Merge pull request #1003 from qelectrotech/revert-986-no-sqlite

Revert "fix: harden project database export"
2026-09-23 18:14:13 +02:00 · 2026-09-23 13:51:07 +02:00 · 2026-09-23 13:50:49 +02:00 · 2026-09-23 06:40:53 +02:00 · 2026-09-23 03:22:00 +02:00 · 2026-09-23 13:16:48 +12:00
156 changed files with 15091 additions and 995 deletions
@@ -1 +0,0 @@
-*.qch filter=lfs diff=lfs merge=lfs -text
@@ -1,67 +0,0 @@
-name: Auto-build doxygen docs
-on:
-  push:
-    tags:
-       - '**'
-   
-  
-  
-jobs:  
-  doxygen:
-    permissions:
-       contents: write    
-    runs-on: ubuntu-latest
-    steps:
-    - uses: actions/checkout@v4
-      with:
-        submodules: 'recursive'
-        show-progress: ''
-    - name: Setup and run doxygen
-      run: sudo apt update && sudo apt install doxygen graphviz qhelpgenerator-qt5 -y
-    - name: Set up Git LFS
-      run: |
-          git lfs install
-          git lfs track "*.qch"  
-    - name: Run doxygen
-      run: doxygen Doxyfile
-    - name: Create Pull Request
-      uses: peter-evans/create-pull-request@v8
-      with:
-        token: ${{ secrets.MR_TOKEN }}
-        commit-message: update QCH file
-        committer: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
-        title: Update QCH Help file
-        body: |
-         - Updating QT Help file following commit ${{ github.sha }}.
-         - Auto-generated by [create-pull-request][1]
-
-         [1]: https://github.com/peter-evans/create-pull-request
-        branch: update-qch
-        labels: | 
-          qch
-          cicd
-        delete-branch: true
-        add-paths: doc/*.qch
-    - uses: actions/upload-pages-artifact@v3
-      with: 
-       path: ${{ github.workspace }}/doc/html/
-  deploy:
-    # Add a dependency to the build job
-    needs: doxygen
-
-    # Grant GITHUB_TOKEN the permissions required to make a Pages deployment
-    permissions:
-      pages: write      # to deploy to Pages
-      id-token: write   # to verify the deployment originates from an appropriate source
-
-    # Deploy to the github-pages environment
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
-
-    # Specify runner + deployment step
-    runs-on: ubuntu-latest
-    steps:
-      - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4 # or specific "vX.X.X" version tag for this action
@@ -28,7 +28,7 @@ jobs:
          DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
            ca-certificates build-essential cmake ninja-build git pkg-config \
            qt6-base-dev qt6-base-private-dev qt6-tools-dev qt6-tools-dev-tools \
-            libqt6svg6-dev libqt6sql6-sqlite libsqlite3-dev libcups2-dev \
+            libqt6svg6-dev libqt6sql6-sqlite libcups2-dev \
            libxkbcommon-x11-0 \
            xvfb openbox xdotool x11-utils
          # extra-cmake-modules and the KF6 libraries are installed rather than
@@ -53,7 +53,9 @@ jobs:
          git config --global --add safe.directory "$GITHUB_WORKSPACE"
          cmake -B build -G Ninja \
            -DCMAKE_BUILD_TYPE=Debug \
-            -DQT_VERSION_MAJOR=6
+            -DQT_VERSION_MAJOR=6 \
+            -DCMAKE_POLICY_VERSION_MINIMUM=3.5 \
+            -DQET_EXPORT_PROJECT_DB=ON 

      - name: Build
        run: cmake --build build --parallel $(nproc)
@@ -49,7 +49,6 @@ jobs:
            mingw-w64-ucrt-x86_64-qt6-tools
            mingw-w64-ucrt-x86_64-qt6-translations
            mingw-w64-ucrt-x86_64-qt6-pdf
-            mingw-w64-ucrt-x86_64-sqlite3
            mingw-w64-ucrt-x86_64-pkg-config
            mingw-w64-ucrt-x86_64-kwidgetsaddons
            mingw-w64-ucrt-x86_64-kcoreaddons
@@ -122,8 +121,7 @@ jobs:
            -DQET_EXPORT_PROJECT_DB=ON \
            -DCMAKE_C_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
            -DCMAKE_CXX_COMPILER_LAUNCHER=/ucrt64/bin/ccache \
-            -DSQLite3_INCLUDE_DIR=/ucrt64/include \
-            -DSQLite3_LIBRARY=/ucrt64/lib/libsqlite3.dll.a \
+
            ..
          ninja -j"$NPROC"

@@ -196,13 +194,6 @@ jobs:
          cp /ucrt64/bin/libgcc_s_seh-1.dll  "$BIN/"
          cp /ucrt64/bin/libstdc++-6.dll      "$BIN/"
          cp /ucrt64/bin/libwinpthread-1.dll  "$BIN/"
-          SQLITE=$(find /ucrt64/bin -name "libsqlite3*.dll" | head -1)
-          if [ -n "$SQLITE" ]; then
-            cp "$SQLITE" "$BIN/"
-            echo "SQLite3 copied: $(basename $SQLITE)"
-          else
-            echo "WARNING: libsqlite3 not found in /ucrt64/bin/"
-          fi

          cp "$GITHUB_WORKSPACE/build-aux/windows/QET64.nsi"              "$NSIS_ROOT/"
          cp "$GITHUB_WORKSPACE/build-aux/windows/lang_extra.nsh"         "$NSIS_ROOT/"
@@ -59,17 +59,41 @@ jobs:

      # ----------------------------------------------------------------
      # 2. Download the portable artifact for this flavor
+      #
+      #    Wrapped in nick-fields/retry: actions/download-artifact@v8 has
+      #    shown repeated "Artifact download failed after 5 retries"
+      #    failures on this cross-workflow download (via run-id) — not a
+      #    real content/digest problem, just flaky Azure blob delivery.
+      #    Two separate occurrences observed within days of each other
+      #    (different artifact IDs/digests, same failure signature), each
+      #    one enough to fail build-msi outright and block the rest of the
+      #    pipeline. Retrying the whole download 3x is cheap insurance.
+      #    Switched to `gh run download` here because nick-fields/retry
+      #    can only retry a shell command, not re-invoke a `uses:` step.
      # ----------------------------------------------------------------
      - name: Download portable artifact
-        uses: actions/download-artifact@v8
+        uses: nick-fields/retry@v3
        with:
-          name: ${{ matrix.portable_artifact }}
-          path: artifact\files
-          # workflow_run => use the triggering run's ID
-          # workflow_dispatch => use input run_id if provided, otherwise current run
-          run-id: ${{ github.event.workflow_run.id || github.event.inputs.run_id || github.run_id }}
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          repository: ${{ github.repository }}
+          timeout_minutes: 10
+          max_attempts: 3
+          retry_wait_seconds: 30
+          shell: pwsh
+          command: |
+            if (Test-Path "artifact\files") { Remove-Item -Recurse -Force "artifact\files" }
+            New-Item -ItemType Directory -Force -Path "artifact\files" | Out-Null
+
+            $runId = "${{ github.event.workflow_run.id || github.event.inputs.run_id || github.run_id }}"
+            gh run download $runId `
+              --repo "${{ github.repository }}" `
+              --name "${{ matrix.portable_artifact }}" `
+              --dir "artifact\files"
+
+            if ($LASTEXITCODE -ne 0) {
+              Write-Error "gh run download failed (exit $LASTEXITCODE)"
+              exit $LASTEXITCODE
+            }
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      # ----------------------------------------------------------------
      # 3. Extract version
@@ -336,7 +360,13 @@ jobs:
          if-no-files-found: error

      - name: Delete old nightly .msi asset
-        if: always()
+        # Only run if a new MSI actually exists in dist/ — otherwise the old
+        # (still working) nightly .msi would be deleted without anything to
+        # replace it, leaving the nightly release with no MSI at all until
+        # the next successful build (see windows-msi-pipeline notes,
+        # run 35694391567: an upstream artifact-download failure meant
+        # dist\*.msi never existed for that run).
+        if: always() && hashFiles('dist/*.msi') != ''
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REPO: ${{ github.repository }}
@@ -381,7 +411,20 @@ jobs:
  deploy-pages:
    needs: build-msi
    runs-on: ubuntu-latest
-    if: always() && needs.build-msi.result == 'success'
+    # Regenerate the page whenever the MSI job actually ran (success OR
+    # packaging/signing failure) — not only on full success.
+    # generate-page.py queries the published assets on the "nightly"
+    # release itself (line 407: `gh release view nightly --json assets`),
+    # so it already handles a missing MSI natively (empty MSI_NAME -> no
+    # MSI button on the page). The page only needs the exe/zip already
+    # published by windows-build.yml, independent of the MSI's fate.
+    # Only "skipped"/"cancelled" are excluded: if build-msi never ran at
+    # all (e.g. Windows Build itself failed), there is nothing new to
+    # publish and regenerating the page would be pointless.
+    if: >
+      always() &&
+      needs.build-msi.result != 'skipped' &&
+      needs.build-msi.result != 'cancelled'
    permissions:
      contents: write
      pages: write
@@ -1,5 +1,7 @@
 *.snap
 .flatpak-builder
+__pycache__/
+*.pyc
 # Qt build output
 *.user
 # doxygen Doxyfile output
@@ -8,3 +10,11 @@ doc/*
 QElectroTech.tag
 !doc/doc-utils
 lang/*.qm
+
+# -- IDE settings/intermediate files --
+# zed
+.zed
+.cache
+
+# VS Code
+.vscode
@@ -113,7 +113,9 @@ if(Backtrace_FOUND)
    include_directories(${Backtrace_INCLUDE_DIRS})
    add_compile_definitions(QET_CRASH_BACKTRACE)
 else()
-    message(STATUS "backtrace() not available: crash dumps will carry the log ring without a backtrace")
+    message(STATUS
+        "backtrace() not available: crash dumps will carry the log ring "
+        "without a backtrace")
 endif()

 find_package(SQLite3 REQUIRED)
@@ -316,7 +318,6 @@ target_include_directories(
    ${QET_DIR}/sources/NameList
    ${QET_DIR}/sources/NameList/ui
    ${QET_DIR}/sources/utils
-    ${QET_DIR}/pugixml/src
    ${QET_DIR}/sources/dataBase
    ${QET_DIR}/sources/dataBase/ui
    ${QET_DIR}/sources/factory/ui
@@ -27,18 +27,12 @@ git submodule update --init --recursive
 | C++17 compiler | required | GCC or Clang on Unix-like platforms; MSVC or MinGW-w64 g++ on Windows — see [Choosing a compiler](#3-choosing-a-compiler-unix) / [Building on Windows](#6-building-on-windows-msvc--mingw) |
 | Qt6 base + widgets | required | |
 | Qt6 **GuiPrivate** headers | required | needed for clickable PDF hyperlinks; **hard build failure** at CMake generate time if missing, see below |
-| SQLite3 | required | used by the nomenclature/summary database |
 | Qt Linguist tools (`lrelease`) | required | compiles the tracked `.ts` files into `.qm` as part of every normal build |
 | pugixml | handled automatically | fetched and built via CMake FetchContent if not already present on the system — see [pugixml](#8-pugixml) below |
 | Qt Test module | required if building tests | `PACKAGE_TESTS` is `ON` by default; QtTest ships as part of the base Qt6 dev packages listed below on every platform, no extra package needed |
 | KDE Frameworks (KF6) | optional | see [Building without KDE Frameworks](#9-building-without-kde-frameworks) |
 | QtPdf module | optional | see [PDF page import](#7-pdf-page-import-qtpdf) |

-A note on CMake versions: the project declares a minimum of 3.5 but is
-routinely built with much newer releases; if your CMake is older than 4.3 it
-simply won't have the newer `SQLite3::SQLite3` target name, which the build
-script compensates for automatically. There is nothing you need to do either
-way.

 ## 3. Building (out-of-source build)

@@ -106,7 +100,7 @@ the closest match.
 sudo apt install \
    build-essential cmake ninja-build git \
    qt6-base-dev qt6-base-private-dev qt6-tools-dev qt6-tools-dev-tools \
-    libsqlite3-dev \
+
    libkf6coreaddons-dev libkf6widgetsaddons-dev
 ```

@@ -138,7 +132,6 @@ sudo apt install libpugixml-dev
 sudo dnf install \
    cmake gcc-c++ git \
    qt6-qtbase-devel qt6-qtbase-private-devel qt6-qttools-devel \
-    sqlite-devel \
    kf6-kcoreaddons-devel kf6-kwidgetsaddons-devel
 ```

@@ -155,11 +148,10 @@ Optional, for a system pugixml: `sudo dnf install pugixml-devel`.
 pkg install \
    cmake git \
    qt6-base qt6-tools \
-    sqlite3 \
    kf6-kcoreaddons kf6-kwidgetsaddons
 ```

-(from ports: `devel/qt6-base`, `devel/qt6-tools`, `databases/sqlite3`,
+(from ports: `devel/qt6-base`, `devel/qt6-tools`,
 `devel/kf6-kcoreaddons`, `x11-toolkits/kf6-kwidgetsaddons`.) Qt6's
 `GuiPrivate` headers ship as part of `qt6-base` on FreeBSD, no separate
 package is needed. `QtPdf` is not packaged on FreeBSD at the time of writing
@@ -175,7 +167,7 @@ Optional, for a system pugixml: `pkg install pugixml` (`devel/pugixml`).
 Using [Homebrew](https://brew.sh):

 ```sh
-brew install cmake qt sqlite ninja
+brew install cmake qt ninja
 ```

 Homebrew's `qt` formula is Qt6 and includes the private headers, so no
@@ -193,7 +185,7 @@ Optional, for a system pugixml: `brew install pugixml`.

 See [Building on Windows](#6-building-on-windows-msvc--mingw) below — the
 package sources differ enough from the Unix-like platforms above (no system
-package manager, SQLite3 and Qt aren't provided the same way) that it gets
+package manager and Qt aren't provided the same way) that it gets
 its own section.

 ## 5. pugixml
@@ -215,7 +207,7 @@ on Debian/Ubuntu, `pugixml-devel` on Fedora).
 Both toolchains QET's CMake build targets on Windows are covered here:
 **MSVC** (Visual Studio 2019/2022) and **MinGW-w64** (gcc). Unlike the
 Unix-like platforms above, there's no single system package manager, so
-Qt, SQLite3 and (optionally) KDE Frameworks each need to be sourced
+Qt and (optionally) KDE Frameworks each need to be sourced
 separately per toolchain.

 One piece of good news either way: unlike Debian/Fedora, the official Qt
@@ -236,11 +228,7 @@ normally use `-DBUILD_WITH_KF=OFF` (see the
 1. Install Visual Studio with the "Desktop development with C++" workload,
   and install Qt6 for MSVC (e.g. the `msvc2019_64` or `msvc2022_64` kit)
   via the [Qt Online Installer](https://www.qt.io/download-qt-installer).
-2. Get SQLite3 — the simplest route is [vcpkg](https://vcpkg.io):
-   ```bat
-   vcpkg install sqlite3:x64-windows
-   ```
-3. Configure and build from an "x64 Native Tools Command Prompt for VS":
+2. Configure and build from an "x64 Native Tools Command Prompt for VS":
   ```bat
   mkdir build && cd build
   cmake .. -G "Visual Studio 17 2022" -A x64 ^
@@ -271,15 +259,29 @@ mkdir build && cd build
 cmake .. -G Ninja -DBUILD_WITH_KF=OFF -DCMAKE_BUILD_TYPE=Release
 cmake --build .
 ```
+
+If `libbacktrace` is installed in your MSYS2 environment, pass the following
+cached CMake variables when configuring. They are only necessary in that
+case, because `FindBacktrace` needs them to locate the library:
+
+```sh
+cmake .. -G Ninja -DBUILD_WITH_KF=OFF -DCMAKE_BUILD_TYPE=Release \
+    -DBacktrace_INCLUDE_DIR=/c/msys64/clang64/include \
+    -DBacktrace_LIBRARY=/c/msys64/clang64/lib/libbacktrace.a
+```
+
+`Backtrace_INCLUDE_DIR` must point to the directory containing `backtrace.h`,
+and `Backtrace_LIBRARY` to the `libbacktrace.a` file. The paths above are the
+usual locations for the MSYS2 `clang64` environment; adjust them if your
+installation uses a different prefix.
+
 (KF6 isn't packaged in MSYS2 either, hence `-DBUILD_WITH_KF=OFF` again.)

 Using the Qt Online Installer's bundled MinGW kit instead: point
 `CMAKE_PREFIX_PATH` at that kit (e.g. `C:\Qt\6.x.x\mingw_64`) and make sure
 its bundled `g++.exe` comes first on `PATH`, or pass
 `-DCMAKE_C_COMPILER`/`-DCMAKE_CXX_COMPILER` explicitly so CMake doesn't pick
-up a different MinGW installation. SQLite3 still has to come from elsewhere
-in this path — vcpkg with a `mingw`-flavoured triplet, or MSYS2's package as
-above.
+up a different MinGW installation.

 ## 7. Qt6 private headers (mandatory)

@@ -71,7 +71,6 @@ parts:
    source: .
    stage-packages:
      - git
-      - sqlite3
      - xdg-user-dirs
      - libqt6qml6
      # libxcb-cursor0 workaround was needed against the Qt5/KF5 core22 content
@@ -82,7 +81,7 @@ parts:
      - git
      - cmake
      - ninja-build
-      - libsqlite3-dev
+
      - qt6-tools-dev
      - qt6-base-private-dev
      - qt6-declarative-dev
@@ -23,8 +23,31 @@ if(BUILD_WITH_KF)

  if(BUILD_KF)

-    if(NOT DEFINED KF_GIT_TAG)
-      # this is a more or less random version, taken as an conservative approach
+    # v6.10.0 is a more or less random version, taken as an conservative
+    # approach. Pinned to the commits v6.10.0 points at, not to the tags
+    # themselves; see the note in fetch_pugixml.cmake. Each module lives in its
+    # own repository, so the same v6.10.0 release is a different commit in
+    # each.
+    #
+    # KDE uses annotated tags, so "git ls-remote <repo> 'refs/tags/v6.10.0*'"
+    # prints two hashes per module: refs/tags/v6.10.0 is the tag object (the
+    # tagger, the date and the tag message) and refs/tags/v6.10.0^{} is the
+    # commit that object points at. The hashes below are the "^{}" ones, i.e.
+    # the commits. Lightweight tags, such as pugixml's v1.15 and
+    # SingleApplication's v3.2.0, have no tag object and print only the
+    # commit line.
+    set(KF_ECM_GIT_COMMIT            7dd28cc56c339c3f8fb356f7c53c0e8f61433d81) # v6.10.0
+    set(KF_KCOREADDONS_GIT_COMMIT    c569f974dab24b4784ad186a3db4b76b2fa36612) # v6.10.0
+    set(KF_KWIDGETSADDONS_GIT_COMMIT 1abbed8a280d6626c59fb197f2c4667d2b1e7445) # v6.10.0
+
+    if(DEFINED KF_GIT_TAG)
+      # Explicit override: -DKF_GIT_TAG=<ref> selects one ref for all three
+      # modules, unpinned, exactly as it did before.
+      set(KF_ECM_GIT_COMMIT            ${KF_GIT_TAG})
+      set(KF_KCOREADDONS_GIT_COMMIT    ${KF_GIT_TAG})
+      set(KF_KWIDGETSADDONS_GIT_COMMIT ${KF_GIT_TAG})
+    else()
+      # Keep KF_GIT_TAG defined: define_definitions.cmake reports it.
      set(KF_GIT_TAG v6.10.0)
    endif()
    # using a function in order to limit the scope of the variables
@@ -53,19 +76,19 @@ if(BUILD_WITH_KF)
      FetchContent_Declare(
        ecm
        GIT_REPOSITORY https://invent.kde.org/frameworks/extra-cmake-modules.git
-        GIT_TAG        ${KF_GIT_TAG})
+        GIT_TAG        ${KF_ECM_GIT_COMMIT})
      FetchContent_MakeAvailable(ecm)

      FetchContent_Declare(
        kcoreaddons
        GIT_REPOSITORY https://invent.kde.org/frameworks/kcoreaddons.git
-        GIT_TAG        ${KF_GIT_TAG})
+        GIT_TAG        ${KF_KCOREADDONS_GIT_COMMIT})
      FetchContent_MakeAvailable(kcoreaddons)

      FetchContent_Declare(
        kwidgetsaddons
        GIT_REPOSITORY https://invent.kde.org/frameworks/kwidgetsaddons.git
-        GIT_TAG        ${KF_GIT_TAG})
+        GIT_TAG        ${KF_KWIDGETSADDONS_GIT_COMMIT})
      FetchContent_MakeAvailable(kwidgetsaddons)
    endfunction()
    qet_make_kf_available()
@@ -22,10 +22,51 @@ option(BUILD_PUGIXML "Build pugixml library, use system one otherwise" YES)

 if(BUILD_PUGIXML)

+  # Pinned to the commit v1.15 points at, not to the tag itself.
+  #
+  # A git tag is only a named pointer to a commit, and anyone with push access
+  # to the upstream repository can move it (git push --force) to any other
+  # commit. FetchContent fetches whatever the tag points at when the build
+  # runs, so if a maintainer account or CI token is compromised, the attacker
+  # can retarget a well-known release tag to malicious code: every fresh build
+  # of QElectroTech then compiles it, while nothing changes in this repository
+  # and the tag name still looks correct. A commit hash cannot be moved, because
+  # it is derived from the content: different code always has a different hash.
+  #
+  # This attack has been used in the wild:
+  # - March 2025, tj-actions/changed-files (CVE-2025-30066): tags v1 through
+  #   v45.0.7 were retargeted to a commit that dumped CI secrets into build
+  #   logs, affecting more than 23,000 repositories.
+  # - March 2026, aquasecurity/trivy-action (CVE-2026-33634): 76 of 77
+  #   version tags were force-pushed to a credential stealer and stayed
+  #   malicious for about 12 hours.
+  # Both were GitHub Actions rather than CMake dependencies, but the mechanism
+  # is the same one FetchContent relies on here: resolving a git tag at build
+  # time.
