Merge branch 'main' into feat/plugin-feature

Resolve five conflicts, all of which needed both sides rather than a pick:

- BackgroundSlicingProcess: ours was a pure tabs->spaces reformat of base, so
  keep main's per-filament volume/nozzle map read-back (its only change here).
- GUI_App: main's #12506 else-if attached to an `if` this branch deleted;
  re-expressed onto the same-agent early-return path (the agent factory caches
  per id, so pointer equality is the same predicate).
- MainFrame: both sides relocated Sync Presets independently; keep main's
  push_notification plus the branch's Plugins menu items.
- Tab: the "TODO: Orca: Support hybrid" blocks were unchanged base, not a branch
  decision; take main's enabled Hybrid to match the already auto-merged siblings.
- test_config: union of both sides' cases (6 plugin + 9 multi-nozzle).

build_release_macos.sh

@@ -59,7 +59,7 @@ while getopts ":dpa:snt:xbc:i:1Tuh" opt; do
         echo "   -c: Set CMake build configuration, default is Release"
         echo "   -i: Add a prefix to ignore during CMake dependency discovery (repeatable), defaults to /opt/local:/usr/local:/opt/homebrew"
         echo "   -1: Use single job for building"
-        echo "   -T: Build and run tests"
+        echo "   -T: Build and run tests (set ORCA_TESTS_BUILD_ONLY=1 to build without running)"
         exit 0
         ;;
     * )
@@ -248,13 +248,10 @@ function build_slicer() {
             cmake --build . --config "$BUILD_CONFIG" --target "$SLICER_BUILD_TARGET"
         )
 
-        if [ "1." == "$BUILD_TESTS". ]; then
-            echo "Running tests for $_ARCH..."
-            (
-                set -x
-                cd "$PROJECT_BUILD_DIR"
-                ctest --build-config "$BUILD_CONFIG" --output-on-failure
-            )
+        # -T also runs the tests; ORCA_TESTS_BUILD_ONLY=1 builds them without
+        # running, so CI can build here and run them in a dedicated job.
+        if [ "1." == "$BUILD_TESTS". ] && [ "1." != "$ORCA_TESTS_BUILD_ONLY". ]; then
+            "$PROJECT_DIR/scripts/run_unit_tests.sh" "build/$_ARCH/tests" "$BUILD_CONFIG"
         fi
 
         echo "Verify localization with gettext..."