit registers what the
+entry resolves against, so no entry in a run reads what another in it registers. An
+entry's parse messages are held until it commits. The bundle, the log's parse and
+install messages and the error count therefore come out as parsing and installing one
+entry at a time would leave them, whatever the listing order.
+
 App upgrades work because a cache normally survives one. Only a deliberate
 `CACHE_VERSION` bump makes an installed cache unreadable, and that is handled at
 install time rather than at load: a vendor whose cache this build cannot read counts
@@ -254,17 +270,20 @@ the wizard caches the *derived JSON*, not another form of the inputs:
 open, the wizard computes the current stamps (one version peek per vendor) and, when
 they match, serves the catalog from the file — no bundle built, no preset installed.
 Caching bundle inputs instead was tried and measured: rebuilding the bundle from
-per-vendor caches costs ~2 s of preset installation whatever feeds it, so only
-skipping the rebuild entirely wins.
+per-vendor caches costs over a second of preset installation whatever feeds it, so
+only skipping the rebuild entirely wins.

 Any change to the set — a vendor added, removed or updated, or its cache-only
 `.opc` replaced by a newer one — changes the stamps and retires the whole file;
-the wizard then rebuilds the bundle vendor by vendor (per-vendor caches serving where
-they cover) and writes the catalog back. Selections, region and per-open decorations
-are applied downstream of the cache either way, so a served catalog is
-indistinguishable from a rebuilt one. Nothing ships this file and the updater never
-touches it; it is a locally written artifact, re-derived whenever stale, written
-through a temp file and rename so half a cache is never readable.
+the wizard then rebuilds the bundle with `PresetBundle::load_vendors`, the load
+startup uses (per-vendor caches serving where they cover), and writes the catalog
+back. When a vendor fails to load, the filament library included, that open falls
+back to the wizard's own scan of the vendor JSONs, as when no bundle can be built,
+and writes nothing. Selections, region and per-open decorations are applied
+downstream of the cache either way, so a served catalog is indistinguishable from a
+rebuilt one. Nothing ships this file and the updater never touches it; it is a
+locally written artifact, re-derived whenever stale, written through a temp file and
+rename so half a cache is never readable.

 The cache lives under `<data_dir>/cache/`, not beside the vendors: everything that
 scans `<data_dir>/system/` treats any `.opc` there as a vendor, so a non-vendor
@@ -378,6 +397,13 @@ enumerates only `*.json` will find no vendors at all in a packaged build.
  the `CachedPreset` field list — written and read by `visit_entry` in
  `PresetCacheFormat.cpp`, one list for the save, the load and the name peek alike — or
  the cache's own layout or stamps, requires bumping `CACHE_VERSION` by hand.
+- **Adding a kind of reference between presets**, as `inherits` and `include` are:
+  parse the names into `CachedPreset` (a field change, so `CACHE_VERSION` is bumped),
+  have `install_vendor_entries` end a run before an entry that names one already in it
+  and retain what the names point at, look them up only in `resolve_vendor_preset`, and
+  register what they point at only in `commit_vendor_preset`. The listing-order test in
+  `test_vendor_cache.cpp` fails for a kind the runs do not check once its fixture uses
+  it.
 - **The dictionary indexes with a `uint16`**, so `print_config_def` may hold at most
  65535 options and one cache at most 65535 distinct enum value names.
  `CacheDictionary::save` throws past that, which surfaces when CI generates the
@@ -1,6 +1,6 @@
 {
 	"name": "OrcaFilamentLibrary",
-	"version": "02.04.00.15",
+	"version": "02.04.00.16",
 	"force_update": "0",
 	"description": "Orca Filament Library",
 	"filament_list": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"1"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"0"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"0"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -111,6 +111,7 @@
 		"1"
 	],
 	"enable_pressure_advance": [
+		"0",
 		"0"
 	],
 	"eng_plate_temp": [
@@ -316,6 +317,7 @@
 		"2"
 	],
 	"pressure_advance": [
+		"0.02",
 		"0.02"
 	],
 	"reduce_fan_stop_start_freq": [
@@ -214,9 +214,9 @@ function ShowModelInfo( pModel )
 	
 	SendWXDebugInfo("Model Name:  "+sModelName);
 	
-	$('#ModelName').html(sModelName);
+	$('#ModelName').text(sModelName);
 	$('#ModelName').attr('title',sModelName);
-    $('#ModelAuthorName').html(sModelAuthor);
+    $('#ModelAuthorName').text(sModelAuthor);
 	
 	switch(UploadType)
 	{
@@ -268,7 +268,7 @@ function ShowModelInfo( pModel )
 			break;
 	}
 	
-	$('#Model_Desc').html( html_decode(sModelDesc) );
+	$('#Model_Desc').empty().append( SanitizeDescHtml( html_decode(sModelDesc) ) );
 			
 	let ModelPreviewList=pModel.preview_img;				
    let TotalPreview=ModelPreviewList.length;
@@ -281,16 +281,15 @@ function ShowModelInfo( pModel )
 	
    if(TotalPreview>0)
 	{
-		let htmlPreview='';
+		$('#ModelPreviewList').empty();
 		for(let pn=0;pn<TotalPreview;pn++)			
 		{	
 			//let FTmpPath=decodeURIComponent(ModelPreviewList[pn]);
 			let FTmpPath=ModelPreviewList[pn]['filepath'];
 			
-			htmlPreview+='<div class="swiper-slide"><img class="Model_PrevImg" src="'+FTmpPath+'" /></div>';
+			$('#ModelPreviewList').append( $('<div class="swiper-slide"></div>').append( $('<img class="Model_PrevImg" />').attr('src',FTmpPath) ) );
 		}
 			
-	    $('#ModelPreviewList').html(htmlPreview);
 		$('#Model_Preview_Image').viewer({
 			title: false,
 		    fullsreen: false,
@@ -410,7 +409,8 @@ function ConstructFileHtml( ID, pItem )
 {
 	let fTotal=pItem.length;
 	
-	let strHtml='';
+	let pBoard=$('#'+ID+'  .FileListBoard');
+	pBoard.empty();
 	for( let f=0;f<fTotal;f++ )
 	{
 		let pOne=pItem[f];
@@ -443,39 +443,139 @@ function ConstructFileHtml( ID, pItem )
 			ImgPath='img/default.png';			
 		}		
 			
-		//Add html
+		//Add html. File names come from the 3MF, so build the nodes rather than concatenating markup.
+		let pIconImg=$('<img />').attr('src',ImgPath);
+		let pMenu=$('<div class="FileMenu"><img src="img/s.svg" /></div>');
 		if( strClass!='ImageIcon' )
 		{
-		strHtml+='<div class="FileItem">'+
-				 '	<div class="'+strClass+'"><img src="'+ImgPath+'" /></div>'+
-				 '	<div class="FileText">'+
-			     '		<div class="FileName">'+tName+'</div>'+
-				 '	</div>'+
-				 '	<div class="FileMenu" onClick="OnClickOpenFile(\''+tPath+'\')"><img src="img/s.svg" /></div>'+
-				 '</div>';
+			pMenu.on('click', function(){ OnClickOpenFile(tPath); });
 		}
 		else
 		{
 			ImgID++;
 			let TmpImgID="AF"+ImgID;
 			
-		strHtml+='<div class="FileItem">'+
-				 '	<div class="'+strClass+'"><img id="'+TmpImgID+'" src="'+ImgPath+'" /></div>'+
-				 '	<div class="FileText">'+
-			     '		<div class="FileName">'+tName+'</div>'+
-				 '	</div>'+
-				 '	<div class="FileMenu" onClick="OnClickOpenImage(\''+TmpImgID+'\')"><img src="img/s.svg" /></div>'+
-				 '</div>';			
-		}
+			pIconImg.attr('id',TmpImgID);
+			pMenu.on('click', function(){ OnClickOpenImage(TmpImgID); });
 		}
 		
-	$('#'+ID+'  .FileListBoard').html(strHtml);
+		let pFileItem=$('<div class="FileItem"></div>');
+		pFileItem.append( $('<div></div>').addClass(strClass).append(pIconImg) );
+		pFileItem.append( $('<div class="FileText"></div>').append( $('<div class="FileName"></div>').text(tName).attr('title',tName) ) );
+		pFileItem.append( pMenu );
+		pBoard.append( pFileItem );
+	}
 	
    if( fTotal>0 )
 		$('#'+ID).show();
 }


+// Descriptions are untrusted 3MF metadata that may carry rich-text HTML (e.g. from MakerWorld).
+// Rebuild them from an inert parse, keeping only plain formatting tags and http(s) links and images.
+var DescAllowedTags=['P','BR','B','STRONG','I','EM','U','S','STRIKE','DEL','INS','SUB','SUP','SMALL','MARK',
+	'Q','ABBR','KBD','WBR','H1','H2','H3','H4','H5','H6','UL','OL','LI','DL','DT','DD','BLOCKQUOTE','PRE','CODE',
+	'HR','SPAN','DIV','FIGURE','FIGCAPTION','TABLE','CAPTION','THEAD','TBODY','TFOOT','TR','TH','TD','A','IMG'];
+// Plain attributes kept per tag; the numeric ones must be plain non-negative integers.
+var DescAllowedAttrs={'IMG':['alt','title','width','height'],'TD':['colspan','rowspan'],'TH':['colspan','rowspan'],'OL':['start']};
+var DescNumericAttrs=['width','height','colspan','rowspan','start'];
+// Dropped together with their content; any other unknown tag is unwrapped to its children.
+var DescDroppedTags=['SCRIPT','STYLE','TEMPLATE','NOSCRIPT','TEXTAREA','TITLE','IFRAME','FRAME','OBJECT','EMBED','SVG','MATH'];
+
+function IsHttpUrl( strUrl )
+{
+	// The scheme must be written as is, so nothing the URL parser would strip can precede or split it.
+	if( typeof strUrl!='string' || !/^https?:/i.test(strUrl) )
+		return false;
+	try
+	{
+		let sProtocol=new URL(strUrl).protocol;
+		return sProtocol=='http:' || sProtocol=='https:';
+	}
+	catch(e)
+	{
+		return false;
+	}
+}
+
+// Images load as soon as the page opens, so only https sources are kept: no plain-http requests to the local network.
+function IsHttpsUrl( strUrl )
+{
+	return IsHttpUrl(strUrl) && new URL(strUrl).protocol=='https:';
+}
+
+// Embedded YouTube players become a plain link to the video.
+function GetYouTubeEmbedUrl( pNode )
+{
+	let sSrc=pNode.getAttribute('src');
+	if( !IsHttpUrl(sSrc) )
+		return null;
+	let pUrl=new URL(sSrc);
+	return ( pUrl.origin=='https://www.youtube.com' && pUrl.pathname.indexOf('/embed/')==0 ) ? pUrl.href : null;
+}
+
+function CopyDescNodes( pSrc, pDst )
+{
+	for( let pNode=pSrc.firstChild;pNode!=null;pNode=pNode.nextSibling )
+	{
+		if( pNode.nodeType==Node.TEXT_NODE )
+		{
+			pDst.appendChild( document.createTextNode(pNode.nodeValue) );
+			continue;
+		}
+		if( pNode.nodeType!=Node.ELEMENT_NODE )
+			continue;
+		
+		let sTag=pNode.nodeName.toUpperCase();
+		if( sTag=='IFRAME' )
+		{
+			let sVideoUrl=GetYouTubeEmbedUrl(pNode);
+			if( sVideoUrl!=null )
+			{
+				let pLink=document.createElement('A');
+				pLink.setAttribute('href',sVideoUrl);
+				pLink.textContent=sVideoUrl;
+				pDst.appendChild(pLink);
+			}
+			continue;
+		}
+		if( $.inArray(sTag,DescDroppedTags)>=0 )
+			continue;
+		if( $.inArray(sTag,DescAllowedTags)<0 )
+		{
+			CopyDescNodes(pNode,pDst);
+			continue;
+		}
+		
+		let pElem=document.createElement(sTag);
+		if( sTag=='A' && IsHttpUrl(pNode.getAttribute('href')) )
+			pElem.setAttribute('href',pNode.getAttribute('href'));
+		else if( sTag=='IMG' )
+		{
+			if( !IsHttpsUrl(pNode.getAttribute('src')) )
+				continue;
+			pElem.setAttribute('src',pNode.getAttribute('src'));
+		}
+		$.each( DescAllowedAttrs[sTag]||[], function(i,sAttr){
+			let sValue=pNode.getAttribute(sAttr);
+			if( sValue!=null && ( $.inArray(sAttr,DescNumericAttrs)<0 || /^\d+$/.test(sValue) ) )
+				pElem.setAttribute(sAttr,sValue);
+		});
+		CopyDescNodes(pNode,pElem);
+		pDst.appendChild(pElem);
+	}
+}
+
+function SanitizeDescHtml( strHtml )
+{
+	let pFragment=document.createDocumentFragment();
+	// A DOMParser document is inert: it runs no scripts and loads no resources.
+	let pDoc=new DOMParser().parseFromString(strHtml,'text/html');
+	if( pDoc && pDoc.body )
+		CopyDescNodes(pDoc.body,pFragment);
+	return pFragment;
+}
+
 function ShowProfilelInfo( pProfile )
 {
 	//==========Profile Info==========
@@ -483,10 +583,10 @@ function ShowProfilelInfo( pProfile )
 	let sProfileAuthor=decodeURIComponent(pProfile.author);
 	let sProfileDesc=decodeURIComponent(pProfile.description);
 	
-	$('#ProfileName').html(sProfileName);
-    $('#ProfileAuthor').html(sProfileAuthor);
+	$('#ProfileName').text(sProfileName);
+    $('#ProfileAuthor').text(sProfileAuthor);
 		
-	$('#Profile_Desc').html( html_decode(sProfileDesc) );
+	$('#Profile_Desc').empty().append( SanitizeDescHtml( html_decode(sProfileDesc) ) );
 			
 	let ProfilePreviewList=pProfile.preview_img;				
    let TotalPreview=ProfilePreviewList.length;
@@ -499,15 +599,14 @@ function ShowProfilelInfo( pProfile )
 	
    if(TotalPreview>0)
 	{
-		let htmlPreview='';
+		$('#ProfilePreviewList').empty();
 		for(let pn=0;pn<TotalPreview;pn++)			
 		{	
 			let FTmpPath=ProfilePreviewList[pn]['filepath'];
 			
-			htmlPreview+='<div class="swiper-slide"><img class="Model_PrevImg" src="'+FTmpPath+'" /></div>';
+			$('#ProfilePreviewList').append( $('<div class="swiper-slide"></div>').append( $('<img class="Model_PrevImg" />').attr('src',FTmpPath) ) );
 		}
 			
-		$('#ProfilePreviewList').html(htmlPreview);
 		$('#Profile_Preview_Image').viewer({
 			title: false,
 		    fullsreen: false,
@@ -3476,6 +3476,14 @@ int CLI::run(int argc, char **argv)
        }
        new_variant_counts = old_variant_counts;
        //filament_variant_count = old_variant_counts;
+        //ORCA: lay the per-variant options out one value per variant of the current filaments before each
+        //      loaded filament replaces its own variants, including an option only a loaded filament
+        //      defines, which otherwise starts as a single default value and never reaches the others.
+        for (const DynamicPrintConfig &config : load_filaments_config)
+            for (const std::string &opt_key : filament_options_with_variant)
+                if (opt_key != "filament_extruder_variant" && config.has(opt_key))
+                    m_print_config.option(opt_key, true);
+        normalize_filament_values_to_variants(m_print_config);
        for (int index = 0; index < load_filaments_config.size(); index++) {
            DynamicPrintConfig&  config = load_filaments_config[index];
            int filament_index = load_filaments_index[index];
@@ -3647,6 +3655,25 @@ int CLI::run(int argc, char **argv)
                }
            }

+            //ORCA: a per-variant option the loaded filament does not define keeps the values of the
+            //      variants the filament already had, and a variant new to it takes its first one's.
+            const int old_start = old_start_indice[filament_index - 1];
+            std::vector<int> kept_variant_indice = new_variant_indice;
+            for (int &i : kept_variant_indice)
+                if (i < 0)
+                    i = old_start;
+            for (const std::string &opt_key : filament_options_with_variant) {
+                if (config.has(opt_key))
+                    continue;
+                auto *opt_vec_dst = dynamic_cast<ConfigOptionVectorBase *>(m_print_config.option(opt_key));
+                if (opt_vec_dst == nullptr || opt_vec_dst->size() < size_t(old_start + old_variant_count))
+                    continue;
+                // set_with_restore_2() pads its source in place
+                std::unique_ptr<ConfigOption> old_values(opt_vec_dst->clone());
+                opt_vec_dst->set_with_restore_2(static_cast<ConfigOptionVectorBase *>(old_values.get()), kept_variant_indice, old_start,
+                                                old_variant_count, true);
+            }
+
            //update the old index
            if (old_variant_count != new_variant_count)
            {
@@ -4081,6 +4108,9 @@ int CLI::run(int argc, char **argv)
    if (printer_technology == ptFFF) {
        fff_print_config.apply(m_print_config, true);
        m_print_config.apply(fff_print_config, true);
+        //ORCA: an option no preset or project defines has just come in as its single default value, and a
+        //      command line override may hold one value per filament.
+        normalize_filament_values_to_variants(m_print_config);
    } else {
        boost::nowide::cerr << "invalid printer_technology " << std::endl;
        record_exit_reson(outfile_dir, CLI_INVALID_PRINTER_TECH, 0, cli_errors[CLI_INVALID_PRINTER_TECH], sliced_info);
@@ -511,6 +511,10 @@ void AppConfig::set_defaults()
        set_bool("enable_high_low_temp_mixed_printing", false);
    }

+    if (get("remember_print_action").empty()) {
+        set_bool("remember_print_action", false);
+    }
+
    if (get("ignore_ext_filament_in_filament_map").empty()){
        set_bool("ignore_ext_filament_in_filament_map", false);
    }
@@ -355,6 +355,7 @@ set(lisbslic3r_sources
    Optimize/Optimizer.hpp
    Orient.cpp
    Orient.hpp
+    ParallelResolve.hpp
    ParameterUtils.cpp
    ParameterUtils.hpp
    pchheader.cpp
@@ -849,6 +849,19 @@ ConfigSubstitutions ConfigBase::load_from_json(const std::string &file, ForwardC
    return std::move(substitutions_ctxt.substitutions);
 }

+// Case-insensitive compare of a JSON key against a fixed ASCII one, without
+// boost::iequals, whose std::locale() takes a lock the whole process shares in the
+// MSVC runtime.
+static bool ascii_iequals(const std::string &key, const char *literal)
+{
+    auto lower = [](char c) { return (c >= 'A' && c <= 'Z') ? char(c - 'A' + 'a') : c; };
+    size_t i = 0;
+    for (; i < key.size() && literal[i] != '\0'; ++ i)
+        if (lower(key[i]) != lower(literal[i]))
+            return false;
+    return i == key.size() && literal[i] == '\0';
+}
+
 int ConfigBase::load_from_json(const std::string &file, ConfigSubstitutionContext& substitution_context, bool load_inherits_to_config, std::map<std::string, std::string>& key_values, std::string& reason)
 {
    json j;
@@ -916,44 +929,44 @@ int ConfigBase::load_from_json(const std::string &file, ConfigSubstitutionContex
        }
        //parse the json elements
        for (auto it = j.begin(); it != j.end(); it++) {
-            if (boost::iequals(it.key(),BBL_JSON_KEY_VERSION)) {
+            if (ascii_iequals(it.key(), BBL_JSON_KEY_VERSION)) {
                key_values.emplace(BBL_JSON_KEY_VERSION, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_IS_CUSTOM)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_IS_CUSTOM)) {
                //skip it
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_NAME)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_NAME)) {
                key_values.emplace(BBL_JSON_KEY_NAME, it.value());
                if (it.value() == "project_settings")
                    is_project_settings = true;
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_URL)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_URL)) {
                key_values.emplace(BBL_JSON_KEY_URL, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_TYPE)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_TYPE)) {
                key_values.emplace(BBL_JSON_KEY_TYPE, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_SETTING_ID)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_SETTING_ID)) {
                key_values.emplace(BBL_JSON_KEY_SETTING_ID, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_FILAMENT_ID)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_FILAMENT_ID)) {
                key_values.emplace(BBL_JSON_KEY_FILAMENT_ID, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_FROM)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_FROM)) {
                key_values.emplace(BBL_JSON_KEY_FROM, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_DESCRIPTION)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_DESCRIPTION)) {
                key_values.emplace(BBL_JSON_KEY_DESCRIPTION, it.value());
            }
-            else if (boost::iequals(it.key(), BBL_JSON_KEY_INSTANTIATION)) {
+            else if (ascii_iequals(it.key(), BBL_JSON_KEY_INSTANTIATION)) {
                key_values.emplace(BBL_JSON_KEY_INSTANTIATION, it.value());
            }
-            else if (!load_inherits_to_config && boost::iequals(it.key(), BBL_JSON_KEY_INHERITS)) {
+            else if (!load_inherits_to_config && ascii_iequals(it.key(), BBL_JSON_KEY_INHERITS)) {
                key_values.emplace(BBL_JSON_KEY_INHERITS, it.value());
            }
-            else if (!load_inherits_to_config && boost::iequals(it.key(), BBL_JSON_KEY_INCLUDES)) {
+            else if (!load_inherits_to_config && ascii_iequals(it.key(), BBL_JSON_KEY_INCLUDES)) {
                key_values.emplace(BBL_JSON_KEY_INCLUDES, it.value().dump());
-            } else if (boost::iequals(it.key(), ORCA_JSON_KEY_RENAMED_FROM)) {
+            } else if (ascii_iequals(it.key(), ORCA_JSON_KEY_RENAMED_FROM)) {
                key_values.emplace(ORCA_JSON_KEY_RENAMED_FROM, it.value());
            } else {
                t_config_option_key opt_key = it.key();
@@ -141,7 +141,7 @@ bool load_obj(const char *path, TriangleMesh *meshptr, ObjInfo& obj_info, std::s
                its.indices.emplace_back(indices[0], indices[1], indices[2]);
                int  face_index =its.indices.size() - 1;
                RGBA face_color;
-                auto set_face_color = [&uvs, &data, &mtl_data, &obj_info, &face_color](int face_index, const std::string mtl_name) {
+                auto set_face_color = [&uvs, &data, &mtl_data, &obj_info, &face_color](int face_index, const std::string mtl_name, const std::array<int, 3> &corners) {
                    if (mtl_data.new_mtl_unmap.find(mtl_name) != mtl_data.new_mtl_unmap.end()) {
                        bool is_merge_ka_kd = true;
                        for (size_t n = 0; n < 3; n++) {
@@ -174,7 +174,7 @@ bool load_obj(const char *path, TriangleMesh *meshptr, ObjInfo& obj_info, std::s
                                    return Vec2f::Zero();
                                return Vec2f(data.textureCoordinates[idx * OBJ_TEXCOORD_LENGTH], data.textureCoordinates[idx * OBJ_TEXCOORD_LENGTH + 1]);
                            };
-                            std::array<Vec2f, 3> uv_array{uv_at(uvs[0]), uv_at(uvs[1]), uv_at(uvs[2])};
+                            std::array<Vec2f, 3> uv_array{uv_at(uvs[corners[0]]), uv_at(uvs[corners[1]]), uv_at(uvs[corners[2]])};
                            obj_info.uvs.emplace_back(uv_array);
                        }
                        obj_info.face_colors.emplace_back(face_color);
@@ -185,27 +185,27 @@ bool load_obj(const char *path, TriangleMesh *meshptr, ObjInfo& obj_info, std::s
                        }
                    }
                };
-                auto set_face_color_by_mtl = [&data, &set_face_color](int face_index) {
+                auto set_face_color_by_mtl = [&data, &set_face_color](int face_index, const std::array<int, 3> &corners) {
                    if (data.usemtls.size() == 1) {
-                        set_face_color(face_index, data.usemtls[0].name);
+                        set_face_color(face_index, data.usemtls[0].name, corners);
                    } else {
                        for (size_t k = 0; k < data.usemtls.size(); k++) {
                            auto mtl = data.usemtls[k];
                            if (face_index >= mtl.face_start && face_index <= mtl.face_end) {
-                                set_face_color(face_index, data.usemtls[k].name);
+                                set_face_color(face_index, data.usemtls[k].name, corners);
                                break;
                            }
                        }
                    }
                };
                if (exist_mtl) {
-                    set_face_color_by_mtl(face_index);
+                    set_face_color_by_mtl(face_index, {0, 1, 2});
                }
                if (cnt == 4) {
                    its.indices.emplace_back(indices[0], indices[2], indices[3]);
                    int face_index = its.indices.size() - 1;
                    if (exist_mtl) {
-                        set_face_color_by_mtl(face_index);
+                        set_face_color_by_mtl(face_index, {0, 2, 3});
                    }
                }
            }
@@ -217,8 +217,12 @@ bool load_obj(const char *path, TriangleMesh *meshptr, ObjInfo& obj_info, std::s
        message = _L("This OBJ file couldn't be read because it's empty.");
        return false;
    }
-    if (meshptr->volume() < 0)
+    if (meshptr->volume() < 0) {
        meshptr->flip_triangles();
+        // Flipping swaps corners 1 and 2 of every face, so the UVs have to follow.
+        for (std::array<Vec2f, 3> &uv : obj_info.uvs)
+            std::swap(uv[1], uv[2]);
+    }
    // Hand the parsed material table back so callers can build a TexturedMesh from it.
    if (out_mtl)
        *out_mtl = mtl_data;
@@ -1497,12 +1497,7 @@ static std::vector<Vec2d> get_path_of_change_filament(const Print& print)
        check_add_eol(toolchange_gcode_str);

        // SoftFever: set new PA for new filament
-        if (gcodegen.config().enable_pressure_advance.get_at(new_filament_id)) {
-            gcode += gcodegen.writer().set_pressure_advance(gcodegen.config().pressure_advance.get_at(new_filament_id));
-            // Orca: Adaptive PA
-            // Reset Adaptive PA processor last PA value
-            gcodegen.m_pa_processor->resetPreviousPA(gcodegen.config().pressure_advance.get_at(new_filament_id));
-        }
+        gcode += gcodegen.set_filament_pressure_advance(new_filament_id);

        // A phony move to the end position at the wipe tower.
        gcodegen.writer().travel_to_xy((end_pos + plate_origin_2d).cast<double>());
@@ -1826,12 +1821,8 @@ static std::vector<Vec2d> get_path_of_change_filament(const Print& print)
        check_add_eol(toolchange_gcode_str);

        // SoftFever: set new PA for new filament
-        if (new_extruder_id != -1 && gcodegen.config().enable_pressure_advance.get_at(new_extruder_id)) {
-            gcode += gcodegen.writer().set_pressure_advance(gcodegen.config().pressure_advance.get_at(new_extruder_id));
-            // Orca: Adaptive PA
-            // Reset Adaptive PA processor last PA value
-            gcodegen.m_pa_processor->resetPreviousPA(gcodegen.config().pressure_advance.get_at(new_extruder_id));
-        }
+        if (new_extruder_id != -1)
+            gcode += gcodegen.set_filament_pressure_advance(new_extruder_id);

        // A phony move to the end position at the wipe tower.
        gcodegen.writer().travel_to_xy((end_pos + plate_origin_2d).cast<double>());
@@ -3232,7 +3223,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
    m_cooling_buffer->set_current_extruder(initial_extruder_id, extruder_id);