+  #
+  # To upgrade, look up the commit the new tag points at with
+  # git ls-remote <repo> 'refs/tags/<tag>*', check that it is the release you
+  # expect, and update both the hash and the trailing tag comment.
+  #
+  # How many lines that prints depends on which of the two kinds of tag
+  # upstream created:
+  # - A lightweight tag is nothing but a ref pointing straight at the commit,
+  #   so ls-remote prints a single line, "refs/tags/<tag>", and its hash is
+  #   the commit to pin. pugixml tags this way, which is why the v1.15 hash
+  #   below is what "git ls-remote ... refs/tags/v1.15" reports directly;
+  #   SingleApplication (v3.2.0) does the same.
+  # - An annotated tag is a git object in its own right, carrying a tagger,
+  #   a date, a message and optionally a GPG signature, and pointing at the
+  #   commit. ls-remote then prints two lines: "refs/tags/<tag>" is the tag
+  #   object and "refs/tags/<tag>^{}" is that object dereferenced, i.e. the
+  #   commit. The KDE Frameworks modules tag this way, so for them it is the
+  #   "^{}" hash that belongs in the pin; the other hash identifies the tag
+  #   object itself, which is not the source revision and changes whenever
+  #   upstream re-creates the tag, even over the very same commit.
  FetchContent_Declare(
    pugixml
    GIT_REPOSITORY https://github.com/zeux/pugixml.git
-    GIT_TAG        v1.15)
+    GIT_TAG        ee86beb30e4973f5feffe3ce63bfa4fbadf72f38) # v1.15
  set(PUGIXML_INSTALL OFF CACHE INTERNAL "")
  FetchContent_MakeAvailable(pugixml)
 else()
@@ -31,9 +31,15 @@ if(EXISTS "${CMAKE_SOURCE_DIR}/SingleApplication/CMakeLists.txt")
  set(FETCHCONTENT_SOURCE_DIR_SINGLEAPPLICATION "${CMAKE_SOURCE_DIR}/SingleApplication")
 endif()

+# Pinned to the commit v3.2.0 points at, not to the tag itself; see the note in
+# fetch_pugixml.cmake. v3.2.0 is a lightweight tag, a ref pointing straight at
+# the commit, so "git ls-remote <repo> refs/tags/v3.2.0" prints that commit and
+# nothing else. An annotated tag, as KDE uses in fetch_kdeaddons.cmake, would
+# print the tag object under refs/tags/v3.2.0 as well, with the commit on the
+# refs/tags/v3.2.0^{} line.
 FetchContent_Declare(
  SingleApplication
  GIT_REPOSITORY https://github.com/itay-grudev/SingleApplication.git
-  GIT_TAG        v3.2.0)
+  GIT_TAG        aede311d28d20179216c5419b581087be2a8409f) # v3.2.0
 set(QT_DEFAULT_MAJOR_VERSION 6)
 FetchContent_MakeAvailable(SingleApplication)
@@ -62,7 +62,9 @@ if(WIN32)
  # puts the .qm files (see build-aux/windows/QElectroTech.wxs and the
  # windows-build workflow), and what the shortcuts pass as --lang-dir.
  set(QET_LANG_PATH               "lang/")
+  set(QET_EXAMPLES_PATH           "examples/")
  set(QET_LICENSE_PATH            "./")
+  set(QET_ICONS_PATH              "icons/hicolor/")
  # Liste des ressources Windows
 #RC_FILE = qelectrotech.rc
 endif()
@@ -248,8 +248,12 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/qet.h
  ${QET_DIR}/sources/qeticons.cpp
  ${QET_DIR}/sources/qeticons.h
+  ${QET_DIR}/sources/palettegraphicsview.cpp
+  ${QET_DIR}/sources/palettegraphicsview.h
  ${QET_DIR}/sources/qetpalette.cpp
  ${QET_DIR}/sources/qetpalette.h
+  ${QET_DIR}/sources/qetstyle.cpp
+  ${QET_DIR}/sources/qetstyle.h
  ${QET_DIR}/sources/qetinformation.cpp
  ${QET_DIR}/sources/qetinformation.h
  ${QET_DIR}/sources/qetmainwindow.cpp
@@ -308,6 +312,8 @@ set(QET_SRC_FILES

  ${QET_DIR}/sources/dataBase/projectdatabase.cpp
  ${QET_DIR}/sources/dataBase/projectdatabase.h
+  ${QET_DIR}/sources/dataBase/sqlreadonly.cpp
+  ${QET_DIR}/sources/dataBase/sqlreadonly.h

  ${QET_DIR}/sources/dataBase/ui/elementquerywidget.cpp
  ${QET_DIR}/sources/dataBase/ui/elementquerywidget.h
@@ -434,6 +440,8 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/ElementsCollection/elementcollectionhandler.h
  ${QET_DIR}/sources/ElementsCollection/elementcollectionitem.cpp
  ${QET_DIR}/sources/ElementsCollection/elementcollectionitem.h
+  ${QET_DIR}/sources/ElementsCollection/elementpreviewdelegate.cpp
+  ${QET_DIR}/sources/ElementsCollection/elementpreviewdelegate.h
  ${QET_DIR}/sources/ElementsCollection/elementscollectionmodel.cpp
  ${QET_DIR}/sources/ElementsCollection/elementscollectionmodel.h
  ${QET_DIR}/sources/ElementsCollection/elementscollectionwidget.cpp
@@ -501,10 +509,6 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/PropertiesEditor/propertieseditorwidget.cpp
  ${QET_DIR}/sources/PropertiesEditor/propertieseditorwidget.h

-  ${QET_DIR}/pugixml/src/pugiconfig.hpp
-  ${QET_DIR}/pugixml/src/pugixml.cpp
-  ${QET_DIR}/pugixml/src/pugixml.hpp
-
  ${QET_DIR}/sources/qetgraphicsitem/conductor.cpp
  ${QET_DIR}/sources/qetgraphicsitem/conductor.h
  ${QET_DIR}/sources/qetgraphicsitem/conductortextitem.cpp
@@ -701,6 +705,8 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/ui/conductorpropertiesdialog.h
  ${QET_DIR}/sources/ui/conductorcolortoolbutton.cpp
  ${QET_DIR}/sources/ui/conductorcolortoolbutton.h
+  ${QET_DIR}/sources/ui/diagrambgcolorbutton.cpp
+  ${QET_DIR}/sources/ui/diagrambgcolorbutton.h
  ${QET_DIR}/sources/ui/conductorpropertieswidget.cpp
  ${QET_DIR}/sources/ui/conductorpropertieswidget.h
  ${QET_DIR}/sources/ui/configsaveloaderwidget.cpp
@@ -717,6 +723,8 @@ set(QET_SRC_FILES
  ${QET_DIR}/sources/ui/backupdialog.h
  ${QET_DIR}/sources/ui/dialogwaiting.cpp
  ${QET_DIR}/sources/ui/dialogwaiting.h
+  ${QET_DIR}/sources/ui/duplicateoffsetdialog.cpp
+  ${QET_DIR}/sources/ui/duplicateoffsetdialog.h
  ${QET_DIR}/sources/ui/dynamicelementtextitemeditor.cpp
  ${QET_DIR}/sources/ui/dynamicelementtextitemeditor.h
  ${QET_DIR}/sources/ui/dynamicelementtextmodel.cpp
@@ -0,0 +1,29 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" width="128" height="128">
+  <!-- keyboard body with a lighter top edge -->
+  <rect x="6" y="30" width="116" height="68" rx="8" fill="#31363b"/>
+  <rect x="6" y="30" width="116" height="34" rx="8" fill="#4d4d4d"/>
+  <rect x="6" y="46" width="116" height="18" fill="#31363b"/>
+  <!-- key rows -->
+  <g fill="#eff0f1">
+    <rect x="14" y="38" width="8" height="8" rx="1.5"/><rect x="24" y="38" width="8" height="8" rx="1.5"/>
+    <rect x="34" y="38" width="8" height="8" rx="1.5"/><rect x="44" y="38" width="8" height="8" rx="1.5"/>
+    <rect x="54" y="38" width="8" height="8" rx="1.5"/><rect x="64" y="38" width="8" height="8" rx="1.5"/>
+    <rect x="74" y="38" width="8" height="8" rx="1.5"/><rect x="84" y="38" width="8" height="8" rx="1.5"/>
+    <rect x="94" y="38" width="8" height="8" rx="1.5"/><rect x="104" y="38" width="10" height="8" rx="1.5"/>
+    <rect x="14" y="50" width="12" height="8" rx="1.5"/><rect x="28" y="50" width="8" height="8" rx="1.5"/>
+    <rect x="38" y="50" width="8" height="8" rx="1.5"/><rect x="48" y="50" width="8" height="8" rx="1.5"/>
+    <rect x="58" y="50" width="8" height="8" rx="1.5"/><rect x="68" y="50" width="8" height="8" rx="1.5"/>
+    <rect x="78" y="50" width="8" height="8" rx="1.5"/><rect x="88" y="50" width="8" height="8" rx="1.5"/>
+    <rect x="98" y="50" width="16" height="8" rx="1.5"/>
+    <rect x="14" y="62" width="16" height="8" rx="1.5"/><rect x="32" y="62" width="8" height="8" rx="1.5"/>
+    <rect x="42" y="62" width="8" height="8" rx="1.5"/><rect x="52" y="62" width="8" height="8" rx="1.5"/>
+    <rect x="62" y="62" width="8" height="8" rx="1.5"/><rect x="72" y="62" width="8" height="8" rx="1.5"/>
+    <rect x="82" y="62" width="8" height="8" rx="1.5"/><rect x="92" y="62" width="22" height="8" rx="1.5"/>
+    <rect x="14" y="74" width="10" height="8" rx="1.5"/><rect x="26" y="74" width="10" height="8" rx="1.5"/>
+    <rect x="38" y="74" width="52" height="8" rx="1.5"/>
+    <rect x="92" y="74" width="10" height="8" rx="1.5"/><rect x="104" y="74" width="10" height="8" rx="1.5"/>
+  </g>
+  <!-- the two keys of a shortcut, pressed -->
+  <rect x="14" y="62" width="16" height="8" rx="1.5" fill="#3daee9"/>
+  <rect x="42" y="62" width="8" height="8" rx="1.5" fill="#3daee9"/>
+</svg>
@@ -0,0 +1,48 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 128 128" width="128" height="128">
+  <!-- DIN rail -->
+  <rect x="6" y="86" width="116" height="18" rx="3" fill="#7f8c8d"/>
+  <rect x="6" y="92" width="116" height="6" fill="#4d4d4d"/>
+  <!-- six terminal blocks: L, L, N, PE, L, spare -->
+  <g fill="#eff0f1">
+    <rect x="12" y="26" width="16" height="66" rx="2"/>
+    <rect x="30" y="26" width="16" height="66" rx="2"/>
+    <rect x="48" y="26" width="16" height="66" rx="2"/>
+    <rect x="66" y="26" width="16" height="66" rx="2"/>
+    <rect x="84" y="26" width="16" height="66" rx="2"/>
+    <rect x="102" y="26" width="16" height="66" rx="2"/>
+  </g>
+  <!-- right-hand shading of each block -->
+  <g fill="#bdc3c7">
+    <rect x="24" y="28" width="4" height="62"/>
+    <rect x="42" y="28" width="4" height="62"/>
+    <rect x="60" y="28" width="4" height="62"/>
+    <rect x="78" y="28" width="4" height="62"/>
+    <rect x="96" y="28" width="4" height="62"/>
+    <rect x="114" y="28" width="4" height="62"/>
+  </g>
+  <!-- colored marker bands -->
+  <rect x="12" y="26" width="16" height="10" rx="2" fill="#7f8c8d"/>
+  <rect x="30" y="26" width="16" height="10" rx="2" fill="#7f8c8d"/>
+  <rect x="48" y="26" width="16" height="10" rx="2" fill="#3daee9"/>
+  <rect x="66" y="26" width="16" height="10" rx="2" fill="#27ae60"/>
+  <rect x="70" y="26" width="8" height="10" fill="#fdbc4b"/>
+  <rect x="84" y="26" width="16" height="10" rx="2" fill="#7f8c8d"/>
+  <rect x="102" y="26" width="16" height="10" rx="2" fill="#da4453"/>
+  <!-- screws -->
+  <g fill="#31363b">
+    <circle cx="20" cy="50" r="4.5"/><circle cx="20" cy="74" r="4.5"/>
+    <circle cx="38" cy="50" r="4.5"/><circle cx="38" cy="74" r="4.5"/>
+    <circle cx="56" cy="50" r="4.5"/><circle cx="56" cy="74" r="4.5"/>
+    <circle cx="74" cy="50" r="4.5"/><circle cx="74" cy="74" r="4.5"/>
+    <circle cx="92" cy="50" r="4.5"/><circle cx="92" cy="74" r="4.5"/>
+    <circle cx="110" cy="50" r="4.5"/><circle cx="110" cy="74" r="4.5"/>
+  </g>
+  <g fill="#eff0f1">
+    <rect x="16" y="49" width="8" height="2"/><rect x="16" y="73" width="8" height="2"/>
+    <rect x="34" y="49" width="8" height="2"/><rect x="34" y="73" width="8" height="2"/>
+    <rect x="52" y="49" width="8" height="2"/><rect x="52" y="73" width="8" height="2"/>
+    <rect x="70" y="49" width="8" height="2"/><rect x="70" y="73" width="8" height="2"/>
+    <rect x="88" y="49" width="8" height="2"/><rect x="88" y="73" width="8" height="2"/>
+    <rect x="106" y="49" width="8" height="2"/><rect x="106" y="73" width="8" height="2"/>
+  </g>
+</svg>
@@ -216,6 +216,9 @@ Clarification:
    ico/128x128/diagram.png by the QElectroTech team (License CC BY-ND 3.0)
    ico/128x128/document-export.png by the QElectroTech team (License CC BY-ND 3.0)
    ico/128x128/project.png by the QElectroTech team (License CC BY-ND 3.0)
+    ico/128x128/terminalstrip.png and configure-shortcuts.png by Jeff Patterson from the QElectroTech team (License CC BY-ND 3.0), rendered from the .svg files beside them
+    ico/scalable/pdf-import.svg by Jeff Patterson from the QElectroTech team (License CC BY-ND 3.0), laid out like ico/22x22/insert-image.png
+    ico/scalable/diagram.svg, folio-new.svg, folio-delete.svg, folio-properties.svg, label.svg by Jeff Patterson from the QElectroTech team (License CC BY-ND 3.0), the folio icons redrawn in the same style
    ico/256x256/* by Nuri from the QElectroTech team (License CC BY-ND 3.0)
    ico/breeze-icons/* by Nuri from the QElectroTech team (License CC BY-ND 3.0)
    ico/diagram.png by Nuri from the QElectroTech team (License CC BY-ND 3.0)
@@ -148,15 +148,8 @@
        <file alias="themes/qet/22x22/conductor-reset.png">22x22/conductor2.png</file>
        <file alias="themes/qet/22x22/configure-toolbars.png">22x22/configure-toolbars.png</file>
        <file alias="themes/qet/22x22/configure.png">22x22/configure.png</file>
-        <file alias="themes/qet/22x22/diagram.png">22x22/diagram.png</file>
-        <file alias="themes/qet/22x22/diagram_add.png">22x22/diagram_add.png</file>
-        <file alias="themes/qet/22x22/folio-new.png">22x22/diagram_add.png</file>
        <file alias="themes/qet/22x22/diagram_bg.png">22x22/diagram_bg.png</file>
-        <file alias="themes/qet/22x22/diagram_del.png">22x22/diagram_del.png</file>
-        <file alias="themes/qet/22x22/folio-delete.png">22x22/diagram_del.png</file>
        <file alias="themes/qet/22x22/dialog-cancel.png">22x22/dialog-cancel.png</file>
-        <file alias="themes/qet/22x22/dialog-information.png">22x22/dialog-information.png</file>
-        <file alias="themes/qet/22x22/folio-properties.png">22x22/dialog-information.png</file>
        <file alias="themes/qet/22x22/dialog-ok.png">22x22/dialog-ok.png</file>
        <file alias="themes/qet/22x22/document-close.png">22x22/document-close.png</file>
        <file alias="themes/qet/22x22/document-export.png">22x22/document-export.png</file>
@@ -207,7 +200,6 @@
        <file alias="themes/qet/22x22/guides.png">22x22/guides.png</file>
        <file alias="themes/qet/22x22/hotspot.png">22x22/hotspot.png</file>
        <file alias="themes/qet/22x22/insert-image.png">22x22/insert-image.png</file>
-        <file alias="themes/qet/22x22/label.png">22x22/label.png</file>
        <file alias="themes/qet/22x22/landscape.png">22x22/landscape.png</file>
        <file alias="themes/qet/22x22/line.png">22x22/line.png</file>
        <file alias="themes/qet/22x22/list-add.png">22x22/list-add.png</file>
@@ -218,7 +210,6 @@
        <file alias="themes/qet/22x22/object-locked.png">22x22/object-locked.png</file>
        <file alias="themes/qet/22x22/object-rotate-right.png">22x22/object-rotate-right.png</file>
        <file alias="themes/qet/22x22/object-unlocked.png">22x22/object-unlocked.png</file>
-        <file alias="themes/qet/22x22/pdf-import.png">22x22/pdf-import.png</file>
        <file alias="themes/qet/22x22/polygon.png">22x22/polygon.png</file>
        <file alias="themes/qet/22x22/portrait.png">22x22/portrait.png</file>
        <file alias="themes/qet/22x22/preferences-desktop-user.png">22x22/preferences-desktop-user.png</file>
@@ -268,12 +259,20 @@
        <file alias="themes/qet/48x48/user-away-extended.png">48x48/user-away-extended.png</file>
        <file alias="themes/qet/48x48/user-away.png">48x48/user-away.png</file>
        <file alias="themes/qet/48x48/view-pim-journal.png">48x48/view-pim-journal.png</file>
+        <file alias="themes/qet/128x128/configure-shortcuts.png">128x128/configure-shortcuts.png</file>
        <file alias="themes/qet/128x128/diagram.png">128x128/diagram.png</file>
        <file alias="themes/qet/128x128/document-export.png">128x128/document-export.png</file>
        <file alias="themes/qet/128x128/plasmagik.png">128x128/plasmagik.png</file>
        <file alias="themes/qet/128x128/printer.png">128x128/printer.png</file>
        <file alias="themes/qet/128x128/project.png">128x128/project.png</file>
        <file alias="themes/qet/128x128/settings.png">128x128/settings.png</file>
+        <file alias="themes/qet/128x128/terminalstrip.png">128x128/terminalstrip.png</file>
+        <file alias="themes/qet/scalable/diagram.svg">scalable/diagram.svg</file>
+        <file alias="themes/qet/scalable/folio-delete.svg">scalable/folio-delete.svg</file>
+        <file alias="themes/qet/scalable/folio-new.svg">scalable/folio-new.svg</file>
+        <file alias="themes/qet/scalable/folio-properties.svg">scalable/folio-properties.svg</file>
+        <file alias="themes/qet/scalable/label.svg">scalable/label.svg</file>
+        <file alias="themes/qet/scalable/pdf-import.svg">scalable/pdf-import.svg</file>
        <file alias="themes/qet/scalable/edit-opacity.svg">breeze-icons/scalable/apps/hidef/edit-opacity.svg</file>
        <file alias="themes/qet/scalable/image-flip-horizontal.svg">breeze-icons/scalable/apps/hidef/image-flip-horizontal-symbolic.svg</file>
        <file alias="themes/qet/scalable/image-flip-vertical.svg">breeze-icons/scalable/apps/hidef/image-flip-vertical-symbolic.svg</file>
@@ -290,7 +289,6 @@
        <file>themes/qet-dark/16x16/conductor-edit.png</file>
        <file>themes/qet-dark/16x16/configure-toolbars.png</file>
        <file>themes/qet-dark/16x16/configure.png</file>
-        <file>themes/qet-dark/16x16/diagram.png</file>
        <file>themes/qet-dark/16x16/dialog-cancel.png</file>
        <file>themes/qet-dark/16x16/dialog-ok.png</file>
        <file>themes/qet-dark/16x16/document-export.png</file>
@@ -331,9 +329,6 @@
        <file>themes/qet-dark/16x16/folder-open.png</file>
        <file>themes/qet-dark/16x16/folder-show-all.png</file>
        <file>themes/qet-dark/16x16/folder.png</file>
-        <file>themes/qet-dark/16x16/folio-delete.png</file>
-        <file>themes/qet-dark/16x16/folio-new.png</file>
-        <file>themes/qet-dark/16x16/folio-properties.png</file>
        <file>themes/qet-dark/16x16/folio-ref-coming.png</file>
        <file>themes/qet-dark/16x16/go-company.png</file>
        <file>themes/qet-dark/16x16/go-down-double.png</file>
@@ -348,7 +343,6 @@
        <file>themes/qet-dark/16x16/item-copy.png</file>
