Merge branch 'main' into feature/filament_id

Brings in 560 commits (merge base 2026-07-04 .. origin/main af9fd10d7a).
19 conflicts resolved; the other 138 touched files auto-merged.

Conflict resolutions
- Snapmaker/Polymaker (7): main normalised JSON key order in #15039 while this
  branch inserted filament_id/filament_vendor. Took main's key order and kept
  this branch's values, inserting a single filament_id key rather than letting
  git's line merge leave duplicate "from"/"instantiation" keys.
- re3D rPETG @0.8/@1.75 nozzle (2): main renamed these from "re3D Greengate
  rPETG @*" and re-vendored GreenGate3D -> re3D (#15169). Git's rename-aware
  merge produced a file with two filament_vendor keys; took main's version
  wholesale instead. The id is reconciled by the tooling, not by hand.
- re3D rPP (1): kept main's inherits change (fdm_filament_pet -> fdm_filament_pp,
  local filament_type override dropped) and its widened compatible_printers.
  The flattened type is still PP, so the product triple and id OFfHGM1D are
  unchanged.
- re3D Greengate rPETG.json, Afinia {ABS+,ABS,PLA,TPU,Value ABS,Value PLA}.json
  (7 modify/delete): accepted main's deletions. The Afinia ids are not orphaned
  - the surviving @HS presets resolve the same triple and already carry the
  same ids, so nothing is retired.
- .github/workflows/check_profiles.yml: kept both main's new "validate slice"
  step and this branch's tree-wide filament-subtype check.
- tests/libslic3r/CMakeLists.txt: kept both test_filament_id_succession.cpp and
  main's test_preset_diff.cpp.

Verified
- No conflict markers; all 12795 profile JSONs parse with no duplicate keys.
- All branch artifacts (tooling, snapshot, ledger, doc, tests) intact and
  unmodified by the merge.
- The succession-ledger C++ call sites survived main's refactors; audited
  Preset.{cpp,hpp}, PresetBundle.cpp, DeviceManager.cpp, PresetComboBoxes.cpp,
  CaliHistoryDialog.cpp, MoonrakerPrinterAgent.cpp against base/ours/theirs.
- scripts/tests: 115/116 pass.

Known follow-up: assign_filament_ids.py --check reports 243 errors, all from
filament data main added in the last month (BBL/addnorth, Qidi X5/Plus 5,
Snapmaker U1, re3D). The single failing unit test is the live-tree conformance
test asserting that count is zero. Reconciliation lands separately.

.github/workflows/check_profiles.yml

@@ -41,7 +41,7 @@ jobs:
           curl -L -o OrcaSlicer_profile_validator https://github.com/OrcaSlicer/OrcaSlicer/releases/download/nightly-builds/OrcaSlicer_profile_validator_Linux_Ubuntu2404_nightly
           chmod +x ./OrcaSlicer_profile_validator
 
-      # validate profiles
+      # Validate all system profiles.
       - name: validate system profiles
         id: validate_system
         continue-on-error: true
@@ -49,6 +49,15 @@ jobs:
           set +e
           ./OrcaSlicer_profile_validator -p ${{ github.workspace }}/resources/profiles -l 2 2>&1 | tee ${{ runner.temp }}/validate_system.log
           exit ${PIPESTATUS[0]}
+      # Slice a two-colour cube through every printer so all custom g-code (incl. change_filament_gcode)
+      # is expanded - catches undefined-placeholder / invalid-flow bugs the static checks above cannot see.
+      - name: validate slice (expand custom g-code)
+        id: validate_slice
+        continue-on-error: true
+        run: |
+          set +e
+          ./OrcaSlicer_profile_validator -p ${{ github.workspace }}/resources/profiles -s -l 2 2>&1 | tee ${{ runner.temp }}/validate_slice.log
+          exit ${PIPESTATUS[0]}
       # All vendors' filament_id collisions were fixed (see scripts/filament_id_snapshot.json),
       # so the duplicate-filament-subtype check runs tree-wide.
       - name: validate filament subtype check
@@ -58,20 +67,6 @@ jobs:
           set +e
           ./OrcaSlicer_profile_validator -p ${{ github.workspace }}/resources/profiles -l 2 -f 2>&1 | tee ${{ runner.temp }}/validate_filament_subtypes.log
           exit ${PIPESTATUS[0]}
-      # Flag inherits/compatible_printers/compatible_prints references that point at a deleted or
-      # renamed preset. Opt-in per vendor for now (via -r); enabled for BBL and Qidi until other
-      # vendors' profiles are cleaned up. Runs before the custom-preset injection below.
-      - name: validate preset references for BBL and Qidi profiles
-        id: validate_preset_references
-        continue-on-error: true
-        run: |
-          set +e
-          rc=0
-          for v in BBL Qidi; do
-            ./OrcaSlicer_profile_validator -p ${{ github.workspace }}/resources/profiles -l 2 -v "$v" -r 2>&1 | tee -a ${{ runner.temp }}/validate_preset_references.log
-            [ ${PIPESTATUS[0]} -ne 0 ] && rc=1
-          done
-          exit $rc
 