    // Orca: Initialise AdaptivePA processor filter
-    m_pa_processor = std::make_unique<AdaptivePAProcessor>(*this, tool_ordering.all_extruders());
+    m_pa_processor = std::make_unique<AdaptivePAProcessor>(*this);

    // Update output variables after the extruders were initialized.
    m_placeholder_parser_integration.init(m_writer);
@@ -3797,12 +3788,7 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
            }
        }
        // Orca: add missing PA settings for initial filament
-        if (m_config.enable_pressure_advance.get_at(initial_non_support_extruder_id)) {
-            file.write(m_writer.set_pressure_advance(m_config.pressure_advance.get_at(initial_non_support_extruder_id)));
-            // Orca: Adaptive PA
-            // Reset Adaptive PA processor last PA value
-            m_pa_processor->resetPreviousPA(m_config.pressure_advance.get_at(initial_non_support_extruder_id));
-        }
+        file.write(set_filament_pressure_advance(initial_non_support_extruder_id));
    }

    //flush FanMover buffer to avoid modifying the start gcode if it's manual.
@@ -4188,6 +4174,28 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato

    print.throw_if_canceled();

+    // Some firmwares only scan the last N lines for the time estimate, so the stats are written
+    // after the config block.
+    if (!is_bbl_printers && !skip_config_block) {
+        file.write("; CONFIG_BLOCK_START\n");
+        std::string full_config;
+        append_full_config(print, full_config);
+        if (!full_config.empty())
+          file.write(full_config);
+
+        // SoftFever: write compatiple info
+        int first_layer_bed_temperature = get_bed_temperature(0, true, print.config().curr_bed_type);
+        file.write_format("; first_layer_bed_temperature = %d\n", first_layer_bed_temperature);
+        file.write_format("; bed_shape = %s\n", print.full_print_config().opt_serialize("printable_area").c_str());
+        file.write_format("; first_layer_temperature = %d\n", print.config().nozzle_temperature_initial_layer.get_at(0));
+        file.write_format("; first_layer_height = %.3f\n", print.config().initial_layer_print_height.value);
+
+          //SF TODO
+//        file.write_format("; variable_layer_height = %d\n", print.ad.adaptive_layer_height ? 1 : 0);
+
+        file.write("; CONFIG_BLOCK_END\n\n");
+    }
+
    // Get filament stats.
    file.write(DoExport::update_print_stats_and_format_filament_stats(
    	// Const inputs
@@ -4214,26 +4222,6 @@ void GCode::_do_export(Print& print, GCodeOutputStream &file, ThumbnailsGenerato
                GCodeProcessor::ETags::Estimated_Printing_Time_Placeholder)
            .c_str());
      file.write("\n");
-      if (!skip_config_block) {
-          file.write("; CONFIG_BLOCK_START\n");
-          std::string full_config;
-          append_full_config(print, full_config);
-          if (!full_config.empty())
-            file.write(full_config);
-
-          // SoftFever: write compatiple info
-          int first_layer_bed_temperature = get_bed_temperature(0, true, print.config().curr_bed_type);
-          file.write_format("; first_layer_bed_temperature = %d\n", first_layer_bed_temperature);
-          file.write_format("; bed_shape = %s\n", print.full_print_config().opt_serialize("printable_area").c_str());
-          file.write_format("; first_layer_temperature = %d\n", print.config().nozzle_temperature_initial_layer.get_at(0));
-          file.write_format("; first_layer_height = %.3f\n", print.config().initial_layer_print_height.value);
-
-            //SF TODO
-//          file.write_format("; variable_layer_height = %d\n", print.ad.adaptive_layer_height ? 1 : 0);
-
-          file.write("; CONFIG_BLOCK_END\n\n");
-      } // !skip_config_block
-
    }
    file.write("\n");

@@ -8390,12 +8378,16 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
    
    // Orca: Dynamic PA
    // If adaptive PA is enabled, by default evaluate PA on all extrusion moves
+    // The PA settings and the PA_CHANGE tags use the filament config index of the filament's extruder variant
+    const unsigned int pa_config_index = (unsigned int) get_filament_config_index(m_writer.filament()->id());
+    const bool adaptive_pa = m_config.adaptive_pressure_advance.get_at(pa_config_index) && m_config.enable_pressure_advance.get_at(pa_config_index);
+    const bool adaptive_pa_overhangs = adaptive_pa && m_config.adaptive_pressure_advance_overhangs.get_at(pa_config_index);
    bool is_pa_calib = m_curr_print->calib_mode() == CalibMode::Calib_PA_Line ||
                       m_curr_print->calib_mode() == CalibMode::Calib_PA_Pattern ||
                       m_curr_print->calib_mode() == CalibMode::Calib_PA_Tower;
    bool evaluate_adaptive_pa = false;
    bool role_change = (m_last_extrusion_role != path.role());
-    if (!is_pa_calib && FILAMENT_CONFIG(adaptive_pressure_advance) && FILAMENT_CONFIG(enable_pressure_advance)) {
+    if (!is_pa_calib && adaptive_pa) {
        evaluate_adaptive_pa = true;
        // If we have already emmited a PA change because the m_multi_flow_segment_path_pa_set is set
        // skip re-issuing the PA change tag.
@@ -8478,7 +8470,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
    // Post processor flag generation code segment when option to emit only at role changes is enabled
    // Variables published to the post processor:
    // 1) Tag to trigger a PA evaluation (because a role change was identified and the user has requested dynamic PA adjustments)
-    // 2) Current extruder ID (to identify the PA model for the currently used extruder)
+    // 2) Current filament config index (to identify the PA model for the currently used filament and its extruder variant)
    // 3) mm3_per_mm value (to then multiply by the final model print speed after slowdown for cooling is applied)
    // 4) the current acceleration (to pass to the model for evaluation)
    // 5) whether this is an external perimeter (for future use)
@@ -8489,7 +8481,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
        if (m_multi_flow_segment_path_average_mm3_per_mm > 0) {
            sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                    GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                    m_writer.filament()->id(),
+                    pa_config_index,
                    m_multi_flow_segment_path_average_mm3_per_mm,
                    acceleration_i,
                    ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -8502,7 +8494,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                                    // to issue a zero flow PA change command for this
            sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                    GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                    m_writer.filament()->id(),
+                    pa_config_index,
                    _mm3_per_mm,
                    acceleration_i,
                    ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -8610,11 +8602,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
            // or a flow change, so emit the flag to evaluate PA for the upcomming extrusion
            // Emit tag before new speed is set so the post processor reads the next speed immediately and uses it.
            // Dont emit tag if it has just already been emitted from a role change above
-            if(_mm3_per_mm >0 &&
-               FILAMENT_CONFIG(adaptive_pressure_advance) &&
-               FILAMENT_CONFIG(enable_pressure_advance) &&
-               FILAMENT_CONFIG(adaptive_pressure_advance_overhangs) &&
-               !evaluate_adaptive_pa){
+            if(_mm3_per_mm >0 && adaptive_pa_overhangs && !evaluate_adaptive_pa){
                if(writer().get_current_speed() > F){ // Ramping down speed - use overhang logic where the minimum speed is used between current and upcoming extrusion
                    if(m_config.gcode_comments){
                        sprintf(buf, "; Ramp down-non-variable\n");
@@ -8622,7 +8610,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                    }
                    sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                            GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                            m_writer.filament()->id(),
+                            pa_config_index,
                            _mm3_per_mm,
                            acceleration_i,
                            ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -8637,7 +8625,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                    }
                    sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                            GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                            m_writer.filament()->id(),
+                            pa_config_index,
                            _mm3_per_mm,
                            acceleration_i,
                            ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -8843,10 +8831,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                // ORCA: Adaptive PA code segment when adjusting PA within the same feature
                // There is a speed change or flow change so emit the flag to evaluate PA for the upcomming extrusion
                // Emit tag before new speed is set so the post processor reads the next speed immediately and uses it.
-                if(_mm3_per_mm >0   &&
-                   EXTRUDER_CONFIG(adaptive_pressure_advance) &&
-                   EXTRUDER_CONFIG(enable_pressure_advance) &&
-                   EXTRUDER_CONFIG(adaptive_pressure_advance_overhangs) ){
+                if(_mm3_per_mm >0 && adaptive_pa_overhangs){
                    if(last_set_speed > new_speed){ // Ramping down speed - use overhang logic where the minimum speed is used between current and upcoming extrusion
                        if(m_config.gcode_comments) {
                            sprintf(buf, "; Ramp up-variable\n");
@@ -8854,7 +8839,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                        }
                        sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                                GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                                m_writer.filament()->id(),
+                                pa_config_index,
                                _mm3_per_mm,
                                acceleration_i,
                                ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -8869,7 +8854,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
                        }
                        sprintf(buf, ";%sT%u MM3MM:%g ACCEL:%u BR:%d RC:%d OV:%d\n",
                                GCodeProcessor::reserved_tag(GCodeProcessor::ETags::PA_Change).c_str(),
-                                m_writer.filament()->id(),
+                                pa_config_index,
                                _mm3_per_mm,
                                acceleration_i,
                                ((path.role() == erBridgeInfill) ||(path.role() == erOverhangPerimeter)),
@@ -9422,33 +9407,29 @@ void GCode::update_placeholder_parser_with_variant_params()
    if (num_filaments == 0)
        return;

-    // Helpers: remap config arrays from variant index space to filament_id index space.
+    // Helper: remap config arrays from variant index space to filament_id index space.
    // After remapping, gcode templates can use param[filament_id] directly.
-    auto remap_floats_by_filament = [&](const auto &src) {
-        std::vector<double> dst(num_filaments);
-        for (size_t i = 0; i < num_filaments; ++i)
-            dst[i] = src.get_at(get_filament_config_index(i));
-        return dst;
-    };
-    auto remap_ints_by_filament = [&](const auto &src) {
-        std::vector<int> dst(num_filaments);
+    auto remap_by_filament = [&](const auto &src) {
+        std::decay_t<decltype(src.values)> dst(num_filaments);
        for (size_t i = 0; i < num_filaments; ++i)
            dst[i] = src.get_at(get_filament_config_index(i));
        return dst;
    };

    // --- filament_options_with_variant: gcode indexes by filament_id ---
-    this->placeholder_parser().set("filament_max_volumetric_speed",       new ConfigOptionFloats(remap_floats_by_filament(m_config.filament_max_volumetric_speed)));
-    this->placeholder_parser().set("filament_pre_cooling_temperature",    new ConfigOptionInts(remap_ints_by_filament(m_config.filament_pre_cooling_temperature)));
-    this->placeholder_parser().set("filament_pre_cooling_temperature_nc", new ConfigOptionInts(remap_ints_by_filament(m_config.filament_pre_cooling_temperature_nc)));
-    this->placeholder_parser().set("filament_cooling_before_tower",       new ConfigOptionFloats(remap_floats_by_filament(m_config.filament_cooling_before_tower)));
-    this->placeholder_parser().set("nozzle_temperature_initial_layer",    new ConfigOptionInts(remap_ints_by_filament(m_config.nozzle_temperature_initial_layer)));
-    this->placeholder_parser().set("nozzle_temperature",                  new ConfigOptionInts(remap_ints_by_filament(m_config.nozzle_temperature)));
+    this->placeholder_parser().set("filament_max_volumetric_speed",       new ConfigOptionFloats(remap_by_filament(m_config.filament_max_volumetric_speed)));
+    this->placeholder_parser().set("filament_pre_cooling_temperature",    new ConfigOptionInts(remap_by_filament(m_config.filament_pre_cooling_temperature)));
+    this->placeholder_parser().set("filament_pre_cooling_temperature_nc", new ConfigOptionInts(remap_by_filament(m_config.filament_pre_cooling_temperature_nc)));
+    this->placeholder_parser().set("filament_cooling_before_tower",       new ConfigOptionFloats(remap_by_filament(m_config.filament_cooling_before_tower)));
+    this->placeholder_parser().set("nozzle_temperature_initial_layer",    new ConfigOptionInts(remap_by_filament(m_config.nozzle_temperature_initial_layer)));
+    this->placeholder_parser().set("nozzle_temperature",                  new ConfigOptionInts(remap_by_filament(m_config.nozzle_temperature)));
    // first_layer_temperature is a legacy alias of nozzle_temperature_initial_layer
-    this->placeholder_parser().set("first_layer_temperature",             new ConfigOptionInts(remap_ints_by_filament(m_config.nozzle_temperature_initial_layer)));
+    this->placeholder_parser().set("first_layer_temperature",             new ConfigOptionInts(remap_by_filament(m_config.nozzle_temperature_initial_layer)));
+    this->placeholder_parser().set("pressure_advance",                    new ConfigOptionFloats(remap_by_filament(m_config.pressure_advance)));
+    this->placeholder_parser().set("enable_pressure_advance",             new ConfigOptionBools(remap_by_filament(m_config.enable_pressure_advance)));

    // --- printer_options_with_variant_1: in m_config these are already merged as filament-indexed ---
-    this->placeholder_parser().set("retraction_distances_when_cut",       new ConfigOptionFloats(remap_floats_by_filament(m_config.retraction_distances_when_cut)));
+    this->placeholder_parser().set("retraction_distances_when_cut",       new ConfigOptionFloats(remap_by_filament(m_config.retraction_distances_when_cut)));
    // hotend_cooling_rate / hotend_heating_rate: gcode uses [filament_map[x]-1] (extruder_id), no remap needed

    // --- filament_map: per-layer dynamic, sync from m_config to placeholder_parser ---
@@ -9458,9 +9439,9 @@ void GCode::update_placeholder_parser_with_variant_params()
    {
        // Fast purge mode uses filament_flush_temp_fast; Default is inert.
        bool use_fast_flush = m_config.prime_volume_mode == PrimeVolumeMode::pvmFast;
-        auto flush_v_speed  = remap_floats_by_filament(m_config.filament_flush_volumetric_speed);
-        auto filament_max_v = remap_floats_by_filament(m_config.filament_max_volumetric_speed);
-        auto flush_temps    = remap_ints_by_filament(use_fast_flush ? m_config.filament_flush_temp_fast
+        auto flush_v_speed  = remap_by_filament(m_config.filament_flush_volumetric_speed);
+        auto filament_max_v = remap_by_filament(m_config.filament_max_volumetric_speed);
+        auto flush_temps    = remap_by_filament(use_fast_flush ? m_config.filament_flush_temp_fast
                                                               : m_config.filament_flush_temp);
        for (size_t i = 0; i < num_filaments; ++i) {
            if (flush_v_speed[i] == 0)
@@ -9513,12 +9494,7 @@ std::string GCode::set_extruder(unsigned int new_filament_id, double print_z, bo
            gcode += this->placeholder_parser_process("filament_start_gcode", filament_start_gcode, new_filament_id, &config);
            check_add_eol(gcode);
        }
-        if (m_config.enable_pressure_advance.get_at(new_filament_id)) {
-            gcode += m_writer.set_pressure_advance(m_config.pressure_advance.get_at(new_filament_id));
-            // Orca: Adaptive PA
-            // Reset Adaptive PA processor last PA value
-            m_pa_processor->resetPreviousPA(m_config.pressure_advance.get_at(new_filament_id));
-        }
+        gcode += set_filament_pressure_advance(new_filament_id);

        gcode += m_writer.toolchange(new_filament_id, new_extruder_id);
        if (Extruder *fil = m_writer.filament())
@@ -9909,18 +9885,24 @@ std::string GCode::set_extruder(unsigned int new_filament_id, double print_z, bo
    if (m_ooze_prevention.enable && !defer_temp_wait)
        gcode += m_ooze_prevention.post_toolchange(*this);

-    if (m_config.enable_pressure_advance.get_at(new_filament_id)) {
-        gcode += m_writer.set_pressure_advance(m_config.pressure_advance.get_at(new_filament_id));
-        // Orca: Adaptive PA
-        // Reset Adaptive PA processor last PA value
-        m_pa_processor->resetPreviousPA(m_config.pressure_advance.get_at(new_filament_id));
-    }
+    gcode += set_filament_pressure_advance(new_filament_id);
    //Orca: tool changer or IDEX's firmware may change Z position, so we set it to unknown/undefined
    m_last_pos_defined = false;

    return gcode;
 }

+std::string GCode::set_filament_pressure_advance(unsigned int filament_id)
+{
+    const size_t fi = get_filament_config_index(filament_id);
+    if (!m_config.enable_pressure_advance.get_at(fi))
+        return {};
+    // Orca: Adaptive PA
+    // Reset Adaptive PA processor last PA value
+    m_pa_processor->resetPreviousPA(m_config.pressure_advance.get_at(fi));
+    return m_writer.set_pressure_advance(m_config.pressure_advance.get_at(fi));
+}
+
 inline std::string polygon_to_string(const Polygon &polygon, Print *print, bool is_print_space = false) {
    std::ostringstream gcode;
    gcode << "[";
@@ -281,6 +281,8 @@ public:
    // extra_retract forwards a PETG pre-extrusion over-extrusion; default 0 -> identical to the plain deretract.
    std::string     unretract(float extra_retract = 0.f) { return m_writer.unlift() + m_writer.unretract(extra_retract); }
    std::string     set_extruder(unsigned int extruder_id, double print_z, bool by_object=false, int toolchange_temp_override = -1, bool defer_temp_wait = false);
+    // Sets the pressure advance of the filament's extruder variant, if enabled for it.
+    std::string     set_filament_pressure_advance(unsigned int filament_id);
    bool is_BBL_Printer();
    WipeTowerType wipe_tower_type();

@@ -21,38 +21,30 @@ namespace Slic3r {
 *
 * @param gcodegen A reference to the GCode object that generates the G-code.
 */
-AdaptivePAProcessor::AdaptivePAProcessor(GCode &gcodegen, const std::vector<unsigned int> &tools_used)
+AdaptivePAProcessor::AdaptivePAProcessor(GCode &gcodegen)
    : m_gcodegen(gcodegen),
      m_config(gcodegen.config()),
      m_last_predicted_pa(0.0),
      m_max_next_feedrate(0.0),
      m_next_feedrate(0.0),
      m_current_feedrate(0.0),
-      m_last_extruder_id(-1),
+      m_last_config_index(-1),
      m_pa_change_pattern(R"(; PA_CHANGE:T(\d+) MM3MM:([0-9]*\.[0-9]+) ACCEL:(\d+) BR:(\d+) RC:(\d+) OV:(\d+))"),
      m_g1_f_pattern(R"(G1 F([0-9]+))")
 {
-    // Constructor body can be used for further initialization if necessary
-    for (unsigned int tool : tools_used) {
-        // Only enable model for the tool if both PA and adaptive PA options are enabled
-        if(m_config.adaptive_pressure_advance.get_at(tool) && m_config.enable_pressure_advance.get_at(tool)){
-            auto interpolator = std::make_unique<AdaptivePAInterpolator>();
-            // Get calibration values from extruder
-            std::string pa_calibration_values = m_config.adaptive_pressure_advance_model.get_at(tool);
-            // Setup the model and store it in the tool-interpolation model map
-            interpolator->parseAndSetData(pa_calibration_values);
-            m_AdaptivePAInterpolators[tool] = std::move(interpolator);
-        }
-    }
 }

-// Method to get the interpolator for a specific tool ID
-AdaptivePAInterpolator* AdaptivePAProcessor::getInterpolator(unsigned int tool_id) {
-    auto it = m_AdaptivePAInterpolators.find(tool_id);
-    if (it != m_AdaptivePAInterpolators.end()) {
-        return it->second.get();
+// Method to get the interpolator for a specific filament config index.
+// The model is built the first time an index is requested, as the indices in use depend on
+// the extruder variant each filament prints with.
+AdaptivePAInterpolator* AdaptivePAProcessor::getInterpolator(unsigned int config_index) {
+    auto [it, inserted] = m_AdaptivePAInterpolators.try_emplace(config_index);
+    // Only enable model for the index if both PA and adaptive PA options are enabled
+    if (inserted && m_config.adaptive_pressure_advance.get_at(config_index) && m_config.enable_pressure_advance.get_at(config_index)) {
+        it->second = std::make_unique<AdaptivePAInterpolator>();
+        it->second->parseAndSetData(m_config.adaptive_pressure_advance_model.get_at(config_index));
    }
-    return nullptr;  // Handle the case where the tool_id was not found
+    return it->second.get();
 }

 /**
@@ -108,16 +100,17 @@ std::string AdaptivePAProcessor::process_layer(std::string &&gcode) {
        // the PA for that material is set. As no tag below will be found for this extruder, the original PA is retained.
        if (line.find("; PA_CHANGE") == 0) { // prune lines quickly before running regex check as regex is more expensive to run
            if (std::regex_search(line, m_match, m_pa_change_pattern)) {
-                int extruder_id = std::stoi(m_match[1].str());
+                // The tag carries the filament config index, which selects the PA settings of the filament's extruder variant
+                int config_index = std::stoi(m_match[1].str());
                mm3mm_value = std::stod(m_match[2].str());
                accel_value = std::stod(m_match[3].str());
                int isBridge = std::stoi(m_match[4].str());
                int roleChange = std::stoi(m_match[5].str());
                int isOverhang = std::stoi(m_match[6].str());
                
-                // Check if the extruder ID has changed
-                bool extruder_changed = (extruder_id != m_last_extruder_id);
-                m_last_extruder_id = extruder_id;
+                // Check if the filament config index has changed
+                bool config_index_changed = (config_index != m_last_config_index);
+                m_last_config_index = config_index;
                
                // Save the PA_CHANGE line to output later after finding feedrate
                pa_change_line = line;
@@ -212,23 +205,23 @@ std::string AdaptivePAProcessor::process_layer(std::string &&gcode) {
                
                // Calculate the predicted PA using the upcomming feature maximum feedrate
                // Get the interpolator for the active tool
-                AdaptivePAInterpolator* interpolator = getInterpolator(m_last_extruder_id);
+                AdaptivePAInterpolator* interpolator = getInterpolator(m_last_config_index);
                
                double predicted_pa = 0;
                double adaptive_PA_speed = 0;
            
                if(!interpolator){ // Tool not found in the interpolator map
                    // Tool not found in the PA interpolator to tool map
-                    predicted_pa = m_config.enable_pressure_advance.get_at(m_last_extruder_id) ? m_config.pressure_advance.get_at(m_last_extruder_id) : 0;
+                    predicted_pa = m_config.enable_pressure_advance.get_at(m_last_config_index) ? m_config.pressure_advance.get_at(m_last_config_index) : 0;
                    if(m_config.gcode_comments) output << "; APA: Tool doesnt have APA enabled\n";
-                } else if (!interpolator->isInitialised() || (!m_config.adaptive_pressure_advance.get_at(m_last_extruder_id)) )
+                } else if (!interpolator->isInitialised() || (!m_config.adaptive_pressure_advance.get_at(m_last_config_index)) )
                    // Check if the model is not initialised by the constructor for the active extruder
                    // Also check that adaptive PA is enabled for that extruder. This should not be needed
                    // as the PA change flag should not be set upstream (in the GCode.cpp file) if adaptive PA is disabled
                    // however check for robustness sake.
                {
                    // Model failed or adaptive pressure advance not enabled - use default value from m_config
-                    predicted_pa = m_config.enable_pressure_advance.get_at(m_last_extruder_id) ? m_config.pressure_advance.get_at(m_last_extruder_id) : 0;
+                    predicted_pa = m_config.enable_pressure_advance.get_at(m_last_config_index) ? m_config.pressure_advance.get_at(m_last_config_index) : 0;
                    if(m_config.gcode_comments) output << "; APA: Interpolator setup failed, using default pressure advance\n";
                } else { // Model setup succeeded
                    // Proceed to identify the print speed to use to calculate the adaptive PA value
@@ -249,18 +242,18 @@ std::string AdaptivePAProcessor::process_layer(std::string &&gcode) {
                    predicted_pa = (*interpolator)(mm3mm_value * adaptive_PA_speed, accel_value);
                    
                    // This is a bridge, use the dedicated PA setting.
-                    if(isBridge && m_config.adaptive_pressure_advance_bridges.get_at(m_last_extruder_id) > EPSILON)
-                        predicted_pa = m_config.adaptive_pressure_advance_bridges.get_at(m_last_extruder_id);
+                    if(isBridge && m_config.adaptive_pressure_advance_bridges.get_at(m_last_config_index) > EPSILON)
+                        predicted_pa = m_config.adaptive_pressure_advance_bridges.get_at(m_last_config_index);
                    
                    if (predicted_pa < 0) { // If extrapolation fails, fall back to the default PA for the extruder.
-                        predicted_pa = m_config.enable_pressure_advance.get_at(m_last_extruder_id) ? m_config.pressure_advance.get_at(m_last_extruder_id) : 0;
+                        predicted_pa = m_config.enable_pressure_advance.get_at(m_last_config_index) ? m_config.pressure_advance.get_at(m_last_config_index) : 0;
                        if(m_config.gcode_comments) output << "; APA: Interpolation failed, using fallback pressure advance value\n";
                    }
                }
                if(m_config.gcode_comments) {
                    // Output debug GCode comments
                    output << pa_change_line << '\n'; // Output PA change command tag
-                    if(isBridge && m_config.adaptive_pressure_advance_bridges.get_at(m_last_extruder_id) > EPSILON)
+                    if(isBridge && m_config.adaptive_pressure_advance_bridges.get_at(m_last_config_index) > EPSILON)
                        output << "; APA Model Override (bridge)\n";
                    output << "; APA Current Speed: " << std::to_string(m_current_feedrate) << "\n";
                    output << "; APA Next Speed: " << std::to_string(m_next_feedrate) << "\n";
@@ -269,7 +262,7 @@ std::string AdaptivePAProcessor::process_layer(std::string &&gcode) {
                    output << "; APA Flow rate: " << std::to_string(mm3mm_value * m_max_next_feedrate) << "\n";
                    output << "; APA Prev PA: " << std::to_string(m_last_predicted_pa) << " New PA: " << std::to_string(predicted_pa) << "\n"; 
                }
-                if (extruder_changed || std::fabs(predicted_pa - m_last_predicted_pa) > EPSILON) {
+                if (config_index_changed || std::fabs(predicted_pa - m_last_predicted_pa) > EPSILON) {
                    output << m_gcodegen.writer().set_pressure_advance(predicted_pa); // Use m_writer to set pressure advance
                    m_last_predicted_pa = predicted_pa; // Update the last predicted PA value
                }
@@ -11,7 +11,6 @@
 #include <regex>
 #include <memory>
 #include <map>
-#include <vector>
 #include "AdaptivePAInterpolator.hpp"

 namespace Slic3r {
@@ -33,7 +32,7 @@ public:
     *
     * @param gcodegen A reference to the GCode object that generates the G-code.
     */
-    AdaptivePAProcessor(GCode &gcodegen, const std::vector<unsigned int> &tools_used);
+    AdaptivePAProcessor(GCode &gcodegen);
    
    /**
     * @brief Processes a layer of G-code and applies adaptive pressure advance.
@@ -70,28 +69,25 @@ public:
    
 private:
    GCode &m_gcodegen; ///< Reference to the GCode object.
-    std::unordered_map<unsigned int, std::unique_ptr<AdaptivePAInterpolator>> m_AdaptivePAInterpolators; ///< Map between Interpolator objects and tool ID's
+    std::unordered_map<unsigned int, std::unique_ptr<AdaptivePAInterpolator>> m_AdaptivePAInterpolators; ///< Map between Interpolator objects and filament config indices (null when adaptive PA is off)
    const PrintConfig &m_config; ///< Reference to the print configuration.
    double m_last_predicted_pa; ///< Last predicted pressure advance value.
    double m_max_next_feedrate; ///< Maximum feed rate (speed) for the upcomming island. If no speed is found, the previous island speed is used.
    double m_next_feedrate; ///< First feed rate (speed) for the upcomming island.
    double m_current_feedrate; ///< Current, latest feedrate.
-    int m_last_extruder_id; ///< Last used extruder ID.
+    int m_last_config_index; ///< Filament config index of the last PA_CHANGE tag.

    std::regex m_pa_change_pattern; ///< Regular expression to detect PA_CHANGE pattern.
    std::regex m_g1_f_pattern; ///< Regular expression to detect G1 F pattern.
    std::smatch m_match; ///< Match results for regular expressions.