        <file>themes/qet-dark/16x16/item-move.png</file>
        <file>themes/qet-dark/16x16/kdenlive-show-video.png</file>
-        <file>themes/qet-dark/16x16/label.png</file>
        <file>themes/qet-dark/16x16/list-add.png</file>
        <file>themes/qet-dark/16x16/list-remove.png</file>
        <file>themes/qet-dark/16x16/masquer.png</file>
@@ -381,15 +375,7 @@
        <file>themes/qet-dark/22x22/arrow-right.png</file>
        <file>themes/qet-dark/22x22/configure-toolbars.png</file>
        <file>themes/qet-dark/22x22/configure.png</file>
-        <file>themes/qet-dark/22x22/diagram.png</file>
-        <file>themes/qet-dark/22x22/diagram_add.png</file>
-        <file>themes/qet-dark/22x22/folio-new.png</file>
-        <file>themes/qet-dark/22x22/diagram_bg.png</file>
-        <file>themes/qet-dark/22x22/diagram_del.png</file>
-        <file>themes/qet-dark/22x22/folio-delete.png</file>
        <file>themes/qet-dark/22x22/dialog-cancel.png</file>
-        <file>themes/qet-dark/22x22/dialog-information.png</file>
-        <file>themes/qet-dark/22x22/folio-properties.png</file>
        <file>themes/qet-dark/22x22/dialog-ok.png</file>
        <file>themes/qet-dark/22x22/document-export.png</file>
        <file>themes/qet-dark/22x22/document-import.png</file>
@@ -425,7 +411,6 @@
        <file>themes/qet-dark/22x22/go-up.png</file>
        <file>themes/qet-dark/22x22/grid.png</file>
        <file>themes/qet-dark/22x22/insert-image.png</file>
-        <file>themes/qet-dark/22x22/label.png</file>
        <file>themes/qet-dark/22x22/landscape.png</file>
        <file>themes/qet-dark/22x22/line.png</file>
        <file>themes/qet-dark/22x22/list-add.png</file>
@@ -436,7 +421,6 @@
        <file>themes/qet-dark/22x22/object-locked.png</file>
        <file>themes/qet-dark/22x22/object-rotate-right.png</file>
        <file>themes/qet-dark/22x22/object-unlocked.png</file>
-        <file>themes/qet-dark/22x22/pdf-import.png</file>
        <file>themes/qet-dark/22x22/polygon.png</file>
        <file>themes/qet-dark/22x22/portrait.png</file>
        <file>themes/qet-dark/22x22/preferences-desktop-user.png</file>
@@ -472,8 +456,13 @@
        <file>themes/qet-dark/48x48/user-away.png</file>
        <file>themes/qet-dark/48x48/view-pim-journal.png</file>
        <file>themes/qet-dark/128x128/plasmagik.png</file>
-        <file>themes/qet-dark/128x128/printer.png</file>
        <file>themes/qet-dark/128x128/settings.png</file>
+        <file>themes/qet-dark/scalable/diagram.svg</file>
+        <file>themes/qet-dark/scalable/folio-delete.svg</file>
+        <file>themes/qet-dark/scalable/folio-new.svg</file>
+        <file>themes/qet-dark/scalable/folio-properties.svg</file>
+        <file>themes/qet-dark/scalable/label.svg</file>
+        <file>themes/qet-dark/scalable/pdf-import.svg</file>
        <file>themes/qet-dark/scalable/edit-opacity.svg</file>
        <file>themes/qet-dark/scalable/image-flip-horizontal.svg</file>
        <file>themes/qet-dark/scalable/image-flip-vertical.svg</file>
@@ -482,5 +471,7 @@
        <file>themes/qet-dark/scalable/ellipse-to-bezier.svg</file>
        <file>themes/qet-dark/scalable/rect-to-bezier.svg</file>
        <file>themes/qet-dark/scalable/rect-to-polyline.svg</file>
+        <file alias="themes/qet-dark/128x128/document-export.png">128x128/document-export.png</file>
+        <file alias="themes/qet-dark/128x128/printer.png">128x128/printer.png</file>
    </qresource>
 </RCC>
@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#4d4d4d;
+      }
+      </style>
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+  </g>
+</svg>
@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dcdcdc;
+      }
+      </style>
+  </defs>
+  <g transform="translate(1,1)">
+  <path style="fill:#dcdcdc;fill-opacity:1;stroke:none" d="M 3 5 h 1 v 1 h -1 Z M 3 6 h 1 v 1 h -1 Z M 3 7 h 1 v 1 h -1 Z M 3 8 h 1 v 1 h -1 Z M 3 9 h 1 v 1 h -1 Z M 3 10 h 1 v 1 h -1 Z M 3 11 h 1 v 1 h -1 Z M 3 12 h 1 v 1 h -1 Z M 3 13 h 1 v 1 h -1 Z M 3 14 h 1 v 1 h -1 Z M 3 15 h 1 v 1 h -1 Z M 3 16 h 1 v 1 h -1 Z M 4 5 h 1 v 1 h -1 Z M 4 13 h 1 v 1 h -1 Z M 4 16 h 1 v 1 h -1 Z M 5 5 h 1 v 1 h -1 Z M 5 13 h 1 v 1 h -1 Z M 5 16 h 1 v 1 h -1 Z M 6 5 h 1 v 1 h -1 Z M 6 8 h 1 v 1 h -1 Z M 6 10 h 1 v 1 h -1 Z M 6 13 h 1 v 1 h -1 Z M 6 16 h 1 v 1 h -1 Z M 7 5 h 1 v 1 h -1 Z M 7 8 h 1 v 1 h -1 Z M 7 10 h 1 v 1 h -1 Z M 7 13 h 1 v 1 h -1 Z M 7 16 h 1 v 1 h -1 Z M 8 5 h 1 v 1 h -1 Z M 8 8 h 1 v 1 h -1 Z M 8 10 h 1 v 1 h -1 Z M 8 13 h 1 v 1 h -1 Z M 8 16 h 1 v 1 h -1 Z M 9 5 h 1 v 1 h -1 Z M 9 8 h 1 v 1 h -1 Z M 9 10 h 1 v 1 h -1 Z M 9 13 h 1 v 1 h -1 Z M 9 16 h 1 v 1 h -1 Z M 10 5 h 1 v 1 h -1 Z M 10 8 h 1 v 1 h -1 Z M 10 10 h 1 v 1 h -1 Z M 10 13 h 1 v 1 h -1 Z M 10 16 h 1 v 1 h -1 Z M 11 5 h 1 v 1 h -1 Z M 11 8 h 1 v 1 h -1 Z M 11 10 h 1 v 1 h -1 Z M 11 13 h 1 v 1 h -1 Z M 11 14 h 1 v 1 h -1 Z M 11 15 h 1 v 1 h -1 Z M 11 16 h 1 v 1 h -1 Z M 12 5 h 1 v 1 h -1 Z M 12 8 h 1 v 1 h -1 Z M 12 10 h 1 v 1 h -1 Z M 12 13 h 1 v 1 h -1 Z M 12 16 h 1 v 1 h -1 Z M 13 5 h 1 v 1 h -1 Z M 13 8 h 1 v 1 h -1 Z M 13 10 h 1 v 1 h -1 Z M 13 13 h 1 v 1 h -1 Z M 13 16 h 1 v 1 h -1 Z M 14 5 h 1 v 1 h -1 Z M 14 8 h 1 v 1 h -1 Z M 14 10 h 1 v 1 h -1 Z M 14 13 h 1 v 1 h -1 Z M 14 16 h 1 v 1 h -1 Z M 15 5 h 1 v 1 h -1 Z M 15 8 h 1 v 1 h -1 Z M 15 10 h 1 v 1 h -1 Z M 15 13 h 1 v 1 h -1 Z M 15 16 h 1 v 1 h -1 Z M 16 5 h 1 v 1 h -1 Z M 16 13 h 1 v 1 h -1 Z M 16 16 h 1 v 1 h -1 Z M 17 5 h 1 v 1 h -1 Z M 17 13 h 1 v 1 h -1 Z M 17 16 h 1 v 1 h -1 Z M 18 5 h 1 v 1 h -1 Z M 18 6 h 1 v 1 h -1 Z M 18 7 h 1 v 1 h -1 Z M 18 8 h 1 v 1 h -1 Z M 18 9 h 1 v 1 h -1 Z M 18 10 h 1 v 1 h -1 Z M 18 11 h 1 v 1 h -1 Z M 18 12 h 1 v 1 h -1 Z M 18 13 h 1 v 1 h -1 Z M 18 14 h 1 v 1 h -1 Z M 18 15 h 1 v 1 h -1 Z M 18 16 h 1 v 1 h -1 Z" class="ColorScheme-Text"/>
+  </g>
+</svg>
@@ -0,0 +1,12 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dcdcdc;
+      }
+      </style>
+  </defs>
+  <g transform="translate(1,1)">
+  <path style="fill:#dcdcdc;fill-opacity:1;stroke:none" d="M 3 5 h 1 v 1 h -1 Z M 3 6 h 1 v 1 h -1 Z M 3 7 h 1 v 1 h -1 Z M 3 8 h 1 v 1 h -1 Z M 3 9 h 1 v 1 h -1 Z M 3 10 h 1 v 1 h -1 Z M 3 11 h 1 v 1 h -1 Z M 3 12 h 1 v 1 h -1 Z M 3 13 h 1 v 1 h -1 Z M 3 14 h 1 v 1 h -1 Z M 3 15 h 1 v 1 h -1 Z M 3 16 h 1 v 1 h -1 Z M 4 5 h 1 v 1 h -1 Z M 4 13 h 1 v 1 h -1 Z M 4 14 h 1 v 1 h -1 Z M 4 15 h 1 v 1 h -1 Z M 4 16 h 1 v 1 h -1 Z M 5 5 h 1 v 1 h -1 Z M 5 13 h 1 v 1 h -1 Z M 5 14 h 1 v 1 h -1 Z M 5 15 h 1 v 1 h -1 Z M 5 16 h 1 v 1 h -1 Z M 6 5 h 1 v 1 h -1 Z M 6 13 h 1 v 1 h -1 Z M 6 14 h 1 v 1 h -1 Z M 6 15 h 1 v 1 h -1 Z M 6 16 h 1 v 1 h -1 Z M 7 5 h 1 v 1 h -1 Z M 7 13 h 1 v 1 h -1 Z M 7 14 h 1 v 1 h -1 Z M 7 15 h 1 v 1 h -1 Z M 7 16 h 1 v 1 h -1 Z M 8 5 h 1 v 1 h -1 Z M 8 13 h 1 v 1 h -1 Z M 8 14 h 1 v 1 h -1 Z M 8 15 h 1 v 1 h -1 Z M 8 16 h 1 v 1 h -1 Z M 9 5 h 1 v 1 h -1 Z M 9 13 h 1 v 1 h -1 Z M 9 14 h 1 v 1 h -1 Z M 9 15 h 1 v 1 h -1 Z M 9 16 h 1 v 1 h -1 Z M 10 5 h 1 v 1 h -1 Z M 10 13 h 1 v 1 h -1 Z M 10 14 h 1 v 1 h -1 Z M 10 15 h 1 v 1 h -1 Z M 10 16 h 1 v 1 h -1 Z M 11 5 h 1 v 1 h -1 Z M 11 13 h 1 v 1 h -1 Z M 11 14 h 1 v 1 h -1 Z M 11 15 h 1 v 1 h -1 Z M 11 16 h 1 v 1 h -1 Z M 12 5 h 1 v 1 h -1 Z M 12 13 h 1 v 1 h -1 Z M 12 14 h 1 v 1 h -1 Z M 12 15 h 1 v 1 h -1 Z M 12 16 h 1 v 1 h -1 Z M 13 5 h 1 v 1 h -1 Z M 13 13 h 1 v 1 h -1 Z M 13 14 h 1 v 1 h -1 Z M 13 15 h 1 v 1 h -1 Z M 13 16 h 1 v 1 h -1 Z M 14 5 h 1 v 1 h -1 Z M 14 13 h 1 v 1 h -1 Z M 14 14 h 1 v 1 h -1 Z M 14 15 h 1 v 1 h -1 Z M 14 16 h 1 v 1 h -1 Z M 15 5 h 1 v 1 h -1 Z M 15 13 h 1 v 1 h -1 Z M 15 14 h 1 v 1 h -1 Z M 15 15 h 1 v 1 h -1 Z M 15 16 h 1 v 1 h -1 Z M 16 5 h 1 v 1 h -1 Z M 16 13 h 1 v 1 h -1 Z M 16 14 h 1 v 1 h -1 Z M 16 15 h 1 v 1 h -1 Z M 16 16 h 1 v 1 h -1 Z M 17 5 h 1 v 1 h -1 Z M 17 13 h 1 v 1 h -1 Z M 17 14 h 1 v 1 h -1 Z M 17 15 h 1 v 1 h -1 Z M 17 16 h 1 v 1 h -1 Z M 18 5 h 1 v 1 h -1 Z M 18 6 h 1 v 1 h -1 Z M 18 7 h 1 v 1 h -1 Z M 18 8 h 1 v 1 h -1 Z M 18 9 h 1 v 1 h -1 Z M 18 10 h 1 v 1 h -1 Z M 18 11 h 1 v 1 h -1 Z M 18 12 h 1 v 1 h -1 Z M 18 13 h 1 v 1 h -1 Z M 18 14 h 1 v 1 h -1 Z M 18 15 h 1 v 1 h -1 Z M 18 16 h 1 v 1 h -1 Z" class="ColorScheme-Text"/>
+  </g>
+</svg>
@@ -0,0 +1,13 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" width="24" height="24">
+  <defs id="defs3051">
+    <style type="text/css" id="current-color-scheme">
+      .ColorScheme-Text {
+        color:#dcdcdc;
+      }
+      </style>
+  </defs>
+  <g transform="translate(1,1)">
+  <path style="fill:#dcdcdc;fill-opacity:1;stroke:none" d="M 3 3 h 16 v 1 h -16 Z M 3 4 h 1 v 15 h -1 Z M 4 18 h 10 v 1 h -10 Z M 18 4 h 1 v 8 h -1 Z M 16 14 h 1 v 5 h -1 Z M 14 16 h 5 v 1 h -5 Z" class="ColorScheme-Text"/>
+  <path style="fill:#dcdcdc;fill-opacity:1;stroke:none" d="M 5 7 h 1 v 1 h -1 Z M 6 7 h 1 v 1 h -1 Z M 7 7 h 1 v 1 h -1 Z M 5 8 h 1 v 1 h -1 Z M 7 8 h 1 v 1 h -1 Z M 5 9 h 1 v 1 h -1 Z M 6 9 h 1 v 1 h -1 Z M 7 9 h 1 v 1 h -1 Z M 5 10 h 1 v 1 h -1 Z M 5 11 h 1 v 1 h -1 Z M 9 7 h 1 v 1 h -1 Z M 10 7 h 1 v 1 h -1 Z M 9 8 h 1 v 1 h -1 Z M 11 8 h 1 v 1 h -1 Z M 9 9 h 1 v 1 h -1 Z M 11 9 h 1 v 1 h -1 Z M 9 10 h 1 v 1 h -1 Z M 11 10 h 1 v 1 h -1 Z M 9 11 h 1 v 1 h -1 Z M 10 11 h 1 v 1 h -1 Z M 13 7 h 1 v 1 h -1 Z M 14 7 h 1 v 1 h -1 Z M 15 7 h 1 v 1 h -1 Z M 13 8 h 1 v 1 h -1 Z M 13 9 h 1 v 1 h -1 Z M 14 9 h 1 v 1 h -1 Z M 13 10 h 1 v 1 h -1 Z M 13 11 h 1 v 1 h -1 Z" class="ColorScheme-Text"/>
+  </g>
+</svg>
@@ -34,10 +34,27 @@ expects, so QIcon::fromTheme("name") finds them. The dark theme only holds
 the icons that need a dark variant: black line art. Colored icons are not
 touched; the dark theme inherits them from the light one.

+Qt inherits by name, not by size: once a name has any file in the dark
+theme, the parent theme is never consulted for that name, and a size the
+dark theme lacks is served by scaling the nearest dark file. An icon that
+is line art at 22 pixels and colored at 128 (the printer) would then come
+out as the 22 pixel copy scaled up on a dark palette. So for every name
+the dark theme holds, the .qrc also aliases the light files of the sizes
+the dark theme does not have, when they read on the dark window (3:1,
+measured as tests/qttest/tst_qeticons.cpp does); a light file that does
+not is left out, and Qt scales the nearest dark copy as before.
+
 An icon counts as line art when fewer than 20% of its visible pixels are
 saturated. Its dark copy keeps hue and alpha and inverts lightness, scaled
 so pure black becomes (220, 220, 220), the dark palette's text color.

+An icon drawn as a light object is left alone even when it is not
+saturated: a page sheet, a printer body, the white half of the background
+swatch. Such art already reads on a dark toolbar, and inverting it would
+turn the white body black (the PDF import icon, GitHub #919). The test is
+the share of visible pixels that are near white: 30% or more and the icon
+inherits from the light theme untouched.
+
 Requires Pillow. Idempotent: running it twice changes nothing.
 """

@@ -64,16 +81,21 @@ SIZES = ["16x16", "22x22", "32x32", "48x48", "128x128"]

 # Table entries in sources/qeticons.cpp that pair a 16 pixel file with a
 # 22 pixel file of another name. The theme needs one name per icon, so
-# the 22 pixel file is exposed under the 16 pixel name as well.
+# the 22 pixel file is exposed under the 16 pixel name as well. The folio
+# icons that used to be listed here are SVGs now (ico/scalable/).
 ALIASES = {
    "22x22/conductor2.png": "conductor-reset",
-    "22x22/diagram_add.png": "folio-new",
-    "22x22/diagram_del.png": "folio-delete",
-    "22x22/dialog-information.png": "folio-properties",
 }

-# SVG icons referenced from sources/qeticons.cpp.
+# SVG icons referenced from sources/qeticons.cpp. ico/scalable/ holds the
+# ones drawn for QET as vectors; one file serves every size.
 SVGS = [
+    "scalable/diagram.svg",
+    "scalable/folio-delete.svg",
+    "scalable/folio-new.svg",
+    "scalable/folio-properties.svg",
+    "scalable/label.svg",
+    "scalable/pdf-import.svg",
    "breeze-icons/scalable/apps/hidef/edit-opacity.svg",
    "breeze-icons/scalable/apps/hidef/image-flip-horizontal-symbolic.svg",
    "breeze-icons/scalable/apps/hidef/image-flip-vertical-symbolic.svg",
@@ -85,8 +107,12 @@ SVGS = [
 ]

 SATURATED_FRACTION = 0.20   # at or above this an icon is "colored"
+WHITE_LIGHTNESS = 0.85      # a visible pixel this light counts as white
+WHITE_FRACTION = 0.30       # at or above this an icon is "light art"
 INK = 220 / 255.0           # lightness of pure black after inversion
 SVG_INK = "#dcdcdc"
+DARK_WINDOW = (53, 53, 53)  # QET::Palette::fusionDark() window color
+DARK_RATIO = 3.0            # what tst_qeticons requires of a dark theme file


 def visible_pixels(image):
@@ -107,6 +133,38 @@ def is_line_art(image):
    return saturated / len(pixels) < SATURATED_FRACTION


+def has_light_fill(image):
+    """True when the icon is mostly white: a page, a sheet, a light body."""
+    pixels = visible_pixels(image)
+    if not pixels:
+        return False
+    white = sum(1 for r, g, b, _ in pixels
+                if colorsys.rgb_to_hls(r / 255, g / 255, b / 255)[1] > WHITE_LIGHTNESS)
+    return white / len(pixels) >= WHITE_FRACTION
+
+
+def relative_luminance(rgb):
+    def linear(c):
+        c /= 255.0
+        return c / 12.92 if c <= 0.03928 else ((c + 0.055) / 1.055) ** 2.4
+    r, g, b = rgb
+    return 0.2126 * linear(r) + 0.7152 * linear(g) + 0.0722 * linear(b)
+
+
+def reads_on_dark(image):
+    """True when the icon's mean visible color reaches DARK_RATIO against
+    the dark window, the test tst_qeticons applies to every dark file."""
+    pixels = visible_pixels(image)
+    if not pixels:
+        return False
+    n = len(pixels)
+    mean = (sum(p[0] for p in pixels) // n, sum(p[1] for p in pixels) // n,
+            sum(p[2] for p in pixels) // n)
+    lighter, darker = sorted((relative_luminance(mean), relative_luminance(DARK_WINDOW)),
+                             reverse=True)
+    return (lighter + 0.05) / (darker + 0.05) >= DARK_RATIO
+
+
 def invert_lightness(image):
    """Invert lightness, keeping hue, saturation and alpha.

@@ -177,7 +235,7 @@ def main():
    light = []   # (alias, source) pairs, paths relative to ico/
    dark = []    # paths relative to ico/, files exist on disk
    changed = 0
-    line_art = colored = 0
+    line_art = colored = light_art = 0

    for size in SIZES:
        folder = ICO / size
@@ -188,7 +246,10 @@ def main():
                names.append(ALIASES[rel])
            image = Image.open(png).convert("RGBA")
            art = is_line_art(image)
-            if art:
+            if art and has_light_fill(image):
+                art = False
+                light_art += 1
+            elif art:
                line_art += 1
                dark_image = None
            else:
@@ -213,6 +274,29 @@ def main():
        changed += write_if_changed(target, text)
        dark.append(f"themes/qet-dark/scalable/{name}")

+    # Complete each dark name with the light files of its other sizes
+    # that read on a dark window (see the module docstring): aliases, no
+    # copies.
+    dark_sizes = {}
+    for path in dark:
+        size, name = path.split("/")[2:]
+        dark_sizes.setdefault(name, set()).add(size)
+    dark_aliases = []
+    for alias, source in light:
+        size, name = alias.split("/")[2:]
+        if name in dark_sizes and size not in dark_sizes[name] \
+                and reads_on_dark(Image.open(ICO / source).convert("RGBA")):
+            dark_aliases.append((f"themes/qet-dark/{size}/{name}", source))
+
+    # Drop dark files from an earlier run that are no longer generated, so
+    # a reclassified icon falls back to the light theme instead of keeping
+    # a stale copy.
+    for stale in sorted((THEMES / "qet-dark").glob("*/*")):
+        if stale.is_file() and stale.name != "index.theme" \
+                and str(stale.relative_to(ICO)) not in dark:
+            stale.unlink()
+            changed += 1
+
    dirs = SIZES + ["scalable"]
    changed += write_if_changed(THEMES / "qet" / "index.theme",
                                index_theme("qet", "QElectroTech icons", dirs))
@@ -228,11 +312,13 @@ def main():
        qrc.append(f'        <file alias="{alias}">{source}</file>')
    for path in dark:
        qrc.append(f"        <file>{path}</file>")
+    for alias, source in dark_aliases:
+        qrc.append(f'        <file alias="{alias}">{source}</file>')
    qrc += ["    </qresource>", "</RCC>", ""]
    changed += write_if_changed(QRC, "\n".join(qrc))

-    print(f"{line_art} line-art icons, {colored} colored icons, {len(SVGS)} SVGs; "
-          f"{changed} files written")
+    print(f"{line_art} line-art icons, {light_art} light icons, {colored} colored icons, "
+          f"{len(SVGS)} SVGs; {changed} files written or removed")


 if __name__ == "__main__":
@@ -0,0 +1,349 @@
+# qet-mcp — a Model Context Protocol server for QElectroTech projects
+
+A small stdio MCP server that lets an AI assistant read and verify
+QElectroTech projects: what is in a project, what an edit actually
+changed, and what a whole corpus of projects contains.