       - name: validate custom presets
         id: validate_custom
@@ -181,7 +176,7 @@ jobs:
           echo "${{ github.event.pull_request.number }}" > ${{ runner.temp }}/profile-check-results/pr_number.txt
 
       - name: Prepare comment artifact
-        if: ${{ always() && github.event_name == 'pull_request' && (steps.extra_json_check.outcome == 'failure' || steps.validate_system.outcome == 'failure' || steps.validate_filament_subtypes.outcome == 'failure' || steps.validate_preset_references.outcome == 'failure' || steps.validate_custom.outcome == 'failure') }}
+        if: ${{ always() && github.event_name == 'pull_request' && (steps.extra_json_check.outcome == 'failure' || steps.validate_system.outcome == 'failure' || steps.validate_slice.outcome == 'failure' || steps.validate_filament_subtypes.outcome == 'failure' || steps.validate_custom.outcome == 'failure') }}
         run: |
           {
             # Marker matched by check_profiles_comment.yml to delete prior comments.
@@ -207,6 +202,15 @@ jobs:
               echo ""
             fi
 
+            if [ "${{ steps.validate_slice.outcome }}" = "failure" ]; then
+              echo "### Slice Validation Failed (custom g-code expansion)"
+              echo ""
+              echo '```'
+              head -c 30000 ${{ runner.temp }}/validate_slice.log || echo "No output captured"
+              echo '```'
+              echo ""
+            fi
+
             if [ "${{ steps.validate_filament_subtypes.outcome }}" = "failure" ]; then
               echo "### Filament Subtype Validation Failed"
               echo ""
@@ -216,15 +220,6 @@ jobs:
               echo ""
             fi
 
-            if [ "${{ steps.validate_preset_references.outcome }}" = "failure" ]; then
-              echo "### BBL/Qidi Preset Reference Validation Failed"
-              echo ""
-              echo '```'
-              head -c 30000 ${{ runner.temp }}/validate_preset_references.log || echo "No output captured"
-              echo '```'
-              echo ""
-            fi
-
             if [ "${{ steps.validate_custom.outcome }}" = "failure" ]; then
               echo "### Custom Preset Validation Failed"
               echo ""
@@ -247,7 +242,7 @@ jobs:
           retention-days: 1
 
       - name: Fail if any check failed
-        if: ${{ always() && (steps.extra_json_check.outcome == 'failure' || steps.validate_system.outcome == 'failure' || steps.validate_filament_subtypes.outcome == 'failure' || steps.validate_preset_references.outcome == 'failure' || steps.validate_custom.outcome == 'failure') }}
+        if: ${{ always() && (steps.extra_json_check.outcome == 'failure' || steps.validate_system.outcome == 'failure' || steps.validate_slice.outcome == 'failure' || steps.validate_filament_subtypes.outcome == 'failure' || steps.validate_custom.outcome == 'failure') }}
         run: |
           echo "One or more profile checks failed. See above for details."
           exit 1