    /**
-     * @brief Get the PA interpolator attached to the specified tool ID.
+     * @brief Get the PA interpolator attached to the specified filament config index.
     *
-     * This method manually sets the adaptive PA internally held value.
-     * Call this when changing tools or in any other case where the internally assumed last PA value may be incorrect
-     *
-     * @param An integer with the tool ID for which the PA interpolation model is to be returned.
-     * @return The Adaptive PA Interpolator object corresponding to that tool.
+     * @param config_index The filament config index (one per filament and extruder variant) for which the PA interpolation model is to be returned.
+     * @return The Adaptive PA Interpolator object corresponding to that index, or nullptr when adaptive PA is off for it.
     */
-    AdaptivePAInterpolator* getInterpolator(unsigned int tool_id);
+    AdaptivePAInterpolator* getInterpolator(unsigned int config_index);
 };

 } // namespace Slic3r
@@ -13,8 +13,19 @@
 namespace Slic3r {


+// How many setters this thread holds, so the ones nested in another can skip
+// setlocale, which takes a lock the whole process shares on Windows.
+static thread_local int s_numeric_locale_depth = 0;
+
 CNumericLocalesSetter::CNumericLocalesSetter()
 {
+    // Nested in another setter on this thread, whose "C" the separator check
+    // confirms is still set.
+    if (s_numeric_locale_depth > 0 && is_decimal_separator_point()) {
+        m_nested = true;
+        ++ s_numeric_locale_depth;
+        return;
+    }
 #ifdef _WIN32
    _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
    m_orig_numeric_locale = std::setlocale(LC_NUMERIC, nullptr);
@@ -29,12 +40,17 @@ CNumericLocalesSetter::CNumericLocalesSetter()
    m_new_locale = newlocale(LC_NUMERIC_MASK, "C", m_new_locale);
    uselocale(m_new_locale);
 #endif
+    // Counted last, since the destructor does not run for a constructor that throws.
+    ++ s_numeric_locale_depth;
 }



 CNumericLocalesSetter::~CNumericLocalesSetter()
 {
+    -- s_numeric_locale_depth;
+    if (m_nested)
+        return;
 #ifdef _WIN32
    std::setlocale(LC_NUMERIC, m_orig_numeric_locale.data());
 #else
@@ -19,8 +19,13 @@ class CNumericLocalesSetter {
 public:
    CNumericLocalesSetter();
    ~CNumericLocalesSetter();
+    // A copy would restore the locale twice, and count down once more than up.
+    CNumericLocalesSetter(const CNumericLocalesSetter&) = delete;
+    CNumericLocalesSetter& operator=(const CNumericLocalesSetter&) = delete;

 private:
+    // Inside another setter on this thread, which does the setting and restoring.
+    bool m_nested { false };
 #ifdef _WIN32
    std::string m_orig_numeric_locale;
 #else
@@ -0,0 +1,65 @@
+#pragma once
+
+#include <algorithm>
+#include <cstddef>
+#include <type_traits>
+#include <utility>
+#include <variant>
+#include <vector>
+
+#include <tbb/blocked_range.h>
+#include <tbb/parallel_for.h>
+#include <tbb/task_arena.h>
+#include <tbb/task_group.h>
+
+#include "Exception.hpp"
+
+namespace Slic3r {
+
+// A batch of resolved presets, each a whole config, is what resolve_then_commit adds
+// to peak memory, so it stays far below a vendor's preset count and above any core count.
+inline constexpr size_t resolve_batch_size = 64;
+
+// Resolve `count` items that do not depend on each other and install them one at
+// a time.
+//
+// `resolve(i)` runs on any thread and must read only, since the items are
+// resolved side by side. `commit(i, resolved)` is called for every item in index
+// order, on the calling thread, and is where shared state is written.
+//
+// The items are worked through in batches, so what is resolved and held at once
+// does not grow with `count`. An exception from either callable propagates after
+// the batches before it have been committed. A cancellation of the caller's task
+// group, which stops a batch partway without an exception, throws RuntimeError
+// before that batch commits.
+//
+// `ChunkSetup`, when given, is constructed once for each piece of a batch TBB hands
+// out, for per-thread state a resolve would otherwise set up per item, such as the
+// C numeric locale, whose setting takes a lock the whole process shares.
+template<class ChunkSetup = std::monostate, class Resolve, class Commit>
+void resolve_then_commit(size_t count, Resolve resolve, Commit commit)
+{
+    using Resolved = std::invoke_result_t<Resolve&, size_t>;
+
+    std::vector<Resolved> resolved(std::min(count, resolve_batch_size));
+    for (size_t first = 0; first < count; first += resolve_batch_size) {
+        const size_t last = std::min(first + resolve_batch_size, count);
+        // Isolated, so a thread waiting on the batch runs none of the caller's other
+        // tasks before finishing it.
+        tbb::this_task_arena::isolate([&] {
+            tbb::parallel_for(tbb::blocked_range<size_t>(first, last),
+                [&](const tbb::blocked_range<size_t>& range) {
+                    ChunkSetup setup;
+                    (void) setup;
+                    for (size_t i = range.begin(); i < range.end(); ++ i)
+                        resolved[i - first] = resolve(i);
+                });
+        });
+        if (tbb::is_current_task_group_canceling())
+            throw RuntimeError("resolve_then_commit: canceled before the batch was resolved");
+        for (size_t i = first; i < last; ++ i)
+            commit(i, std::move(resolved[i - first]));
+    }
+}
+
+} // namespace Slic3r
@@ -5,6 +5,8 @@
 #include "Preset.hpp"
 #include "PresetBundle.hpp"
 #include "AppConfig.hpp"
+#include "LocalesUtils.hpp"
+#include "ParallelResolve.hpp"

 #ifdef _MSC_VER
    #define WIN32_LEAN_AND_MEAN
@@ -506,10 +508,11 @@ void Preset::normalize(DynamicPrintConfig &config)
    handle_legacy_sla(config);
 }

-std::string Preset::remove_invalid_keys(DynamicPrintConfig &config, const DynamicPrintConfig &default_config)
+std::string Preset::remove_invalid_keys(DynamicPrintConfig &config, const DynamicPrintConfig &default_config,
+                                        const DynamicPrintConfig *added)
 {
    std::string incorrect_keys;
-    for (const std::string &key : config.keys())
+    for (const std::string &key : (added != nullptr ? *added : config).keys())
        if (! default_config.has(key)) {
            if (incorrect_keys.empty())
                incorrect_keys = key;
@@ -621,7 +624,6 @@ void Preset::load_info(const std::string& file)
            }
            else if (v.first.compare("base_id") == 0) {
                this->base_id = v.second.get_value<std::string>();
-                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " load info from: " << file << " and base_id: " << this->base_id;
                if (this->base_id.compare("null") == 0)
                    this->base_id.clear();
            }
@@ -1669,6 +1671,169 @@ std::string PresetCollection::canonical_preset_name(const std::string &name, con
    return get_preset_canonical_name(parsed.bare, origin);
 }

+PresetCollection::UserPresetLoad PresetCollection::resolve_user_preset(
+    const boost::filesystem::path &file, const std::string &canonical_name,
+    const PresetOrigin &load_origin, ForwardCompatibilitySubstitutionRule substitution_rule,
+    const std::string &extruder_id_name, const std::string &extruder_variant_name,
+    std::set<std::string> *key_set1, std::set<std::string> *key_set2) const
+{
+    UserPresetLoad out;
+    out.preset = Preset(m_type, canonical_name, false);
+    Preset &preset = out.preset;
+    preset.bundle_id = load_origin.bundle_id;
+    preset.file = file.string();
+    // Load the preset file, apply preset values on top of defaults.
+    try {
+        fs::path idx_path(preset.file);
+        idx_path.replace_extension(".info");
+        if (fs::exists(idx_path)) {
+            out.info_file = idx_path.string();
+            preset.load_info(out.info_file);
+        }
+        DynamicPrintConfig config;
+        //BBS: change to json format
+        //ConfigSubstitutions config_substitutions = config.load_from_ini(preset.file, substitution_rule);
+        std::map<std::string, std::string> key_values;
+        std::string reason;
+        ConfigSubstitutions config_substitutions = config.load_from_json(preset.file, substitution_rule, key_values, reason);
+        if (! config_substitutions.empty())
+            out.substitutions.push_back({ preset.name, m_type, PresetConfigSubstitutions::Source::UserFile, preset.file, std::move(config_substitutions) });
+        if (!reason.empty()) {
+            out.discard_file = true;
+            out.errors.push_back((boost::format("parse config %1% failed") % preset.file).str());
+            return out;
+        }
+
+        std::string version_str = key_values[BBL_JSON_KEY_VERSION];
+        boost::optional<Semver> version = Semver::parse(version_str);
+        if (!version) return out;
+        preset.version = *version;
+
+        if (key_values.find(BBL_JSON_KEY_FILAMENT_ID) != key_values.end())
+            preset.filament_id = key_values[BBL_JSON_KEY_FILAMENT_ID];
+        if (key_values.find(BBL_JSON_KEY_DESCRIPTION) != key_values.end())
+            preset.description = key_values[BBL_JSON_KEY_DESCRIPTION];
+        if (key_values.find(BBL_JSON_KEY_INSTANTIATION) != key_values.end())
+            preset.is_visible = key_values[BBL_JSON_KEY_INSTANTIATION] != "false";
+
+        //Orca: find and use the inherit config as the base
+        const Preset* inherit_preset = nullptr;
+        ConfigOption* inherits_config = config.option(BBL_JSON_KEY_INHERITS);
+
+        // check inherits_config
+        if (inherits_config) {
+            ConfigOptionString * option_str = dynamic_cast<ConfigOptionString *> (inherits_config);
+            std::string inherits_value = option_str->value;
+            // Orca: try to find if the parent preset has been renamed
+            inherit_preset = this->find_preset2(inherits_value);
+            Preset::normalize_inherits(config, inherit_preset);
+        }
+        const Preset& default_preset = this->default_preset_for(config);
+        if (inherit_preset) {
+            preset.config = inherit_preset->config;
+            preset.filament_id = inherit_preset->filament_id;
+            extend_default_config_length(config, false, {});
+            preset.config.update_diff_values_to_child_config(config, extruder_id_name, extruder_variant_name, *key_set1, *key_set2);
+        }
+        else {
+            auto inherits_config2 = dynamic_cast<ConfigOptionString *>(inherits_config);
+            if ((inherits_config2 && !inherits_config2->value.empty())) {
+                out.errors.push_back((boost::format("can not find parent %1% for config %2%!") % inherits_config2->value % preset.file).str());
+                return out;
+            }
+            // We support custom root preset now
+            // Find a default preset for the config. The PrintPresetCollection provides different default preset based on the "printer_technology" field.
+            preset.config = default_preset.config;
+            preset.config.apply(std::move(config));
+            extend_default_config_length(preset.config, true, default_preset.config);
+        }
+
+        Preset::normalize(preset.config);
+        // Report configuration fields, which are misplaced into a wrong group.
+        std::string incorrect_keys = Preset::remove_invalid_keys(preset.config, default_preset.config);
+        if (!incorrect_keys.empty())
+            out.errors.push_back("Error in a preset file: The preset \"" + preset.file +
+                                 "\" contains the following incorrect keys: " + incorrect_keys + ", which were removed");
+
+        if (preset.type == Preset::TYPE_FILAMENT && preset.is_user() && preset.inherits().empty()) {
+            auto compatible_printers = dynamic_cast<ConfigOptionStrings *>(preset.config.option("compatible_printers", true));
+            if (compatible_printers && compatible_printers->values.empty()) {
+                size_t at_pos = canonical_name.find('@');
+                if (at_pos != std::string::npos && at_pos + 1 < canonical_name.length()) {
+                    compatible_printers->values.push_back(canonical_name.substr(at_pos + 1));
+                    out.save_compatible_printers = true;
+                }
+            }
+        }
+
+        preset.loaded = true;
+        out.complete = true;
+    } catch (const std::ifstream::failure &err) {
+        out.discard_file = true;
+        out.errors.push_back((boost::format("The user-config cannot be loaded: %1%. Reason: %2%") % preset.file % err.what()).str());
+        //throw Slic3r::RuntimeError(std::string("The selected preset cannot be loaded: ") + preset.file + "\n\tReason: " + err.what());
+    } catch (const std::runtime_error &err) {
+        out.discard_file = true;
+        out.errors.push_back((boost::format("Failed loading the user-config file: %1%. Reason: %2%") % preset.file % err.what()).str());
+        //throw Slic3r::RuntimeError(std::string("Failed loading the preset file: ") + preset.file + "\n\tReason: " + err.what());
+    }
+    out.install = true;
+    return out;
+}
+
+void PresetCollection::commit_user_preset(UserPresetLoad &&loaded, std::deque<Preset> &presets_loaded,
+                                          PresetsConfigSubstitutions &substitutions,
+                                          const std::function<void(Preset&)> &preset_loaded_fn,
+                                          bool read_only)
+{
+    Preset &preset = loaded.preset;
+    if (! loaded.info_file.empty())
+        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " load info from: " << loaded.info_file << " and base_id: " << preset.base_id;
+    append(substitutions, std::move(loaded.substitutions));
+    for (const std::string &error : loaded.errors) {
+        ++m_errors;
+        BOOST_LOG_TRIVIAL(error) << error;
+    }
+    if (loaded.discard_file && !read_only) {
+        fs::path file_path(loaded.preset.file);
+        if (fs::exists(file_path))
+            fs::remove(file_path);
+        file_path.replace_extension(".info");
+        if (fs::exists(file_path))
+            fs::remove(file_path);
+    }
+    if (!loaded.install)
+        return;
+
+    if (loaded.complete) {
+        if (loaded.save_compatible_printers) {
+            // A filesystem error from the rewrite is counted, and the preset still loads.
+            try {
+                if (!read_only)
+                    preset.save(nullptr);
+                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " added compatible_printers for preset: " << preset.name;
+            } catch (const std::runtime_error &err) {
+                ++m_errors;
+                BOOST_LOG_TRIVIAL(error) << __FUNCTION__ << " can not write compatible_printers back to " << preset.file << ": " << err.what();
+            }
+        }
+        //BBS: add some workaround for previous incorrect settings
+        if ((!preset.setting_id.empty())&&(preset.setting_id == preset.base_id))
+            preset.setting_id.clear();
+        BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " load preset: " << preset.name << " and filament_id: " << preset.filament_id << " and base_id: " << preset.base_id;
+        //BBS: add config related logs
+        BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << boost::format(", preset type %1%, name %2%, path %3%, is_system %4%, is_default %5% is_visible %6%")%Preset::get_type_string(m_type) %preset.name %preset.file %preset.is_system %preset.is_default %preset.is_visible;
+        // add alias for custom filament preset
+        set_custom_preset_alias(preset);
+    }
+
+    if (preset_loaded_fn != nullptr)
+        preset_loaded_fn(preset);
+
+    BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << __LINE__ << " load config successful and preset name is:" << preset.name;
+    presets_loaded.emplace_back(std::move(preset));
+}
+
 // Load all presets found in dir_path.
 // Throws an exception on error.
 void PresetCollection::load_presets(
@@ -1706,6 +1871,8 @@ void PresetCollection::load_presets(
    std::set<std::string> *key_set1 = nullptr, *key_set2 = nullptr;
    Preset::get_extruder_names_and_keysets(m_type, extruder_id_name, extruder_variant_name, &key_set1, &key_set2);

+    struct UserPresetFile { fs::path path; std::string canonical_name; };
+    std::vector<UserPresetFile> files;
    //BBS: change to json format
    for (auto &dir_entry : boost::filesystem::directory_iterator(dir))
    {
@@ -1721,149 +1888,26 @@ void PresetCollection::load_presets(
                BOOST_LOG_TRIVIAL(warning) << "Preset already present, not loading: " << canonical_name;
                continue;
            }
+            files.push_back({ dir_entry.path(), std::move(canonical_name) });
+        }
+    }
+
+    resolve_then_commit<CNumericLocalesSetter>(files.size(),
+        [&](size_t i) {
+            return this->resolve_user_preset(files[i].path, files[i].canonical_name, resolved_origin, substitution_rule,
+                                             extruder_id_name, extruder_variant_name, key_set1, key_set2);
+        },
+        [&](size_t, UserPresetLoad &&loaded) {
+            // Committing can remove an unreadable preset's file, and a filesystem error
+            // there is reported without stopping the rest of the directory.
            try {
-                Preset preset(m_type, canonical_name, false);
-                preset.bundle_id = resolved_origin.bundle_id;
-                preset.file = dir_entry.path().string();
-                // Load the preset file, apply preset values on top of defaults.
-                try {
-                    fs::path idx_path(preset.file);
-                    idx_path.replace_extension(".info");
-                    if (fs::exists(idx_path)) {
-                        preset.load_info(idx_path.string());
-                    }
-                    DynamicPrintConfig config;
-                    //BBS: change to json format
-                    //ConfigSubstitutions config_substitutions = config.load_from_ini(preset.file, substitution_rule);
-                    std::map<std::string, std::string> key_values;
-                    std::string reason;
-                    ConfigSubstitutions config_substitutions = config.load_from_json(preset.file, substitution_rule, key_values, reason);
-                    if (! config_substitutions.empty())
-                        substitutions.push_back({ preset.name, m_type, PresetConfigSubstitutions::Source::UserFile, preset.file, std::move(config_substitutions) });
-                    if (!reason.empty()) {
-                        fs::path file_path(preset.file);
-                        if (!read_only && fs::exists(file_path))
-                            fs::remove(file_path);
-                        file_path.replace_extension(".info");
-                        if (!read_only && fs::exists(file_path))
-                            fs::remove(file_path);
-                        BOOST_LOG_TRIVIAL(error) << boost::format("parse config %1% failed")%preset.file;
-                        ++m_errors;
-                        continue;
-                    }
-
-                    std::string version_str = key_values[BBL_JSON_KEY_VERSION];
-                    boost::optional<Semver> version = Semver::parse(version_str);
-                    if (!version) continue;
-                    preset.version = *version;
-
-                    if (key_values.find(BBL_JSON_KEY_FILAMENT_ID) != key_values.end())
-                        preset.filament_id = key_values[BBL_JSON_KEY_FILAMENT_ID];
-                    if (key_values.find(BBL_JSON_KEY_DESCRIPTION) != key_values.end())
-                        preset.description = key_values[BBL_JSON_KEY_DESCRIPTION];
-                    if (key_values.find(BBL_JSON_KEY_INSTANTIATION) != key_values.end())
-                        preset.is_visible = key_values[BBL_JSON_KEY_INSTANTIATION] != "false";
-
-                    //Orca: find and use the inherit config as the base
-                    Preset* inherit_preset = nullptr;
-                    ConfigOption* inherits_config = config.option(BBL_JSON_KEY_INHERITS);
-
-                    // check inherits_config
-                    if (inherits_config) {
-                        ConfigOptionString * option_str = dynamic_cast<ConfigOptionString *> (inherits_config);
-                        std::string inherits_value = option_str->value;
-                        // Orca: try to find if the parent preset has been renamed
-                        inherit_preset = this->find_preset2(inherits_value);
-                        Preset::normalize_inherits(config, inherit_preset);
-                    } else {
-                        ;
-                    }
-                    const Preset& default_preset = this->default_preset_for(config);
-                    if (inherit_preset) {
-                        preset.config = inherit_preset->config;
-                        preset.filament_id = inherit_preset->filament_id;
-                        extend_default_config_length(config, false, {});
-                        preset.config.update_diff_values_to_child_config(config, extruder_id_name, extruder_variant_name, *key_set1, *key_set2);
-                    }
-                    else {
-                        auto inherits_config2 = dynamic_cast<ConfigOptionString *>(inherits_config);
-                        if ((inherits_config2 && !inherits_config2->value.empty())) {
-                            BOOST_LOG_TRIVIAL(error) << boost::format("can not find parent %1% for config %2%!")%inherits_config2->value %preset.file;
-                            ++m_errors;
-                            continue;
-                        }
-                        // We support custom root preset now
-                        // Find a default preset for the config. The PrintPresetCollection provides different default preset based on the "printer_technology" field.
-                        preset.config = default_preset.config;
-                        preset.config.apply(std::move(config));
-                        extend_default_config_length(preset.config, true, default_preset.config);
-                    }
-                    BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " load preset: " << name << " and filament_id: " << preset.filament_id << " and base_id: " << preset.base_id;
-
-                    Preset::normalize(preset.config);
-                    // Report configuration fields, which are misplaced into a wrong group.
-                    std::string incorrect_keys = Preset::remove_invalid_keys(preset.config, default_preset.config);
-                    if (!incorrect_keys.empty()) {
-                        ++m_errors;
-                        BOOST_LOG_TRIVIAL(error)
-                            << "Error in a preset file: The preset \"" << preset.file
-                            << "\" contains the following incorrect keys: " << incorrect_keys << ", which were removed";
-                    }
-
-                    if (preset.type == Preset::TYPE_FILAMENT && preset.is_user() && preset.inherits().empty()) {
-                        auto compatible_printers = dynamic_cast<ConfigOptionStrings *>(preset.config.option("compatible_printers", true));
-                        if (compatible_printers && compatible_printers->values.empty()) {
-                            size_t at_pos = name.find('@');
-                            if (at_pos != std::string::npos && at_pos + 1 < name.length()) {
-                                compatible_printers->values.push_back(name.substr(at_pos + 1));
-                                if (!read_only)
-                                    preset.save(nullptr);
-                                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << " added compatible_printers for preset: " << name;
-                            }
-                        }
-                    }
-
-                    preset.loaded = true;
-                    //BBS: add some workaround for previous incorrect settings
-                    if ((!preset.setting_id.empty())&&(preset.setting_id == preset.base_id))
-                        preset.setting_id.clear();
-                    //BBS: add config related logs
-                    BOOST_LOG_TRIVIAL(debug) << __FUNCTION__ << boost::format(", preset type %1%, name %2%, path %3%, is_system %4%, is_default %5% is_visible %6%")%Preset::get_type_string(m_type) %preset.name %preset.file %preset.is_system %preset.is_default %preset.is_visible;
-                    // add alias for custom filament preset
-                    set_custom_preset_alias(preset);
-                } catch (const std::ifstream::failure &err) {
-                    ++m_errors;
-                    BOOST_LOG_TRIVIAL(error) << boost::format("The user-config cannot be loaded: %1%. Reason: %2%")%preset.file %err.what();
-                    fs::path file_path(preset.file);
-                    if (!read_only && fs::exists(file_path))
-                        fs::remove(file_path);
-                    file_path.replace_extension(".info");
-                    if (!read_only && fs::exists(file_path))
-                        fs::remove(file_path);
-                    //throw Slic3r::RuntimeError(std::string("The selected preset cannot be loaded: ") + preset.file + "\n\tReason: " + err.what());
-                } catch (const std::runtime_error &err) {
-                    ++m_errors;
-                    BOOST_LOG_TRIVIAL(error) << boost::format("Failed loading the user-config file: %1%. Reason: %2%")%preset.file %err.what();
-                    //throw Slic3r::RuntimeError(std::string("Failed loading the preset file: ") + preset.file + "\n\tReason: " + err.what());
-                    fs::path file_path(preset.file);
-                    if (!read_only && fs::exists(file_path))
-                        fs::remove(file_path);
-                    file_path.replace_extension(".info");
-                    if (!read_only && fs::exists(file_path))
-                        fs::remove(file_path);
-                }
-
-                if (preset_loaded_fn != nullptr)
-                    preset_loaded_fn(preset);
-
-                presets_loaded.emplace_back(preset);
-                BOOST_LOG_TRIVIAL(info) << __FUNCTION__ << __LINE__ << " load config successful and preset name is:" << preset.name;
+                this->commit_user_preset(std::move(loaded), presets_loaded, substitutions, preset_loaded_fn, read_only);
            } catch (const std::runtime_error &err) {
                errors_cummulative += err.what();
                errors_cummulative += "\n";
            }
-        }
-    }
+        });
+
    if (presets_loaded.size() > 0)
        m_presets.insert(m_presets.end(), std::make_move_iterator(presets_loaded.begin()), std::make_move_iterator(presets_loaded.end()));
    sort_presets();
@@ -2827,6 +2871,18 @@ std::pair<Preset*, bool> PresetCollection::load_external_preset(
    return std::make_pair(&preset, false);
 }

+Preset& PresetCollection::append_preset(std::string &&path, const std::string &name, DynamicPrintConfig &&config)
+{
+    lock();
+    Preset &preset = m_presets.emplace_back(m_type, name, false);
+    preset.file = std::move(path);
+    preset.config = std::move(config);
+    preset.loaded = true;
+    preset.is_dirty = false;
+    unlock();
+    return preset;
+}
+
 Preset& PresetCollection::load_preset(const std::string &path, const std::string &name, DynamicPrintConfig &&config, bool select, Semver file_version)
 {
    lock();
@@ -3846,28 +3902,53 @@ bool PresetCollection::select_preset_by_name_strict(const std::string &name)
    return false;
 }