+
+It has **no third-party dependencies** — Python 3.9+ and the standard
+library only. The MCP SDK is not required.
+
+## Why
+
+Verifying a change by screenshot is unreliable, and this tool exists
+because that unreliability produced two wrong conclusions in one review
+session:
+
+- A drag of a multi-element selection *looked* like it had left the
+  symbols behind and detached their labels. Diffing the saved file showed
+  all four elements had moved by an identical `(0, -80)` and **no label
+  had moved at all**. A bug report was one step away from being filed.
+- An "Apply" button *looked* like it did nothing. It was disabled,
+  because a required field was empty.
+
+Both times the pixels misled and the model told the truth. So the tools
+here read the model.
+
+## Tools
+
+| Tool | What it answers |
+|---|---|
+| `qet_project_info` | title, format version, folios, element and conductor counts |
+| `qet_elements` | placed elements: uuid, type, position, label, information bag |
+| `qet_conductors` | conductors and their documentation fields; filter by attribute |
+| `qet_diff` | **what an edit actually changed** — element moves, adds, removes, relabels; conductor changes; and folio fields, texts, shapes, images, symbol text fields and terminal strips |
+| `qet_scan` | sweep a directory of projects, counting nodes carrying an attribute |
+| `qet_element_info` | a `.elmt`: translated names, terminals, info fields, part counts |
+| `qet_export` | run a headless export (pdf, png, svg, bom, cables, wires, wiring, nets, links, info) |
+| `qet_edit` | **change a project** — place, move, rotate, label, wire, number, cross-reference, add text, shapes and images, restyle a symbol's text fields, delete; then diff the result |
+| `qet_element_build` | **author a `.elmt`** — draw a new symbol, with terminals to wire it by |
+| `qet_project_new` | **start from nothing** — an empty project with a title and folios |
+| `qet_element_search` | **find a symbol** in a collection by name (any language), type or terminal count |
+| `qet_check` | **design-rule checks** — duplicate labels, unlabelled masters, unnumbered conductors, empty folios |
+| `qet_query` | **ask the project database** — read-only SQL over the views and tables |
+
+`qet_export` and `qet_edit` launch QElectroTech. Everything else parses the
+file directly, which is faster, needs no display, and cannot be confused by
+a dialog.
+
+## Running it
+
+```bash
+# list the tools and exit
+misc/qet-mcp/qet_mcp.py --list
+
+# speak MCP on stdin/stdout
+misc/qet-mcp/qet_mcp.py
+```
+
+Register it with an MCP client, for example:
+
+```json
+{
+  "mcpServers": {
+    "qet": {
+      "command": "python3",
+      "args": ["/path/to/qelectrotech/misc/qet-mcp/qet_mcp.py"],
+      "env": {
+        "QET_MCP_WORKSPACE": "/home/you/drawings",
+        "QET_ENABLE_SCRIPTING": "1"
+      }
+    }
+  }
+}
+```
+
+## Five tools need scripting switched on
+
+A QElectroTech with JavaScript scripting switched off refuses `--run`, and
+off is the default from
+[#984](https://github.com/qelectrotech/qelectrotech-source-mirror/pull/984)
+onwards. Five tools here drive it that way and stop working until it is
+turned on:
+
+| | |
+|---|---|
+| need `QET_ENABLE_SCRIPTING=1` | `qet_query`, `qet_continuity`, `qet_check`, `qet_project_new`, `qet_edit` |
+| unaffected | everything else — they read the `.qet` directly, or, in `qet_export`'s case, use a plain CLI flag |
+
+The variable goes in the environment this server is started in, which for an
+MCP client is the `env` block above; the server passes its environment
+straight through to QElectroTech. It does not set the variable itself, on
+purpose — a switch a program turns on for itself is not a switch. Whoever
+configured this server and pointed it at a QElectroTech binary made that
+choice, and their interactive QElectroTech keeps whatever its own setting
+says.
+
+Without it, those five come back `"ok": false` with a `hint` naming the
+variable. Older builds, from before the setting existed, need nothing.
+
+## What the server is allowed to touch
+
+Every path in a tool call is chosen by the model, so without a policy this
+server would be a read/write primitive for anything the operating system
+lets the process reach: read any project on the disk, export one somewhere
+else, overwrite an unrelated file, embed an arbitrary local image or PDF.
+
+So **data paths are confined to a workspace**:
+
+| | |
+|---|---|
+| `QET_MCP_WORKSPACE` | the directories tool calls may read and write, separated by `:` (`;` on Windows) |
+| unset | the directory the server was started in |
+| `QET_MCP_ALLOW_ANY_PATH=1` | turns the check off entirely |
+
+Set the workspace to the folder your drawings live in. A path outside it is
+refused with an error naming what was allowed; symlinks are resolved first,
+so a link planted inside the workspace is judged by where it points.
+
+Two arguments are deliberately **not** confined: `binary` (the
+`qelectrotech` executable) and `elements_dir` (the element collection).
+Those are configuration, chosen once by whoever runs the server, and both
+normally live in `/usr` or a build tree — outside any sensible workspace.
+Confining them would reject the ordinary case while stopping nothing.
+
+`QET_MCP_ALLOW_ANY_PATH=1` is equivalent to granting the client local
+filesystem access with this process's privileges. It exists so that is a
+deliberate choice rather than the default.
+
+**Nothing is overwritten unasked.** `qet_export`, `qet_edit`,
+`qet_project_new` and `qet_element_build` refuse an `output` that already
+exists unless the call passes `"overwrite": true`. Replacing a file is the
+one step this server cannot undo, so it is the one step it will not take on
+its own.
+
+The confinement is applied where tool arguments enter the server, not inside
+each tool. Importing `qet_mcp` and calling `tool_export()` from your own
+Python is not confined and is not meant to be — that is your code calling a
+library, and you already chose the paths.
+
+## Worked examples
+
+**What did that edit change?**
+
+```json
+{"name": "qet_diff", "arguments": {"before": "a.qet", "after": "b.qet"}}
+```
+
+```json
+"elements": { "moved_count": 4,
+              "distinct_move_deltas": [[0.0, -80.0]],
+              "relabelled": [], "info_changed": [] }
+```
+
+Four elements moved by one uniform delta; nothing was relabelled. That is
+the answer a screenshot gave wrongly.
+
+**Draw something, and check it landed**
+
+```json
+{"name": "qet_edit", "arguments": {
+  "binary": "/path/to/qelectrotech",
+  "project": "in.qet", "output": "out.qet",
+  "elements_dir": "/path/to/qelectrotech/elements",
+  "operations": [
+    {"op": "add_folio", "id": "f"},
+    {"op": "set_folio_title", "folio": "$f", "title": "Starter"},
+    {"op": "add_element", "id": "k1", "folio": "$f", "path": "common://.../coil.elmt", "x": 100, "y": 100},
+    {"op": "add_element", "id": "k2", "folio": "$f", "path": "common://.../coil.elmt", "x": 320, "y": 100},
+    {"op": "add_conductor", "folio": "$f", "from": "$k1", "from_terminal": 0, "to": "$k2", "to_terminal": 0},
+    {"op": "set_conductor", "folio": "$f", "element": "$k1", "terminal": 0, "property": "num", "value": "W7"},
+    {"op": "set_label", "folio": "$f", "element": "$k1", "label": "KM1"}
+  ]}}
+```
+
+An op that creates something takes an `"id"`; later ops name it as `"$id"`.
+Terminals are addressed by index — top to bottom, then left to right, **not**
+the order the `.elmt` lists them. `qet_element_info` and `qet_element_search`
+both report that index order. The answer carries a per-operation result
+*and* a `qet_diff`, because "addConductor → true" says the call was
+accepted, not that the file came out right:
+
+```json
+"diff": {"elements":   {"before": 11, "after": 13, "added": ["{0aa3…}", "{6f63…}"]},
+         "conductors": {"before": 47, "after": 48, "added": ["4:{0aa3…}/{2904…}--{6f63…}/{2904…}"],
+                        "removed": []}}
+```
+
+**Draw a symbol that does not exist yet**
+
+```json
+{"name": "qet_element_build", "arguments": {
+  "output": "/path/to/collection/99_custom/my_resistor.elmt",
+  "names": {"en": "Test resistor", "fr": "Résistance de test"},
+  "parts": [
+    {"type": "rect", "x": -10, "y": -20, "width": 20, "height": 40},
+    {"type": "line", "x1": 0, "y1": -30, "x2": 0, "y2": -20},
+    {"type": "line", "x1": 0, "y1": 20,  "x2": 0, "y2": 30},
+    {"type": "text", "x": 14, "y": -4, "text": "R"}
+  ],
+  "terminals": [{"x": 0, "y": -30, "orientation": "n", "name": "1"},
+                {"x": 0, "y": 30,  "orientation": "s", "name": "2"}]}}
+```
+
+Then place it with `qet_edit` like any catalogue element. Unlike a
+project, a `.elmt` is not rewritten by QElectroTech on a round trip, so
+generating one here is safe in a way that generating a `.qet` would not
+be — there is no `toXml()` waiting to drop what this writer did not know
+to emit.
+
+**Ask a question the XML cannot answer**
+
+```json
+{"name": "qet_query", "arguments": {
+  "binary": "/path/to/qelectrotech", "project": "industrial.qet",
+  "sql": "SELECT label, COUNT(*) AS n FROM element_nomenclature_view WHERE label <> '' GROUP BY label HAVING n > 1 ORDER BY n DESC"}}
+```
+
+```json
+"rows": [{"label": "V6", "n": 7}, {"label": "V5", "n": 6}, {"label": "V4", "n": 6}]
+```
+
+Duplicate element labels in a shipped example — a design-rule question,
+answered by the database that already knew it.
+
+**How much of a corpus uses a field?**
+
+```json
+{"name": "qet_scan",
+ "arguments": {"directory": "examples", "tag": "conductor", "attribute": "cable"}}
+```
+
+```json
+{ "files": 24, "total": 3190, "non_empty": 0, "distinct_values": [] }
+```
+
+Across the shipped examples: 3190 conductors, not one with a cable value.
+
+## Testing
+
+```bash
+python3 test_qet_mcp.py                      # unit + protocol, no QElectroTech needed
+QET_BINARY=/path/to/qelectrotech \
+QET_ELEMENTS=/path/to/qelectrotech/elements \
+QET_EXAMPLES=/path/to/qelectrotech/examples \
+QET_ENABLE_SCRIPTING=1 \
+    python3 test_qet_mcp.py                  # everything
+```
+
+`QET_ENABLE_SCRIPTING=1` matters from #984 onwards: without it the
+integration tests that drive QElectroTech through a script all fail, and
+they fail as "the edit did nothing" rather than as "scripting is off", which
+reads like a regression in the thing under test.
+
+176 tests in three layers: unit (validation, script generation, the terminal
+order rule, the diff, the part schema), the real stdio transport, and
+integration against a built QElectroTech. Several exist because the
+behaviour they pin was once wrong and looked right, and say so in their
+docstrings. To check the suite itself rather than trust it, each of those
+bugs was reintroduced in turn and the suite confirmed to fail: ten in the
+Python, plus the hang guard on `addConductor` and the database refresh in
+`ConductorCreator` in the C++.
+
+## Notes and limits
+
+- **The project database is reachable now, through `qet_query`.** It was
+  not when this server was written, which is why every other structural
+  tool here re-derives its answer from the XML. Prefer the views —
+  `element_nomenclature_view`, `project_summary_view`, `wiring_list_view`
+  — which exist to be queried; the underlying tables are how the cache is
+  arranged today and a column may move. Call `qet_query` with no `sql` to
+  list both. Only `SELECT` and `WITH` are accepted, which is the rule
+  QElectroTech applies to its own custom-query box, not one invented here.
+  An empty result and a failed query are told apart: `row_count` 0 with no
+  `error` means nothing matched, and a typo'd column name says so.
+- **`qet_export` isolates its launch.** SingleApplication keys its socket
+  on `applicationFilePath()`, so a second launch of the same binary path
+  forwards its request to an already-running instance and returns *that*
+  process's answer with no error. The tool copies the binary to a unique
+  temporary path, gives it a private `HOME`, and runs it on the offscreen
+  platform. A symlink would not work: `applicationFilePath()` resolves it
+  back to the real path.
+- **The CLI matches its flags exactly.** `--export-bom out.csv` is the
+  supported form; `--export-bom=out.csv` is not recognised as an export
+  at all, so the application starts its interface instead and a headless
+  run hangs. The tool uses the positional form.
+- **Conductor identity is the hard part of `qet_diff`.** A conductor names
+  its ends with `terminal1`/`terminal2`, and the project format has two
+  schemes: folio-scoped integer ids in older files, terminal-definition
+  uuids plus `element1`/`element2` in newer ones. The integer ids are
+  **renumbered on every save**, so keying on them — which this tool did at
+  first — made all 47 conductors of an untouched folio read as removed and
+  re-added the moment the other side had been through QElectroTech, which
+  is exactly what `qet_edit` produces. They are now keyed by owning element
+  uuid plus terminal, which is stable across a save: measured at 0 colliding
+  keys over 3190 conductors in the 24 shipped examples, and 0 churn on a
+  no-op edit. Where an element predates persisted uuids the end cannot be
+  resolved and keeps a `#`-marked unstable key; the diff then reports
+  `unstable_keys` and says so rather than pretending to be comparable.
+- **Texts, shapes and images have no uuid**, so `qet_diff` cannot say "the same
+  text, edited": an edited text reads as the old one removed and a new one
+  added, both shown. Shapes and images are keyed by position, so a restyle
+  or rescale *is* reported as a change to that item, but a move reads as a
+  removal plus an addition. The folio `version` attribute is left out of the
+  comparison on purpose: QElectroTech rewrites it on every save, and
+  including it made every folio of any re-saved project look edited.
+- **Elements** written before persisted uuids fall back to a positional key,
+  which makes a move in such a file read as a remove plus an add.
+- **`qet_edit` needs a build whose scripting API carries the drawing verbs.**
+  Against an older one it reports exactly which methods are missing and
+  changes nothing. `addElement` and the move/delete verbs shipped with the
+  scripting API; `addConductor`, `rotateElement`, `setElementLabel`,
+  `setElementInfo` and `setFolioTitle` are newer.
+- **`elements_dir` is not optional for `common://` paths.** The sandboxed
+  run has its own empty HOME, so QElectroTech falls back to the compiled-in
+  collection path, which on a machine that never ran `make install` does not
+  exist. The only symptom is `addElement` reporting that a file plainly
+  present "does not resolve to an element". An absolute `.elmt` path works
+  without it.
+- **`set_conductor` changes the whole potential, not one segment.** That is
+  what the application does — a wire number describes a potential — so name
+  a terminal carrying exactly one conductor and the change reaches every
+  conductor electrically joined to it. A terminal several conductors meet
+  at names none of them and is refused, so address a potential from one of
+  its leaves. Property names are the file's own, so `qet_conductors` reads
+  back exactly what was set.
+- **`link_elements` takes a folio for each end**, because a master and its
+  slave are normally on different folios. Whether a pair may be linked is
+  decided by QElectroTech's own `isLinkable()`, so a script cannot make a
+  link the GUI would refuse.
+- **An element must live inside a collection to be placeable.** This is
+  not about the path syntax: an absolute `.elmt` path works, but only if
+  the file sits under a directory QElectroTech knows as a collection.
+  Write it under the tree you pass as `elements_dir` and `qet_edit` can
+  place it, by absolute path or as `common://…`; write it anywhere else
+  and `add_element` reports only "does not resolve to an element".
+- **`qet_element_build` computes the `.elmt` size header, and checks it.**
+  `width`/`height`/`hotspot_x`/`hotspot_y` relate to the drawing by a
+  containment constraint, not a formula — the declared box runs from
+  `(-hotspot_x, -hotspot_y)` to `(width - hotspot_x, height - hotspot_y)`
+  and the drawing must fit inside it. The shipped collection shows authors
+  picking their own margins (one element pads 2 units left and 3 right,
+  another 8 and 2), so there is no convention to copy, only an invariant
+  to satisfy. A drawing that escaped its box is the classic way a
+  hand-written element renders clipped in the collection panel while
+  looking fine in XML.
+- **QElectroTech interrupts a script at 30 s** of its own accord, separately
+  from this tool's `timeout`. A very long operation list will hit that
+  first.
+- **`qet_edit` never writes the input.** It saves to a separate file and
+  diffs the two, so the original is always the thing the diff is against.
@@ -0,0 +1,44 @@
+<definition version="0.100.0" type="element" link_type="master" width="40" height="60" hotspot_x="17" hotspot_y="32">
+    <uuid uuid="{6d3714f6-a0e1-71b3-e4bd-5a35d4cbbec1}"/>
+    <names>
+        <name lang="ar">ملف KA  بمحتفظ مغناطيسي</name>
+        <name lang="ca">Bobina</name>
+        <name lang="cs">Bistabilní remanentní relé</name>
+        <name lang="de">Remanenzrelais</name>
+        <name lang="el">Πηνίο με μανδάλωση</name>
+        <name lang="en">Coil</name>
+        <name lang="es">Bobina KA de remanencia</name>
+        <name lang="fr">Bobine KA à rémanence</name>
+        <name lang="hu">Tekercs</name>
+        <name lang="it">Bobina</name>
+        <name lang="nl">spoel remanent</name>
+        <name lang="nl_BE">Spoel KA remanent</name>
+        <name lang="pl">Cewka przekaźnika remanencyjnego</name>
+        <name lang="pt_BR">Bobina</name>
+        <name lang="ru">Обмотка</name>
+        <name lang="zh">剩磁保持线圈</name>
+    </names>
+    <kindInformations>
+        <kindInformation name="type">plc</kindInformation>
+    </kindInformations>
+    <informations>Author: The QElectroTech team
+License: see http://qelectrotech.org/wiki/doc/elements_license</informations>
+    <description>
+        <rect x="14" y="-8" width="6" height="16" rx="0" ry="0" style="line-style:normal;line-weight:normal;filling:none;color:black" antialias="false"/>
+        <line x1="0" y1="-20" x2="0" y2="-8" end1="none" end2="none" length1="1.5" length2="1.5" style="line-style:normal;line-weight:normal;filling:none;color:black" antialias="false"/>
+        <dynamic_text x="2" y="11.33" z="5" text_width="-1" Halignment="AlignLeft" Valignment="AlignTop" frame="false" rotation="0" keep_visual_rotation="false" text_from="UserText" uuid="{647e33ed-520b-4d80-bbc4-7b31177b8f26}" font="Liberation Sans,4,-1,5,25,0,0,0,0,0,Regular">
+            <text>A2</text>
+        </dynamic_text>
+        <dynamic_text x="2" y="-24.67" z="6" text_width="-1" Halignment="AlignLeft" Valignment="AlignTop" frame="false" rotation="0" keep_visual_rotation="false" text_from="UserText" uuid="{fb1f8de9-70c0-4801-8dc7-12e6bf88d8f5}" font="Liberation Sans,4,-1,5,25,0,0,0,0,0,Regular">
+            <text>A1</text>
+        </dynamic_text>
+        <line x1="0" y1="8" x2="0" y2="20" end1="none" end2="none" length1="1.5" length2="1.5" style="line-style:normal;line-weight:normal;filling:none;color:black" antialias="false"/>
+        <dynamic_text x="30" y="-9.17" z="8" text_width="-1" Halignment="AlignLeft" Valignment="AlignTop" frame="false" rotation="0" keep_visual_rotation="false" text_from="ElementInfo" uuid="{b7fccfc3-05f1-459c-9766-f49a481bd0ff}" font="Liberation Sans,9,-1,5,50,0,0,0,0,0,Regular">
+            <text></text>
+            <info_name>label</info_name>
+        </dynamic_text>
+        <polygon x1="-14" y1="-8" x2="14" y2="-8" x3="20" y3="8" x4="-14" y4="8" antialias="false" style="line-style:normal;line-weight:normal;filling:none;color:black"/>
+        <terminal uuid="{6a87c921-6f5d-4f5c-8673-228a6d13c5c8}" name="A2" x="0" y="20" orientation="s" type="Generic"/>
+        <terminal uuid="{2904e5fa-6bbe-4127-acdd-f92feadd6ece}" name="A1" x="0" y="-20" orientation="n" type="Generic"/>
+    </description>
+</definition>
@@ -0,0 +1,16 @@
+<definition version="0.100.0" type="element" link_type="slave" width="20" height="60" hotspot_x="9" hotspot_y="30">
+    <uuid uuid="{94d56f06-6814-5561-9148-2da3a9c4f900}"/>
+    <names>
+        <name lang="en">PLC Slave Test</name>
+    </names>
+    <kindInformations>
+        <kindInformation name="type">plc</kindInformation>
+        <kindInformation name="state">NO</kindInformation>
+        <kindInformation name="number">1</kindInformation>
+    </kindInformations>
+    <description>
+        <rect x="0" y="-8" width="6" height="16" rx="0" ry="0" style="line-style:normal;line-weight:normal;filling:none;color:black" antialias="false"/>
+        <terminal uuid="{6a87c921-6f5d-4f5c-8673-228a6d13c500}" name="1" x="0" y="20" orientation="s" type="Generic"/>
+        <terminal uuid="{2904e5fa-6bbe-4127-acdd-f92feadd6e00}" name="2" x="0" y="-20" orientation="n" type="Generic"/>
+    </description>
+</definition>
@@ -1,7 +1,7 @@
 #!/bin/bash 

 #Based on raspberry pi 5 8 Gb Trixie
-#sudo apt install git ssh rsync libqt5svg5-dev qt5-qmake qtbase5-dev libkf5widgetsaddons-dev libkf5coreaddons-dev libsqlite3-dev pkgconf libqt5waylandclient5-dev libqt5waylandcompositor5-dev g++ make
+#sudo apt install git ssh rsync libqt5svg5-dev qt5-qmake qtbase5-dev libkf5widgetsaddons-dev libkf5coreaddons-dev pkgconf libqt5waylandclient5-dev libqt5waylandcompositor5-dev g++ make
 #mkdir -p AppImage/0.100.0/aarch64
 # Get GIT sources
 #git clone --recursive https://github.com/qelectrotech/qelectrotech-source-mirror.git
@@ -93,10 +93,7 @@
        <file>ico/22x22/conductor2.png</file>
        <file>ico/22x22/configure.png</file>
        <file>ico/22x22/configure-toolbars.png</file>
-        <file>ico/22x22/diagram_add.png</file>
-        <file>ico/22x22/diagram_del.png</file>
        <file>ico/22x22/dialog-cancel.png</file>
-        <file>ico/22x22/dialog-information.png</file>
        <file>ico/22x22/dialog-ok.png</file>
        <file>ico/22x22/document-close.png</file>
        <file>ico/22x22/document-export.png</file>
@@ -140,8 +137,6 @@
        <file>ico/22x22/go-up.png</file>
        <file>ico/22x22/hotspot.png</file>
        <file>ico/22x22/insert-image.png</file>
-        <file>ico/22x22/pdf-import.png</file>
-        <file>ico/22x22/label.png</file>
        <file>ico/22x22/landscape.png</file>
        <file>ico/22x22/line.png</file>
        <file>ico/22x22/list-add.png</file>
@@ -242,7 +237,6 @@
        <file>ico/16x16/project.png</file>
        <file>ico/16x16/qt.png</file>
        <file>ico/16x16/terminalstrip.png</file>
-        <file>ico/22x22/diagram.png</file>
        <file>ico/22x22/edit-clear-locationbar-rtl.png</file>
        <file>ico/22x22/export-csv.png</file>
        <file>ico/22x22/format-text-subscript.png</file>
@@ -0,0 +1,54 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "elementpreviewdelegate.h"
+
+#include <QWidget>
+
+#include "../qetpalette.h"
+
+/**
+	@brief ElementPreviewDelegate::initStyleOption
+	After the base class has filled the option from the model, replace
+	the icon with one that reads on a dark palette. The adapted icon is
+	built from the pixmap the view is about to draw, at the view's
+	decoration size and device pixel ratio.
