QA: Add Fedora Rawhide build container

Adds a Docker-based QA environment using fedora:rawhide to catch
toolchain-specific build failures like the GCC 15 linker issue.
Follows the same pattern as the existing ARM64 QA container with
build-image, build, test, and shell commands.

qa/fedora-rawhide/Dockerfile

@@ -0,0 +1,41 @@
+FROM fedora:rawhide
+
+RUN dnf install -y --setopt=install_weak_deps=False \
+    cmake \
+    ninja-build \
+    gcc-c++ \
+    swig \
+    boost-devel \
+    glew-devel \
+    glm-devel \
+    gtk3-devel \
+    libcurl-devel \
+    libgit2-devel \
+    libngspice-devel \
+    ngspice \
+    libsecret-devel \
+    libzstd-devel \
+    nng-devel \
+    opencascade-devel \
+    protobuf-compiler \
+    protobuf-devel \
+    unixODBC-devel \
+    wxGTK-devel \
+    zlib-devel \
+    python3-devel \
+    python3-wxpython4 \
+    cairo-devel \
+    pixman-devel \
+    harfbuzz-devel \
+    fontconfig-devel \
+    freetype-devel \
+    glib2-devel \
+    poppler-glib-devel \
+    wayland-devel \
+    wayland-protocols-devel \
+    libspnav-devel \
+    json-devel \
+    ccache \
+    && dnf clean all
+
+WORKDIR /src

qa/fedora-rawhide/build-and-test.sh

@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+SRC_DIR="$(cd "$SCRIPT_DIR/../.." && pwd)"
+IMAGE_NAME="kicad-fedora-rawhide-qa"
+CONTAINER_BUILD_DIR="/src/build/fedora-rawhide"
+
+QA_TESTS=(kimath sexpr common eeschema pcbnew pns_regressions gerbview kicad2step spice api)
+
+usage() {
+    echo "Usage: $0 [build-image|build|test|shell|all]"
+    echo ""
+    echo "Commands:"
+    echo "  build-image   Build the Fedora Rawhide Docker image"
+    echo "  build         Configure and build QA tests inside container"
+    echo "  test          Run QA tests inside container"
+    echo "  shell         Open interactive shell in container"
+    echo "  all           Build image, build tests, run tests (default)"
+    exit 0
+}
+
+docker_run() {
+    docker run --rm \
+        -v "${SRC_DIR}:/src:rw" \
+        -w /src \
+        -e CCACHE_DIR=/src/build/fedora-rawhide-ccache \
+        "$IMAGE_NAME" \
+        bash -c "$1"
+}
+
+cmd_build_image() {
+    echo "=== Building Fedora Rawhide Docker image ==="
+    docker build -t "$IMAGE_NAME" "$SCRIPT_DIR"
+}
+
+cmd_build() {
+    echo "=== Configuring and building QA tests for Fedora Rawhide ==="
+    docker_run "
+        mkdir -p ${CONTAINER_BUILD_DIR} && cd ${CONTAINER_BUILD_DIR} &&
+        cmake -G Ninja \
+            -DCMAKE_BUILD_TYPE=QABUILD \
+            -DKICAD_BUILD_QA_TESTS=ON \
+            -DKICAD_SCRIPTING=OFF \
+            -DKICAD_SCRIPTING_WXPYTHON=OFF \
+            -DKICAD_BUILD_I18N=OFF \
+            -DKICAD_UPDATE_CHECK=OFF \
+            -DKICAD_USE_CMAKE_FINDPROTOBUF=ON \
+            /src 2>&1 | tee cmake_log.txt &&
+        echo '=== CMake configuration complete ===' &&
+        ninja 2>&1 | tee build_log.txt
+    "
+}
+
+cmd_test() {
+    echo "=== Running QA tests for Fedora Rawhide ==="
+    local failed=()
+
+    for t in "${QA_TESTS[@]}"; do
+        echo "--- Running qa_${t} ---"
+
+        if docker_run "cd ${CONTAINER_BUILD_DIR}/qa && ctest -R qa_${t} --output-on-failure 2>&1"; then
+            echo "--- qa_${t}: PASSED ---"
+        else
+            echo "--- qa_${t}: FAILED ---"
+            failed+=("$t")
+        fi
+    done
+
+    echo ""
+    echo "=== Test Summary ==="
+
+    if [ ${#failed[@]} -eq 0 ]; then
+        echo "All tests passed."
+    else
+        echo "Failed tests: ${failed[*]}"
+        exit 1
+    fi
+}
+
+cmd_shell() {
+    echo "=== Opening shell in Fedora Rawhide container ==="
+    docker run --rm -it \
+        -v "${SRC_DIR}:/src:rw" \
+        -w /src \
+        "$IMAGE_NAME" \
+        bash
+}
+
+CMD="${1:-all}"
+
+case "$CMD" in
+    build-image) cmd_build_image ;;
+    build)       cmd_build ;;
+    test)        cmd_test ;;
+    shell)       cmd_shell ;;
+    all)         cmd_build_image && cmd_build && cmd_test ;;
+    -h|--help)   usage ;;
+    *)           echo "Unknown command: $CMD"; usage ;;
+esac