-// Merge one vendor's presets with the other vendor's presets, report duplicates.
-std::vector<std::string> PresetCollection::merge_presets(PresetCollection &&other, const VendorMap &new_vendors)
+std::vector<std::vector<std::string>> PresetCollection::merge_presets(const std::vector<PresetCollection*> &others, const VendorMap &new_vendors)
 {
-    std::vector<std::string> duplicates;
-    for (Preset &preset : other.m_presets) {
-        if (preset.is_default || preset.is_external)
-            continue;
-        Preset key(m_type, preset.name);
-        auto it = (m_type == Preset::TYPE_FILAMENT)
-            ? std::lower_bound(m_presets.begin() + m_num_default_presets, m_presets.end(), key, filament_preset_less)
-            : std::lower_bound(m_presets.begin() + m_num_default_presets, m_presets.end(), key);
-        if (it == m_presets.end() || it->name != preset.name) {
+    auto less = [this](const Preset &a, const Preset &b) {
+        return m_type == Preset::TYPE_FILAMENT ? filament_preset_less(a, b) : a < b;
+    };
+    struct Incoming { Preset *preset; size_t source; };
+    auto incoming_less = [&less](const Incoming &a, const Incoming &b) { return less(*a.preset, *b.preset); };
+    // Each of `others` is sorted, so its presets form one sorted run.
+    std::vector<Incoming> incoming;
+    std::vector<size_t>   run_ends { 0 };
+    for (size_t source = 0; source < others.size(); ++ source) {
+        for (Preset &preset : others[source]->m_presets)
+            if (! preset.is_default && ! preset.is_external)
+                incoming.push_back({ &preset, source });
+        assert(std::is_sorted(incoming.begin() + run_ends.back(), incoming.end(), incoming_less));
+        run_ends.push_back(incoming.size());
+    }
+    // Merged pairwise and stably, so equal names stay in the order of `others`.
+    const size_t runs = others.size();
+    for (size_t width = 1; width < runs; width *= 2)
+        for (size_t i = 0; i + width < runs; i += 2 * width)
+            std::inplace_merge(incoming.begin() + run_ends[i], incoming.begin() + run_ends[i + width],
+                               incoming.begin() + run_ends[std::min(i + 2 * width, runs)], incoming_less);
+
+    std::vector<std::vector<std::string>> duplicates(others.size());
+    std::deque<Preset> merged;
+    auto own = m_presets.begin() + m_num_default_presets;
+    std::move(m_presets.begin(), own, std::back_inserter(merged));
+    // On equal names this collection's preset is kept, else the earliest of `others`,
+    // and each repeat is listed under the collection it came from.
+    for (auto next = incoming.begin(); own != m_presets.end() || next != incoming.end();) {
+        if (next == incoming.end() || (own != m_presets.end() && ! less(*next->preset, *own)))
+            merged.emplace_back(std::move(*own ++));
+        else {
+            Preset &preset = *(next ++)->preset;
            if (preset.vendor != nullptr) {
                // Re-assign a pointer to the vendor structure in the new PresetBundle.
                auto it = new_vendors.find(preset.vendor->id);
                assert(it != new_vendors.end());
                preset.vendor = &it->second;
            }
-            m_presets.emplace(it, std::move(preset));
-        } else
-            duplicates.emplace_back(std::move(preset.name));
+            merged.emplace_back(std::move(preset));
        }
+        for (; next != incoming.end() && next->preset->name == merged.back().name; ++ next)
+            duplicates[next->source].emplace_back(next->preset->name);
+    }
+    m_presets = std::move(merged);
    return duplicates;
 }

@@ -445,7 +445,10 @@ public:
    static std::string                      remove_suffix_modified(const std::string& name);
    static void                             normalize(DynamicPrintConfig &config);
    // Report configuration fields, which are misplaced into a wrong group, remove them from the config.
-    static std::string                      remove_invalid_keys(DynamicPrintConfig &config, const DynamicPrintConfig &default_config);
+    // `added`, when given, is the diff applied over a copy of default_config, and only
+    // its keys are checked, since no other key can be missing from default_config.
+    static std::string                      remove_invalid_keys(DynamicPrintConfig &config, const DynamicPrintConfig &default_config,
+                                                                const DynamicPrintConfig *added = nullptr);

    // BBS: move constructor to public
    Preset(Type type, const std::string &name, bool is_default = false) : type(type), is_default(is_default), name(name) {}
@@ -801,6 +804,8 @@ public:
    // Return number of presets including the "- default -" preset.
    size_t          size() const                { return m_presets.size(); }
    bool            has_defaults_only() const   { return m_presets.size() <= m_num_default_presets; }
+    // How many presets this collection refused or repaired while loading.
+    int             error_count() const         { return m_errors; }

    // For Print / Filament presets, disable those, which are not compatible with the printer.
    template<typename PreferedCondition>
@@ -874,8 +879,10 @@ protected:
    // This is a temporary state, which shall be fixed immediately by the following step.
    bool            select_preset_by_name_strict(const std::string &name);

-    // Merge one vendor's presets with the other vendor's presets, report duplicates.
-    std::vector<std::string> merge_presets(PresetCollection &&other, const VendorMap &new_vendors);
+    // Move the presets of `others` into this collection in one pass. A name this
+    // collection or an earlier one of `others` already has is left out, and reported
+    // in the list of the collection that repeats it.
+    std::vector<std::vector<std::string>> merge_presets(const std::vector<PresetCollection*> &others, const VendorMap &new_vendors);

    // Update m_map_alias_to_profile_name from loaded system profiles.
 	void 			update_map_alias_to_profile_name();
@@ -890,6 +897,43 @@ protected:
    void            set_custom_preset_alias(Preset &preset);

 private:
+    // One preset file read and flattened against the presets already in this
+    // collection, before anything the collection shares has been touched.
+    struct UserPresetLoad
+    {
+        Preset      preset;
+        // Joins the collection. A file that threw partway still joins it, without
+        // the steps that did not run.
+        bool        install { false };
+        // The whole of the load ran, so the preset is ready to be aliased.
+        bool        complete { false };
+        // A filament preset that named no compatible printer and was given one from
+        // its name, which commit writes back to its file.
+        bool        save_compatible_printers { false };
+        // Unreadable, so commit removes it and its .info file.
+        bool        discard_file { false };
+        // The .info file read beside the preset, which commit logs.
+        std::string info_file;
+        // Counted and logged by commit, in the order the directory listed the files.
+        std::vector<std::string>   errors;
+        PresetsConfigSubstitutions substitutions;
+    };
+
+    // Read and flatten one preset file. It reads only, and resolves against the presets
+    // loaded before this pass, never another file of the same pass, so the files of a
+    // pass are independent of each other.
+    UserPresetLoad  resolve_user_preset(const boost::filesystem::path &file, const std::string &canonical_name,
+                                        const PresetOrigin &load_origin, ForwardCompatibilitySubstitutionRule substitution_rule,
+                                        const std::string &extruder_id_name, const std::string &extruder_variant_name,
+                                        std::set<std::string> *key_set1, std::set<std::string> *key_set2) const;
+
+    // Install one resolved preset. The collection, its alias maps, the error count
+    // and the preset files on disk are touched here and only here.
+    void            commit_user_preset(UserPresetLoad &&loaded, std::deque<Preset> &presets_loaded,
+                                       PresetsConfigSubstitutions &substitutions,
+                                       const std::function<void(Preset&)> &preset_loaded_fn,
+                                       bool read_only);
+
    std::string canonical_preset_name(const std::string &name, const PresetOrigin &load_origin = PresetOrigin()) const;

    // Comparator that sorts "Generic " prefixed presets before others, then alphabetically within each group.
@@ -901,6 +945,10 @@ private:
        return a.name < b.name;
    }

+    // Append a preset without keeping the collection sorted, for a caller installing
+    // many at once; find_preset() is unusable until sort_presets() runs.
+    Preset& append_preset(std::string &&path, const std::string &name, DynamicPrintConfig &&config);
+
    // Sort presets: filament presets use generic-first ordering, others sort alphabetically.
    void sort_presets() {
        if (m_type == Preset::TYPE_FILAMENT)
@@ -15,6 +15,7 @@
 #include <unordered_map>
 #include <optional>
 #include <array>
+#include <atomic>
 #include <boost/filesystem/path.hpp>
 #include <unordered_set>

@@ -622,36 +623,180 @@ public:
    // default_filament_profile must resolve to a system filament.
    bool check_printer_default_materials() const;

-    // Merge one vendor's presets with the other vendor's presets, report duplicates.
-    // Public so per-vendor-cache consumers (e.g. the setup wizard) can assemble a
-    // bundle out of several per-vendor caches loaded into separate PresetBundle instances.
-    std::vector<std::string>    merge_presets(PresetBundle &&other);
+    // One vendor to load, and the directory it is installed in.
+    struct VendorSource
+    {
+        std::string             name;
+        boost::filesystem::path dir;
+    };
+
+    // Load `vendors` into this bundle, the Orca filament library directly and every
+    // other vendor in parallel into a bundle of its own that inherits from it, merged
+    // in the order given. A vendor that cannot be loaded has its error added to the
+    // returned text, or thrown in validation mode, and its name to `failed`; it is
+    // left out, except for the library, which keeps what it installed before the
+    // failure. Once `cancel` is set, no further vendor starts loading.
+    std::pair<PresetsConfigSubstitutions, std::string> load_vendors(const std::vector<VendorSource>& vendors,
+        ForwardCompatibilitySubstitutionRule compatibility_rule, bool allow_cache,
+        const std::atomic<bool>* cancel = nullptr, std::vector<std::string>* failed = nullptr);

 private:
-    // Load one vendor from the preset cache installed in `dir`, judged against
-    // the vendor profile there. False, with this bundle left clean, when there
-    // is no usable cache and the vendor has to be parsed. This is how
-    // load_vendor_configs_from_json reads a cache.
-    bool load_vendor_cache(const boost::filesystem::path& dir, const std::string& vendor_name, const PresetBundle* base_bundle);
+    // Move the presets and vendor profiles of `others` into this bundle, in one pass
+    // over each collection. A preset whose name this bundle or an earlier one of
+    // `others` already has is left out and listed under the bundle that repeats it.
+    std::vector<std::vector<std::string>> merge_presets(const std::vector<PresetBundle*> &others);

-    // Load one source-form preset entry into this bundle: resolve `inherits`
-    // and `include`, flatten, validate and register the preset. Returns the
-    // reason loading failed, empty on success. See the definition for the
-    // sharing contract between the JSON parse and the cache load.
-    // retain_configs / retain_includes, when non-null, name the only presets
-    // registered into config_maps / include_maps (a config copy each). The
-    // cache load passes the names its entries inherit / include — the only
-    // ones ever looked up again; the JSON parse retains all, not knowing what
-    // later subfiles name.
-    std::string load_vendor_preset(const CachedPreset& entry,
-        const std::string& path, const std::string& vendor_name,
-        const PresetBundle* base_bundle,
-        LoadConfigBundleAttributes flags,
-        ConfigSubstitutionContext& substitution_context, PresetsConfigSubstitutions& substitutions,
-        std::map<std::string, DynamicPrintConfig>& config_maps, std::map<std::string, DynamicPrintConfig>& include_maps,
-        std::map<std::string, std::string>& filament_id_maps,
-        PresetCollection* presets_collection, size_t& count, bool is_from_lib,
-        const std::set<std::string>* retain_configs = nullptr, const std::set<std::string>* retain_includes = nullptr);
+    // What parsing one entry's JSON sub-file reported. Its errors and warnings are
+    // logged when the entry installs, so they come out in listing order with the
+    // entry's install errors, as parsing and installing one entry at a time leaves them.
+    struct EntryParse
+    {
+        ConfigSubstitutions      substitutions;
+        // Counted in the bundle's error count.
+        std::vector<std::string> errors;
+        std::vector<std::string> warnings;
+    };
+
+    // An EntryParse for each entry of the VendorCacheData list of the same name.
+    struct VendorParse
+    {
+        std::vector<EntryParse> process_entries;
+        std::vector<EntryParse> filament_entries;
+        std::vector<EntryParse> machine_entries;
+    };
+
+    // One vendor read from its cache or its JSONs by read_vendor, for
+    // install_vendor_read to install.
+    struct VendorRead
+    {
+        std::string                          dir;
+        std::string                          vendor_name;
+        LoadConfigBundleAttributes           flags;
+        ForwardCompatibilitySubstitutionRule compatibility_rule;
+        // The errors this bundle had counted before the read, which the cache stamp leaves out.
+        int                                  errors_at_entry { 0 };
+        // A whole-vendor load, which can read a cache and write one.
+        bool                                 cacheable { false };
+        // Read from the cache at cache_path, which install can still reject.
+        bool                                 from_cache { false };
+        std::string                          cache_path;
+        // Only the vendor profile was asked for.
+        bool                                 vendor_only { false };
+        VendorCacheData                      data;
+        // What each entry's JSON parse reported, and whether and with which version
+        // the cache is written once the entries install.
+        VendorParse                          parsed;
+        bool                                 will_cache { false };
+        std::string                          version;
+        // The sub-file the parse stopped at, its kind, why, and the errors it reported.
+        std::string                          reason;
+        std::string                          failed_subfile;
+        const char*                          failed_kind { nullptr };
+        std::vector<std::string>             failed_errors;
+    };
+
+    // Read a vendor into this bundle's vendor profiles and `data`, from its cache
+    // when one covers it, else from its JSONs; nothing is installed. Throws
+    // ConfigurationError when the vendor's own JSON cannot be parsed.
+    VendorRead read_vendor(const std::string& dir, const std::string& vendor_name, LoadConfigBundleAttributes flags,
+                           ForwardCompatibilitySubstitutionRule compatibility_rule, bool allow_cache);
+
+    // Parse the vendor's JSONs into `read`, up to the first sub-file that fails.
+    void parse_vendor_json(VendorRead& read);
+
+    // Install what read_vendor read, against base_bundle's filament library. A cache
+    // that cannot be installed is replaced by a parse of the JSONs. Throws
+    // ConfigurationError at the first entry that cannot be installed, or after
+    // installing the entries before a sub-file that could not be parsed.
+    std::pair<PresetsConfigSubstitutions, size_t> install_vendor_read(VendorRead&& read, const PresetBundle* base_bundle);
+
+    // Install a cache's entries. False, with this bundle left clean, when one of them
+    // cannot be installed.
+    bool install_vendor_cache(const std::string& cache_path, const std::string& vendor_name, VendorCacheData&& data,
+                              const PresetBundle* base_bundle);
+
+    // Log and count errors reported by a resolve or a parse.
+    void log_errors(const std::vector<std::string>& errors);
+
+    // The state of installing one collection of one vendor, which
+    // resolve_vendor_preset reads through a const reference and only
+    // commit_vendor_preset writes.
+    struct VendorInstall
+    {
+        // The directory holding <vendor_name>/, whose sub-paths the entries name.
+        std::string                path;
+        std::string                vendor_name;
+        const VendorProfile*       vendor_profile;
+        const PresetBundle*        base_bundle;
+        LoadConfigBundleAttributes flags;
+        PresetCollection*          presets;
+        // The Orca filament library, which keeps every config for other vendors to
+        // resolve against.
+        bool                       is_from_lib;
+        PresetsConfigSubstitutions* substitutions;
+        // The names some entry inherits / includes, the only ones whose configs /
+        // include diffs are looked up again.
+        std::set<std::string>      inherited;
+        std::set<std::string>      included;
+        std::map<std::string, DynamicPrintConfig> config_maps;
+        std::map<std::string, DynamicPrintConfig> include_maps;
+        std::map<std::string, std::string>        filament_id_maps;
+        std::unordered_set<std::string>           installed_names;
+        size_t                     count { 0 };
+    };
+
+    // Install a vendor's source-form entries, parsed from its JSON or read from its
+    // cache: processes, then filaments, then printers. Both loads go through here,
+    // so a cache-loaded bundle cannot come out different from a JSON-loaded one.
+    // `parsed` is given for entries parsed just now. `complete` says the entries
+    // are the vendor's whole lists; only then are the filament library's configs
+    // and filament ids left in m_config_maps and m_filament_id_maps. Returns the
+    // number of presets installed, and throws ConfigurationError at the first
+    // entry that cannot be installed.
+    size_t install_vendor(const std::string& path, const std::string& vendor_name, const PresetBundle* base_bundle,
+                          LoadConfigBundleAttributes flags, const VendorCacheData& entries,
+                          VendorParse* parsed, bool complete, PresetsConfigSubstitutions& substitutions);
+
+    // Install one collection's entries in the order they are listed.
+    void install_vendor_entries(VendorInstall& install, const std::vector<CachedPreset>& entries,
+                                std::vector<EntryParse>* parsed);
+
+    // One entry flattened against the preset it inherits, before anything this
+    // bundle shares has been touched.
+    struct PresetInstall
+    {
+        DynamicPrintConfig       config;
+        std::string              file_path;
+        // Empty when the preset is its own alias.
+        std::string              alias;
+        std::string              filament_id;
+        std::vector<std::string> renamed_from;
+        // Reported by commit, so resolving entries together leaves the log and
+        // the error count as one entry at a time produces them.
+        std::vector<std::string> errors;
+        // What a base states for the presets that include it, when it is retained.
+        std::optional<DynamicPrintConfig> included;
+        // The config kept for the entries that inherit this one, or for other
+        // vendors when this is the filament library.
+        std::optional<DynamicPrintConfig> retained;
+        // Not instantiated, so it contributes a config and no preset.
+        bool                     config_only { false };
+        // Non-empty when the entry is rejected, and says why.
+        std::string              reason;
+    };
+
+    // Flatten one entry against the config it inherits, from this collection's
+    // config_maps or base_bundle's filament library, with the include diffs it
+    // names layered in. It looks up nothing but the names the entry inherits and
+    // includes, and writes nothing.
+    PresetInstall resolve_vendor_preset(const CachedPreset& entry, const VendorInstall& install) const;
+
+    // Install a resolved entry. The collections, the maps in `install` and the
+    // error count are touched here and only here, one entry at a time.
+    // Presets are appended, so a repeated name is caught with `installed_names`,
+    // and the collection is sorted once every entry is in.
+    std::string commit_vendor_preset(const CachedPreset& entry, PresetInstall&& resolved,
+                                     ConfigSubstitutions&& substitutions, VendorInstall& install);

    // Clear every collection's m_printer_hold_alias, which reset() leaves alone.
    void clear_printer_hold_aliases();
@@ -109,7 +109,7 @@ void skip_config(cereal::BinaryInputArchive& ar, const CacheDictionary& dict);

 // One preset as its JSON subfile states it: the config diff, the names of the
 // preset it inherits and the presets it includes, and the parse metadata —
-// everything the parse phase of load_vendor_configs_from_json extracts and
+// everything PresetBundle::parse_vendor_json extracts and
 // nothing it derives. Inheritance and includes are resolved when the entry is
 // installed, against whatever filament library is loaded then, so a cache
 // carries no other vendor's values and no other vendor's update can make it
@@ -2439,12 +2439,18 @@ StringObjectException Print::validate(std::vector<StringObjectException> *warnin
            if (m_default_region_config.precise_outer_wall && m_default_region_config.wall_sequence != WallSequence::InnerOuter)
                warn(L("The precise wall option will be ignored for outer-inner or inner-outer-inner wall sequences."), "precise_outer_wall");

-            // check adaptive pressure advance model
-            for (unsigned int extruder_id : extruders) {
-                if (m_config.adaptive_pressure_advance.get_at(extruder_id) && 
-                    m_config.enable_pressure_advance.get_at(extruder_id)) {
+            // check adaptive pressure advance model of every extruder variant column of the used filaments
+            const std::vector<int> &self_index = m_config.filament_self_index.values;
+            const size_t pa_columns = std::max(m_config.adaptive_pressure_advance_model.size(), size_t(extruders.back()) + 1);
+            for (size_t column = 0; column < pa_columns; ++column) {
+                // filament_self_index maps a column to its filament once the filament arrays hold one column per variant
+                const unsigned int filament_id = self_index.size() == pa_columns ? self_index[column] - 1 : column;
+                if (!std::binary_search(extruders.begin(), extruders.end(), filament_id))
+                    continue;
+                if (m_config.adaptive_pressure_advance.get_at(column) &&
+                    m_config.enable_pressure_advance.get_at(column)) {

-                    const std::string pa_model = m_config.adaptive_pressure_advance_model.get_at(extruder_id);
+                    const std::string pa_model = m_config.adaptive_pressure_advance_model.get_at(column);
                    if (!pa_model.empty()) {
                        std::string validation_error = AdaptivePAProcessor::validate_adaptive_pa_model(pa_model);
                        if (!validation_error.empty()) {
@@ -9403,6 +9403,10 @@ void PrintConfigDef::handle_legacy_composite(DynamicPrintConfig &config)
        }
        config.set_key_value("wiping_volumes_use_custom_matrix", new ConfigOptionBool(custom));
    }
+
+    // Orca: a config saved before a key joined filament_options_with_variant stores it once per filament
+    // rather than once per filament variant, and one exported by an older CLI may store a single value.
+    normalize_filament_values_to_variants(config);
 }

 const PrintConfigDef print_config_def;
@@ -9505,6 +9509,13 @@ std::set<std::string> filament_options_with_variant = {
    "filament_ironing_spacing",
    "filament_ironing_inset",
    "filament_ironing_speed",
+    // Orca: pressure advance
+    "enable_pressure_advance",
+    "pressure_advance",
+    "adaptive_pressure_advance",
+    "adaptive_pressure_advance_model",
+    "adaptive_pressure_advance_overhangs",
+    "adaptive_pressure_advance_bridges",
    "activate_air_filtration",
    "activate_air_filtration_during_print",
    "activate_air_filtration_on_completion",
@@ -10712,6 +10723,25 @@ void set_variant_override(ConfigOptionVectorBase &target, const ConfigOptionVect
    target.set_to_index(&source, indices, stride);
 }

+void normalize_filament_values_to_variants(DynamicPrintConfig &config)
+{
+    const auto *self_index = config.option<ConfigOptionInts>("filament_self_index");
+    if (self_index == nullptr || self_index->empty())
+        return;
+    const int filament_count = *std::max_element(self_index->values.begin(), self_index->values.end());
+    if (filament_count <= 0 || size_t(filament_count) >= self_index->size())
+        return;
+    for (const std::string &key : filament_options_with_variant) {
+        auto *opt = dynamic_cast<ConfigOptionVectorBase *>(config.option(key));
+        if (opt == nullptr || (opt->size() != size_t(filament_count) && opt->size() != 1))
+            continue;
+        std::unique_ptr<ConfigOption> per_filament(opt->clone());
+        // set_at() takes the first value for a filament past the end of a single-value vector
+        for (size_t variant = 0; variant < self_index->size(); ++variant)
+            opt->set_at(per_filament.get(), variant, self_index->values[variant] - 1);
+    }
+}
+

 //used for object/region config
 //use the smallest of multiple to single
@@ -884,6 +884,11 @@ extern std::set<std::string> empty_options;
 void set_variant_override(ConfigOptionVectorBase &target, const ConfigOptionVectorBase &source,
                          const std::vector<int> &variant_index, int stride = 1);

+// Orca: lays every filament_options_with_variant option out one value per filament variant, as
+// filament_self_index maps the variants to filaments. An option holding one value per filament, or a
+// single value, gives every variant of a filament that filament's value; other lengths are left alone.
+void normalize_filament_values_to_variants(DynamicPrintConfig &config);
+
 extern std::set<std::string> filament_dev_options;

 extern void update_static_print_config_from_dynamic(ConfigBase& config, const DynamicPrintConfig& dest_config, std::vector<int> variant_index, std::set<std::string>& key_set1, int stride = 1);
@@ -256,10 +256,19 @@ extern bool is_gallery_file(const std::string& path, char const* type);
 extern bool is_shapes_dir(const std::string& dir);
 //BBS: add json support
 extern bool is_json_file(const std::string& path);
-// True if rel_path is relative, has no ".." component and, joined to root, still resolves inside it.
+// True if rel_path is relative, has no ".." component or embedded NUL and, joined to root, still resolves inside it.
 // Both '/' and '\\' are treated as separators on every platform, so an archive rejected on one OS
 // is rejected on all of them.
 extern bool is_path_within_root(const std::string &rel_path, const boost::filesystem::path &root);
+// True if a symlink stored at link_rel_path (relative to root) with this target stays inside root: the target
+// must be relative, and joined to the link's directory it must pass is_path_within_root.
+extern bool is_symlink_target_within_root(const std::string &link_rel_path, const std::string &target, const boost::filesystem::path &root);
+// True if path names an entry strictly inside root: it must be spelled with root as its prefix,
+// and must still resolve inside root once symlinks are followed.
+extern bool is_absolute_path_within_root(const boost::filesystem::path &path, const boost::filesystem::path &root);
+// True if a file with this name is of a type that the desktop opens as plain content, so it cannot run code.
+// Anything unknown is not safe.
+extern bool is_safe_to_open_file_name(const std::string &file_name);

 // Orca: custom protocal support utils
 inline bool is_orca_open(const std::string& url) { return boost::starts_with(url, "orcaslicer://open"); }
@@ -4,6 +4,9 @@
 #include "miniz_extension.hpp"
 #include "Utils.hpp"

+#include <boost/filesystem.hpp>
+#include <boost/log/trivial.hpp>
+
 #if defined(_MSC_VER) || defined(__MINGW64__)
 #include "boost/nowide/cstdio.hpp"
 #endif
@@ -115,6 +118,66 @@ std::string decode_archive_entry_path(mz_zip_archive *zip, const mz_zip_archive_
    return decode_zip_unicode_path_extra_field(extra.substr(0, extra_size > 0 ? extra_size - 1 : 0), stat.m_filename);
 }

+bool extract_archive_confined(const std::string &zip_path_utf8, const std::string &dest_dir)
+{
+    mz_zip_archive archive;
+    mz_zip_zero_struct(&archive);
+
+    if (!open_zip_reader(&archive, zip_path_utf8)) {
+        BOOST_LOG_TRIVIAL(error) << "Unable to open zip reader for " << zip_path_utf8;
+        return false;
+    }
+
+    const mz_uint num_entries = mz_zip_reader_get_num_files(&archive);
+    mz_zip_archive_file_stat stat;
+
+    // Validate every entry first so an archive with a single escaping entry leaves no partial output behind.
+    const boost::filesystem::path root(dest_dir);
+    for (mz_uint i = 0; i < num_entries; ++i) {
+        if (mz_zip_reader_file_stat(&archive, i, &stat) && !is_path_within_root(stat.m_filename, root)) {
+            BOOST_LOG_TRIVIAL(error) << "Unzip: rejecting " << zip_path_utf8 << ", entry " << stat.m_filename << " resolves outside " << dest_dir;
+            close_zip_reader(&archive);
+            return false;
+        }
+    }
+
+    for (mz_uint i = 0; i < num_entries; ++i) {
+        if (!mz_zip_reader_file_stat(&archive, i, &stat)) {
+            BOOST_LOG_TRIVIAL(warning) << "Unzip: read file stat failed";
+            continue;
+        }
+        const std::string dest_file = dest_dir + "/" + stat.m_filename;
+        try {
+            if (stat.m_is_directory) {
+                const boost::filesystem::path dest_path(dest_file);
+                if (!boost::filesystem::exists(dest_path))
+                    boost::filesystem::create_directories(dest_path);
+                continue;
+            }
+            if (stat.m_uncomp_size == 0) {
+                BOOST_LOG_TRIVIAL(warning) << "Unzip: invalid size for file " << stat.m_filename;
+                continue;
+            }
+            // Replace a symlink at the destination rather than writing through it.
+            const boost::filesystem::path dest_path(dest_file);
+            if (boost::filesystem::is_symlink(boost::filesystem::symlink_status(dest_path)))
+                boost::filesystem::remove(dest_path);
+            if (!mz_zip_reader_extract_to_file(&archive, stat.m_file_index, dest_file.c_str(), 0)) {
+                BOOST_LOG_TRIVIAL(error) << "Unzip: extract file " << stat.m_filename << " to dest " << dest_file << " failed";
+                close_zip_reader(&archive);
+                return false;
+            }
+            BOOST_LOG_TRIVIAL(info) << "Unzip: successfully extract file " << stat.m_file_index << " to " << dest_file;
+        } catch (const std::exception &e) {
+            close_zip_reader(&archive);
+            BOOST_LOG_TRIVIAL(error) << "Unzip: archive read exception: " << e.what();
+            return false;
+        }
+    }
+    close_zip_reader(&archive);
+    return true;
+}
+
 MZ_Archive::MZ_Archive()
 {
    mz_zip_zero_struct(&arch);
@@ -11,6 +11,8 @@ bool open_zip_writer(mz_zip_archive *zip, const std::string &fname_utf8);
 bool close_zip_reader(mz_zip_archive *zip);
 bool close_zip_writer(mz_zip_archive *zip);
 std::string decode_archive_entry_path(mz_zip_archive *zip, const mz_zip_archive_file_stat &stat);
+// Extracts every entry of the archive under dest_dir. Nothing is written if any entry would resolve outside dest_dir.
+bool extract_archive_confined(const std::string &zip_path_utf8, const std::string &dest_dir);

 class MZ_Archive {
 public:
@@ -70,6 +70,7 @@
 #include <boost/shared_ptr.hpp>

 #include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/case_conv.hpp>
 #include <boost/filesystem.hpp>
 #include <boost/filesystem/path.hpp>
 #include <boost/nowide/fstream.hpp>
@@ -1093,6 +1094,9 @@ bool is_path_within_root(const std::string &rel_path, const boost::filesystem::p
    auto is_separator = [](char c) { return c == '/' || c == '\\'; };
    if (rel_path.empty() || is_separator(rel_path.front()) || (rel_path.size() > 1 && rel_path[1] == ':'))
        return false;
+    // The filesystem calls stop at a NUL, so they would act on a shorter path than the one checked here.
+    if (rel_path.find('\0') != std::string::npos)
+        return false;
    for (size_t start = 0; start <= rel_path.size();) {
        size_t end = start;
        while (end < rel_path.size() && !is_separator(rel_path[end]))
@@ -1103,7 +1107,10 @@ bool is_path_within_root(const std::string &rel_path, const boost::filesystem::p
    }
    // Resolve against the canonical root so a symlink inside it cannot lead back out.
    try {
-        const std::string root_str = boost::filesystem::weakly_canonical(root).string();
+        std::string root_str = boost::filesystem::weakly_canonical(root).string();
+        // A trailing separator on root would otherwise fail the prefix match below for every path.
+        while (!root_str.empty() && (root_str.back() == '/' || root_str.back() == boost::filesystem::path::preferred_separator))
+            root_str.pop_back();
        const std::string full_str = boost::filesystem::weakly_canonical(root / rel_path).string();
        return full_str.compare(0, root_str.size(), root_str) == 0 &&
               (full_str.size() == root_str.size() || full_str[root_str.size()] == boost::filesystem::path::preferred_separator);
@@ -1112,6 +1119,37 @@ bool is_path_within_root(const std::string &rel_path, const boost::filesystem::p
    }
 }