+*/
+void ElementPreviewDelegate::initStyleOption(QStyleOptionViewItem *option,
+                                             const QModelIndex &index) const
+{
+	QStyledItemDelegate::initStyleOption(option, index);
+	if (option->icon.isNull() || !QET::Palette::isDark(option->palette))
+		return;
+
+	const qint64 key = option->icon.cacheKey();
+	const auto it = m_dark_icons.constFind(key);
+	if (it != m_dark_icons.constEnd())
+	{
+		option->icon = *it;
+		return;
+	}
+
+	const qreal dpr = option->widget ? option->widget->devicePixelRatio() : 1.0;
+	const QPixmap source = option->icon.pixmap(option->decorationSize, dpr);
+	const QPixmap adapted = QET::Palette::forPalette(source, option->palette);
+	QIcon icon = option->icon;
+	if (adapted.cacheKey() != source.cacheKey())
+		icon = QIcon(adapted);
+	m_dark_icons.insert(key, icon);
+	option->icon = icon;
+}
@@ -0,0 +1,50 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef ELEMENTPREVIEWDELEGATE_H
+#define ELEMENTPREVIEWDELEGATE_H
+
+#include <QHash>
+#include <QIcon>
+#include <QStyledItemDelegate>
+
+/**
+	@brief The ElementPreviewDelegate class
+	Draws the items of an element collection tree with icons that read on
+	the current palette. Element previews are black line art drawn for a
+	white sheet; on a dark palette this delegate hands the view the same
+	picture with its lightness inverted (QET::Palette::forPalette), so the
+	ink is light on the dark row. Colored icons, such as folders, are left
+	alone, and nothing changes on a light palette. Adapted icons are kept
+	per source icon, so a repaint costs a hash lookup.
+*/
+class ElementPreviewDelegate : public QStyledItemDelegate
+{
+	Q_OBJECT
+
+	public:
+		using QStyledItemDelegate::QStyledItemDelegate;
+
+	protected:
+		void initStyleOption(QStyleOptionViewItem *option,
+		                     const QModelIndex &index) const override;
+
+	private:
+		mutable QHash<qint64, QIcon> m_dark_icons;
+};
+
+#endif
@@ -725,7 +725,10 @@ void ElementsCollectionWidget::showThisDir()
 		ElementCollectionItem *eci =
 				elementCollectionItemForIndex(m_showed_index);
 		if (eci)
+		{
 			eci->setBackground(QBrush());
+			eci->setForeground(QBrush());
+		}
 	}

 	m_showed_index = m_index_at_context_menu;
@@ -736,7 +739,11 @@ void ElementsCollectionWidget::showThisDir()
 		ElementCollectionItem *eci =
 				elementCollectionItemForIndex(m_showed_index);
 		if (eci)
+		{
+			// Amber under black, whatever the palette's text color.
 			eci->setBackground(QBrush(QColor(255, 204, 0, 255)));
+			eci->setForeground(QBrush(Qt::black));
+		}
 		search();
 	}
 	else
@@ -755,7 +762,10 @@ void ElementsCollectionWidget::resetShowThisDir()
 		ElementCollectionItem *eci = elementCollectionItemForIndex(
 					m_showed_index);
 		if (eci)
+		{
 			eci->setBackground(QBrush());
+			eci->setForeground(QBrush());
+		}
 	}

 	m_showed_index = QModelIndex();
@@ -20,7 +20,7 @@

 #include "../NameList/nameslist.h"
 #include "../diagramcontext.h"
-#include "pugixml/src/pugixml.hpp"
+#include "pugixml.hpp"

 #include <QIcon>
 #include <QString>
@@ -16,6 +16,8 @@
 	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "elementstreeview.h"
+#include "elementpreviewdelegate.h"
+#include "../qetpalette.h"

 #include "../factory/elementfactory.h"
 #include "../qetgraphicsitem/element.h"
@@ -41,24 +43,11 @@ static int MAX_DND_PIXMAP_HEIGHT = 375;
 ElementsTreeView::ElementsTreeView(QWidget *parent) :
 	QTreeView(parent)
 {
-	// force du noir sur une alternance de blanc (comme le schema) et de gris
-	// clair, avec du blanc sur bleu pas trop fonce pour la selection
-	//
-	// Element icons are rendered with colors read directly from each .elmt
-	// file (almost always black linework, matching printed-schematic
-	// convention) onto a transparent background -- so this view must keep
-	// a light background regardless of the OS/desktop theme, or the icons
-	// become invisible on dark themes. QAbstractItemView paints its rows
-	// using the viewport's palette, not the view's own, so the palette
-	// must be applied to both to actually take effect under every style.
-	QPalette qp = palette();
-	qp.setColor(QPalette::Text,            Qt::black);
-	qp.setColor(QPalette::Base,            Qt::white);
-	qp.setColor(QPalette::AlternateBase,   QColor("#e8e8e8"));
-	qp.setColor(QPalette::Highlight,       QColor("#678db2"));
-	qp.setColor(QPalette::HighlightedText, Qt::black);
-	setPalette(qp);
-	viewport()->setPalette(qp);
+	// Rows follow the application palette. Element previews are black
+	// line art drawn for a white sheet; ElementPreviewDelegate adapts them
+	// to a dark palette, so this view no longer has to force a light one
+	// (bugtracker #335).
+	setItemDelegate(new ElementPreviewDelegate(this));
 }

 /**
@@ -220,7 +209,7 @@ void ElementsTreeView::startElementDrag(const ElementsLocation &location)
 			&elmt_creation_state));
 		if (elmt_creation_state) { return; }

-		QPixmap elmt_pixmap(temp_elmt->pixmap());
+		QPixmap elmt_pixmap(QET::Palette::forPalette(temp_elmt->pixmap(), palette()));
 		QPoint elmt_hotspot(temp_elmt->hotspot());

 			//Adjust the size of the pixmap if he is too big
@@ -17,7 +17,7 @@
 */
 #ifndef NAMES_LIST_H
 #define NAMES_LIST_H
-#include "pugixml/src/pugixml.hpp"
+#include "pugixml.hpp"

 #include <QtXml>
 /**
@@ -35,13 +35,17 @@ AddTerminalToStripCommand::AddTerminalToStripCommand(QSharedPointer<RealTerminal
 	const auto t_label = terminal->label();
 	const auto ts_name = strip->name();

-	const auto str_1 = t_label.isEmpty() ? QObject::tr("Ajouter une borne") :
-									 QObject::tr("Ajouter la borne %1").arg(t_label);
-
-	const auto str_2 = ts_name.isEmpty() ? QObject::tr("à un groupe de bornes") :
-									 QObject::tr("au groupe de bornes %1").arg(ts_name);
-
-	setText(str_1 % " " % str_2);
+	QString text;
+	if (ts_name.isEmpty()) {
+		text = t_label.isEmpty()
+			? QObject::tr("Ajouter une borne à un groupe de bornes")
+			: QObject::tr("Ajouter la borne %1 à un groupe de bornes").arg(t_label);
+	} else {
+		text = t_label.isEmpty()
+			? QObject::tr("Ajouter une borne au groupe de bornes %1").arg(ts_name)
+			: QObject::tr("Ajouter la borne %1 au groupe de bornes %2").arg(t_label, ts_name);
+	}
+	setText(text);
 }

 AddTerminalToStripCommand::AddTerminalToStripCommand(QVector<QSharedPointer<RealTerminal>> terminals, TerminalStrip *strip, QUndoCommand *parent) :
@@ -50,14 +54,11 @@ AddTerminalToStripCommand::AddTerminalToStripCommand(QVector<QSharedPointer<Real
 	m_new_strip{strip}
 {
 	const auto ts_name = strip->name();
+	const auto count = m_terminal.size();

-	const auto str_1 = m_terminal.size() > 1 ? QObject::tr("Ajouter %1 bornes").arg(m_terminal.size()) :
-											   QObject::tr("Ajouter une borne");
-
-	const auto str_2 = ts_name.isEmpty() ? QObject::tr("à un groupe de bornes") :
-										  QObject::tr("au groupe de bornes %1").arg(ts_name);
-
-	setText(str_1 % " " % str_2);
+	setText(ts_name.isEmpty()
+		? QObject::tr("Ajouter %n borne(s) à un groupe de bornes", "", count)
+		: QObject::tr("Ajouter %n borne(s) au groupe de bornes %1", "", count).arg(ts_name));
 }


@@ -137,13 +138,11 @@ void RemoveTerminalFromStripCommand::redo()
 void RemoveTerminalFromStripCommand::setCommandTitle()
 {
 	const auto strip_name = m_strip->name();
+	const auto count = m_terminals.size();

-	const auto str_1 = m_terminals.size()>1 ? QObject::tr("Enlever %1 bornes").arg(m_terminals.size()):
-											  QObject::tr("Enlever une borne");
-
-	const auto str_2 = strip_name.isEmpty() ? QObject::tr("d'un groupe de bornes") :
-											  QObject::tr("du groupe de bornes %1").arg(strip_name);
-	setText(str_1 % " " % str_2);
+	setText(strip_name.isEmpty()
+		? QObject::tr("Enlever %n borne(s) d'un groupe de bornes", "", count)
+		: QObject::tr("Enlever %n borne(s) du groupe de bornes %1", "", count).arg(strip_name));
 }

 /**
@@ -166,19 +165,30 @@ MoveTerminalCommand::MoveTerminalCommand(QSharedPointer<PhysicalTerminal> termin
 			t_label.append(", ");
 		t_label.append(real_t->label());
 	}
+	const auto strip_name = old_strip->name();
+	const auto new_strip_name = new_strip->name();

-	auto strip_name = old_strip->name();
-	auto new_strip_name = new_strip->name();
-
-	auto str_1 = t_label.isEmpty() ? QObject::tr("Déplacer une borne") :
-									 QObject::tr("Déplacer la borne %1").arg(t_label);
-
-	auto str_2 = strip_name.isEmpty() ? QObject::tr(" d'un groupe de bornes") :
-										QObject::tr(" du groupe de bornes %1").arg(strip_name);
-
-	auto str_3 = new_strip_name.isEmpty() ? QObject::tr("vers un groupe de bornes") :
-											QObject::tr("vers le groupe de bornes %1").arg(new_strip_name);
-	setText(str_1 % " " % str_2 % " " % str_3);
+	QString text;
+	if (t_label.isEmpty()) {
+		if (strip_name.isEmpty() && new_strip_name.isEmpty())
+			text = QObject::tr("Déplacer une borne d'un groupe de bornes vers un autre groupe de bornes");
+		else if (strip_name.isEmpty())
+			text = QObject::tr("Déplacer une borne d'un groupe de bornes vers le groupe de bornes %1").arg(new_strip_name);
+		else if (new_strip_name.isEmpty())
+			text = QObject::tr("Déplacer une borne du groupe de bornes %1 vers un autre groupe de bornes").arg(strip_name);
+		else
+			text = QObject::tr("Déplacer une borne du groupe de bornes %1 vers le groupe de bornes %2").arg(strip_name, new_strip_name);
+	} else {
+		if (strip_name.isEmpty() && new_strip_name.isEmpty())
+			text = QObject::tr("Déplacer la borne %1 d'un groupe de bornes vers un autre groupe de bornes").arg(t_label);
+		else if (strip_name.isEmpty())
+			text = QObject::tr("Déplacer la borne %1 d'un groupe de bornes vers le groupe de bornes %2").arg(t_label, new_strip_name);
+		else if (new_strip_name.isEmpty())
+			text = QObject::tr("Déplacer la borne %1 du groupe de bornes %2 vers un autre groupe de bornes").arg(t_label, strip_name);
+		else
+			text = QObject::tr("Déplacer la borne %1 du groupe de bornes %2 vers le groupe de bornes %3").arg(t_label, strip_name, new_strip_name);
+	}
+	setText(text);
 }

 MoveTerminalCommand::MoveTerminalCommand(QVector<QSharedPointer<PhysicalTerminal>> terminals, TerminalStrip *old_strip,
@@ -191,17 +201,18 @@ MoveTerminalCommand::MoveTerminalCommand(QVector<QSharedPointer<PhysicalTerminal
 {
 	const auto strip_name = old_strip->name();
 	const auto new_strip_name = new_strip->name();
+	const auto count = m_terminal.size();

-	const auto str_1 = m_terminal.size() > 1 ? QObject::tr("Déplacer des bornes") :
-											   QObject::tr("Déplacer une borne");
-
-	const auto str_2 = strip_name.isEmpty() ? QObject::tr(" d'un groupe de bornes") :
-											  QObject::tr(" du groupe de bornes %1").arg(strip_name);
-
-	const auto str_3 = new_strip_name.isEmpty() ? QObject::tr("vers un groupe de bornes") :
-												  QObject::tr("vers le groupe de bornes %1").arg(new_strip_name);
-
-	setText(str_1 % " " % str_2 % " " % str_3);
+	QString text;
+	if (strip_name.isEmpty() && new_strip_name.isEmpty())
+		text = QObject::tr("Déplacer %n borne(s) d'un groupe de bornes vers un autre groupe de bornes", "", count);
+	else if (strip_name.isEmpty())
+		text = QObject::tr("Déplacer %n borne(s) d'un groupe de bornes vers le groupe de bornes %1", "", count).arg(new_strip_name);
+	else if (new_strip_name.isEmpty())
+		text = QObject::tr("Déplacer %n borne(s) du groupe de bornes %1 vers un autre groupe de bornes", "", count).arg(strip_name);
+	else
+		text = QObject::tr("Déplacer %n borne(s) du groupe de bornes %1 vers le groupe de bornes %2", "", count).arg(strip_name, new_strip_name);
+	setText(text);
 }

 void MoveTerminalCommand::undo()
@@ -275,3 +275,80 @@ QString NumerotationContext::formatValue(const QStringList &item)
 		return QString("%1").arg(value.toInt(), 3, 10, QChar('0'));
 	return QString::number(value.toInt());
 }
+
+/**
+	@brief NumerotationContext::saveToSettings
+	Save a hash of named NumerotationContexts to QSettings.
+	@param contexts : the named rules to save
+	@param currentRule : the name of the currently active rule
+	@param settings : QSettings instance
+	@param prefix : settings key prefix (e.g. "autonum/conductor")
+*/
+void NumerotationContext::saveToSettings(
+		const QHash<QString, NumerotationContext> &contexts,
+		const QString &currentRule,
+		QSettings &settings,
+		const QString &prefix)
+{
+	settings.setValue(prefix + "/current", currentRule);
+
+	// Clear stale array entries before writing (beginWriteArray does not
+	// remove entries beyond the new size).
+	settings.remove(prefix + "/rules");
+
+	QStringList names = contexts.keys();
+	settings.beginWriteArray(prefix + "/rules", names.size());
+	for (int i = 0; i < names.size(); ++i) {
+		settings.setArrayIndex(i);
+		const QString &name = names.at(i);
+		const NumerotationContext &nc = contexts.value(name);
+
+		settings.setValue("name", name);
+
+		// Serialize context to XML string
+		QDomDocument doc;
+		NumerotationContext nc_copy = nc;
+		QDomElement root = nc_copy.toXml(doc, "context");
+		doc.appendChild(root);
+		settings.setValue("xml", doc.toString());
+	}
+	settings.endArray();
+}
+
+/**
+	@brief NumerotationContext::loadFromSettings
+	Load named NumerotationContexts from QSettings.
+	@param settings : QSettings instance
+	@param prefix : settings key prefix (e.g. "autonum/conductor")
+	@return pair of (hash of named rules, name of current rule)
+*/
+QPair<QHash<QString, NumerotationContext>, QString> NumerotationContext::loadFromSettings(
+		QSettings &settings,
+		const QString &prefix)
+{
+	QPair<QHash<QString, NumerotationContext>, QString> result;
+	QHash<QString, NumerotationContext> &contexts = result.first;
+	QString &currentRule = result.second;
+
+	currentRule = settings.value(prefix + "/current").toString();
+
+	int size = settings.beginReadArray(prefix + "/rules");
+	for (int i = 0; i < size; ++i) {
+		settings.setArrayIndex(i);
+		QString name = settings.value("name").toString();
+		QString xmlStr = settings.value("xml").toString();
+
+		if (name.isEmpty() || xmlStr.isEmpty()) continue;
+
+		QDomDocument doc;
+		if (!doc.setContent(xmlStr)) continue;
+
+		QDomElement root = doc.documentElement();
+		NumerotationContext nc;
+		nc.fromXml(root);
+		contexts.insert(name, nc);
+	}
+	settings.endArray();
+
+	return result;
+}
@@ -21,6 +21,8 @@
 #include <QStringList>
 #include <QVariant>
 #include <QDomElement>
+#include <QHash>
+#include <QSettings>

 /**
 	This class represents a numerotation context, i.e. the data (type, value, increase)
@@ -60,6 +62,14 @@ class NumerotationContext
 		/// UI preview of a part's value matches what actually gets rendered.
 	static QString formatValue(const QStringList &item);

+	static void saveToSettings(const QHash<QString, NumerotationContext> &contexts,
+				   const QString &currentRule,
+				   QSettings &settings,
+				   const QString &prefix);
+	static QPair<QHash<QString, NumerotationContext>, QString> loadFromSettings(
+				   QSettings &settings,
+				   const QString &prefix);
+
 	private:
 	QStringList content_;
 };
@@ -505,7 +505,10 @@ void BorderTitleBlock::draw(QPainter *painter)
 {
 	//Set the QPainter
 	painter -> save();
-	QPen pen(Qt::black);
+		//Use a pen color that contrasts with the background
+	QColor border_color = Diagram::background_color.lightness() < 128
+			       ? QColor(Qt::white) : QColor(Qt::black);
+	QPen pen(border_color);
 	painter -> setPen(pen);
 	painter -> setBrush(Qt::NoBrush);

@@ -893,10 +896,20 @@ void BorderTitleBlock::updateDiagramContextForTitleBlock(
 	// An empty page-level value means the variable was auto-added to the
 	// folio's Custom tab (#495) but never actually set by the user, so it
 	// must not shadow a real project-level value of the same name (#531).
+	//
+	// That guard has to stop short of removing the key outright, though
+	// (#973). TitleBlockTemplate::interpreteVariables() only replaces a
+	// "%name"/"%{name}" placeholder when "name" is a key in this context at
+	// all -- an unset variable that never makes it in is left as its own
+	// literal placeholder text in the rendered title block, not blank.
+	// So an empty page-level value is skipped only when a real project-level
+	// one is already there to show through; otherwise it still goes in
+	// empty, which is what makes the placeholder resolve to nothing.