+bool is_symlink_target_within_root(const std::string &link_rel_path, const std::string &target, const boost::filesystem::path &root)
+{
+    if (target.empty() || target.front() == '/' || target.front() == '\\' || (target.size() > 1 && target[1] == ':'))
+        return false;
+    // A relative target without ".." only descends from the link's directory, so no chain of such links can leave root.
+    const size_t sep = link_rel_path.find_last_of("/\\");
+    return is_path_within_root((sep == std::string::npos ? std::string() : link_rel_path.substr(0, sep + 1)) + target, root);
+}
+
+bool is_absolute_path_within_root(const boost::filesystem::path &path, const boost::filesystem::path &root)
+{
+    const boost::filesystem::path rel = path.lexically_relative(root);
+    return !rel.empty() && rel != "." && is_path_within_root(rel.string(), root);
+}
+
+bool is_safe_to_open_file_name(const std::string &file_name)
+{
+    // Formats that cannot carry macros or scripts. Legacy and OpenDocument office files, HTML and SVG are left out on purpose.
+    static const std::vector<std::string> safe_extensions = {
+        "jpg", "jpeg", "jfif", "pjpeg", "pjp", "png", "gif", "bmp", "webp", "tif", "tiff",
+        "pdf", "txt", "md", "csv", "docx", "xlsx", "pptx",
+        "stl", "obj", "3mf", "amf", "ply", "step", "stp", "iges", "igs", "dxf",
+        "mp4", "mov", "webm"};
+    // The name must end in the extension itself: Windows drops trailing dots and spaces and reads ':' as a stream separator.
+    const size_t dot = file_name.find_last_of('.');
+    if (dot == std::string::npos || file_name.find_first_of("/\\:") != std::string::npos)
+        return false;
+    const std::string extension = boost::algorithm::to_lower_copy(file_name.substr(dot + 1));
+    return std::find(safe_extensions.begin(), safe_extensions.end(), extension) != safe_extensions.end();
+}
+
 bool is_img_file(const std::string &path)
 {
 	return boost::iends_with(path, ".png") || boost::iends_with(path, ".svg");
@@ -1019,14 +1019,9 @@ if (UNIX AND NOT APPLE)
    find_package(GTK${SLIC3R_GTK} REQUIRED)
    pkg_check_modules(LIBSECRET REQUIRED libsecret-1)
    pkg_check_modules(webkit2gtk REQUIRED webkit2gtk-4.1)
-    if (FLATPAK)
-        # I don't know why this is needed, but for whatever reason slic3r isn't
-        # linking to X11 and webkit2gtk. force it.
    find_package(X11 REQUIRED)
-        target_link_libraries(libslic3r_gui ${X11_LIBRARIES} ${webkit2gtk_LIBRARIES})
-    endif()
    target_include_directories(libslic3r_gui SYSTEM PRIVATE ${GTK${SLIC3R_GTK}_INCLUDE_DIRS} ${LIBSECRET_INCLUDE_DIRS} ${webkit2gtk_INCLUDE_DIRS})
-    target_link_libraries(libslic3r_gui ${GTK${SLIC3R_GTK}_LIBRARIES} fontconfig ${LIBSECRET_LIBRARIES})
+    target_link_libraries(libslic3r_gui ${GTK${SLIC3R_GTK}_LIBRARIES} fontconfig ${LIBSECRET_LIBRARIES} ${webkit2gtk_LIBRARIES} ${X11_LIBRARIES})

    # Propagate GDK backend detection results as compile definitions so that
    # LinuxDisplayBackend.cpp can include the right GDK headers.
@@ -428,7 +428,7 @@ void AuFile::on_dclick(wxMouseEvent &evt)
    if (m_type == AddFileButton)
        return;
    else
-        wxLaunchDefaultApplication(m_file_path.wstring(), 0);
+        desktop_open_project_attachment(this, m_file_path);
 }

 void AuFile::on_mouse_left_up(wxMouseEvent &evt)
@@ -171,14 +171,16 @@ void ConfigManipulation::check_adaptive_pressure_advance_model(DynamicPrintConfi
        return;

    const auto* model = config->option<ConfigOptionStrings>("adaptive_pressure_advance_model");
-    if (model == nullptr || model->values.empty())
+    if (model == nullptr)
        return;

-    std::string raw_model;
-    for (const std::string& chunk : model->values)
-        raw_model += chunk;
-
-    std::string error = AdaptivePAProcessor::validate_adaptive_pa_model(raw_model);
+    // Each extruder variant holds its own model.
+    std::string error;
+    for (const std::string& variant_model : model->values) {
+        error = AdaptivePAProcessor::validate_adaptive_pa_model(variant_model);
+        if (!error.empty())
+            break;
+    }
    if (!error.empty()) {
        wxString msg_text = _L("Adaptive Pressure Advance model validation failed:\n");
        msg_text += from_u8(error);
@@ -14,6 +14,9 @@
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/any.hpp>

+#include <wx/filename.h>
+#include <wx/filesys.h>
+
 #if __APPLE__
 #import <IOKit/pwr_mgt/IOPMLib.h>
 #elif _WIN32
@@ -27,11 +30,13 @@

 #include "AboutDialog.hpp"
 #include "MsgDialog.hpp"
+#include "Plater.hpp"
 #include "format.hpp"

 #include "WebUserLoginDialog.hpp"

 #include "libslic3r/Print.hpp"
+#include "libslic3r/Utils.hpp"

 namespace Slic3r {

@@ -531,6 +536,11 @@ boost::filesystem::path into_path(const wxString &str)
 	return boost::filesystem::path(str.wx_str());
 }

+wxString file_url_from_path(const boost::filesystem::path &path)
+{
+	return wxFileSystem::FileNameToURL(wxFileName(from_path(path)));
+}
+
 void about()
 {
    AboutDialog dlg;
@@ -635,4 +645,26 @@ void desktop_open_any_folder( const std::string& path )
 }


+bool desktop_open_project_attachment(wxWindow *parent, const boost::filesystem::path &path)
+{
+    // The auxiliary path is UTF-8, which is what boost::filesystem reads a narrow string as.
+    const boost::filesystem::path aux_root(wxGetApp().plater()->model().get_auxiliary_file_temp_path());
+    boost::system::error_code ec;
+    if (!is_absolute_path_within_root(path, aux_root) || !boost::filesystem::is_regular_file(path, ec))
+        return false;
+
+    // Attachments come with the project and carry no download mark, so the desktop would open them without a warning.
+    if (!is_safe_to_open_file_name(path.filename().string())) {
+        MessageDialog dlg(parent,
+                          wxString::Format(_L("\"%s\" is not a plain document, image or model file. Opening it may run it as a "
+                                              "program or script on this computer.\n\n"
+                                              "Only open attachments from projects you trust. Open it anyway?"),
+                                           from_path(path.filename())),
+                          _L("Open attachment"), wxICON_WARNING | wxYES_NO);
+        if (dlg.ShowModal() != wxID_YES)
+            return false;
+    }
+    return wxLaunchDefaultApplication(from_path(path), 0);
+}
+
 } }
@@ -76,6 +76,9 @@ std::string	into_u8(const wxString &str);
 wxString	from_path(const boost::filesystem::path &path);
 // boost path from wxString
 boost::filesystem::path	into_path(const wxString &str);
+// file:// URL of a local path, percent-encoded so characters such as '#', '%' and '?' stay part of the path.
+// Append any query or fragment to the result.
+wxString	file_url_from_path(const boost::filesystem::path &path);

 // Display an About dialog
 extern void about();
@@ -83,6 +86,9 @@ extern void about();
 extern void desktop_open_datadir_folder();
 // Ask the destop to open one folder
 extern void desktop_open_any_folder(const std::string& path);
+// Ask the desktop to open a file from the project's auxiliary directory, after a confirmation
+// unless its type is known to be plain content. Returns false if the file was not opened.
+extern bool desktop_open_project_attachment(wxWindow *parent, const boost::filesystem::path &path);
 } // namespace GUI
 } // namespace Slic3r

@@ -1512,11 +1512,33 @@ int GUI_App::install_plugin(std::string name, std::string package_name, InstallP
                    size_t n = mz_zip_reader_get_extra(&archive, stat.m_file_index, extra.data(), extra.size());
                    dest_file = decode(extra.substr(0, n), stat.m_filename);
                }
+                if (!is_path_within_root(dest_file, plugin_folder)) {
+                    BOOST_LOG_TRIVIAL(error) << "[install_plugin] entry " << dest_file << " resolves outside " << plugin_folder.string();
+                    close_zip_reader(&archive);
+                    if (pro_fn) { pro_fn(InstallStatusUnzipFailed, 0, cancel); }
+                    return InstallStatusUnzipFailed;
+                }
                auto dest_path = plugin_folder / dest_file;
-                boost::filesystem::create_directories(dest_path.parent_path());
                std::string dest_zip_file = encode_path(dest_path.string().c_str());
+#ifndef WIN32
+                // Validate a symlink's target before anything at the destination is replaced.
+                const bool is_link = S_ISLNK(stat.m_external_attr >> 16);
+                std::string link;
+                if (is_link) {
+                    link.assign(stat.m_uncomp_size, 0);
+                    if (!mz_zip_reader_extract_to_mem(&archive, stat.m_file_index, link.data(), stat.m_uncomp_size, 0) ||
+                        !is_symlink_target_within_root(dest_file, link, plugin_folder)) {
+                        BOOST_LOG_TRIVIAL(error) << "[install_plugin] link " << dest_file << " -> " << link << " is unreadable or resolves outside " << plugin_folder.string();
+                        close_zip_reader(&archive);
+                        if (pro_fn) { pro_fn(InstallStatusUnzipFailed, 0, cancel); }
+                        return InstallStatusUnzipFailed;
+                    }
+                }
+#endif
                try {
-                    if (fs::exists(dest_path)) {
+                    boost::filesystem::create_directories(dest_path.parent_path());
+                    // symlink_status so that an existing symlink, dangling or not, is replaced rather than written through.
+                    if (fs::exists(fs::symlink_status(dest_path))) {
                        boost::system::error_code ec;
                        fs::remove(dest_path, ec);
                        if (ec) {
@@ -1544,9 +1566,8 @@ int GUI_App::install_plugin(std::string name, std::string package_name, InstallP
                    }
                    mz_bool res = 0;
 #ifndef WIN32
-                    if (S_ISLNK(stat.m_external_attr >> 16)) {
-                        std::string link(stat.m_uncomp_size + 1, 0);
-                        res = mz_zip_reader_extract_to_mem(&archive, stat.m_file_index, link.data(), stat.m_uncomp_size, 0);
+                    if (is_link) {
+                        res = 1;
                        try {
                            boost::filesystem::create_symlink(link, dest_path);
                        } catch (const std::exception &e) {
@@ -1997,6 +1997,126 @@ bool MainFrame::can_reslice() const
    return (m_plater != nullptr) && !m_plater->model().objects.empty();
 }

+namespace {
+// Orca: stable key persisted by the "remember last print action" preference. Reordering PrintSelectType
+// must not silently remap a saved preference, so the key never derives from the enum value.
+const char* print_select_type_key(MainFrame::PrintSelectType type)
+{
+    switch (type) {
+    case MainFrame::ePrintAll:            return "print_all";
+    case MainFrame::ePrintPlate:          return "print_plate";
+    case MainFrame::eExportSlicedFile:    return "export_sliced_file";
+    case MainFrame::eExportAllSlicedFile: return "export_all_sliced_file";
+    case MainFrame::eExportGcode:         return "export_gcode";
+    case MainFrame::eSendGcode:           return "send_gcode";
+    case MainFrame::eSendToPrinter:       return "send_to_printer";
+    case MainFrame::eSendToPrinterAll:    return "send_to_printer_all";
+    case MainFrame::ePrintMultiMachine:   return "print_multi_machine";
+    case MainFrame::eUploadGcode:         break; // Orca: no dropdown entry, never selectable
+    }
+    return "";
+}
+
+// Orca: single source for the print button and print dropdown labels
+wxString print_select_type_label(MainFrame::PrintSelectType type)
+{
+    switch (type) {
+    case MainFrame::ePrintAll:            return _L("Print all");
+    case MainFrame::ePrintPlate:          return _L("Print plate");
+    case MainFrame::eExportSlicedFile:    return _L("Export plate sliced file");
+    case MainFrame::eExportAllSlicedFile: return _L("Export all sliced file");
+    case MainFrame::eExportGcode:         return _L("Export G-code file");
+    case MainFrame::eSendGcode:           return _L_CONTEXT("Print", "Verb");
+    case MainFrame::eSendToPrinter:       return _L("Send");
+    case MainFrame::eSendToPrinterAll:    return _L("Send all");
+    case MainFrame::ePrintMultiMachine:   return _L("Send to Multi-device");
+    case MainFrame::eUploadGcode:         break; // Orca: no dropdown entry, never selectable
+    }
+    return _L("Print plate");
+}
+} // namespace
+
+std::vector<MainFrame::PrintSelectType> MainFrame::available_print_actions() const
+{
+    std::vector<PrintSelectType> actions;
+    const auto preset_bundle      = wxGetApp().preset_bundle;
+    const bool use_printer_agents = wxGetApp().app_config->get_bool("use_printer_agents");
+
+    if (preset_bundle && !preset_bundle->is_bbl_vendor() && !use_printer_agents) {
+        // ThirdParty actions
+        actions.push_back(eSendGcode);
+        // Orca: when the printer accepts a .gcode.3mf (the "Support 3MF as gcode" option),
+        // also offer exporting the sliced .gcode.3mf bundle
+        const auto* use_3mf_opt = preset_bundle->printers.get_edited_preset().config.option<ConfigOptionBool>("use_3mf");
+        if (use_3mf_opt != nullptr && use_3mf_opt->value)
+            actions.push_back(eExportSlicedFile);
+        actions.push_back(eExportGcode);
+        return actions;
+    }
+
+    // Orca Slicer actions
+    bool support_send      = true;
+    bool support_print_all = true;
+    if (preset_bundle && !preset_bundle->use_bbl_network() && !use_printer_agents) {
+        support_send = false; // All 3rd print hosts do not have the send options
+
+        const auto& cfg           = preset_bundle->printers.get_edited_preset().config;
+        const auto* host_type_opt = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type");
+        // Only simply print support uploading all plates
+        support_print_all = host_type_opt != nullptr && host_type_opt->value == PrintHostType::htSimplyPrint;
+    }
+
+    actions.push_back(ePrintPlate);
+    if (support_print_all)
+        actions.push_back(ePrintAll);
+    if (support_send) {
+        actions.push_back(eSendToPrinter);
+        actions.push_back(eSendToPrinterAll);
+    }
+    if (enable_multi_machine)
+        actions.push_back(ePrintMultiMachine);
+    actions.push_back(eExportSlicedFile);
+    actions.push_back(eExportAllSlicedFile);
+    actions.push_back(eExportGcode);
+    return actions;
+}
+
+void MainFrame::select_print_action(PrintSelectType select_type)
+{
+    m_print_btn->SetLabel(print_select_type_label(select_type));
+    m_print_select = select_type;
+    remember_print_select(select_type);
+    m_print_enable = get_enable_print_status();
+    m_print_btn->Enable(m_print_enable);
+    this->Layout();
+    fit_tab_labels(); // ORCA on label change
+}
+
+void MainFrame::remember_print_select(PrintSelectType select_type)
+{
+    if (!wxGetApp().app_config->get_bool("remember_print_action"))
+        return;
+    // AppConfig is marked dirty here and flushed by the regular autosave
+    wxGetApp().app_config->set("last_print_action", print_select_type_key(select_type));
+}
+
+bool MainFrame::get_remembered_print_select(PrintSelectType& out) const
+{
+    if (!wxGetApp().app_config->get_bool("remember_print_action"))
+        return false;
+    const std::string saved = wxGetApp().app_config->get("last_print_action");
+    if (saved.empty())
+        return false;
+    // Orca: only restore an action the current printer actually offers in the dropdown
+    for (PrintSelectType type : available_print_actions()) {
+        if (saved == print_select_type_key(type)) {
+            out = type;
+            return true;
+        }
+    }
+    return false;
+}
+
 wxBoxSizer* MainFrame::create_side_tools()
 {
    enable_multi_machine = wxGetApp().is_enable_multi_machine();
@@ -2016,6 +2136,14 @@ wxBoxSizer* MainFrame::create_side_tools()
    m_print_btn = new SideButton(print_panel, _L("Print plate"), "");
    m_print_option_btn = new SideButton(print_panel, "", "sidebutton_dropdown", 0, 14);

+    // Orca: restore the last used print/export action if the user opted to remember it
+    PrintSelectType remembered_print_select;
+    if (get_remembered_print_select(remembered_print_select)) {
+        m_print_select = remembered_print_select;
+        m_print_btn->SetLabel(print_select_type_label(remembered_print_select));
+        fit_tab_labels(); // ORCA on label change
+    }
+
    auto slice_sizer = new wxBoxSizer(wxHORIZONTAL);
    slice_sizer->Add(m_slice_option_btn, 0, wxRIGHT | wxALIGN_CENTER_VERTICAL, FromDIP(1));
    slice_sizer->Add(m_slice_btn, 0, wxLEFT | wxALIGN_CENTER_VERTICAL, FromDIP(1));
@@ -2178,193 +2306,15 @@ wxBoxSizer* MainFrame::create_side_tools()
    m_print_option_btn->Bind(wxEVT_BUTTON, [this](wxCommandEvent& event)
        {
            SidePopup* p = new SidePopup(this);
-
-            if (wxGetApp().preset_bundle
-                && !wxGetApp().preset_bundle->is_bbl_vendor()
-                && !wxGetApp().app_config->get_bool("use_printer_agents")) {
-                // ThirdParty Buttons
-                SideButton* export_gcode_btn = new SideButton(p, _L("Export G-code file"), "");
-                export_gcode_btn->SetCornerRadius(0);
-                export_gcode_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Export G-code file"));
-                    m_print_select = eExportGcode;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
+            for (PrintSelectType type : available_print_actions()) {
+                SideButton* btn = new SideButton(p, print_select_type_label(type), "");
+                btn->SetCornerRadius(0);
+                btn->Bind(wxEVT_BUTTON, [this, p, type](wxCommandEvent&) {
+                    select_print_action(type);
                    p->Dismiss();
                    });
-
-                // upload and print
-                SideButton* send_gcode_btn = new SideButton(p, _L_CONTEXT("Print", "Verb"), "");
-                send_gcode_btn->SetCornerRadius(0);
-                send_gcode_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L_CONTEXT("Print", "Verb"));
-                    m_print_select = eSendGcode;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                p->append_button(send_gcode_btn);
-
-                // Orca: when the printer accepts a .gcode.3mf (the "Support 3MF as gcode" option),
-                // also offer exporting the sliced .gcode.3mf bundle
-                const auto& printer_config = wxGetApp().preset_bundle->printers.get_edited_preset().config;
-                const auto* use_3mf_opt    = printer_config.option<ConfigOptionBool>("use_3mf");
-                if (use_3mf_opt != nullptr && use_3mf_opt->value) {
-                    SideButton* export_sliced_file_btn = new SideButton(p, _L("Export plate sliced file"), "");
-                    export_sliced_file_btn->SetCornerRadius(0);
-                    export_sliced_file_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                        m_print_btn->SetLabel(_L("Export plate sliced file"));
-                        m_print_select = eExportSlicedFile;
-                        m_print_enable = get_enable_print_status();
-                        m_print_btn->Enable(m_print_enable);
-                        this->Layout();
-                        fit_tab_labels(); // ORCA on label change
-                        p->Dismiss();
-                        });
-                    p->append_button(export_sliced_file_btn);
+                p->append_button(btn);
            }
-
-                p->append_button(export_gcode_btn);
-            }
-            else {
-                //Orca Slicer Buttons
-                SideButton* print_plate_btn = new SideButton(p, _L("Print plate"), "");
-                print_plate_btn->SetCornerRadius(0);
-
-                SideButton* send_to_printer_btn = new SideButton(p, _L("Send"), "");
-                send_to_printer_btn->SetCornerRadius(0);
-
-                SideButton* export_sliced_file_btn = new SideButton(p, _L("Export plate sliced file"), "");
-                export_sliced_file_btn->SetCornerRadius(0);
-
-                SideButton* export_all_sliced_file_btn = new SideButton(p, _L("Export all sliced file"), "");
-                export_all_sliced_file_btn->SetCornerRadius(0);
-
-                print_plate_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Print plate"));
-                    m_print_select = ePrintPlate;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                SideButton* print_all_btn = new SideButton(p, _L("Print all"), "");
-                print_all_btn->SetCornerRadius(0);
-                print_all_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Print all"));
-                    m_print_select = ePrintAll;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                send_to_printer_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Send"));
-                    m_print_select = eSendToPrinter;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                SideButton* send_to_printer_all_btn = new SideButton(p, _L("Send all"), "");
-                send_to_printer_all_btn->SetCornerRadius(0);
-                send_to_printer_all_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Send all"));
-                    m_print_select = eSendToPrinterAll;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                export_sliced_file_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Export plate sliced file"));
-                    m_print_select = eExportSlicedFile;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                export_all_sliced_file_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Export all sliced file"));
-                    m_print_select = eExportAllSlicedFile;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                    });
-
-                bool support_send = true;
-                bool support_print_all = true;
-
-                const auto preset_bundle = wxGetApp().preset_bundle;
-                if (preset_bundle) {
-                    if (preset_bundle->use_bbl_network() || wxGetApp().app_config->get_bool("use_printer_agents")) {
-                        // BBL network support everything
-                    } else {
-                        support_send = false; // All 3rd print hosts do not have the send options
-
-                        auto cfg = preset_bundle->printers.get_edited_preset().config;
-                        const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
-
-                        // Only simply print support uploading all plates
-                        support_print_all = host_type == PrintHostType::htSimplyPrint;
-                    }
-                }
-
-                p->append_button(print_plate_btn);
-                if (support_print_all) {
-                    p->append_button(print_all_btn);
-                }
-                if (support_send) {
-                    p->append_button(send_to_printer_btn);
-                    p->append_button(send_to_printer_all_btn);
-                }
-                if (enable_multi_machine) {
-                    SideButton* print_multi_machine_btn = new SideButton(p, _L("Send to Multi-device"), "");
-                    print_multi_machine_btn->SetCornerRadius(0);
-                    print_multi_machine_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                        m_print_btn->SetLabel(_L("Send to Multi-device"));
-                        m_print_select = ePrintMultiMachine;
-                        m_print_enable = get_enable_print_status();
-                        m_print_btn->Enable(m_print_enable);
-                        this->Layout();
-                        fit_tab_labels(); // ORCA on label change
-                        p->Dismiss();
-                    });
-                    p->append_button(print_multi_machine_btn);
-                }
-                p->append_button(export_sliced_file_btn);
-                p->append_button(export_all_sliced_file_btn);
-                SideButton* export_gcode_btn = new SideButton(p, _L("Export G-code file"), "");
-                export_gcode_btn->SetCornerRadius(0);
-                export_gcode_btn->Bind(wxEVT_BUTTON, [this, p](wxCommandEvent&) {
-                    m_print_btn->SetLabel(_L("Export G-code file"));
-                    m_print_select = eExportGcode;
-                    m_print_enable = get_enable_print_status();
-                    m_print_btn->Enable(m_print_enable);
-                    this->Layout();
-                    fit_tab_labels(); // ORCA on label change
-                    p->Dismiss();
-                });
-                p->append_button(export_gcode_btn);
-            }
-
            p->Popup(m_print_btn);
        }
    );
@@ -4224,38 +4174,22 @@ void MainFrame::on_config_changed(DynamicPrintConfig* config) const

 void MainFrame::set_print_button_to_default(PrintSelectType select_type)
 {
-    if (select_type == PrintSelectType::ePrintPlate) {
-        m_print_btn->SetLabel(_L("Print plate"));
-        m_print_select = ePrintPlate;
+    // Orca: keep the user's remembered print/export action instead of resetting it to the computed
+    // default. get_remembered_print_select() already rejects anything this printer does not offer.
+    PrintSelectType remembered;
+    if (get_remembered_print_select(remembered))
+        select_type = remembered;
+
+    if (select_type == eUploadGcode)
+        return; // unsupported: no dropdown entry exists for this action
+
+    m_print_btn->SetLabel(print_select_type_label(select_type));
+    m_print_select = select_type;
+    // get_enable_print_status() already applies can_send_gcode() to the actions that need it
    if (m_print_enable)
        m_print_enable = get_enable_print_status();
    m_print_btn->Enable(m_print_enable);
    this->Layout();
-    } else if (select_type == PrintSelectType::eSendGcode) {
-        m_print_btn->SetLabel(_L_CONTEXT("Print", "Verb"));
-        m_print_select = eSendGcode;
-        if (m_print_enable)
-            m_print_enable = get_enable_print_status() && can_send_gcode();
-        m_print_btn->Enable(m_print_enable);
-        this->Layout();
-    } else if (select_type == PrintSelectType::eExportGcode) {
-        m_print_btn->SetLabel(_L("Export G-code file"));
-        m_print_select = eExportGcode;
-        if (m_print_enable)
-            m_print_enable = get_enable_print_status() && can_send_gcode();
-        m_print_btn->Enable(m_print_enable);
-        this->Layout();
-    } else if (select_type == PrintSelectType::eExportSlicedFile) {
-        m_print_btn->SetLabel(_L("Export plate sliced file"));
-        m_print_select = eExportSlicedFile;
-        if (m_print_enable)
-            m_print_enable = get_enable_print_status();
-        m_print_btn->Enable(m_print_enable);
-        this->Layout();
-    } else {
-        // unsupport
-        return;
-    }
 }

 void MainFrame::add_to_recent_projects(const wxString& filename)
@@ -13,6 +13,7 @@

 #include <string>
 #include <map>
+#include <vector>

 #include "GUI_Utils.hpp"
 #include "Event.hpp"
@@ -430,6 +431,14 @@ public:
    // Propagate changed configuration from the Tab to the Plater and save changes to the AppConfig
    void        on_config_changed(DynamicPrintConfig* cfg) const ;
    void        set_print_button_to_default(PrintSelectType select_type);
+    // Orca: the print/export actions the current printer offers, in the order the dropdown lists them.
+    // The dropdown is built from this, and a remembered action is only restored if it appears here.
+    std::vector<PrintSelectType> available_print_actions() const;
+    // Orca: apply an action picked from the print dropdown to the print button
+    void        select_print_action(PrintSelectType select_type);
+    // Orca: remember the user's preferred print/export action across sessions (see "remember_print_action" preference)
+    void        remember_print_select(PrintSelectType select_type);
+    bool        get_remembered_print_select(PrintSelectType& out) const;

    bool can_save() const;
    bool can_save_as() const;
@@ -98,10 +98,7 @@ void MarkdownTip::LoadStyle()
        ph /= "tooltip/styled.html";
        _data_dir = false;
    }
-    auto url = ph.string();
-    std::replace(url.begin(), url.end(), '\\', '/');
-    url = "file:///" + url;
-    _tipView->LoadURL(from_u8(url));
+    _tipView->LoadURL(file_url_from_path(ph));
    _lastTip.clear();
 }

@@ -286,6 +286,30 @@ static void set_config_values(DynamicPrintConfig *config, const std::string &key
    }
 }

+// Orca: a calibration print sets pressure advance explicitly to 0 on each extruder variant that
+// has it disabled, so the value stored in the printer does not skew the result. Variants with
+// pressure advance enabled keep their own value.
+static void zero_pressure_advance_where_disabled(DynamicPrintConfig *filament_config)
+{
+    auto enable_pa   = filament_config->option<ConfigOptionBools>("enable_pressure_advance");
+    auto pa          = filament_config->option<ConfigOptionFloats>("pressure_advance");
+    auto adaptive_pa = filament_config->option<ConfigOptionBools>("adaptive_pressure_advance");
+    if (!enable_pa || !pa || !adaptive_pa || pa->empty() || adaptive_pa->empty())
+        return;
+    // All variant keys share the variant count; widen a short one rather than index past it.
+    if (pa->size() < enable_pa->size())
+        pa->resize(enable_pa->size());
+    if (adaptive_pa->size() < enable_pa->size())
+        adaptive_pa->resize(enable_pa->size());
+    for (size_t variant = 0; variant < enable_pa->size(); ++variant) {
+        if (enable_pa->get_at(variant))
+            continue;
+        enable_pa->values[variant]   = true;
+        pa->values[variant]          = 0.0;
+        adaptive_pa->values[variant] = false;
+    }
+}
+
 bool Plater::has_illegal_filename_characters(const wxString& wxs_name)
 {
    std::string name = into_u8(wxs_name);
@@ -3672,7 +3696,7 @@ void Sidebar::update_all_preset_comboboxes()
        wxString url = from_u8(PrintHost::get_print_host_webui(&cfg));
        wxString apikey;
        if(url.empty())
-            url = wxString::Format("file://%s/web/orca/missing_connection.html", from_u8(resources_dir()));
+            url = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/orca/missing_connection.html");
        else {
            const auto host_type = cfg.option<ConfigOptionEnum<PrintHostType>>("host_type")->value;
            if (cfg.has("printhost_apikey") && (host_type != htSimplyPrint))
@@ -17064,11 +17088,7 @@ void Plater::calib_input_shaping_freq(const Calib_Params& params)
        set_config_values<double, ConfigOptionFloatsNullable>(print_config, "default_jerk", 0);
    }

-    if (!filament_config->option<ConfigOptionBools>("enable_pressure_advance")->get_at(0)) {
-        set_config_values<bool, ConfigOptionBools>(filament_config, "enable_pressure_advance", true);
-        set_config_values<double, ConfigOptionFloatsNullable>(filament_config, "pressure_advance", 0.0);
-        set_config_values<bool, ConfigOptionBools>(filament_config, "adaptive_pressure_advance", false);
-    }
+    zero_pressure_advance_where_disabled(filament_config);

    printer_config->set_key_value("resonance_avoidance", new ConfigOptionBool{false});
    printer_config->set_key_value("input_shaping_emit", new ConfigOptionBool{false});
@@ -17130,11 +17150,7 @@ void Plater::calib_input_shaping_damp(const Calib_Params& params)
        set_config_values<double, ConfigOptionFloatsNullable>(print_config, "default_jerk", 0);
    }

-    if (!filament_config->option<ConfigOptionBools>("enable_pressure_advance")->get_at(0)) {
-        set_config_values<bool, ConfigOptionBools>(filament_config, "enable_pressure_advance", true);
-        set_config_values<double, ConfigOptionFloatsNullable>(filament_config, "pressure_advance", 0.0);
-        set_config_values<bool, ConfigOptionBools>(filament_config, "adaptive_pressure_advance", false);
-    }
+    zero_pressure_advance_where_disabled(filament_config);

    printer_config->set_key_value("resonance_avoidance", new ConfigOptionBool{false});
    printer_config->set_key_value("input_shaping_emit", new ConfigOptionBool{false});
@@ -17196,11 +17212,7 @@ void Plater::Calib_Cornering(const Calib_Params& params)
        set_config_values<double, ConfigOptionFloatsNullable>(print_config, "default_jerk", 0);
    }

-    if (!filament_config->option<ConfigOptionBools>("enable_pressure_advance")->get_at(0)) {
-        set_config_values<bool, ConfigOptionBools>(filament_config, "enable_pressure_advance", true);
-        set_config_values<double, ConfigOptionFloatsNullable>(filament_config, "pressure_advance", 0.0);
-        set_config_values<bool, ConfigOptionBools>(filament_config, "adaptive_pressure_advance", false);
-    }
+    zero_pressure_advance_where_disabled(filament_config);

    printer_config->set_key_value("resonance_avoidance", new ConfigOptionBool{false});
    printer_config->set_key_value("input_shaping_emit", new ConfigOptionBool{true});
@@ -1831,6 +1831,9 @@ void PreferencesDialog::create_items()
    auto item_mix_print_high_low_temperature = create_item_checkbox(_L("Remove mixed temperature restriction"), _L("With this option enabled, you can print materials with a large temperature difference together."), "enable_high_low_temp_mixed_printing");
    g_sizer->Add(item_mix_print_high_low_temperature);

+    auto item_remember_print_action = create_item_checkbox(_L("Remember last print action"), _L("If enabled, OrcaSlicer will remember the last selected option in the print button's dropdown (e.g. Print, Export plate sliced file, Export G-code file) and use it as the default on next startup."), "remember_print_action");
+    g_sizer->Add(item_remember_print_action);
+
    //// CONTROL > Camera
    g_sizer->Add(create_item_title(_L("Camera")), 1, wxEXPAND);

@@ -57,9 +57,7 @@ PrivacyUpdateDialog::PrivacyUpdateDialog(wxWindow* parent, wxWindowID id, const

    fs::path ph(resources_dir());
    ph /= "tooltip/privacyupdate.html";
-    m_host_url = ph.string();
-    std::replace(m_host_url.begin(), m_host_url.end(), '\\', '/');
-    m_host_url = "file:///" + m_host_url;
+    m_host_url = into_u8(file_url_from_path(ph));
    m_vebview_release_note->LoadURL(from_u8(m_host_url));
    m_sizer_right->Add(m_vebview_release_note, 0, wxEXPAND | wxRIGHT | wxLEFT, FromDIP(15));

@@ -45,10 +45,10 @@ const std::vector<std::string> license_list = {
 ProjectPanel::ProjectPanel(wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size, long style) : wxPanel(parent, id, pos, size, style)
 {
    SetBackgroundColour(*wxWHITE);
-    m_project_home_url = wxString::Format("file://%s/web/model/index.html", from_u8(resources_dir()));
+    m_project_home_url = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/model/index.html");
    wxString strlang = wxGetApp().current_language_code_safe();
    if (strlang != "")
-        m_project_home_url = wxString::Format("file://%s/web/model/index.html?lang=%s", from_u8(resources_dir()), strlang);
+        m_project_home_url += "?lang=" + strlang;

    wxBoxSizer* main_sizer = new wxBoxSizer(wxVERTICAL);

@@ -293,10 +293,8 @@ void ProjectPanel::OnScriptMessage(wxWebViewEvent& evt)
            if (!accessory_path.empty()) {
                std::string decode_path = wxGetApp().url_decode(accessory_path.ToStdString());
                fs::path path(decode_path);
-
-                if (fs::exists(path)) {
-                    wxLaunchDefaultApplication(path.wstring(), 0);
-                }
+                if (!desktop_open_project_attachment(this, path))
+                    BOOST_LOG_TRIVIAL(warning) << "open_3mf_accessory: not opening " << decode_path;
            }
        }
        else if (strCmd == "request_3mf_info") {
@@ -510,7 +510,7 @@ void UpdateVersionDialog::update_version_info(wxString release_note, wxString ve
        out_buf->append(text, size);
    }, (void*) &html_source, MD_DIALECT_GITHUB | MD_FLAG_STRIKETHROUGH | MD_FLAG_WIKILINKS, 0);
    html_source.append("</body></html>");
-    m_vebview_release_note->LoadURL("file://" + (boost::filesystem::path (resources_dir()) / "web/guide/0/index.html").string());
+    m_vebview_release_note->LoadURL(file_url_from_path(boost::filesystem::path(resources_dir()) / "web/guide/0/index.html"));

    SetMinSize(GetSize());
    SetMaxSize(GetSize());
@@ -4415,15 +4415,15 @@ void TabFilament::build()
        optgroup->append_single_option_line("pellet_flow_coefficient", "printer_basic_information_advanced#pellet-modded-printer");
        optgroup->append_single_option_line("filament_flow_ratio", "material_flow_ratio_and_pressure_advance#flow-ratio", 0);

-        optgroup->append_single_option_line("enable_pressure_advance", "material_flow_ratio_and_pressure_advance#pressure-advance");
-        optgroup->append_single_option_line("pressure_advance", "material_flow_ratio_and_pressure_advance#pressure-advance");
+        optgroup->append_single_option_line("enable_pressure_advance", "material_flow_ratio_and_pressure_advance#pressure-advance", 0);
+        optgroup->append_single_option_line("pressure_advance", "material_flow_ratio_and_pressure_advance#pressure-advance", 0);

        // Orca: adaptive pressure advance and calibration model
-        optgroup->append_single_option_line("adaptive_pressure_advance", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-beta");
-        optgroup->append_single_option_line("adaptive_pressure_advance_overhangs", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-for-overhangs-beta");
-        optgroup->append_single_option_line("adaptive_pressure_advance_bridges", "material_flow_ratio_and_pressure_advance#pressure-advance-for-bridges");
+        optgroup->append_single_option_line("adaptive_pressure_advance", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-beta", 0);
+        optgroup->append_single_option_line("adaptive_pressure_advance_overhangs", "material_flow_ratio_and_pressure_advance#enable-adaptive-pressure-advance-for-overhangs-beta", 0);
+        optgroup->append_single_option_line("adaptive_pressure_advance_bridges", "material_flow_ratio_and_pressure_advance#pressure-advance-for-bridges", 0);

-        Option option = optgroup->get_option("adaptive_pressure_advance_model");
+        Option option = optgroup->get_option("adaptive_pressure_advance_model", 0);
        option.opt.full_width = true;
        option.opt.is_code = true;
        option.opt.height = 15;
@@ -4432,7 +4432,7 @@ void TabFilament::build()
            DynamicPrintConfig& filament_config = m_preset_bundle->filaments.get_edited_preset().config;

            update_dirty();
-            if (opt_key == "adaptive_pressure_advance_model")
+            if (opt_key.substr(0, opt_key.find('#')) == "adaptive_pressure_advance_model")
                m_config_manipulation.check_adaptive_pressure_advance_model(&filament_config);

            on_value_change(opt_key, value);
@@ -4829,8 +4829,11 @@ void TabFilament::toggle_options()
    }
    if (m_active_page->title() == L("Filament"))
    {
-        bool pa = m_config->opt_bool("enable_pressure_advance", 0);
-        toggle_option("pressure_advance", pa);
+        const int selection = m_variant_combo ? m_variant_combo->GetSelection() : 0;
+        const unsigned int variant_idx = (unsigned int) std::max(selection, 0);
+
+        bool pa = m_config->opt_bool("enable_pressure_advance", variant_idx);
+        toggle_option("pressure_advance", pa, 0);

        //Orca: Enable the plates that should be visible when multi bed support is enabled or a BBL printer is selected; otherwise, enable only the plate visible for the selected bed type.
        DynamicConfig& proj_cfg               = m_preset_bundle->project_config;
@@ -4858,12 +4861,12 @@ void TabFilament::toggle_options()
        // Orca: adaptive pressure advance and calibration model
        // If PA is not enabled, disable adaptive pressure advance and hide the model section
        // If adaptive PA is not enabled, hide the adaptive PA model section
-        toggle_option("adaptive_pressure_advance", pa);
-        toggle_option("adaptive_pressure_advance_overhangs", pa);
-        bool has_adaptive_pa = m_config->opt_bool("adaptive_pressure_advance", 0);
-        toggle_line("adaptive_pressure_advance_overhangs", has_adaptive_pa && pa);
-        toggle_line("adaptive_pressure_advance_model", has_adaptive_pa && pa);
-        toggle_line("adaptive_pressure_advance_bridges", has_adaptive_pa && pa);
+        toggle_option("adaptive_pressure_advance", pa, 0);
+        toggle_option("adaptive_pressure_advance_overhangs", pa, 0);
+        bool has_adaptive_pa = m_config->opt_bool("adaptive_pressure_advance", variant_idx);
+        toggle_line("adaptive_pressure_advance_overhangs", has_adaptive_pa && pa, 0);
+        toggle_line("adaptive_pressure_advance_model", has_adaptive_pa && pa, 0);
+        toggle_line("adaptive_pressure_advance_bridges", has_adaptive_pa && pa, 0);

        bool is_pellet_printer = printer_cfg.opt_bool("pellet_modded_printer");
        toggle_line("pellet_flow_coefficient", is_pellet_printer);
@@ -4871,8 +4874,6 @@ void TabFilament::toggle_options()

        toggle_line("activate_chamber_temp_control", printer_cfg.opt_bool("support_chamber_temp_control"));

-        const int selection = m_variant_combo ? m_variant_combo->GetSelection() : 0;
-        const unsigned int variant_idx = (unsigned int) std::max(selection, 0);
        std::string volumetric_speed_cos = m_config->opt_string("volumetric_speed_coefficients", variant_idx);
        bool enable_fit = volumetric_speed_cos != "0 0 0 0 0 0";
        toggle_option("filament_adaptive_volumetric_speed", enable_fit, 256 + variant_idx);
@@ -5205,7 +5206,6 @@ void TabPrinter::build_fff()
        optgroup->append_single_option_line("adaptive_bed_mesh_margin", "printer_basic_information_adaptive_bed_mesh#mesh-margin");

        optgroup = page->new_optgroup(L("Accessory"), "param_accessory");
-        optgroup->append_single_option_line("nozzle_type", "printer_basic_information_accessory#nozzle-type", 0);
        optgroup->append_single_option_line("nozzle_hrc", "printer_basic_information_accessory#nozzle-hrc");
        optgroup->append_single_option_line("auxiliary_fan", "printer_basic_information_accessory#auxiliary-part-cooling-fan");
        optgroup->append_single_option_line("fan_direction");
@@ -5720,6 +5720,7 @@ if (is_marlin_flavor)

        auto optgroup = page->new_optgroup(L("Basic information"), L"param_information", -1, true);
            optgroup->append_single_option_line("nozzle_diameter", "printer_extruder_basic_information#nozzle-diameter", extruder_idx);
+            optgroup->append_single_option_line("nozzle_type", "printer_basic_information_accessory#nozzle-type", extruder_idx);
            //optgroup->append_single_option_line("nozzle_volume_type", "", extruder_idx);

            optgroup->append_single_option_line("nozzle_volume", "printer_extruder_basic_information#nozzle-volume", extruder_idx);
@@ -5731,7 +5732,7 @@ if (is_marlin_flavor)
            optgroup->m_on_change = [this, extruder_idx](const t_config_option_key& opt_key, boost::any value)
            {
                bool is_SEMM = m_config->opt_bool("single_extruder_multi_material");
-                if (is_SEMM && m_extruders_count > 1 && opt_key.find_first_of("nozzle_diameter") != std::string::npos)
+                if (is_SEMM && m_extruders_count > 1 && boost::starts_with(opt_key, "nozzle_diameter"))
                {
                    SuppressBackgroundProcessingUpdate sbpu;
                    const double new_nd = boost::any_cast<double>(value);
@@ -31,14 +31,15 @@ int UserManager::parse_json(std::string payload)
 {
    bool restored_json = false;
    json j;
+
+    //bind/unbind
+
+    try {
        json j_pre = json::parse(payload);
        if (j_pre.empty()) {
            return -1;
        }

-    //bind/unbind
-
-    try {
        if (j_pre.contains("bind")) {
            if (j_pre["bind"].contains("command")) {

@@ -38,9 +38,7 @@ DownPluginFrame::DownPluginFrame(GUI_App *pGUI) : wxDialog((wxWindow *) (pGUI->m

    // set the frame icon
    wxBoxSizer *topsizer = new wxBoxSizer(wxVERTICAL);
-    wxString TargetUrl    = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/6/index.html").make_preferred().string());
-
-    TargetUrl = "file://" + TargetUrl;
+    wxString TargetUrl    = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/guide/6/index.html");

    // Create the webview
    m_browser = WebView::CreateWebView(this, TargetUrl);
@@ -218,37 +218,38 @@ wxString GuideFrame::SetStartPage(GuidePage startpage, bool load)
    m_page = startpage;
    BOOST_LOG_TRIVIAL(info) << __FUNCTION__<< boost::format(" enter, load=%1%, start_page=%2%")%load%int(startpage);
    //wxLogMessage("GUIDE: webpage_1  %s", (boost::filesystem::path(resources_dir()) / "web\\guide\\1\\index.html").make_preferred().string().c_str() );
-    wxString TargetUrl = from_u8( (boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=1").make_preferred().string() );
+    const wxString guide_url = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/guide/0/index.html");
+    wxString TargetUrl = guide_url + "?target=1";
    //wxLogMessage("GUIDE: webpage_2  %s", TargetUrl.mb_str());

    if (startpage == BBL_WELCOME){
        SetTitle(_L("Setup Wizard"));
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=1").make_preferred().string());
+        TargetUrl = guide_url + "?target=1";
    } else if (startpage == BBL_REGION) {
        SetTitle(_L("Setup Wizard"));
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=11").make_preferred().string());
+        TargetUrl = guide_url + "?target=11";
    } else if (startpage == BBL_MODELS) {
        SetTitle(_L("Setup Wizard"));
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=21").make_preferred().string());
+        TargetUrl = guide_url + "?target=21";
    } else if (startpage == BBL_FILAMENTS) {
        SetTitle(_L("Setup Wizard"));

        int nSize = m_ProfileJson["model"].size();

        if (nSize>0)
-            TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=22").make_preferred().string());
+            TargetUrl = guide_url + "?target=22";
        else
-            TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=21").make_preferred().string());
+            TargetUrl = guide_url + "?target=21";
    } else if (startpage == BBL_FILAMENT_ONLY) {
        SetTitle("");
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=23").make_preferred().string());
+        TargetUrl = guide_url + "?target=23";
    } else if (startpage == BBL_MODELS_ONLY) {
        SetTitle("");
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=24").make_preferred().string());
+        TargetUrl = guide_url + "?target=24";
    }
    else {
        SetTitle(_L("Setup Wizard"));
-        TargetUrl = from_u8((boost::filesystem::path(resources_dir()) / "web/guide/0/index.html?target=21").make_preferred().string());
+        TargetUrl = guide_url + "?target=21";
    }

    wxString strlang = wxGetApp().current_language_code_safe();
@@ -256,7 +257,6 @@ wxString GuideFrame::SetStartPage(GuidePage startpage, bool load)
    if (strlang != "")
        TargetUrl = wxString::Format("%s&lang=%s", w2s(TargetUrl), strlang);

-    TargetUrl = "file://" + TargetUrl;
    if (load)
        load_url(TargetUrl);

@@ -1284,7 +1284,7 @@ bool GuideFrame::BuildProfileJson(const PresetBundle& bundle, bool require_all_r
                entry["vendor"]          = vp.id;
                entry["nozzle_diameter"] = nozzle_str;
                entry["materials"]       = materials_str;
-                entry["cover"]           = cover_path.string();
+                entry["cover"]           = into_u8(file_url_from_path(cover_path));
                entry["nozzle_selected"] = "";
                entry["sub_path"]        = "";
                m_ProfileJson["model"].push_back(entry);
@@ -1405,23 +1405,26 @@ bool GuideFrame::BuildProfileDataFromVendors()
        // is served from the shipped profiles. Each is stamped by name and
        // version alone: a profile change requires a version bump, so those two
        // determine content wherever the vendor's copy sits.
-        struct VendorSource { std::string name; boost::filesystem::path dir; std::string version; };
-        std::vector<VendorSource> ordered;
-        auto add_vendor = [&ordered](const std::string& name, const boost::filesystem::path& dir) {
+        std::vector<PresetBundle::VendorSource> ordered;
+        json stamps = json::array();
+        auto add_vendor = [&ordered, &stamps](const std::string& name, const boost::filesystem::path& dir) {
            // The version a load from `dir` would serve: the profile's where one
            // exists (a cache is only served while it covers the profile beside
            // it), the cache's own stamp where the cache is the whole vendor.
            // A profile without a version (blacklist.json) carries no presets
            // and is passed over.
            const boost::filesystem::path profile = dir / (name + ".json");
+            std::string version;
            if (boost::filesystem::exists(profile)) {
                const Semver v = get_version_from_json(profile.string());
-                if (v.valid())
-                    ordered.push_back({name, dir, v.to_string()});
+                if (! v.valid())
+                    return;
+                version = v.to_string();
            } else {
-                ordered.push_back({name, dir,
-                    VendorCacheFile::peek_version((dir / (name + ".opc")).string(), name)});
+                version = VendorCacheFile::peek_version((dir / (name + ".opc")).string(), name);
            }
+            ordered.push_back({name, dir});
+            stamps.push_back({name, version});
        };
        const std::string filament_library(PresetBundle::ORCA_FILAMENT_LIBRARY);
        if (auto it = vendor_sources.find(filament_library); it != vendor_sources.end())
@@ -1431,9 +1434,6 @@ bool GuideFrame::BuildProfileDataFromVendors()
                add_vendor(name, dir);
        if (ordered.empty())
            return false;
-        json stamps = json::array();
-        for (const VendorSource& v : ordered)
-            stamps.push_back({v.name, v.version});

        // What this function derives is a pure function of that stamped set, so
        // the derived JSON is cached whole: a fresh cache makes an open one
@@ -1461,26 +1461,18 @@ bool GuideFrame::BuildProfileDataFromVendors()
        }

        // Each vendor comes from its preset cache where one covers it, which is
-        // what makes this worth doing instead of the scan below; loading into a
-        // bundle per vendor keeps the install order the startup path has.
+        // what makes this worth doing instead of the scan below.
        PresetBundle             bundle;
-        auto load_vendor = [](PresetBundle& into, const std::string& vendor,
-                              const boost::filesystem::path& dir, const PresetBundle* base) {
-            into.load_vendor_configs_from_json(dir.string(), vendor, PresetBundle::LoadSystem,
-                                               ForwardCompatibilitySubstitutionRule::EnableSilent, base);
-        };
-        for (const VendorSource& v : ordered) {
-            if (*m_cancel_token)
-                return false;   // as in the scan below: a vendor without a cache is parsed, and that takes time
-            if (v.name == filament_library) {
-                load_vendor(bundle, v.name, v.dir, nullptr);
-            } else {
-                PresetBundle tmp;
-                load_vendor(tmp, v.name, v.dir, &bundle);
-                bundle.merge_presets(std::move(tmp));
-            }
-        }
-        if (bundle.vendors.empty())
+        std::vector<std::string> failed;
+        const std::string errors = bundle.load_vendors(ordered, ForwardCompatibilitySubstitutionRule::EnableSilent,
+                                                       /*allow_cache=*/true, m_cancel_token.get(), &failed).second;
+        if (*m_cancel_token || bundle.vendors.empty())
+            return false;
+        if (! errors.empty())
+            BOOST_LOG_TRIVIAL(warning) << "GuideFrame: loading the vendors reported: " << errors;
+        // A vendor that failed to load sends this open to the scan below, which lists
+        // what it can read of every vendor.
+        if (! failed.empty())
            return false;
        if (! BuildProfileJson(bundle, /*require_all_resource_vendors=*/false))
            return false;
@@ -1732,7 +1724,7 @@ int GuideFrame::LoadProfileFamily(std::string strVendor, std::string strFilePath
                    cover_path = (boost::filesystem::absolute(boost::filesystem::path(resources_dir()) / "/web/image/printer/") / cover_file)
                                     .make_preferred();
            }
-            OneModel["cover"]                  = cover_path.string();
+            OneModel["cover"]                  = into_u8(file_url_from_path(cover_path));

            OneModel["nozzle_selected"] = "";

@@ -599,7 +599,7 @@ void ZUserLogin::OnScriptResponseMessage(wxCommandEvent &WXUNUSED(evt))

 bool  ZUserLogin::ShowErrorPage()
 {
-    wxString ErrortUrl = from_u8((boost::filesystem::path(resources_dir()) / "web\\login\\error.html").make_preferred().string());
+    wxString ErrortUrl = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/login/error.html");
    load_url(ErrortUrl);

    return true;
@@ -36,10 +36,10 @@ namespace GUI {
 WebViewPanel::WebViewPanel(wxWindow *parent)
        : wxPanel(parent, wxID_ANY, wxDefaultPosition, wxDefaultSize)
 {
-    wxString url = wxString::Format("file://%s/web/homepage/index.html", from_u8(resources_dir()));
+    wxString url = file_url_from_path(boost::filesystem::path(resources_dir()) / "web/homepage/index.html");
    wxString strlang = wxGetApp().current_language_code_safe();
    if (strlang != "")
-        url = wxString::Format("file://%s/web/homepage/index.html?lang=%s", from_u8(resources_dir()), strlang);
+        url += "?lang=" + strlang;

    wxBoxSizer* topsizer = new wxBoxSizer(wxVERTICAL);
    
@@ -1,5 +1,6 @@
 #include "MultiNozzleSync.hpp"