 	DiagramContext context = initial_context;
 	foreach (QString key, additional_fields_.keys()) {
-		if (!additional_fields_[key].toString().isEmpty())
-			context.addValue(key, additional_fields_[key]);
+		const QVariant value = additional_fields_[key];
+		if (!value.toString().isEmpty() || !context.contains(key))
+			context.addValue(key, value);
 	}

 	// ... overridden by the historical and/or dynamically generated fields
@@ -499,6 +499,7 @@ void ConductorProperties::applyForEqualAttributes(QList<ConductorProperties> lis
 		horiz_rotate_text    = cp.horiz_rotate_text;
 		m_vertical_alignment = cp.m_vertical_alignment;
 		m_horizontal_alignment = cp.m_horizontal_alignment;
+		style                = cp.style;

 		return;
 	}
@@ -555,6 +556,18 @@ void ConductorProperties::applyForEqualAttributes(QList<ConductorProperties> lis
 		m_dash_size = i_value;
 	equal = true;

+		//style
+	Qt::PenStyle pen_style;
+	pen_style = clist.first().style;
+	for(ConductorProperties cp : clist)
+	{
+		if (cp.style != pen_style)
+			equal = false;
+	}
+	if (equal)
+		style = pen_style;
+	equal = true;
+
 		//text
 	s_value = clist.first().text;
 	for(ConductorProperties cp : clist)
@@ -17,6 +17,8 @@
 */
 #include "projectdatabase.h"

+#include "sqlreadonly.h"
+
 #include "../diagram.h"
 #include "../diagramposition.h"
 #include "../elementprovider.h"
@@ -28,13 +30,15 @@
 #include "../qetproject.h"

 #include <QLocale>
+#include <QFile>
 #include <QRegularExpression>
-#include <QSqlError>
-
 #include <QSqlDriver>
+#include <QSqlError>
 #include <sqlite3.h>


+
+
 /**
 	@brief projectDataBase::projectDataBase
 	Default constructor
@@ -208,6 +212,12 @@ bool projectDataBase::isReadOnlySelect(const QString &query, QString *error)
 */
 QSqlQuery projectDataBase::newQuery(const QString &query, QString *error) {
 	QString reason;
+
+	// First gate: which kind of statement is acceptable here at all. A
+	// textual check is the right tool for that and the wrong tool for
+	// anything else -- see isReadOnlySelect()'s own comment. It is what
+	// keeps ATTACH, BEGIN and PRAGMA out, none of which SQLite itself
+	// considers writes.
 	if (!isReadOnlySelect(query, &reason)) {
 		qWarning().noquote() << "projectDataBase::newQuery: rejected query:" << reason << "--" << query;
 		if (error) {
@@ -215,6 +225,24 @@ QSqlQuery projectDataBase::newQuery(const QString &query, QString *error) {
 		}
 		return QSqlQuery(m_data_base);
 	}
+
+	// Second gate, and the one that actually enforces read-only: SQLite is
+	// asked about the statement it compiled, instead of the text being read
+	// for clues. The first gate cannot see through a CTE prefix --
+	// "WITH x AS (SELECT 1) DELETE FROM element" starts with WITH, contains
+	// no semicolon, and deletes every row. That matters beyond the
+	// custom-query box, because this path is reachable from a file: a
+	// <graphics_table>'s saved <query> is read straight out of the .qet by
+	// ProjectDBModel::fromXml() and executed by fillValue(), so opening or
+	// exporting a project someone else produced would have been enough.
+	if (!QETSql::isSingleReadOnlyStatement(sqliteHandle(&m_data_base), query, &reason)) {
+		qWarning().noquote() << "projectDataBase::newQuery: rejected query:" << reason << "--" << query;
+		if (error) {
+			*error = reason;
+		}
+		return QSqlQuery(m_data_base);
+	}
+
 	return QSqlQuery(query, m_data_base);
 }

@@ -1245,7 +1273,6 @@ void projectDataBase::bindDiagramInfoValues(QSqlQuery &query, Diagram *diagram)
 	}
 }

-#ifdef QET_EXPORT_PROJECT_DB
 /**
 	@brief projectDataBase::sqliteHandle
 	@param db
@@ -1263,6 +1290,7 @@ sqlite3 *projectDataBase::sqliteHandle(QSqlDatabase *db)
 	return handle;
 }

+#ifdef QET_EXPORT_PROJECT_DB

 /**
 * @brief projectDataBase::exportDb
@@ -1298,27 +1326,19 @@ void projectDataBase::exportDb(projectDataBase *db,
 		return;
 	}

-	QString connection_name("export_project_db_" % db->project()->uuid().toString());
-
-	if (true) //Enter in a scope only to nicely use QSqlDatabase::removeDatabase just after the end of the scope
-	{
-		auto file_db = QSqlDatabase::addDatabase("QSQLITE", connection_name);
-		file_db.setDatabaseName(path_);
-		if (!file_db.open()) {
-			return;
-		}
-
-		auto memory_db_handle = sqliteHandle(&db->m_data_base);
-		auto file_db_handle = sqliteHandle(&file_db);
-
-		auto sqlite_backup = sqlite3_backup_init(file_db_handle, "main", memory_db_handle, "main");
-		if (sqlite_backup)
-		{
-			sqlite3_backup_step(sqlite_backup, -1);
-			sqlite3_backup_finish(sqlite_backup);
-		}
-		file_db.close();
+	// VACUUM INTO requires the destination not to exist. QFileDialog may ask
+	// about overwriting, but it does not remove the existing file for us.
+	if (QFile::exists(path_) && !QFile::remove(path_)) {
+		qWarning() << "Unable to replace project database export:" << path_;
+		return;
+	}
+
+	// VACUUM INTO creates a standalone copy of the current database without
+	// requiring access to the SQLite driver's native connection handle.
+	const auto escaped_path = path_.replace("'", "''");
+	QSqlQuery query(db->m_data_base);
+	if (!query.exec("VACUUM INTO '" % escaped_path % "'")) {
+		qWarning() << "Unable to export project database:" << query.lastError().text();
 	}
-	QSqlDatabase::removeDatabase(connection_name);
 }
 #endif
@@ -61,6 +61,26 @@ class projectDataBase : public QObject
 		QETProject *project() const;
 		QSqlQuery newQuery(const QString &query = QString(), QString *error = nullptr);
 		static bool isReadOnlySelect(const QString &query, QString *error = nullptr);
+
+			/**
+				The most rows any caller reads out of one query result.
+
+				A SELECT is not bounded by how much data the project holds:
+				SQLite produces rows lazily, so a query that never stops
+				producing them makes the loop that reads them never stop
+				either. A recursive CTE does exactly that in one line, and
+				a <graphics_table>'s <query> is stored in the .qet and run
+				on load -- so the text can arrive from a file rather than
+				from the person at the keyboard, and opening that file is
+				the whole attack.
+
+				100000 is far above any real result: the largest table in
+				the shipped examples is 396 rows. It is a backstop, not a
+				page size -- a caller that hits it has almost certainly
+				been handed something it should not run to completion, and
+				says so rather than truncating quietly.
+			*/
+		static constexpr int MaxResultRows = 100000;
 		QSqlDatabase database() const {return m_data_base;}
 		int excludedConductorCount() const;

@@ -135,9 +155,14 @@ class projectDataBase : public QObject
 				  m_cascade_remove_conductor_query,
 				  m_cascade_remove_element_query;

+	public:
+		// Deliberately outside the QET_EXPORT_PROJECT_DB guard below:
+		// newQuery() needs the raw connection to ask SQLite whether a
+		// query only reads, and that check runs in every build.
+		static sqlite3 *sqliteHandle(QSqlDatabase *db);
+
 #ifdef QET_EXPORT_PROJECT_DB
 	public:
-		static sqlite3 *sqliteHandle(QSqlDatabase *db);
 		static void exportDb(projectDataBase *db,
 				     QWidget *parent = nullptr,
 				     const QString &caption = QString(),
@@ -0,0 +1,134 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "sqlreadonly.h"
+
+#include <QCoreApplication>
+
+#include <sqlite3.h>
+
+namespace QETSql {
+
+/**
+	@brief QETSql::isSingleReadOnlyStatement
+	Ask SQLite itself whether @p query is exactly one statement, and whether
+	that statement only reads.
+
+	Why SQLite is asked rather than the text inspected: a check on the
+	query's first keyword cannot see what the statement actually does.
+	SQLite has allowed a CTE prefix in front of a data-modifying statement
+	since 3.8.3, so
+
+	@code
+	WITH x AS (SELECT 1) DELETE FROM element
+	@endcode
+
+	begins with WITH, contains no semicolon, and deletes every row.
+	sqlite3_stmt_readonly() reports on the statement SQLite compiled, not
+	on how it was spelled, so the same query is correctly refused here
+	while an ordinary WITH ... SELECT still passes.
+
+	The statement is compiled and immediately finalised; sqlite3_prepare_v2()
+	does not run it, so nothing is executed to reach this verdict.
+
+	This is a read-only test, NOT a statement-type allowlist: SQLite
+	considers ATTACH, BEGIN and several PRAGMAs read-only too, because none
+	of them change the contents of the database. Callers that need to
+	restrict which *kind* of statement is acceptable must say so separately
+	-- projectDataBase::newQuery() keeps isReadOnlySelect() in front of this
+	for exactly that reason.
+
+	@param handle the connection the query would run on. A null handle is
+	refused rather than waved through: without it there is nothing to ask,
+	and guessing from the text is the weakness this exists to replace.
+	@param query the raw SQL text
+	@param error set to a human-readable reason when this returns false
+	@return true if @p query is a single, read-only statement
+*/
+bool isSingleReadOnlyStatement(sqlite3 *handle, const QString &query, QString *error)
+{
+	if (error) {
+		error->clear();
+	}
+
+	if (!handle) {
+		if (error) {
+			*error = QCoreApplication::translate("QETSql",
+				"Impossible de vérifier la requête : "
+				"aucune connexion SQLite disponible.");
+		}
+		return false;
+	}
+
+	const QByteArray utf8 = query.toUtf8();
+	sqlite3_stmt *statement = nullptr;
+	const char *tail = nullptr;
+
+	if (sqlite3_prepare_v2(handle, utf8.constData(), utf8.size(),
+			       &statement, &tail) != SQLITE_OK)
+	{
+		if (error) {
+			*error = QCoreApplication::translate("QETSql",
+					"Requête SQL invalide : %1")
+				 .arg(QString::fromUtf8(sqlite3_errmsg(handle)));
+		}
+		sqlite3_finalize(statement);
+		return false;
+	}
+
+	// Whitespace or a bare comment compiles successfully to no statement
+	// at all, and sqlite3_stmt_readonly() must not be handed that.
+	if (!statement) {
+		if (error) {
+			*error = QCoreApplication::translate("QETSql",
+				"La requête ne contient aucune instruction.");
+		}
+		return false;
+	}
+
+	const bool read_only = sqlite3_stmt_readonly(statement) != 0;
+	sqlite3_finalize(statement);
+
+	if (!read_only) {
+		if (error) {
+			*error = QCoreApplication::translate("QETSql",
+				"Seules les requêtes en lecture seule sont autorisées : "
+				"cette requête modifierait la base de données.");
+		}
+		return false;
+	}
+
+	// tail points just past the first statement, semicolon included.
+	// Anything left once semicolons and spacing are stripped is a second
+	// statement -- caught structurally here, where "SELECT ';'" is a
+	// perfectly ordinary query rather than a suspicious string.
+	if (tail) {
+		QString rest = QString::fromUtf8(tail);
+		rest.remove(QLatin1Char(';'));
+		if (!rest.trimmed().isEmpty()) {
+			if (error) {
+				*error = QCoreApplication::translate("QETSql",
+					"Une seule requête est autorisée.");
+			}
+			return false;
+		}
+	}
+
+	return true;
+}
+
+} // namespace QETSql
@@ -0,0 +1,43 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef SQLREADONLY_H
+#define SQLREADONLY_H
+
+#include <QString>
+
+struct sqlite3;
+
+/**
+	Deciding whether a piece of SQL only reads.
+
+	Deliberately its own translation unit, depending on nothing but QString
+	and SQLite: it is the enforcement point for every query QElectroTech
+	runs against a project database, including queries that arrive from
+	outside the application (a .qet file's saved report/table query), so it
+	is worth being able to test it in isolation -- see
+	tests/qttest/tst_sqlreadonly.cpp, which links this file and nothing
+	else of QElectroTech.
+*/
+namespace QETSql {
+
+	bool isSingleReadOnlyStatement(sqlite3 *handle,
+				       const QString &query,
+				       QString *error = nullptr);
+}
+
+#endif // SQLREADONLY_H
@@ -26,6 +26,7 @@
 #include "diagramposition.h"
 #include "factory/elementfactory.h"
 #include "qetapp.h"
+#include "qetpalette.h"
 #include "qetgraphicsitem/ViewItem/qetgraphicstableitem.h"
 #include "qetgraphicsitem/conductor.h"
 #include "qetgraphicsitem/conductortextitem.h"
@@ -283,10 +284,11 @@ void Diagram::drawBackground(QPainter *p, const QRectF &r) {
 			 * if background color is black,
 			 * then grid spots shall be white,
 			 * else they shall be black in color.
+			 * A view that shows the sheet with its lightness inverted
+			 * gets softer dots, see QET::Palette::gridDotColor.
 			 */
 		QPen pen;
-		Diagram::background_color == Qt::black? pen.setColor(Qt::white)
-							  : pen.setColor(Qt::black);
+		pen.setColor(QET::Palette::gridDotColor(Diagram::background_color, m_inverted_lightness));
 		pen.setCosmetic(true);
 		p->setPen(pen);

@@ -1707,10 +1709,7 @@ bool Diagram::fromXml(QDomElement &document,
 		//Get the top left corner of the rectangle that contain all added items
 		QRectF items_rect;
 		for (auto item : added_items) {
-			items_rect = items_rect.united(
-						item->mapToScene(
-							item->boundingRect()
-							).boundingRect());
+			items_rect = items_rect.united(item->mapToScene(item->boundingRect()).boundingRect());
 		}

 		QPointF point_ = items_rect.topLeft();
@@ -1718,8 +1717,12 @@ bool Diagram::fromXml(QDomElement &document,
 						position.y() - point_.y()));

 			//Translate all added items
-		for (auto qgi : added_items)
+		for (auto qgi : added_items) {
 			qgi->setPos(qgi->pos() += pos_);
+		}
+	}
+	else
+	{
 	}

 	  // Load conductor
@@ -123,6 +123,7 @@ class Diagram : public QGraphicsScene
 		qreal diagram_qet_version_;

 		bool draw_grid_;
+		bool m_inverted_lightness = false;
 		bool use_border_;
 		bool draw_guides_;
 		QList<Diagram::Guide> m_guides_list;
@@ -222,6 +223,7 @@ class Diagram : public QGraphicsScene
 		ExportProperties applyProperties(const ExportProperties &);
 		void setDisplayGrid(bool);
 		bool displayGrid();
+		void setInvertedLightness(bool);
 		void setDisplayGuides(bool);
 		bool displayGuides();
 		void updateProjectGuides(const QList<GuideProperties> &guides);
@@ -355,6 +357,18 @@ inline void Diagram::setDisplayGrid(bool dg) {
 	draw_grid_ = dg;
 }

+/**
+	@brief Diagram::setInvertedLightness
+	Tell the diagram whether the view painting it will show the result
+	with its lightness inverted (PaletteGraphicsView on a dark palette).
+	drawBackground draws a softer grid in that case. Printing
+	and export never set this.
+	@param inverted
+*/
+inline void Diagram::setInvertedLightness(bool inverted) {
+	m_inverted_lightness = inverted;
+}
+
 /**
 	@brief Diagram::displayGrid
 	@return draw_grid_ true if the grid is drawn, false otherwise.
@@ -151,8 +151,8 @@ bool DiagramContext::operator!=(const DiagramContext &dc) const
 void DiagramContext::toXml(QDomElement &e, const QString &tag_name) const
 {
 	foreach (QString key, keys()) {
-		if ((tag_name == "elementInformation") &&
-			(m_content[key].toString().trimmed().isEmpty())) {
+		const QString raw = m_content[key].toString();
+		if ((tag_name == "elementInformation") && raw.trimmed().isEmpty()) {
 			continue;
 		}
 		QDomElement property = e.ownerDocument().createElement(tag_name);
@@ -161,7 +161,15 @@ void DiagramContext::toXml(QDomElement &e, const QString &tag_name) const
 		property.removeAttribute("name");
 		property.setAttribute("show", m_content_show[key]);
 		property.setAttribute("name", key);
-		QDomText value = e.ownerDocument().createTextNode(m_content[key].toString().trimmed());
+		// Trim stray leading/trailing whitespace around real content, but
+		// not a value that IS whitespace: unconditionally trimming an
+		// all-whitespace string collapses it to "", which is silently
+		// indistinguishable from a value that was never set. A title-block
+		// custom variable set to a single space -- a workaround for #973,
+		// where an unset variable renders as its own literal placeholder --
+		// would otherwise vanish on the very next save.
+		const QString stored = raw.trimmed().isEmpty() ? raw : raw.trimmed();
+		QDomText value = e.ownerDocument().createTextNode(stored);
 		property.appendChild(value);
 		e.appendChild(property);
 	}
@@ -17,7 +17,7 @@
 */
 #ifndef DIAGRAM_CONTEXT_H
 #define DIAGRAM_CONTEXT_H
-#include "pugixml/src/pugixml.hpp"
+#include "pugixml.hpp"

 #include <QDomElement>
 #include <QHash>
@@ -67,7 +67,19 @@ m_preview_item(nullptr)
 			dummy_diagram->setDisplayGrid(false);
 			dummy_diagram->fromXml(diagram_node, QPointF(0, 0), false, nullptr);

+			// Compute bounding rect of TOP-LEVEL items only (matching fromXml's added_items logic)
+			// Child items (DynamicElementTextItem, Terminal) are NOT included - they move with parents
+			QRectF top_level_rect;
+			for (auto *item : dummy_diagram->items()) {
+				if (!item->parentItem()) {
+					top_level_rect = top_level_rect.united(
+								item->mapToScene(item->boundingRect()).boundingRect());
+				}
+			}
+			m_items_top_left = top_level_rect.topLeft();
+
 			QRectF scene_rect = dummy_diagram->itemsBoundingRect();
+
 			if (!scene_rect.isEmpty()) {
 				QPixmap pixmap(scene_rect.toAlignedRect().size());
 				pixmap.fill(Qt::transparent);
@@ -80,10 +92,11 @@ m_preview_item(nullptr)
 			}
 		}

-		if (m_preview_item) {
-			m_preview_item->setPos(Diagram::snapToGrid(pos));
-			m_preview_item->setOpacity(0.6);
-			m_diagram->addItem(m_preview_item);
+	if (m_preview_item) {
+		QPointF snapped = Diagram::snapToGrid(pos);
+		m_preview_item->setPos(snapped);
+		m_preview_item->setOpacity(0.6);
+		m_diagram->addItem(m_preview_item);
 			m_running = true;
 		}

@@ -117,6 +130,7 @@ void DiagramEventAddMacro::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
 {
 	if (m_preview_item) {
 		const auto pos_{Diagram::snapToGrid(event->scenePos())};
+
 		m_preview_item->setPos(pos_);

 		if (m_status_bar) {
@@ -141,7 +155,8 @@ void DiagramEventAddMacro::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
 			emit finish();
 		}
 		else if (event->button() == Qt::LeftButton) {
-			addMacro(Diagram::snapToGrid(event->scenePos()));
+			QPointF snapped = Diagram::snapToGrid(event->scenePos());
+			addMacro(snapped);
 		}
 	}
 	event->setAccepted(true);
@@ -238,10 +253,9 @@ void DiagramEventAddMacro::addMacro(QPointF final_pos)

 	if (!diagram_node.isNull()) {
 		QDomElement cloned_node = diagram_node.cloneNode(true).toElement();
-
 		DiagramContent pasted_content;

-		m_diagram->fromXml(cloned_node, final_pos, false, &pasted_content);
+		m_diagram->fromXml(cloned_node, final_pos + m_items_top_left, false, &pasted_content);
 		m_diagram->refreshContents();

 			// Prevent PasteDiagramCommand from erasing labels (BMK)
@@ -40,6 +40,7 @@ private:
 	QDomDocument m_macro_doc;
 	QGraphicsPixmapItem *m_preview_item;
 	QPointer<QStatusBar> m_status_bar;
+	QPointF m_items_top_left;	// top-left of bounding rect of top-level items in the macro (for correct placement offset)
 };

 #endif // DIAGRAMEVENTADDMACRO_H
@@ -22,6 +22,7 @@
 #include "../qetapp.h"
 #include "../qetdiagrameditor.h"
 #include "../qetgraphicsitem/conductor.h"
+#include "../qetproject.h"

 #include <QSettings>

@@ -40,6 +41,7 @@
 	DiagramEventAddPaste::DiagramEventAddPaste(Diagram *diagram, const QPointF &start_pos) :
 	DiagramEventInterface(diagram)
 {
+	Q_UNUSED(start_pos);  // items stay at their original XML position
 		//DiagramEventInterface::init() is called by Diagram::setEventInterface
 		//only when it is replacing an earlier interface, so call it here as
 		//DiagramEventAddMacro does.
@@ -51,8 +53,25 @@
 	QDomDocument document_xml;
 	if (!document_xml.setContent(clipboard_text)) return;

+		//Batch the database work the same way project loading does
+		//(QETProject::readProjectXml): without this, every addItem()
+		//below emits dataBaseUpdated(), which makes each connected
+		//table model re-run its full SQL query -- ~77 queries for a
+		//typical paste, i.e. the multi-second stall on Ctrl+V.
+	auto *db = m_diagram->project() ? m_diagram->project()->dataBase() : nullptr;
+	if (db) {
+		db->blockSignals(true);
+		db->setUpdateBlocked(true);
+	}
+
 		//Load items at their original XML coordinates.
 	m_diagram->fromXml(document_xml, QPointF(), false, &m_content);
+
+	if (db) {
+		db->blockSignals(false);
+		db->setUpdateBlocked(false);
+		db->updateDB();
+	}
 	if (!m_content.count()) return;

 	const QList<QGraphicsItem *> movable = m_content.items(MovableItems);
@@ -85,33 +104,23 @@
 	};
 	const QPointF grid_origin = snapGrid(top_left);

-		//Move the group to the cursor, rather than the cursor to the
-		//group. Both put the copy under the pointer, but warping the
-		//pointer also drags it back to the original's position, so the
-		//copy appears exactly on top of what was copied until the mouse
-		//is moved -- which is the thing pasting under the cursor was
-		//meant to avoid (issue #913). Taking the pointer away from
-		//where the user put it is also its own surprise.
-	m_group_origin = snapGrid(start_pos);
-	const QPointF offset = m_group_origin - grid_origin;
-
-		//Store each item's position after the move. moveTo() applies a
+		//Store each item's original position.  moveTo() applies a
 		//grid-snapped delta from the baseline to these, so items
 		//preserve their layout and move in whole grid steps.
 	for (auto *item : movable) {
-		item->setPos(item->pos() + offset);
 		m_relative_pos.insert(item, item->pos());
 	}
+	m_group_origin = grid_origin;

-		//The conductors were laid out against the old terminal
+		//The conductors were laid out against the original terminal
 		//positions, so re-route them before anything is drawn.
 	const QList<Conductor *> conductors = m_content.conductors(DiagramContent::AnyConductor);
 	for (auto *conductor : conductors) {
 		conductor->updatePath();
 	}

-		//The baseline is known now, so moveTo() does not have to
-		//capture one from the first mouse movement.