+#include "../GUI.hpp"
 #include "../GUI_App.hpp"
 #include "../I18N.hpp"
 #include "../Plater.hpp"
@@ -21,8 +22,6 @@
 #include <set>

 #include <wx/choice.h>
-#include <wx/filename.h>
-#include <wx/filesys.h>
 #include <wx/sizer.h>
 #include <wx/stattext.h>

@@ -641,8 +640,7 @@ NozzleListTable::NozzleListTable(wxWindow* parent) : wxPanel(parent,wxID_ANY,wxD
    m_web_view->AddScriptMessageHandler("nozzleListTable");
    m_web_view->EnableContextMenu(false);
    fs::path filepath = fs::path(resources_dir()) / "web/flush/NozzleListTable.html";
-    wxFileName fn(wxString::FromUTF8(filepath.string()));
-    wxString url = wxFileSystem::FileNameToURL(fn);
+    wxString url = file_url_from_path(filepath);
    m_web_view->LoadURL(url);

    auto sizer = new wxBoxSizer(wxVERTICAL);
@@ -48,20 +48,19 @@ constexpr char ORCA_BRIDGE_JS[] = R"JS(

 wxString bootstrap_url()
 {
-    return wxString("file://") + from_u8((boost::filesystem::path(resources_dir()) / BOOTSTRAP_PAGE).make_preferred().string());
+    return file_url_from_path(boost::filesystem::path(resources_dir()) / BOOTSTRAP_PAGE);
 }

 wxString content_base_url()
 {
-    const std::string dir = (boost::filesystem::path(resources_dir()) / "web").make_preferred().string();
-    return wxString("file://") + from_u8(dir) + "/";
+    return file_url_from_path(boost::filesystem::path(resources_dir()) / "web") + "/";
 }

 bool is_content_url(const wxString& url)
 {
-    // The web view reports the URL it parsed, which escapes anything the resources path holds
-    // (a space, a non-ASCII character), while content_base_url() is the raw path.
-    return wxURI::Unescape(url.BeforeFirst('#')) == content_base_url();
+    // The web view reports the URL it parsed, which may escape the resources path differently
+    // from content_base_url().
+    return wxURI::Unescape(url.BeforeFirst('#')) == wxURI::Unescape(content_base_url());
 }

 const char* orca_bridge_script() { return ORCA_BRIDGE_JS; }
@@ -192,7 +192,7 @@ bool WebViewHostDialog::create_webview(const std::string& resource_path,

 wxString WebViewHostDialog::build_resource_url(const std::string& resource_path) const
 {
-    wxString target_url = from_u8((boost::filesystem::path(resources_dir()) / resource_path).make_preferred().string());
+    wxString target_url = file_url_from_path(boost::filesystem::path(resources_dir()) / resource_path);

    if (append_language_to_url()) {
        const wxString lang = wxGetApp().current_language_code_safe();
@@ -202,7 +202,7 @@ wxString WebViewHostDialog::build_resource_url(const std::string& resource_path)
        }
    }

-    return wxString("file://") + target_url;
+    return target_url;
 }

 void WebViewHostDialog::load_url(const wxString& url)
@@ -464,7 +464,7 @@ WipingDialog::WipingDialog(wxWindow* parent, const int max_flush_volume) :
    wxString filepath_str = from_path(filepath);
    wxFileName fn(filepath_str);
    if(fn.FileExists()) {
-        wxString url = wxFileSystem::FileNameToURL(fn);
+        wxString url = file_url_from_path(filepath);
        BOOST_LOG_TRIVIAL(debug) << __FUNCTION__<< "File exists and load url " << url.ToStdString();
        m_webview->LoadURL(url);
        BOOST_LOG_TRIVIAL(debug) << __FUNCTION__<< "Successfully loaded url: " << url.ToStdString();
@@ -274,13 +274,4 @@ bool Duet::start_print(wxString &msg, const std::string &filename, ConnectionTyp
 	return res;
 }

-int Duet::get_err_code_from_body(const std::string &body) const
-{
-	pt::ptree root;
-	std::istringstream iss (body); // wrap returned json to istringstream
-	pt::read_json(iss, root);
-
-	return root.get<int>("err", 0);
-}
-
 }
@@ -40,7 +40,6 @@ private:
 	ConnectionType connect(wxString &msg) const;
 	void disconnect(ConnectionType connectionType) const;
 	bool start_print(wxString &msg, const std::string &filename, ConnectionType connectionType, bool simulationMode) const;
-	int get_err_code_from_body(const std::string &body) const;
 };

 }
@@ -146,15 +146,6 @@ bool ESP3D::start_print(wxString& msg, const std::string& filename) const
    return ret;
 }

-int ESP3D::get_err_code_from_body(const std::string& body) const
-{
-    pt::ptree          root;
-    std::istringstream iss(body); // wrap returned json to istringstream
-    pt::read_json(iss, root);
-
-    return root.get<int>("err", 0);
-}
-
 // ESP3D only accepts 8.3 filenames else it crashes marlin and other undefined behaviour
 std::string ESP3D::get_short_name(const std::string& filename) const
 {
@@ -33,7 +33,6 @@ private:
    std::string m_console_port;

    bool        start_print(wxString& msg, const std::string& filename) const;
-    int         get_err_code_from_body(const std::string& body) const;
    std::string get_short_name(const std::string& filename) const;
    std::string format_command(const std::string& path, const std::string& arg, const std::string& val) const;
 };
@@ -340,9 +340,7 @@ namespace Slic3r {
        if (classify_printer_model(config->opt_string("printer_model")) != ElegooPrinterType::CC2)
            return fallback_webui;

-        std::string web_path = resources_dir() + "/web/elegoolink/lan_service_web/index.html";
-        std::replace(web_path.begin(), web_path.end(), '\\', '/');
-        web_path = "file://" + web_path;
+        std::string web_path = GUI::into_u8(GUI::file_url_from_path(boost::filesystem::path(resources_dir()) / "web/elegoolink/lan_service_web/index.html"));
        const std::string token   = get_cc2_token(config->opt_string("printhost_apikey"));
        const std::string host_ip = Http::get_host_header_value(host);

@@ -510,12 +510,22 @@ bool Flashforge::fetch_material_slots(std::vector<FlashforgeMaterialSlot>& slots
    if (!request_local_api_json("detail", json{{"serialNumber", m_serial_number}, {"checkCode", m_check_code}}.dump(), body, msg))
        return false;

-    const auto parsed = json::parse(body, nullptr, false, true);
-    if (parsed.is_discarded()) {
+    if (!parse_material_slots(body, slots, supports_material_station)) {
        msg = _(L("Flashforge returned an invalid JSON response."));
        return false;
    }

+    return true;
+}
+
+bool Flashforge::parse_material_slots(const std::string& body, std::vector<FlashforgeMaterialSlot>& slots, bool* supports_material_station)
+{
+    slots.clear();
+
+    const auto parsed = json::parse(body, nullptr, false, true);
+    if (parsed.is_discarded())
+        return false;
+
    const auto& detail = parsed.contains("detail") ? parsed["detail"] : parsed;
    const auto& station = detail.contains("matlStationInfo") ? detail["matlStationInfo"] :
                          detail.contains("MatlStationInfo") ? detail["MatlStationInfo"] : json();
@@ -542,12 +552,21 @@ bool Flashforge::fetch_material_slots(std::vector<FlashforgeMaterialSlot>& slots
    if (supports_material_station != nullptr)
        *supports_material_station = reports_material_station;

+    // Fields are read leniently: firmware may send numbers as strings or flags as numbers.
    for (const auto& slot : slot_infos) {
+        if (!slot.is_object())
+            continue;
        FlashforgeMaterialSlot info;
-        info.slot_id        = slot.value("slotId", static_cast<int>(slots.size()) + 1);
-        info.has_filament   = slot.value("hasFilament", false);
-        info.material_name  = slot.value("materialName", std::string());
-        info.material_color = slot.value("materialColor", std::string());
+        info.slot_id = static_cast<int>(slots.size()) + 1;
+        if (const auto it = slot.find("slotId"); it != slot.end())
+            try_parse_json_int(*it, info.slot_id);
+        int has_filament = 0;
+        if (const auto it = slot.find("hasFilament"); it != slot.end() && try_parse_json_int(*it, has_filament))
+            info.has_filament = has_filament != 0;
+        if (const auto it = slot.find("materialName"); it != slot.end() && it->is_string())
+            info.material_name = it->get<std::string>();
+        if (const auto it = slot.find("materialColor"); it != slot.end() && it->is_string())
+            info.material_color = it->get<std::string>();
        slots.emplace_back(std::move(info));
    }

@@ -670,13 +689,4 @@ std::string Flashforge::extract_host_name() const
    return out;
 }

-int Flashforge::get_err_code_from_body(const std::string& body) const
-{
-    pt::ptree          root;
-    std::istringstream iss(body); // wrap returned json to istringstream
-    pt::read_json(iss, root);
-
-    return root.get<int>("err", 0);
-}
-
 } // namespace Slic3r
@@ -45,6 +45,8 @@ public:
    PrintHostPostUploadActions get_post_upload_actions() const override { return PrintHostPostUploadAction::StartPrint; }
    std::string                get_host() const override { return m_host; }
    bool                       fetch_material_slots(std::vector<FlashforgeMaterialSlot>& slots, bool* supports_material_station, wxString& msg) const;
+    // Parses a local API "detail" reply. Returns false when the body is not valid JSON.
+    static bool                parse_material_slots(const std::string& body, std::vector<FlashforgeMaterialSlot>& slots, bool* supports_material_station);
    static bool                discover_printers(std::vector<FlashforgeDiscoveredPrinter>& printers, wxString& msg, int timeout_ms = 10000, int idle_timeout_ms = 1500, int max_retries = 3);

 private:
@@ -68,7 +70,6 @@ private:
    bool request_local_api_json(const std::string& path, const std::string& body, std::string& response_body, wxString& error_msg) const;
    std::string make_http_url(const std::string& path) const;
    std::string extract_host_name() const;
-    int  get_err_code_from_body(const std::string &body) const;
    bool connect(wxString& msg) const;
    bool start_print(wxString& msg, const std::string& filename) const;
 };
@@ -141,13 +141,4 @@ bool MKS::start_print(wxString& msg, const std::string& filename) const
 	return ret;
 }

-int MKS::get_err_code_from_body(const std::string& body) const
-{
-	pt::ptree root;
-	std::istringstream iss(body); // wrap returned json to istringstream
-	pt::read_json(iss, root);
-
-	return root.get<int>("err", 0);
-}
-
 } // Slic3r
@@ -34,7 +34,6 @@ private:

 	std::string get_upload_url(const std::string& filename) const;
 	bool start_print(wxString& msg, const std::string& filename) const;
-	int get_err_code_from_body(const std::string& body) const;
 };

 }
@@ -339,62 +339,8 @@ bool PresetUpdater::priv::get_file(const std::string &url, const fs::path &targe
 //BBS: refine preset update logic
 bool PresetUpdater::priv::extract_file(const fs::path &source_path, const fs::path &dest_path)
 {
-    bool res = true;
-    std::string file_path = source_path.string();
-    std::string parent_path = (!dest_path.empty() ? dest_path : source_path.parent_path()).string();
-    mz_zip_archive archive;
-    mz_zip_zero_struct(&archive);
-
-    if (!open_zip_reader(&archive, file_path))
-    {
-        BOOST_LOG_TRIVIAL(error) << "Unable to open zip reader for "<<file_path;
-        return false;
-    }
-
-    mz_uint num_entries = mz_zip_reader_get_num_files(&archive);
-
-    mz_zip_archive_file_stat stat;
-    // we first loop the entries to read from the archive the .amf file only, in order to extract the version from it
-    for (mz_uint i = 0; i < num_entries; ++i)
-    {
-        if (mz_zip_reader_file_stat(&archive, i, &stat))
-        {
-            std::string dest_file = parent_path+"/"+stat.m_filename;
-            if (stat.m_is_directory) {
-                fs::path dest_path(dest_file);
-                if (!fs::exists(dest_path))
-                    fs::create_directories(dest_path);
-				continue;
-            }
-            else if (stat.m_uncomp_size == 0) {
-                BOOST_LOG_TRIVIAL(warning) << "[Orca Updater]Unzip: invalid size for file "<<stat.m_filename;
-                continue;
-            }
-            try
-            {
-                res = mz_zip_reader_extract_to_file(&archive, stat.m_file_index, dest_file.c_str(), 0);
-                if (!res) {
-                    BOOST_LOG_TRIVIAL(error) << "[Orca Updater]extract file "<<stat.m_filename<<" to dest "<<dest_file<<" failed";
-                    close_zip_reader(&archive);
-                    return res;
-                }
-                BOOST_LOG_TRIVIAL(info) << "[Orca Updater]successfully extract file " << stat.m_file_index << " to "<<dest_file;
-            }
-            catch (const std::exception& e)
-            {
-                // ensure the zip archive is closed and rethrow the exception
-                close_zip_reader(&archive);
-                BOOST_LOG_TRIVIAL(error) << "[Orca Updater]Archive read exception:"<<e.what();
-                return false;
-            }
-        }
-        else {
-            BOOST_LOG_TRIVIAL(warning) << "[Orca Updater]Unzip: read file stat failed";
-        }
-    }
-    close_zip_reader(&archive);
-
-	return true;
+    const std::string parent_path = (!dest_path.empty() ? dest_path : source_path.parent_path()).string();
+    return extract_archive_confined(source_path.string(), parent_path);
 }

 // Remove a leftover partial archive for the vendor about to be synchronized.
@@ -3,10 +3,13 @@
 #include <vector>
 #include <thread>
 #include <exception>
+#include <sstream>
 #include <boost/optional.hpp>
 #include <boost/log/trivial.hpp>
 #include <boost/filesystem.hpp>
 #include <nlohmann/json.hpp>
+#include <boost/property_tree/ptree.hpp>
+#include <boost/property_tree/json_parser.hpp>

 #include <wx/string.h>
 #include <wx/app.h>
@@ -172,6 +175,20 @@ std::string moonraker_error_reason(const std::string &body)

 } // namespace

+int PrintHost::get_err_code_from_body(const std::string &body)
+{
+    boost::property_tree::ptree root;
+    std::istringstream iss(body);
+    try {
+        boost::property_tree::read_json(iss, root);
+    } catch (const std::exception &ex) {
+        BOOST_LOG_TRIVIAL(error) << "PrintHost: response is not valid JSON: " << ex.what();
+        return -1;
+    }
+
+    return root.get<int>("err", 0);
+}
+
 wxString PrintHost::format_error(const std::string &body, const std::string &error, unsigned status) const
 {
    if (status != 0) {
@@ -415,12 +432,10 @@ void PrintHostJobQueue::priv::remove_source()
    source_to_remove.clear();
 }

-void PrintHostJobQueue::priv::perform_job(PrintHostJob the_job)
+bool PrintHostJobQueue::upload_job(PrintHostJob &job, PrintHost::ProgressFn progress_fn, PrintHost::ErrorFn error_fn, PrintHost::InfoFn info_fn)
 {
-    emit_progress(0);   // Indicate the upload is starting
-
    // Captured before upload_data is moved into upload() below.
-    const std::string upload_filename = the_job.upload_data.source_path.filename().string();
+    const std::string upload_filename = job.upload_data.source_path.filename().string();

    {
        LifecycleEventContext ctx;
@@ -429,19 +444,37 @@ void PrintHostJobQueue::priv::perform_job(PrintHostJob the_job)
        fire_lifecycle_event(LifecycleEvent::UploadStarted, ctx);
    }

-    bool success = the_job.printhost->upload(std::move(the_job.upload_data),
-        [this](Http::Progress progress, bool &cancel)   { this->progress_fn(std::move(progress), cancel); },
-        [this](wxString error)                          { this->error_fn(std::move(error)); },
-        [this](wxString tag, wxString host)             { this->info_fn(std::move(tag), std::move(host)); }
-    );
+    bool success = false;
+    std::string error;
+    // A throwing upload must not stop the worker, or later jobs would stay queued forever.
+    try {
+        success = job.printhost->upload(std::move(job.upload_data), std::move(progress_fn), error_fn, std::move(info_fn));
+    } catch (const std::exception &e) {
+        error = e.what();
+        error_fn(error);
+    }

    {
        LifecycleEventContext ctx;
        ctx.name  = upload_filename;
        ctx.code  = success ? LifecycleEvtCode::Ok : LifecycleEvtCode::Error;
+        ctx.msg   = error;
        fire_lifecycle_event(LifecycleEvent::UploadFinished, ctx);
    }

+    return success;
+}
+
+void PrintHostJobQueue::priv::perform_job(PrintHostJob the_job)
+{
+    emit_progress(0);   // Indicate the upload is starting
+
+    bool success = PrintHostJobQueue::upload_job(the_job,
+        [this](Http::Progress progress, bool &cancel)   { this->progress_fn(std::move(progress), cancel); },
+        [this](wxString error)                          { this->error_fn(std::move(error)); },
+        [this](wxString tag, wxString host)             { this->info_fn(std::move(tag), std::move(host)); }
+    );
+
    if (success) {
        emit_progress(100);
        if (the_job.switch_to_device_tab) {
@@ -87,6 +87,8 @@ public:

    static PrintHost* get_print_host(DynamicPrintConfig *config);
    static std::string get_print_host_webui(DynamicPrintConfig *config);
+    // Reads the "err" field of a JSON reply, 0 when absent. Returns -1 when the body is not valid JSON.
+    static int get_err_code_from_body(const std::string &body);

    //Support for cloud webui login
    virtual bool is_cloud() const { return false; }
@@ -150,6 +152,10 @@ public:
    void enqueue(PrintHostJob job);
    void cancel(size_t id);

+    // Uploads the job, firing UploadStarted and a matching UploadFinished. An exception thrown by
+    // the upload is reported through error_fn and makes the upload fail.
+    static bool upload_job(PrintHostJob &job, PrintHost::ProgressFn progress_fn, PrintHost::ErrorFn error_fn, PrintHost::InfoFn info_fn);
+
 private:
    struct priv;
    std::shared_ptr<priv> p;
@@ -654,13 +654,4 @@ bool UltiMaker::start_print(wxString &msg, const std::string &filename, Connecti
 	return res;
 }

-int UltiMaker::get_err_code_from_body(const std::string &body) const
-{
-	pt::ptree root;
-	std::istringstream iss (body); // wrap returned json to istringstream
-	pt::read_json(iss, root);
-
-	return root.get<int>("err", 0);
-}
-
 }
@@ -64,7 +64,6 @@ private:
 	void set_auth(Http& http) const;
 	void disconnect(ConnectionType connectionType) const;
 	bool start_print(wxString &msg, const std::string &filename, ConnectionType connectionType) const;
-	int get_err_code_from_body(const std::string &body) const;
 };

 }
@@ -768,3 +768,128 @@ TEST_CASE("Each filament prints with its variant of the extruder's variant strin
        CHECK(gcode.find("; nozzle_temperature = " + resolved + "\n") != std::string::npos);
    }
 }
+
+// An adaptive pressure advance model predicting the same pressure advance at every flow and acceleration.
+static std::string constant_pressure_advance_model(const std::string &pa)
+{
+    return pa + ",1,1000\n" + pa + ",500,1000\n" + pa + ",1,100000\n" + pa + ",500,100000";
+}
+
+// The pressure advance values a Klipper G-code sets.
+static std::set<std::string> pressure_advance_values(const std::string &gcode)
+{
+    const std::string token = "SET_PRESSURE_ADVANCE ADVANCE=";
+    std::set<std::string> values;
+    std::istringstream stream(gcode);
+    for (std::string line; std::getline(stream, line);)
+        if (line.rfind(token, 0) == 0)
+            values.insert(line.substr(token.size(), line.find(';') - token.size()));
+    return values;
+}
+
+// Pressure advance, and the adaptive pressure advance model, are tuned per extruder variant like the
+// other filament variant settings.
+TEST_CASE("Each filament sets the pressure advance of its extruder variant", "[MultiFilament]")
+{
+    auto [nozzle_volume_type, filament, pressure_advance, adaptive_pressure_advance] = GENERATE(table<NozzleVolumeType, int, std::string, std::string>({
+        { nvtStandard, 1, "0.021", "0.012" },
+        { nvtHighFlow, 1, "0.037", "0.034" },
+        { nvtHighFlow, 2, "0.043", "0.056" }, // filament 2 defines no High Flow variant
+    }));
+    const bool adaptive = GENERATE(false, true);
+    DYNAMIC_SECTION(get_nozzle_volume_type_string(nozzle_volume_type) << " nozzle, filament " << filament << (adaptive ? ", adaptive" : "")) {
+        DynamicPrintConfig config = multifilament_config(2, {
+            { "gcode_flavor",               "klipper" },
+            { "extruder_variant_list",      "Direct Drive Standard,Direct Drive High Flow" },
+            // filament 1 defines Standard (0.021) and High Flow (0.037), filament 2 Standard (0.043)
+            { "filament_extruder_variant",  "Direct Drive Standard;Direct Drive High Flow;Direct Drive Standard" },
+            { "filament_self_index",        "1,1,2" },
+            { "enable_pressure_advance",    "1,1,1" },
+            { "pressure_advance",           "0.021,0.037,0.043" },
+            { "adaptive_pressure_advance",  adaptive ? "1,1,1" : "0,0,0" },
+            { "sparse_infill_filament_id",  filament },
+            { "internal_solid_filament_id", filament },
+            { "top_surface_filament_id",    filament },
+            { "bottom_surface_filament_id", filament },
+            { "outer_wall_filament_id",     filament },
+            { "inner_wall_filament_id",     filament },
+            { "enable_prime_tower",         0 },
+            { "skirt_loops",                0 },
+            { "brim_type",                  "no_brim" },
+            // custom G-code indexes the per-filament arrays by filament
+            { "machine_start_gcode",        "; start pressure advance {pressure_advance[initial_extruder]}" },
+        });
+        config.option<ConfigOptionStrings>("adaptive_pressure_advance_model")->values = {
+            constant_pressure_advance_model("0.012"), constant_pressure_advance_model("0.034"), constant_pressure_advance_model("0.056") };
+        config.option<ConfigOptionEnumsGeneric>("nozzle_volume_type", true)->values = { nozzle_volume_type };
+        const std::string gcode = slice({ cube(20) }, config);
+
+        // The toolchange sets the variant's pressure advance; with adaptive pressure advance, the
+        // prediction of the variant's model then replaces it.
+        std::set<std::string> expected{ pressure_advance };
+        if (adaptive)
+            expected.insert(adaptive_pressure_advance);
+        CHECK(pressure_advance_values(gcode) == expected);
+        CHECK(gcode.find("; start pressure advance " + pressure_advance + "\n") != std::string::npos);
+    }
+}
+
+// On a printer with two extruders, a filament takes the pressure advance of the variant of the extruder
+// it is mapped to, whichever filament and extruder that is.
+TEST_CASE("Each filament sets the pressure advance of its extruder variant on a two-extruder printer", "[MultiFilament]")
+{
+    auto [filament, extruder, pressure_advance, adaptive_pressure_advance] = GENERATE(table<int, int, std::string, std::string>({
+        { 1, 1, "0.021", "0.012" },
+        { 1, 2, "0.037", "0.034" },
+        { 2, 1, "0.043", "0.056" },
+        { 2, 2, "0.049", "0.078" },
+    }));
+    const bool adaptive = GENERATE(false, true);
+    DYNAMIC_SECTION("filament " << filament << " on extruder " << extruder << (adaptive ? ", adaptive" : "")) {
+        // the other filament goes on the other extruder
+        const std::string filament_map = filament == 1 ? std::to_string(extruder) + "," + std::to_string(3 - extruder) :
+                                                         std::to_string(3 - extruder) + "," + std::to_string(extruder);
+        DynamicPrintConfig config = multifilament_config(2, {
+            { "gcode_flavor",                   "klipper" },
+            { "single_extruder_multi_material", 0 },
+            { "nozzle_diameter",                "0.4,0.4" },
+            { "extruder_printable_height",      "0,0" },
+            // extruder 1 has a Standard nozzle, extruder 2 a High Flow one
+            { "printer_extruder_id",            "1,2" },
+            { "printer_extruder_variant",       "Direct Drive Standard;Direct Drive High Flow" },
+            { "extruder_variant_list",          "Direct Drive Standard;Direct Drive High Flow" },
+            { "filament_map",                   filament_map },
+            // both filaments define Standard and High Flow
+            { "filament_extruder_variant",      "Direct Drive Standard;Direct Drive High Flow;Direct Drive Standard;Direct Drive High Flow" },
+            { "filament_self_index",            "1,1,2,2" },
+            { "enable_pressure_advance",        "1,1,1,1" },
+            { "pressure_advance",               "0.021,0.037,0.043,0.049" },
+            { "adaptive_pressure_advance",      adaptive ? "1,1,1,1" : "0,0,0,0" },
+            { "sparse_infill_filament_id",      filament },
+            { "internal_solid_filament_id",     filament },
+            { "top_surface_filament_id",        filament },
+            { "bottom_surface_filament_id",     filament },
+            { "outer_wall_filament_id",         filament },
+            { "inner_wall_filament_id",         filament },
+            { "enable_prime_tower",             0 },
+            { "skirt_loops",                    0 },
+            { "brim_type",                      "no_brim" },
+            // custom G-code indexes the per-filament arrays by filament
+            { "machine_start_gcode",            "; start pressure advance {pressure_advance[initial_extruder]}" },
+        });
+        config.option<ConfigOptionStrings>("adaptive_pressure_advance_model")->values = {
+            constant_pressure_advance_model("0.012"), constant_pressure_advance_model("0.034"),
+            constant_pressure_advance_model("0.056"), constant_pressure_advance_model("0.078") };
+        config.option<ConfigOptionEnumsGeneric>("extruder_type", true)->values = { etDirectDrive, etDirectDrive };
+        config.option<ConfigOptionEnumsGeneric>("nozzle_volume_type", true)->values = { nvtStandard, nvtHighFlow };
+        // keep the mapping above rather than grouping the filaments automatically
+        config.option<ConfigOptionEnum<FilamentMapMode>>("filament_map_mode", true)->value = fmmManual;
+        const std::string gcode = slice({ cube(20) }, config);
+
+        std::set<std::string> expected{ pressure_advance };
+        if (adaptive)
+            expected.insert(adaptive_pressure_advance);
+        CHECK(pressure_advance_values(gcode) == expected);
+        CHECK(gcode.find("; start pressure advance " + pressure_advance + "\n") != std::string::npos);
+    }
+}
@@ -489,6 +489,25 @@ TEST_CASE("gcode_skip_config_block omits the resolved-settings comment block", "
    CHECK(gcode.find("; EXECUTABLE_BLOCK_START") != std::string::npos);
 }