+		//The baseline is the group's grid-snapped origin, so moveTo()
+		//does not have to capture one from the first mouse movement.
 	m_initial_cursor = m_group_origin;
 	m_baseline_captured = true;

@@ -125,6 +134,14 @@
 			if (const auto qde = QETApp::diagramEditorAncestorOf(view)) {
 				m_status_bar = qde->statusBar();
 			}
+				//Warp the cursor to the group's grid-snapped origin so
+				//the actual cursor position matches m_initial_cursor.
+				//Without this the first mouseMoveEvent computes a large
+				//delta (cursor is still at the Ctrl+V press location)
+				//and the items jump on first touch.
+			const QPoint view_pos = view->mapFromScene(m_initial_cursor);
+			const QPoint global_pos = view->viewport()->mapToGlobal(view_pos);
+			QCursor::setPos(global_pos);
 		}
 	}
 	showHint();
@@ -29,7 +29,14 @@
 */
 DiagramEventAddText::DiagramEventAddText(Diagram *diagram) :
 	DiagramEventInterface(diagram)
-{}
+{
+		//The tool is armed from the moment it is attached: the next left
+		//click places a text. DiagramView::keyPressEvent() asks
+		//Diagram::eventInterfaceIsRunning() -- which is isRunning(), i.e.
+		//m_running -- before letting Escape through to the tool, so without
+		//this the view swallows Escape and the tool cannot be cancelled.
+	m_running = true;
+}

 /**
 	@brief DiagramEventAddText::~DiagramEventAddText
@@ -52,6 +59,8 @@ void DiagramEventAddText::mousePressEvent(QGraphicsSceneMouseEvent *event)
 										event->scenePos()));
 		text->setTextInteractionFlags(Qt::TextEditorInteraction);
 		text->setFocus(Qt::MouseFocusReason);
+			//Placed: the tool is done before it announces it.
+		m_running = false;
 		emit finish();
 		event->setAccepted(true);
 	}
@@ -39,7 +39,9 @@
 #include "ElementsCollection/xmlelementcollection.h"
 #include "NameList/nameslist.h"
 #include "elementdialog.h"
+#include <QApplication>
 #include <QDropEvent>
+#include <QPainter>
 #include <QPointer>

 /**
@@ -48,7 +50,7 @@
 	@param parent Le QWidget parent de cette vue de schema
 */
 DiagramView::DiagramView(Diagram *diagram, QWidget *parent) :
-	QGraphicsView (parent),
+	PaletteGraphicsView (parent),
 	m_diagram (diagram)
 {
 	grabGesture(Qt::PinchGesture);
@@ -443,6 +445,82 @@ void DiagramView::pasteHere()
 	paste(mapToScene(m_paste_here_pos));
 }

+/**
+	@brief DiagramView::duplicate
+	Copy the current selection and place the copy at @p stepOffset grid
+	steps from it, landing immediately rather than following the cursor
+	like Ctrl+V does (bugtracker #991). @p stepOffset comes from
+	DuplicateOffsetDialog: (1, 0) is one grid step right, (0, -1) is one
+	grid step up, and so on -- QET's own scene axes, X right and Y down.
+
+	No interactive placement step on purpose: the point of a duplicate
+	shortcut is unattended, repeatable stamping (configure the offset
+	once, then tap Ctrl+D to lay out a row), which following the cursor
+	would interrupt on every press. QET already reselects whatever a
+	paste just added (see PasteDiagramCommand::redo()), so the next
+	Ctrl+D naturally continues from the copy just placed, not the
+	original -- a press-and-hold row falls out of that for free, with no
+	special-casing needed here for "keep going from the last one".
+
+	The offset is applied by hand rather than by asking paste()/
+	Diagram::fromXml() to place the copy at a target position. Both of
+	those feed the position through Diagram::snapToGrid(), which reads
+	QApplication::keyboardModifiers() and rounds to the nearest PIXEL
+	instead of the grid whenever Ctrl is held -- and Ctrl is always held
+	here, this action's own shortcut being Ctrl+D. Measured the hard way
+	before settling on this: routing the offset through paste() first
+	produced copies off-grid on both axes, by an amount that tracked the
+	selection's own bounding-box geometry rather than being a fixed
+	error. fromXml() is instead called with no position at all, which
+	leaves every item at its source coordinates (landing the copy
+	exactly on top of the originals -- (0, 0) is not a position, this is
+	"keep the source coordinates"), and the offset is added directly
+	with setPos(). A plain addition cannot be off by a rounding rule
+	that never runs.
+
+	Conductors are not in the translated set: fromXml() itself does not
+	reposition them either -- they are loaded from XML after elements
+	are already in their final place and take their geometry from their
+	terminals, which have already moved with the elements that own
+	them. Likewise dynamic element texts are not translated separately:
+	they are children of their element and move with it under Qt's
+	normal parent-child transform.
+*/
+void DiagramView::duplicate(const QPoint &stepOffset)
+{
+	if (!isInteractive() || m_diagram->isReadOnly()) return;
+
+	const QList<QGraphicsItem *> selection = m_diagram->selectedItems();
+	if (selection.isEmpty()) return;
+
+	QSettings settings;
+	const int x_grid = settings.value(QStringLiteral("diagrameditor/Xgrid"),
+									  Diagram::xGrid).toInt();
+	const int y_grid = settings.value(QStringLiteral("diagrameditor/Ygrid"),
+									  Diagram::yGrid).toInt();
+	const QPointF offset(stepOffset.x() * x_grid, stepOffset.y() * y_grid);
+
+	// Mirrors copy(), but does not touch the system clipboard: Ctrl+D
+	// should not clobber whatever the user last copied with Ctrl+C.
+	QDomDocument document = m_diagram->toXml(false, true);
+
+	DiagramContent pasted;
+	// No position argument -- see the function comment above for why
+	// the offset is not passed here.
+	m_diagram->fromXml(document, QPointF(), false, &pasted);
+	if (!pasted.count()) return;
+
+	const int movable = DiagramContent::Elements | DiagramContent::TextFields
+					   | DiagramContent::Images | DiagramContent::Shapes
+					   | DiagramContent::Tables | DiagramContent::TerminalStrip;
+	for (QGraphicsItem *item : pasted.items(movable))
+		item->setPos(item->pos() + offset);
+
+	m_diagram->clearSelection();
+	m_diagram->undoStack().push(new PasteDiagramCommand(m_diagram, pasted));
+	adjustSceneRect();
+}
+
 /**
 	Manage the events press click :
 	 *  click to add an independent text field
@@ -1081,6 +1159,16 @@ bool DiagramView::event(QEvent *e) {
 	return(QGraphicsView::event(e));
 }

+/**
+	@brief DiagramView::paintingInverted
+	Reimplemented from PaletteGraphicsView: tell the diagram it is being
+	drawn for an inverted display, so it softens its grid.
+*/
+void DiagramView::paintingInverted(bool inverted)
+{
+	m_diagram->setInvertedLightness(inverted);
+}
+
 /**
 	@brief DiagramView::paintEvent
 	Reimplemented from QGraphicsView
@@ -1088,7 +1176,7 @@ bool DiagramView::event(QEvent *e) {
 */
 void DiagramView::paintEvent(QPaintEvent *event)
 {
-	QGraphicsView::paintEvent(event);
+	PaletteGraphicsView::paintEvent(event);

 	if (m_free_rubberbanding && m_free_rubberband.count() >= 3)
 	{
@@ -22,7 +22,7 @@
 #include "titleblock/templatelocation.h"

 #include <QClipboard>
-#include <QGraphicsView>
+#include "palettegraphicsview.h"

 class Conductor;
 class Diagram;
@@ -35,7 +35,7 @@ class QGestureEvent;
 	This class provides a widget to render an electric diagram in an editable,
 	interactive way.
 */
-class DiagramView : public QGraphicsView
+class DiagramView : public PaletteGraphicsView
 {
 	Q_OBJECT
 	
@@ -84,6 +84,7 @@ class DiagramView : public QGraphicsView
 		///Set for one call only, by the Escape handler, to let focus leave the view.
 		bool m_releasing_focus = false;
 		void paintEvent(QPaintEvent *event) override;
+		void paintingInverted(bool inverted) override;
 		void mousePressEvent(QMouseEvent *) override;
 		void mouseMoveEvent(QMouseEvent *) override;
 		void mouseReleaseEvent(QMouseEvent *) override;
@@ -136,6 +137,7 @@ class DiagramView : public QGraphicsView
 		void copy();
 		void paste(const QPointF & = QPointF(), QClipboard::Mode = QClipboard::Clipboard);
 		void pasteHere();
+		void duplicate(const QPoint &stepOffset);
 		void adjustSceneRect();
 		void updateWindowTitle();
 		void resetConductors();
@@ -52,6 +52,18 @@ ElementsCollectionCache::ElementsCollectionCache(const QString &database_path, Q
 		QSqlQuery(cache_db_).exec("PRAGMA locking_mode = EXCLUSIVE");
 		QSqlQuery(cache_db_).exec("PRAGMA synchronous = OFF");

+			// Previews used to be stored on an opaque white sheet; they are
+			// transparent now, so the collection tree can adapt them to a
+			// dark palette. A cache written before that is dropped once.
+		QSqlQuery(cache_db_).exec("CREATE TABLE IF NOT EXISTS meta"
+					   "(key VARCHAR(32) NOT NULL PRIMARY KEY, value VARCHAR(64));");
+		QSqlQuery meta(cache_db_);
+		meta.exec("SELECT value FROM meta WHERE key = 'pixmaps'");
+		if (!meta.next() || meta.value(0).toString() != QLatin1String("transparent")) {
+			QSqlQuery(cache_db_).exec("DROP TABLE IF EXISTS pixmaps");
+			QSqlQuery(cache_db_).exec("DROP TABLE IF EXISTS names");
+			QSqlQuery(cache_db_).exec("REPLACE INTO meta (key, value) VALUES ('pixmaps', 'transparent')");
+		}
 #if TODO_LIST
 #pragma message("@TODO the tables could already exist, handle that case.")
 #endif
@@ -54,24 +54,8 @@ ElementsPanel::ElementsPanel(QWidget *parent) :
 	setDropIndicatorShown(true);
 	setAutoExpandDelay(1000);
 	
-	// force du noir sur une alternance de blanc (comme le schema) et de gris
-	// clair, avec du blanc sur bleu pas trop fonce pour la selection
-	//
-	// Element icons are rendered with colors read directly from each .elmt
-	// file (almost always black linework, matching printed-schematic
-	// convention) onto a transparent background -- so this view must keep
-	// a light background regardless of the OS/desktop theme, or the icons
-	// become invisible on dark themes. QAbstractItemView paints its rows
-	// using the viewport's palette, not the view's own, so the palette
-	// must be applied to both to actually take effect under every style.
-	QPalette qp = palette();
-	qp.setColor(QPalette::Text,            Qt::black);
-	qp.setColor(QPalette::Base,            Qt::white);
-	qp.setColor(QPalette::AlternateBase,   QColor("#e8e8e8"));
-	qp.setColor(QPalette::Highlight,       QColor("#678db2"));
-	qp.setColor(QPalette::HighlightedText, Qt::black);
-	setPalette(qp);
-	viewport()->setPalette(qp);
+	// Rows follow the application palette; the icons shown here come from
+	// the icon theme, which has a dark variant.
 	
 		// we handle double click on items ourselves
 	connect(this, &ElementsPanel::itemDoubleClicked, this, &ElementsPanel::slot_doubleClick);
@@ -19,6 +19,7 @@

 #include "QPropertyUndoCommand/qpropertyundocommand.h"
 #include "diagram.h"
+#include "qetapp.h"
 #include "qetgraphicsitem/dynamicelementtextitem.h"
 #include "qetgraphicsitem/elementtextitemgroup.h"

@@ -137,25 +138,14 @@ void ElementTextsMover::endMovement()

 QString ElementTextsMover::undoText() const
 {
-	QString undo_text;
-	
-	if(m_text_count == 1)
-		undo_text.append(QObject::tr("Déplacer un texte d'élément"));
-	else if(m_text_count > 1)
-		undo_text.append(QObject::tr("Déplacer %1 textes d'élément").arg(m_items_hash.size()));
-	
-	if(m_group_count >= 1)
-	{
-		if(undo_text.isEmpty())
-			undo_text.append(QObject::tr("Déplacer"));
-		else
-			undo_text.append(QObject::tr(" et"));
-		
-		if(m_group_count == 1)
-			undo_text.append(QObject::tr(" un groupe de texte"));
-		else
-			undo_text.append(QObject::tr((" %1 groupes de textes")).arg(m_group_count));
-	}
-	
-	return undo_text;
+	QStringList parts;
+	if (m_text_count)
+		parts << QObject::tr("%n texte(s) d'élément", "", m_text_count);
+	if (m_group_count)
+		parts << QObject::tr("%n groupe(s) de textes", "", m_group_count);
+
+	if (parts.isEmpty())
+		return QString(); // should never occur
+
+	return QObject::tr("Déplacer %1").arg(QLocale(QETApp::interfaceLanguage()).createSeparatedList(parts));
 }
@@ -146,12 +146,13 @@ QPixmap ElementPictureFactory::pixmap(const ElementsLocation &location)
 		QPixmap pix(w, h);
 			//Element definitions almost always draw with a hardcoded black
 			//stroke color, on the assumption of the white diagram sheet they
-			//are normally placed on. A transparent background here makes
-			//that stroke disappear against a dark widget/tree-view background
-			//(bugtracker #335). Give it an opaque white background instead -
-			//exactly what the element already assumes visually, in every
-			//context this pixmap is used (tree icons, drag icon, previews).
-		pix.fill(Qt::white);
+			//are normally placed on. The pixmap is kept as drawn, on a
+			//transparent background: the places that show it (the
+			//collection tree through ElementPreviewDelegate, the drag icon)
+			//adapt it to the palette with QET::Palette::forPalette(), so a
+			//dark palette gets light ink instead of black on black
+			//(bugtracker #335).
+		pix.fill(Qt::transparent);

 		QPainter painter(&pix);
 		painter.setRenderHint(QPainter::Antialiasing, true);
@@ -32,8 +32,14 @@ class QetGraphicsTableFactory

 		static void createAndAddNomenclature(Diagram *diagram);
 		static void createAndAddSummary(Diagram *diagram);
-	private:
+			// Public so a caller that has already built and configured an
+			// AddTableDialog itself (never shown or exec'd -- the two
+			// methods above always exec() one, which the scripting API
+			// cannot use headlessly) can create a table from it directly.
+			// create() only reads settings already on the dialog; nothing
+			// about it depends on the dialog having been shown.
 		static void create(Diagram *diagram, AddTableDialog *dialog);
+	private:
 		static QetGraphicsTableItem *newTable(
 				Diagram *diagram,
 				AddTableDialog *dialog,
@@ -72,6 +72,15 @@ bool AddTableDialog::adjustTableToFolio() const
 	return ui->m_adjust_table_size_cb->isChecked();
 }

+/**
+	@brief AddTableDialog::setAdjustTableToFolio
+	@param set
+*/
+void AddTableDialog::setAdjustTableToFolio(bool set)
+{
+	ui->m_adjust_table_size_cb->setChecked(set);
+}
+
 /**
 	@brief AddTableDialog::addNewTableToNewDiagram
 	@return
@@ -81,6 +90,15 @@ bool AddTableDialog::addNewTableToNewDiagram() const
 	return ui->m_add_table_and_folio->isChecked();
 }

+/**
+	@brief AddTableDialog::setAddNewTableToNewDiagram
+	@param set
+*/
+void AddTableDialog::setAddNewTableToNewDiagram(bool set)
+{
+	ui->m_add_table_and_folio->setChecked(set);
+}
+
 /**
 	@brief AddTableDialog::tableName
 	@return
@@ -90,6 +108,18 @@ QString AddTableDialog::tableName() const
 	return ui->m_table_name_le->text();
 }

+/**
+	@brief AddTableDialog::setTableName
+	Set the name field directly, so a caller that builds this dialog to
+	read from (never shows or execs it -- the scripting API's addTable())
+	does not need a name typed by a user who was never there to type one.
+	@param name
+*/
+void AddTableDialog::setTableName(const QString &name)
+{
+	ui->m_table_name_le->setText(name);
+}
+
 /**
 	@brief AddTableDialog::headerMargins
 	@return
@@ -44,9 +44,12 @@ class AddTableDialog : public QDialog

 		void setQueryWidget(QWidget *widget);
 		bool adjustTableToFolio() const;
+		void setAdjustTableToFolio(bool set);
 		bool addNewTableToNewDiagram() const;
+		void setAddNewTableToNewDiagram(bool set);

 		QString tableName() const;
+		void setTableName(const QString &name);

 		QMargins headerMargins() const;
 		Qt::Alignment headerAlignment() const;
@@ -0,0 +1,237 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#include "palettegraphicsview.h"
+
+#include "qetpalette.h"
+
+#include <QApplication>
+#include <QEvent>
+#include <QPaintEvent>
+#include <QStyleHintReturnMask>
+#include <QStyleOptionRubberBand>
+#include <QtMath>
+
+namespace {
+	/**
+		QGraphicsScene::drawItems() is protected, and QGraphicsView::drawItems()
+		hands the scene the viewport only when the painter is on it. The
+		view paints into an image, and still needs the scene to get the
+		viewport: that is what makes the scene record where it painted
+		each item, which is where the item is erased from when it moves.
+		Naming the member through a derived class is the standard way to
+		a pointer to a protected member; a call through it dispatches to
+		the scene's own override, if any.
+	*/
+	struct SceneAccess : QGraphicsScene
+	{
+		using DrawItems = void (QGraphicsScene::*)(QPainter *, int, QGraphicsItem *[],
+		                                           const QStyleOptionGraphicsItem[], QWidget *);
+		static DrawItems drawItemsPointer() { return &SceneAccess::drawItems; }
+	};
+}
+
+PaletteGraphicsView::PaletteGraphicsView(QWidget *parent) :
+	QGraphicsView(parent)
+{
+	qApp->installEventFilter(this);
+}
+
+PaletteGraphicsView::PaletteGraphicsView(QGraphicsScene *scene, QWidget *parent) :
+	QGraphicsView(scene, parent)
+{
+	qApp->installEventFilter(this);
+}
+
+/**
+	@brief PaletteGraphicsView::invertsLightness
+	@return true when the scene is shown with its lightness inverted,
+	i.e. when the application palette is dark. The application palette,
+	not the view's own: a style sheet on an ancestor (the folio tab
+	widget has one) makes QStyleSheetStyle pin the palette of every
+	widget under it to the application palette in force when the sheet
+	was applied, so after a live light/dark switch palette() is stale.
+*/
+bool PaletteGraphicsView::invertsLightness() const
+{
+	return QET::Palette::isDark(QApplication::palette());
+}
+
+void PaletteGraphicsView::paintingInverted(bool inverted)
+{
+	Q_UNUSED(inverted)
+}
+
+/**
+	@brief PaletteGraphicsView::eventFilter
+	Repaint the whole viewport when the application palette changes. Qt
+	sends that change to the application object and then repaints only
+	the widgets whose own palette changed with it, which under a style
+	sheet is not the case (see invertsLightness()): the scene would then
+	repaint only what it updates itself, and the viewport around the
+	sheet would keep the colors of the previous palette. The filter sits
+	on the application object, the one receiver Qt always notifies.
+*/
+bool PaletteGraphicsView::eventFilter(QObject *watched, QEvent *event)
+{
+	if (watched == qApp && event->type() == QEvent::ApplicationPaletteChange)
+		viewport()->update();
+	return QGraphicsView::eventFilter(watched, event);
+}
+
+/**
+	@brief PaletteGraphicsView::paintEvent
+	Paints as QGraphicsView on a light palette, inverted on a dark one.
+*/
+void PaletteGraphicsView::paintEvent(QPaintEvent *event)
+{
+	if (invertsLightness() && !customBackgroundColor())
+	{
+		paintInverted(event);
+		return;
+	}
+	m_buffer = QImage();
+	QGraphicsView::paintEvent(event);
+}
+
+/**
+	@brief PaletteGraphicsView::paintInverted
+	Run QGraphicsView::paintEvent() with the drawing hooks redirected to
+	an off-screen image of the viewport, then invert the lightness of the
+	exposed part of that image between the palette's Base and Text colors
+	and blit it to the viewport. Inverting the finished rendering turns
+	the white sheet dark and the black ink light in one pass, and keeps
+	the hue of colored strokes. The image is in viewport coordinates, so
+	the hooks paint with the view's own transform and the scene records
+	the items' places in the viewport, as it does on a light palette.
+	@param event the paint event, for the exposed area
+*/
+void PaletteGraphicsView::paintInverted(QPaintEvent *event)
+{
+	const QRect exposed = event->rect().intersected(viewport()->rect());
+	if (exposed.isEmpty())
+		return;
+
+	const qreal ratio = viewport()->devicePixelRatioF();
+	const QSize size(qCeil(viewport()->width() * ratio), qCeil(viewport()->height() * ratio));
+	if (m_buffer.size() != size || m_buffer.devicePixelRatio() != ratio)
+	{
+		m_buffer = QImage(size, QImage::Format_RGB32);
+		m_buffer.setDevicePixelRatio(ratio);
+	}
+
+	m_buffer_painter.begin(&m_buffer);
+	// The hooks paint only what the scene draws; what they leave blank is
+	// the white sheet, which the inversion turns into the Base color.
+	m_buffer_painter.fillRect(exposed, Qt::white);
+	m_buffer_painter.setClipRect(exposed);
+	m_buffer_painter.setRenderHints(renderHints());
+	m_buffer_painter.setWorldTransform(viewportTransform());
+
+	m_inverting = true;
+	paintingInverted(true);
+	const OptimizationFlags flags = optimizationFlags();
+	setOptimizationFlag(QGraphicsView::IndirectPainting, true);
+	QGraphicsView::paintEvent(event);
+	setOptimizationFlags(flags);
+	paintingInverted(false);
+	m_inverting = false;
+
+	m_buffer_painter.end();
+	blitInverted(exposed);
+}
+
+/**
+	@brief PaletteGraphicsView::drawBackground
+	Into the off-screen image while painting inverted, else as
+	QGraphicsView.