+// Some firmwares only scan the last N lines of the file for "estimated printing time", so it
+// must stay close to EOF regardless of the resolved-settings config block's size.
+TEST_CASE("The estimated printing time comment stays near the end of the file", "[Print]")
+{
+    const std::string gcode = slice({ cube(20) }, {});
+    const size_t config_block_end = gcode.find("; CONFIG_BLOCK_END");
+    const size_t filament_stats   = gcode.find("; filament used [mm]");
+    const size_t time_comment     = gcode.find("estimated printing time");
+    REQUIRE(config_block_end != std::string::npos);
+    REQUIRE(filament_stats != std::string::npos);
+    REQUIRE(time_comment != std::string::npos);
+    CHECK(filament_stats > config_block_end);
+    CHECK(time_comment > filament_stats);
+
+    const size_t line_start = gcode.rfind('\n', time_comment) + 1;
+    const size_t trailing_lines = std::count(gcode.begin() + line_start, gcode.end(), '\n');
+    CHECK(trailing_lines <= 5);
+}
+
 // Custom G-code templates substitute placeholders during export.
 TEST_CASE("Custom G-code placeholders are substituted", "[Print]")
 {
@@ -16,8 +16,10 @@ add_executable(${_TEST_NAME}_tests
    test_clipper_utils.cpp
    test_config.cpp
    test_config_variant_expansion.cpp
+    test_locales_utils.cpp
    test_drc.cpp
    test_toolordering_nozzle_group.cpp
+    test_parallel_resolve.cpp
    test_preset_bundle_loading.cpp
    test_preset_setting_id.cpp
    test_preset_diff.cpp
@@ -44,6 +46,7 @@ add_executable(${_TEST_NAME}_tests
    test_lay_on_face.cpp
    test_model.cpp
    test_utils.cpp
+    test_miniz_extension.cpp
    test_timeutils.cpp
    test_voronoi.cpp
    test_wipe_tower_estimate.cpp
@@ -717,3 +717,15 @@ TEST_CASE("get_index_for_extruder scales the variant column by the requested str
    REQUIRE(col0_stride2 == 0);
    REQUIRE(col1_stride2 == 2);
 }
+
+// A per-variant filament option read with a single value gives it to every filament variant. A project
+// exported by an older CLI holds a single value for an option no loaded preset defined, such as
+// filament_ironing_flow.
+TEST_CASE("A per-variant filament option read with a single value gives it to every filament variant", "[Config]")
+{
+    // filament 1 defines Standard and High Flow, filament 2 Standard
+    DynamicPrintConfig config;
+    config.option<ConfigOptionInts>("filament_self_index", true)->values = {1, 1, 2};
+    config.load_from_ini_string("pressure_advance = 0.021", ForwardCompatibilitySubstitutionRule::Disable);
+    REQUIRE(config.option<ConfigOptionFloats>("pressure_advance")->values == std::vector<double>({0.021, 0.021, 0.021}));
+}
@@ -0,0 +1,69 @@
+#include <catch2/catch_all.hpp>
+
+#include <clocale>
+
+#include "libslic3r/LocalesUtils.hpp"
+
+using namespace Slic3r;
+
+namespace {
+
+// Switches this thread's numeric locale to one whose decimal separator is a comma,
+// when the system has one installed.
+struct CommaNumericLocale
+{
+#ifdef _WIN32
+    bool apply()
+    {
+        for (const char* name : { "de-DE", "German_Germany.1252" })
+            if (std::setlocale(LC_NUMERIC, name) != nullptr)
+                return true;
+        return false;
+    }
+#else
+    locale_t locale { (locale_t) 0 };
+    bool apply()
+    {
+        for (const char* name : { "de_DE.UTF-8", "de_DE.utf8", "de_DE" })
+            if ((locale = newlocale(LC_NUMERIC_MASK, name, (locale_t) 0)) != (locale_t) 0) {
+                uselocale(locale);
+                return true;
+            }
+        return false;
+    }
+    // Freed once the setters around apply() have put the thread's own locale back.
+    ~CommaNumericLocale()
+    {
+        if (locale != (locale_t) 0)
+            freelocale(locale);
+    }
+#endif
+};
+
+} // namespace
+
+TEST_CASE("a setter nested in another leaves the C locale in place for the outer one", "[LocalesUtils]")
+{
+    CNumericLocalesSetter outer;
+    {
+        CNumericLocalesSetter inner;
+        CHECK(is_decimal_separator_point());
+    }
+    CHECK(is_decimal_separator_point());
+}
+
+TEST_CASE("a setter nested in another sets C again when the locale changed between them", "[LocalesUtils]")
+{
+    CommaNumericLocale comma;
+    {
+        CNumericLocalesSetter outer;
+        if (! comma.apply())
+            SKIP("no locale with a comma decimal separator is installed");
+        REQUIRE_FALSE(is_decimal_separator_point());
+        {
+            CNumericLocalesSetter inner;
+            CHECK(is_decimal_separator_point());
+        }
+        CHECK_FALSE(is_decimal_separator_point());
+    }
+}
@@ -0,0 +1,194 @@
+#include <catch2/catch_all.hpp>
+
+#include "libslic3r/miniz_extension.hpp"
+
+#include "test_utils.hpp"
+
+#include <boost/filesystem.hpp>
+
+#include <algorithm>
+#include <fstream>
+#include <iterator>
+#include <string>
+#include <utility>
+#include <vector>
+
+using namespace Slic3r;
+namespace fs = boost::filesystem;
+
+namespace {
+
+void write_zip(const fs::path &zip_file, const std::vector<std::pair<std::string, std::string>> &entries)
+{
+    mz_zip_archive zip;
+    mz_zip_zero_struct(&zip);
+    REQUIRE(open_zip_writer(&zip, zip_file.string()));
+    for (const auto &[name, content] : entries)
+        REQUIRE(mz_zip_writer_add_mem(&zip, name.c_str(), content.data(), content.size(), MZ_DEFAULT_COMPRESSION));
+    REQUIRE(mz_zip_writer_finalize_archive(&zip));
+    REQUIRE(close_zip_writer(&zip));
+}
+
+// miniz refuses to write a name starting with '/', so write a placeholder of the same length and patch it in place.
+void rename_entry(const fs::path &zip_file, const std::string &from, const std::string &to)
+{
+    REQUIRE(from.size() == to.size());
+    std::string bytes;
+    {
+        std::ifstream in(zip_file.string(), std::ios::binary);
+        bytes.assign(std::istreambuf_iterator<char>(in), std::istreambuf_iterator<char>());
+    }
+    size_t count = 0;
+    for (size_t pos = bytes.find(from); pos != std::string::npos; pos = bytes.find(from, pos + to.size()), ++count)
+        bytes.replace(pos, from.size(), to);
+    // Once in the local header and once in the central directory.
+    REQUIRE(count == 2);
+    std::ofstream out(zip_file.string(), std::ios::binary | std::ios::trunc);
+    out << bytes;
+}
+
+std::vector<std::string> list_dir(const fs::path &dir)
+{
+    std::vector<std::string> names;
+    for (const fs::directory_entry &entry : fs::directory_iterator(dir))
+        names.push_back(entry.path().filename().string());
+    std::sort(names.begin(), names.end());
+    return names;
+}
+
+std::string read_file(const fs::path &file)
+{
+    std::ifstream in(file.string(), std::ios::binary);
+    return std::string(std::istreambuf_iterator<char>(in), std::istreambuf_iterator<char>());
+}
+
+} // namespace
+
+TEST_CASE("Confined extraction writes a well-formed archive under the target directory", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+    write_zip(zip_file, {{"vendor/", ""}, {"vendor/machine/", ""}, {"vendor.json", "{\"a\":1}"}, {"vendor/machine/printer.json", "{\"b\":2}"}});
+
+    REQUIRE(extract_archive_confined(zip_file.string(), target.string()));
+    CHECK(fs::is_directory(target / "vendor"));
+    CHECK(read_file(target / "vendor.json") == "{\"a\":1}");
+    CHECK(read_file(target / "vendor" / "machine" / "printer.json") == "{\"b\":2}");
+}
+
+TEST_CASE("Confined extraction rejects an archive with an entry outside the target directory", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+
+    const std::string escaping_entry = GENERATE(std::string("../escape.txt"), std::string("..\\escape.txt"),
+                                                std::string("sub/../../escape.txt"), std::string("C:/escape.txt"),
+                                                std::string("C:escape.txt"), std::string("\\escape.txt"));
+    // The normal entry comes first so a per-entry check would already have written it.
+    write_zip(zip_file, {{"normal.json", "{}"}, {escaping_entry, "escaped"}});
+
+    CAPTURE(escaping_entry);
+    CHECK_FALSE(extract_archive_confined(zip_file.string(), target.string()));
+    CHECK_FALSE(fs::exists(tmp.path() / "escape.txt"));
+    CHECK(fs::is_empty(target));
+}
+
+TEST_CASE("Confined extraction rejects an archive with an absolute entry name", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+
+    const std::string absolute    = (tmp.path() / "escape.txt").generic_string();
+    const std::string placeholder = "#" + absolute.substr(1);
+    write_zip(zip_file, {{"normal.json", "{}"}, {placeholder, "escaped"}});
+    rename_entry(zip_file, placeholder, absolute);
+
+    CHECK_FALSE(extract_archive_confined(zip_file.string(), target.string()));
+    CHECK_FALSE(fs::exists(tmp.path() / "escape.txt"));
+    CHECK(fs::is_empty(target));
+}
+
+TEST_CASE("Confined extraction rejects a directory entry outside the target directory", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+    write_zip(zip_file, {{"vendor/", ""}, {"../outside/", ""}});
+
+    CHECK_FALSE(extract_archive_confined(zip_file.string(), target.string()));
+    CHECK_FALSE(fs::exists(tmp.path() / "outside"));
+    CHECK(fs::is_empty(target));
+}
+
+TEST_CASE("Confined extraction validates zero-size entries like any other", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+
+    SECTION("an empty file inside the target does not fail the archive") {
+        write_zip(zip_file, {{"empty.json", ""}, {"vendor.json", "{}"}});
+        CHECK(extract_archive_confined(zip_file.string(), target.string()));
+        CHECK(read_file(target / "vendor.json") == "{}");
+    }
+    SECTION("an empty file outside the target rejects the archive") {
+        write_zip(zip_file, {{"vendor.json", "{}"}, {"../escape.txt", ""}});
+        CHECK_FALSE(extract_archive_confined(zip_file.string(), target.string()));
+        CHECK_FALSE(fs::exists(tmp.path() / "escape.txt"));
+        CHECK(fs::is_empty(target));
+    }
+}
+
+TEST_CASE("Confined extraction writes nothing outside the target for Windows-specific name forms", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    fs::create_directories(target);
+
+    // Windows strips trailing dots and spaces and maps device names; whether these extract depends on the
+    // platform, but none of them may land beside the target.
+    const std::string name = GENERATE(std::string("name."), std::string("name "), std::string("..."), std::string(".. "),
+                                      std::string(".. /escape.txt"), std::string(".../escape.txt"), std::string("CON"),
+                                      std::string("sub/NUL.txt"), std::string("C:escape.txt"));
+    write_zip(zip_file, {{name, "payload"}});
+
+    CAPTURE(name);
+    extract_archive_confined(zip_file.string(), target.string());
+    CHECK(list_dir(tmp.path()) == std::vector<std::string>{"bundle.zip", "cache"});
+}
+
+#ifndef _WIN32
+TEST_CASE("Confined extraction replaces a symlink at the destination instead of writing through it", "[MinizExtension]")
+{
+    ScopedTemporaryDir tmp;
+    const fs::path     zip_file = tmp.path() / "bundle.zip";
+    const fs::path     target   = tmp.path() / "cache";
+    const fs::path     outside  = tmp.path() / "outside";
+    fs::create_directories(target);
+    fs::create_directories(outside);
+    write_zip(zip_file, {{"vendor.json", "{\"a\":1}"}});
+
+    SECTION("a dangling symlink") {
+        fs::create_symlink(outside / "vendor.json", target / "vendor.json");
+        CHECK(extract_archive_confined(zip_file.string(), target.string()));
+        CHECK_FALSE(fs::exists(outside / "vendor.json"));
+        CHECK_FALSE(fs::is_symlink(fs::symlink_status(target / "vendor.json")));
+        CHECK(read_file(target / "vendor.json") == "{\"a\":1}");
+    }
+    SECTION("a symlink to an existing file") {
+        { std::ofstream((outside / "vendor.json").string()) << "original"; }
+        fs::create_symlink(outside / "vendor.json", target / "vendor.json");
+        extract_archive_confined(zip_file.string(), target.string());
+        CHECK(read_file(outside / "vendor.json") == "original");
+    }
+}
+#endif
@@ -19,9 +19,8 @@ struct LoadedObj
    ObjInfo      info;
 };

-// A tetrahedron with a material and two texture coordinates, (0.25, 0.5) and (0.75, 1).
-// Only the first face and the vt lines are varied; the other three faces reference vt 1.
-LoadedObj load_textured_tetrahedron(const std::string &first_face, const std::string &vts = "vt 0.25 0.5\nvt 0.75 1\n")
+// Loads an OBJ made of the given lines, with a material library that defines material "a".
+LoadedObj load_textured_obj(const std::string &body)
 {
    ScopedTemporaryFile obj(".obj");
    ScopedTemporaryFile mtl(".mtl");
@@ -31,12 +30,7 @@ LoadedObj load_textured_tetrahedron(const std::string &first_face, const std::st
    }
    {
        boost::nowide::ofstream out(obj.string());
-        out << "mtllib " << mtl.path().filename().string() << "\n"
-            << "v 0 0 0\nv 10 0 0\nv 0 10 0\nv 0 0 10\n"
-            << vts
-            << "usemtl a\n"
-            << first_face << "\n"
-            << "f 1/1 2/1 4/1\nf 1/1 4/1 3/1\nf 2/1 3/1 4/1\n";
+        out << "mtllib " << mtl.path().filename().string() << "\n" << body;
    }
    LoadedObj   loaded;
    std::string message;
@@ -44,6 +38,21 @@ LoadedObj load_textured_tetrahedron(const std::string &first_face, const std::st
    return loaded;
 }

+// A tetrahedron with a material and two texture coordinates, (0.25, 0.5) and (0.75, 1).
+// Only the first face and the vt lines are varied; the other three faces reference vt 1.
+LoadedObj load_textured_tetrahedron(const std::string &first_face, const std::string &vts = "vt 0.25 0.5\nvt 0.75 1\n")
+{
+    return load_textured_obj("v 0 0 0\nv 10 0 0\nv 0 10 0\nv 0 0 10\n" + vts + "usemtl a\n" + first_face + "\n" +
+                             "f 1/1 2/1 4/1\nf 1/1 4/1 3/1\nf 2/1 3/1 4/1\n");
+}
+
+// Texture coordinate n is (n / 10, n / 20), so a UV identifies the vt it came from.
+void check_uv_is_vt(const Vec2f &uv, int vt)
+{
+    CHECK_THAT(uv.x(), WithinAbs(vt / 10., 1e-6));
+    CHECK_THAT(uv.y(), WithinAbs(vt / 20., 1e-6));
+}
+
 } // namespace

 TEST_CASE("An out-of-range texture index falls back to a zero UV and keeps the geometry", "[OBJ][Regression]")
@@ -120,3 +129,39 @@ TEST_CASE("A texture coordinate with w does not shift the indices of the ones af
    CHECK_THAT(uv[2].x(), WithinAbs(0.75, 1e-6));
    CHECK_THAT(uv[2].y(), WithinAbs(1., 1e-6));
 }
+
+TEST_CASE("Both triangles of a quad take the texture coordinates of their own corners", "[OBJ][Regression]")
+{
+    const LoadedObj loaded = load_textured_obj("v 0 0 0\nv 10 0 0\nv 10 10 0\nv 0 10 0\n"
+                                               "vt 0.1 0.05\nvt 0.2 0.1\nvt 0.3 0.15\nvt 0.4 0.2\n"
+                                               "usemtl a\n"
+                                               "f 1/1 2/2 3/3 4/4\n");
+
+    REQUIRE(loaded.ok);
+    REQUIRE(loaded.mesh.facets_count() == 2);
+    REQUIRE(loaded.info.uvs.size() == 2);
+    check_uv_is_vt(loaded.info.uvs[0][0], 1);
+    check_uv_is_vt(loaded.info.uvs[0][1], 2);
+    check_uv_is_vt(loaded.info.uvs[0][2], 3);
+    check_uv_is_vt(loaded.info.uvs[1][0], 1);
+    check_uv_is_vt(loaded.info.uvs[1][1], 3);
+    check_uv_is_vt(loaded.info.uvs[1][2], 4);
+}
+
+TEST_CASE("Texture coordinates follow the corners of a mesh that is flipped on load", "[OBJ][Regression]")
+{
+    // The faces wind inwards, so the loader flips them. Vertex n uses vt n.
+    const LoadedObj loaded = load_textured_obj("v 0 0 0\nv 10 0 0\nv 0 10 0\nv 0 0 10\n"
+                                               "vt 0.1 0.05\nvt 0.2 0.1\nvt 0.3 0.15\nvt 0.4 0.2\n"
+                                               "usemtl a\n"
+                                               "f 1/1 2/2 3/3\nf 1/1 4/4 2/2\nf 1/1 3/3 4/4\nf 2/2 4/4 3/3\n");
+
+    REQUIRE(loaded.ok);
+    const indexed_triangle_set &its = loaded.mesh.its;
+    CHECK(its_volume(its) > 0.f);
+    REQUIRE(its.indices.size() == 4);
+    REQUIRE(loaded.info.uvs.size() == 4);
+    for (size_t face = 0; face < its.indices.size(); ++face)
+        for (int corner = 0; corner < 3; ++corner)
+            check_uv_is_vt(loaded.info.uvs[face][corner], its.indices[face][corner] + 1);
+}
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Fernando Marino`Fernando Marino yw4z	789f848694	Write the estimated printing time comment after the config block, not before (#15897 ) Co-authored-by: Fernando Marino <f.marino@rheagroup.com> Co-authored-by: yw4z <ywsyildiz@gmail.com>	2026-09-29 19:18:15 -03:00
Rodrigo FaselliandIan Bassi	3a0694dce6	Remember last print action (#15774 ) Co-authored-by: Ian Bassi <ian.bassi@outlook.com>	2026-09-29 19:17:45 -03:00
Kris AustinandRodrigo Faselli	f5679ad343	perf: load presets in parallel, cutting preset load time by over 60% (#15943 ) Co-authored-by: Rodrigo Faselli <162915171+RF47@users.noreply.github.com>	2026-09-29 18:13:44 -03:00
HanifKoh	2769b12ce7	Give OBJ Quad and Flipped Faces the Texture Coordinates of Their Own Corners (#15977 ) load_obj emits the second triangle of a quad from corners 0, 2 and 3, but read its texture coordinates from corners 0, 1 and 2, so half of every textured quad sampled the wrong part of the texture. The corner indices are now passed down to where the coordinates are read. A mesh with inward-facing triangles is flipped after loading, which swaps corners 1 and 2 of every face. The texture coordinates were left as they were. They are now swapped along with the corners.	2026-09-30 03:13:29 +08:00
HanifKoh	203bc63f35	Escape Project Metadata in the Project Page and Restrict Accessory Opening (#15956 ) * Escape Project Metadata in the Project Page and Restrict Accessory Opening The Project page rendered the model and profile name, author, description and accessory file names from the 3MF as live HTML. Names, authors and file names are now set as text, and the file list is built from DOM nodes with bound click handlers instead of concatenated markup. Descriptions can legitimately carry rich-text HTML, so they are rebuilt from an inert DOMParser document, keeping only plain formatting tags, http(s) links and http(s) images, with every other attribute dropped. Opening an accessory from the page now only launches regular files that lie inside the project's extracted auxiliary directory. The containment check is a new libslic3r helper, is_absolute_path_within_root, built on is_path_within_root so symlinks leading out of the root are rejected too. * Tighten Project Page Description Rendering and Keep More Formatting Link and image URLs in descriptions must now start with an http or https scheme as written and parse as such with the URL parser. Preview images are built as DOM nodes like the file list, and accessory names show their full text as a tooltip. Descriptions keep more plain formatting: del, ins, figure, figcaption, dl, dt, dd, caption, q, abbr, kbd and wbr, plus alt, title, width and height on images, colspan and rowspan on table cells and start on ordered lists. Numeric attributes must be plain integers. Embedded YouTube players become a link to the video. * Confirm Before Opening Program Attachments and Load Only HTTPS Images Opening a project attachment whose type runs as a program or script (executables, installers, shortcuts, shell and PowerShell scripts, macOS command files and apps, Linux desktop entries) now asks for confirmation first. The check lives in libslic3r as is_executable_file_name and ignores the trailing dots and spaces Windows strips from file names. Images in project descriptions are kept only when they load over https, so opening the Project tab no longer issues plain-http requests. * Open Project Attachments Through One Guarded Helper The Edit Project Info view launched attachments directly, without the checks the project page has. Both now call desktop_open_project_attachment, which checks that the file is inside the auxiliary directory, asks for confirmation where needed and then opens it. The auxiliary root was built through encode_path, which returns code page bytes on Windows, while boost::filesystem reads a narrow string as UTF-8. With a non-ASCII temporary directory the root never matched and no attachment opened. It is now built from the UTF-8 path directly. The list of program extensions could not be kept complete and let unknown types open without a prompt. It is replaced by is_safe_to_open_file_name, a list of plain document, image, model and video types that open directly. Everything else asks first.	2026-09-30 00:39:30 +08:00
HanifKoh	e40030cf81	Stop Malformed Network Responses from Crashing the App (#15947 ) * Stop Malformed Network Responses from Crashing the App Duet, MKS and UltiMaker parsed print host replies with boost read_json inside the HTTP completion callback with no try, so an HTML or truncated reply threw out of the Physical Printer Test button and terminated the app, or killed the upload queue thread. The five identical copies of the parser (ESP3D's and Flashforge's were unused) are replaced by one shared PrintHost::get_err_code_from_body that reports a non-JSON reply as an error. The upload queue now catches a failing job per job, so one bad upload no longer leaves later jobs queued forever. Flashforge read material station slots with nlohmann value(), which throws on off-type fields or non-object entries. The parsing moves into Flashforge::parse_material_slots, which reads fields leniently with the existing try_parse_json_int and skips bad entries. UserManager::parse_json parsed the payload before its try block; the parse now happens inside it. * Keep UploadFinished Paired with UploadStarted When an Upload Throws The exception from a throwing upload was caught around perform_job, so the UploadFinished lifecycle event was skipped and plugins saw an upload start that never finished. The catch now sits around the upload call. The error is reported through the job's error callback and UploadFinished is fired with an error code, as for any other failed upload. The worker keeps running for the next job. The started, upload and finished sequence moved to PrintHostJobQueue::upload_job so it can be tested without the dialog.	2026-09-30 00:39:01 +08:00
HanifKoh	ba468c842d	Confine Updater and Plugin Archive Extraction to the Target Directory (#15957 ) * Confine Updater Archive Extraction to the Target Directory The preset updater extracted downloaded archives by appending each entry name to the cache directory, and the network plugin installer did the same for the plugin folder, without checking that the result stays inside it. Move the updater's extraction into libslic3r as extract_archive_confined, which validates every entry with is_path_within_root before writing anything and fails the whole archive if one entry resolves outside the target. The plugin installer now rejects such an entry the same way. Well formed archives extract exactly as before. * Harden Archive Extraction Against Symlinks The plugin installer now creates a symlink entry only when its target is relative and, joined to the link's own directory, passes is_path_within_root, via the new is_symlink_target_within_root helper. Before writing any entry it checks the destination with symlink_status, so an existing symlink, dangling or not, is replaced rather than followed, and it creates parent directories inside the existing error handling. extract_archive_confined replaces a symlink at a destination file the same way. is_path_within_root now ignores a trailing separator on the root, which previously made every path fail the check. * Validate Plugin Symlink Targets Before Replacing Existing Files A symlink entry's target is now read and checked before anything already at its destination is removed or renamed aside, so an archive rejected for its link target leaves the installed plugin files in place. * Reject Paths with an Embedded NUL When Confining Extraction is_path_within_root compared each component with "..", so a name such as "..\0" passed the check. The filesystem calls stop at the NUL and act on a shorter path than the one that was checked: a symlink target read from a plugin archive as raw bytes was created as "..", pointing out of the plugin directory. A path containing a NUL is now rejected before anything touches the filesystem, which covers every caller, including entry names taken from the Unicode Path extra field.	2026-09-29 23:40:12 +08:00
SoftFever	dd9b5dc0d4	Tune pressure advance separately for each extruder variant (#15986 ) * Tune pressure advance separately for each extruder variant Pressure advance, adaptive pressure advance and its model can now take a different value for each extruder variant of a filament, such as Standard and High Flow nozzles, like the other per-variant filament settings. Projects saved with one value per filament apply it to every variant of that filament, and the addnorth BBL filaments in the Orca Filament Library are updated to the per-variant layout. * Move Nozzle type to each extruder's settings page Editing other settings on an Extruder page of a single-extruder multi-material printer no longer triggers the nozzle diameter prompt. * Fix command-line slicing when a filament leaves out a per-variant setting	2026-09-29 23:23:08 +08:00
HanifKoh	e68694dbaf	Percent-Encode Local File URLs for Embedded Web Pages (#15961 ) * Percent-Encode Local File URLs for Embedded Web Pages The Home tab, setup wizard, Project tab and other embedded pages were loaded from file:// URLs built by pasting the resources path into a string. A '#', '%' or '?' in the install path was then read as a URL fragment, escape or query, so the pages failed to load, for example a portable install under D:\#OneDrive showed a directory listing instead of the setup wizard. Add file_url_from_path(), built on wxFileSystem::FileNameToURL, and use it wherever a local page or image URL is built from a path. Queries such as ?lang= are appended after the path is encoded. The wizard's printer cover images are passed to the page as file URLs too. * Encode the Login Error Page URL and Cover More Windows Path Forms The login dialog's error page was still loaded from a raw resources path; it now uses file_url_from_path like the other local pages. The Windows file URL tests now also cover a resources path joined with a forward-slash relative path, as the callers build them, and a UNC path. * Build the Flush Dialog Page URLs with the Shared Helper WipingDialog and NozzleListTable still called wxFileSystem::FileNameToURL directly. They now go through file_url_from_path like every other local page, so the URLs are built in one place. Adds a test for a resources directory with a '#' in its name, which the plugin page check did not recognise before.	2026-09-29 22:30:56 +08:00
SoftFever	1504bd7153	Fix command-line slicing when a filament leaves out a per-variant setting	2026-09-29 21:09:20 +08:00
SoftFever	d87fe1b290	Merge branch 'main' into feature/pa_per_extruder_variant	2026-09-29 19:15:17 +08:00
Kris Austin	72cfe71b81	fix: link webkit2gtk and X11 on every Linux build, not only Flatpak (#15972 ) libslic3r_gui calls webkit_* directly, and OrcaSlicer.cpp and libspnav call Xlib, but both libraries were only linked when FLATPAK was set. The default build links because the bundled static wxWidgets lists them in wx-config. A shared wxWidgets does not, so any build against one, like the Flatpak build or a distro package, fails with undefined webkit_* and X* symbols.	2026-09-29 08:04:48 -03:00
SoftFever	50eea48408	Move Nozzle type to each extruder's settings page Editing other settings on an Extruder page of a single-extruder multi-material printer no longer triggers the nozzle diameter prompt.	2026-09-29 17:52:19 +08:00
SoftFever	ef0c656932	Tune pressure advance separately for each extruder variant Pressure advance, adaptive pressure advance and its model can now take a different value for each extruder variant of a filament, such as Standard and High Flow nozzles, like the other per-variant filament settings. Projects saved with one value per filament apply it to every variant of that filament, and the addnorth BBL filaments in the Orca Filament Library are updated to the per-variant layout.	2026-09-29 17:52:13 +08:00