+*/
+void PaletteGraphicsView::drawBackground(QPainter *painter, const QRectF &rect)
+{
+	QGraphicsView::drawBackground(m_inverting ? &m_buffer_painter : painter, rect);
+}
+
+/**
+	@brief PaletteGraphicsView::drawItems
+	Into the off-screen image while painting inverted, with the viewport
+	as the scene's widget (see SceneAccess), else as QGraphicsView.
+*/
+void PaletteGraphicsView::drawItems(QPainter *painter, int count, QGraphicsItem *items[],
+                                    const QStyleOptionGraphicsItem options[])
+{
+	if (m_inverting && scene())
+		(scene()->*SceneAccess::drawItemsPointer())(&m_buffer_painter, count, items, options, viewport());
+	else
+		QGraphicsView::drawItems(painter, count, items, options);
+}
+
+/**
+	@brief PaletteGraphicsView::drawForeground
+	Into the off-screen image while painting inverted, else as
+	QGraphicsView.
+*/
+void PaletteGraphicsView::drawForeground(QPainter *painter, const QRectF &rect)
+{
+	QGraphicsView::drawForeground(m_inverting ? &m_buffer_painter : painter, rect);
+}
+
+/**
+	@brief PaletteGraphicsView::blitInverted
+	Invert the lightness of \a area of the off-screen image and draw it on
+	the viewport, then the selection rubber band on top: the one
+	QGraphicsView::paintEvent() drew went under the blit.
+	@param area the part of the viewport to blit, in viewport coordinates
+*/
+void PaletteGraphicsView::blitInverted(const QRect &area)
+{
+	const qreal ratio = m_buffer.devicePixelRatio();
+	QImage part = m_buffer.copy(QRectF(area.topLeft() * ratio, area.size() * ratio).toAlignedRect());
+	part.setDevicePixelRatio(ratio);
+	// The application palette, for the reason given in invertsLightness().
+	const QPalette application_palette = QApplication::palette();
+	QET::Palette::invertLightness(part, application_palette.color(QPalette::Base),
+	                              application_palette.color(QPalette::Text));
+
+	QPainter painter(viewport());
+	painter.drawImage(area.topLeft(), part);
+	drawRubberBand(painter);
+}
+
+/**
+	@brief PaletteGraphicsView::drawRubberBand
+	Draw the selection rubber band the way QGraphicsView::paintEvent does,
+	after the inversion, in the palette colors.
+	@param painter a painter on the viewport
+*/
+void PaletteGraphicsView::drawRubberBand(QPainter &painter)
+{
+	const QRect band = rubberBandRect();
+	if (band.isNull())
+		return;
+
+	QStyleOptionRubberBand option;
+	option.initFrom(viewport());
+	option.rect = band;
+	option.shape = QRubberBand::Rectangle;
+
+	QStyleHintReturnMask mask;
+	if (viewport()->style()->styleHint(QStyle::SH_RubberBand_Mask, &option,
+	                                   viewport(), &mask))
+		painter.setClipRegion(mask.region, Qt::IntersectClip);
+	viewport()->style()->drawControl(QStyle::CE_RubberBand, &option,
+	                                 &painter, viewport());
+}
@@ -0,0 +1,99 @@
+/*
+	Copyright 2006-2026 The QElectroTech Team
+	This file is part of QElectroTech.
+
+	QElectroTech is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 2 of the License, or
+	(at your option) any later version.
+
+	QElectroTech is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef PALETTE_GRAPHICS_VIEW_H
+#define PALETTE_GRAPHICS_VIEW_H
+
+#include <QGraphicsView>
+#include <QImage>
+#include <QPainter>
+
+/**
+	A QGraphicsView that shows its scene with inverted lightness while the
+	application palette is dark: white becomes the palette's Base color,
+	black its Text color, and colored strokes keep their hue. The scene
+	itself is left as drawn, so printing and exporting it still give black
+	on white. On a light palette the view paints exactly as QGraphicsView
+	does.
+
+	On a dark palette the view still runs QGraphicsView::paintEvent(), with
+	the IndirectPainting flag set for the duration of that call, so that
+	the background, the items and the foreground come through the
+	drawBackground(), drawItems() and drawForeground() hooks. (That flag
+	selects Qt's older item-painting algorithm, which first builds a list
+	of the exposed items and their style options; it is set only while
+	the view paints inverted.) The hooks
+	paint into an off-screen image the size of the viewport, in viewport
+	coordinates; paintEvent() then inverts the lightness of the exposed
+	part of that image and blits it. Going through the real paint event,
+	and handing the scene the viewport when the items are drawn, keeps the
+	view on QGraphicsView's default update path, which erases a moved item
+	where it was last painted, children included, even a child whose
+	geometry is set while its parent is painted (a terminal's help lines).
+	The alternative, rendering with QGraphicsView::render(), needed a
+	receiver on QGraphicsScene::changed() to keep the scene's updates
+	flowing, and that receiver puts the scene on its Qt 4.4 compatibility
+	path, which erases only the moved item's own old rectangle: a moved
+	element then left its terminals' help lines, which span the whole
+	sheet, behind at every step (#954).
+
+	The CacheBackground cache mode is not supported on the inverted path.
+*/
+class PaletteGraphicsView : public QGraphicsView
+{
+	Q_OBJECT
+
+	public:
+		explicit PaletteGraphicsView(QWidget *parent = nullptr);
+		explicit PaletteGraphicsView(QGraphicsScene *scene, QWidget *parent = nullptr);
+
+		bool invertsLightness() const;
+
+		static void setCustomBackgroundColor(bool custom) { s_custom_bg = custom; }
+		static bool customBackgroundColor() { return s_custom_bg; }
+
+	protected:
+		bool eventFilter(QObject *watched, QEvent *event) override;
+		void paintEvent(QPaintEvent *event) override;
+		void drawBackground(QPainter *painter, const QRectF &rect) override;
+		void drawItems(QPainter *painter, int count, QGraphicsItem *items[],
+		               const QStyleOptionGraphicsItem options[]) override;
+		void drawForeground(QPainter *painter, const QRectF &rect) override;
+		/**
+			Called with true right before the scene is painted for an
+			inverted display and with false right after, so a scene can
+			adapt what it draws (a softer grid, for instance). Does
+			nothing by default.
+		*/
+		virtual void paintingInverted(bool inverted);
+
+	private:
+		void paintInverted(QPaintEvent *event);
+		void blitInverted(const QRect &area);
+		void drawRubberBand(QPainter &painter);
+
+		/// The off-screen image the hooks paint into while m_inverting:
+		/// the viewport's size, in its coordinates. Kept between paints,
+		/// dropped when the view paints on a light palette again.
+		QImage m_buffer;
+		QPainter m_buffer_painter;
+		/// True while paintEvent() paints for an inverted display.
+		bool m_inverting = false;
+		static inline bool s_custom_bg = false;
+};
+
+#endif
@@ -16,6 +16,7 @@
 	along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
 */
 #include "qet.h"
+#include "qetapp.h"
 #include "qeticons.h"
 #include "shortcutmanager.h"

@@ -271,84 +272,88 @@ QString QET::ElementsAndConductorsSentence(
 		int tables_count,
 		int terminal_strip_count)
 {
-	QString text;
+	QStringList parts;
 	if (elements_count) {
-		text += QObject::tr(
-			"%n élément(s)",
-			"part of a sentence listing the content of a diagram",
-			elements_count
+		parts.append(
+			QObject::tr(
+				"%n élément(s)",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				elements_count
+			)
 		);
 	}

 	if (conductors_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-			"%n conducteur(s)",
-			"part of a sentence listing the content of a diagram",
-			conductors_count
+		parts.append(
+			QObject::tr(
+				"%n conducteur(s)",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				conductors_count
+			)
 		);
 	}

 	if (texts_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-			"%n champ(s) de texte",
-			"part of a sentence listing the content of a diagram",
-			texts_count
+		parts.append(
+			QObject::tr(
+				"%n champ(s) de texte",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				texts_count
+			)
 		);
 	}

 	if (images_count) {
-		if (!text.isEmpty()) text += ", ";
-		// Qt's %n only selects a grammatical singular/plural form (the
-		// "(s)" convention used by every other count here) -- it never
-		// spells the number out as a word, so getting "une image"
-		// instead of the literal "1 image" for the single-item case
-		// means handling that count outside %n entirely, with its own
-		// fixed string.
-		text += images_count == 1
-				? QObject::tr("une image", "part of a sentence listing the content of a diagram")
-				: QObject::tr(
-					"%n images",
-					"part of a sentence listing the content of a diagram",
-					images_count
-				);
+		parts.append(
+			QObject::tr(
+				"%n image(s)",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				images_count
+			)
+		);
 	}

 	if (shapes_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-			"%n forme(s)",
-			"part of a sentence listing the content of a diagram",
-			shapes_count
+		parts.append(
+			QObject::tr(
+				"%n forme(s)",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				shapes_count
+			)
 		);
 	}

 	if (element_text_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-					"%n texte(s) d'élément",
-					"part of a sentence listing the content of a diagram",
-					element_text_count);
+		parts.append(
+			QObject::tr(
+				"%n texte(s) d'élément",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				element_text_count
+			)
+		);
 	}

 	if (tables_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-					"%n tableau(s)",
-					"part of a sentence listing the content of diagram",
-					tables_count);
+		parts.append(
+			QObject::tr(
+				"%n tableau(s)",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				tables_count
+			)
+		);
 	}

 	if (terminal_strip_count) {
-		if (!text.isEmpty()) text += ", ";
-		text += QObject::tr(
-					"%n plan de bornes",
-					"part of a sentence listing the content of a diagram",
-					terminal_strip_count);
+		parts.append(
+			QObject::tr(
+				"%n plan(s) de bornes",
+				"Sentence fragment used in an automatically generated list of different objects, e.g. objects moved at the same time, which will be combined into a sentence.",
+				terminal_strip_count
+			)
+		);
 	}

-	return(text);
+	return QLocale(QETApp::interfaceLanguage()).createSeparatedList(parts);
 }

 /**
@@ -28,6 +28,7 @@
 #include "qetdiagrameditor.h"
 #include "qeticons.h"
 #include "qetpalette.h"
+#include "qetstyle.h"
 #include "utils/qetutils.h"
 #include "qetmessagebox.h"
 #include "qetproject.h"
@@ -52,6 +53,7 @@
 #include <QFontDatabase>
 #include <QProcessEnvironment>
 #include <QRegularExpression>
+#include <QStyleFactory>
 #include <QStyleHints>
 #ifdef BUILD_WITHOUT_KF
 #	include "ui/nokde/kautosavefile.h"
@@ -233,6 +235,8 @@ QString QETApp::loadedQtTranslationFile()
 */
 void QETApp::setLanguage(const QString &desired_language) {
 	QString languages_path = languagesPath();
+	
+	m_interface_language = desired_language;

 	// load Qt library translations
 	QString qt_l10n_path = QLibraryInfo::path(QLibraryInfo::TranslationsPath);
@@ -1806,6 +1810,85 @@ void QETApp::useSystemPalette(bool use) {
 			file.close();
 		}
 	}
+	// Widgets with their own style sheet keep the palette they were
+	// polished with; after a live light/dark switch they would stay in
+	// the old colors (see QET::Palette::refreshStyleSheets).
+	QET::Palette::refreshStyleSheets();
+}
+
+/**
+	@brief QETApp::useCustomPalette
+	Apply a user-chosen color as the application-wide palette.
+	Builds a full QPalette from \a color, keeping the system palette
+	as a fallback for roles we don't touch.
+	@param color the user-chosen base color
+*/
+void QETApp::useCustomPalette(const QColor &color) {
+	if (!color.isValid())
+		return;
+
+	// Derive readable text colors from the chosen color.
+	const bool dark = color.lightness() < 128;
+	const QColor text = dark ? QColor(220, 220, 220) : QColor(30, 30, 30);
+	const QColor disabled_text = dark ? QColor(175, 175, 175) : QColor(128, 128, 128);
+
+	// Slightly lighter/darker for button and window shading.
+	QColor button = color;
+	button = QColor::fromHslF(color.hslHueF(),
+				  color.hslSaturationF(),
+				  dark ? qMin(color.lightnessF() + 0.08, 1.0)
+				       : qMax(color.lightnessF() - 0.08, 0.0));
+	QColor light = QColor::fromHslF(color.hslHueF(),
+					color.hslSaturationF(),
+					dark ? qMin(color.lightnessF() + 0.15, 1.0)
+					     : qMax(color.lightnessF() - 0.15, 0.0));
+	QColor mid = QColor::fromHslF(color.hslHueF(),
+				     color.hslSaturationF(),
+				     dark ? qMin(color.lightnessF() + 0.04, 1.0)
+				          : qMax(color.lightnessF() - 0.04, 0.0));
+	QColor dark_c = QColor::fromHslF(color.hslHueF(),
+					 color.hslSaturationF(),
+					 dark ? qMin(color.lightnessF() - 0.04, 1.0)
+					      : qMax(color.lightnessF() - 0.12, 0.0));
+	QColor shadow = QColor::fromHslF(color.hslHueF(),
+					 color.hslSaturationF(),
+					 dark ? qMin(color.lightnessF() - 0.10, 1.0)
+					      : qMax(color.lightnessF() - 0.20, 0.0));
+
+	QPalette p;
+	// Active and Inactive get the same colors; only Disabled differs.
+	for (auto group : {QPalette::Active, QPalette::Inactive}) {
+		p.setColor(group, QPalette::Window,          color);
+		p.setColor(group, QPalette::WindowText,      text);
+		p.setColor(group, QPalette::Base,            color);
+		p.setColor(group, QPalette::AlternateBase,   button);
+		p.setColor(group, QPalette::Text,            text);
+		p.setColor(group, QPalette::Button,          button);
+		p.setColor(group, QPalette::ButtonText,      text);
+		p.setColor(group, QPalette::BrightText,      dark ? QColor(255,90,90) : Qt::white);
+		p.setColor(group, QPalette::Highlight,       QColor(30, 96, 176));
+		p.setColor(group, QPalette::HighlightedText, Qt::white);
+		p.setColor(group, QPalette::ToolTipBase,     button);
+		p.setColor(group, QPalette::ToolTipText,     text);
+		p.setColor(group, QPalette::Light,           light);
+		p.setColor(group, QPalette::Midlight,        mid);
+		p.setColor(group, QPalette::Mid,             mid);
+		p.setColor(group, QPalette::Dark,            dark_c);
+		p.setColor(group, QPalette::Shadow,          shadow);
+#if QT_VERSION >= QT_VERSION_CHECK(6, 6, 0)
+		p.setColor(group, QPalette::Accent,          QColor(30, 96, 176));
+#endif
+	}
+	p.setColor(QPalette::Disabled, QPalette::WindowText, disabled_text);
+	p.setColor(QPalette::Disabled, QPalette::Text,       disabled_text);
+	p.setColor(QPalette::Disabled, QPalette::ButtonText, disabled_text);
+
+	qApp->setPalette(p);
+	qApp->setStyleSheet(QString());
+
+	// Switch icon theme to match light/dark.
+	applyIconTheme(p);
+	QET::Palette::refreshStyleSheets();
 }

 /**
@@ -2368,6 +2451,12 @@ void QETApp::applyIconTheme(const QPalette &palette)
 */
 void QETApp::initStyle()
 {
+	// Wrap the running style so icons get a hover state (see qetstyle.h).
+	// The proxy keeps the base style's object name, so the Fusion checks
+	// below still see "fusion".
+	if (!qobject_cast<QETStyle *>(qApp->style()))
+		qApp->setStyle(new QETStyle(QStyleFactory::create(qApp->style()->objectName())));
+
 	initial_palette_ = qApp->palette();

 #ifdef Q_OS_MACOS
@@ -2390,7 +2479,13 @@ void QETApp::initStyle()

 	//Apply or not the system style
 	QSettings settings;
-	useSystemPalette(settings.value("usesystemcolors", true).toBool());
+	if (settings.value("usesystemcolors", true).toBool()) {
+		useSystemPalette(true);
+	} else if (settings.contains("customapplicationcolor")) {
+		useCustomPalette(QColor(settings.value("customapplicationcolor").toString()));
+	} else {
+		useSystemPalette(false);
+	}

 #if defined(Q_OS_MACOS) && QT_VERSION >= QT_VERSION_CHECK(6, 5, 0)
 	// Setting an application palette stops Qt from following the OS
@@ -3031,3 +3126,5 @@ int QETApp::projectId(const QETProject *project) {
 	}
 	return(-1);
 }
+
+QString QETApp::m_interface_language;
@@ -68,6 +68,7 @@ class QETApp : public QObject
 	public:
 		static QETApp *instance();
 		void setLanguage(const QString &);
+		static QString interfaceLanguage() { return m_interface_language; }
 		static QString langFromSetting ();
 		void switchLayout(Qt::LayoutDirection);
 		static void printHelp();
@@ -246,6 +247,8 @@ class QETApp : public QObject
 		static QString m_user_company_tbt_dir;
 		static QString m_user_custom_tbt_dir;
 		static QString m_user_macros_dir;
+		
+		static QString m_interface_language;
 	
 	public slots:
 		void systray(QSystemTrayIcon::ActivationReason);
@@ -263,6 +266,7 @@ class QETApp : public QObject
 		void setMainWindowVisible(QMainWindow *, bool);
 		void invertMainWindowVisibility(QWidget *);
 		void useSystemPalette(bool);
+		void useCustomPalette(const QColor &color);
 		void quitQET();
 		void checkRemainingWindows();
 		void openFiles(const QETArguments &);
@@ -51,11 +51,14 @@
 #include "shortcutmanager.h"
 #include "ui/bomexportdialog.h"
 #include "ui/conductorcolortoolbutton.h"
+#include "ui/diagrambgcolorbutton.h"
+#include "ui/duplicateoffsetdialog.h"
 #include "ui/jumptoelementdialog.h"
 #include "ui/diagrampropertieseditordockwidget.h"
 #include "ui/backupdialog.h"
 #include "ui/dialogwaiting.h"
 #include "undocommand/addelementtextcommand.h"
+#include "utils/qetsettings.h"
 #include "utils/qetutils.h"
 #include "undocommand/rotateselectioncommand.h"
 #include "undocommand/rotatetextscommand.h"
@@ -373,6 +376,46 @@ void QETDiagramEditor::setUpActions()
 					new DiagramEventAddPaste(dv->diagram(), start_pos));
 	});

+		//Duplicate: copy the selection and place it at a configured,
+		//grid-step offset immediately -- no interactive follow-the-
+		//cursor step, unlike Ctrl+V above. That is deliberate (#991):
+		//the point of a duplicate shortcut is repeatable, unattended
+		//stamping (configure the offset once, then tap Ctrl+D to lay
+		//out a row), which an interactive placement would interrupt on
+		//every press.
+	m_duplicate = new QAction(QET::Icons::EditCopy, tr("Dupli&quer"), this);
+	ShortcutManager::instance().registerAction(m_duplicate, "diagrameditor.duplicate", tr("Éditeur de schémas"), Qt::CTRL | Qt::Key_D);
+	m_duplicate->setStatusTip(tr("Copie la sélection, décalée de l'espacement configuré", "status bar tip"));
+	connect(m_duplicate, &QAction::triggered, [this]() {
+		auto *dv = currentDiagramView();
+		if (!dv || !dv->diagram()) return;
+
+			//Ask the first time only -- every later press reuses whatever
+			//was confirmed then, so the shortcut can be tapped repeatedly
+			//without an interruption each time. m_configure_duplicate
+			//below is the deliberate way back into this dialog.
+		if (!DuplicateOffsetDialog::hasSavedStepOffset()) {
+			DuplicateOffsetDialog dialog(this);
+			if (dialog.exec() != QDialog::Accepted) return;
+			DuplicateOffsetDialog::saveStepOffset(dialog.stepOffset());
+		}
+		dv->duplicate(DuplicateOffsetDialog::savedStepOffset());
+	});
+
+		//Reopens the dialog above on demand, to change the spacing or
+		//direction a later Ctrl+D should use. Enabled unconditionally
+		//(see slot_updateComplexActions()): it only ever writes a
+		//setting, so it does not need a diagram open or anything
+		//selected the way m_duplicate itself does.
+	m_configure_duplicate = new QAction(tr("Configurer la duplication..."), this);
+	m_configure_duplicate->setStatusTip(tr("Choisir l'espacement et la direction utilisés par Dupliquer", "status bar tip"));
+	connect(m_configure_duplicate, &QAction::triggered, [this]() {
+		DuplicateOffsetDialog dialog(this);
+		if (dialog.exec() == QDialog::Accepted) {
+			DuplicateOffsetDialog::saveStepOffset(dialog.stepOffset());
+		}
+	});
+
 		//Reset conductor path
 	m_conductor_reset = new QAction(QET::Icons::ConductorSettings,     tr("Réinitialiser les conducteurs"),        this);
 	ShortcutManager::instance().registerAction(m_conductor_reset, "diagrameditor.conductor_reset", tr("Éditeur de schémas"), Qt::CTRL | Qt::Key_K);
@@ -413,15 +456,8 @@ void QETDiagramEditor::setUpActions()
 			pv->project()->setAutoBreakConductor(abc);
 	});

-		//Switch background color
-	m_grey_background = new QAction   (QET::Icons::DiagramBg, tr("Couleur de fond blanc/gris","Tool tip of white/grey background button"), this);
-	m_grey_background -> setStatusTip (tr("Affiche la couleur de fond du folio en blanc ou en gris", "Status tip of white/grey background button"));
-	m_grey_background -> setCheckable (true);
-	connect (m_grey_background, &QAction::triggered, [this](bool checked) {
-		Diagram::background_color = checked ? Qt::darkGray : Qt::white;
-		if (this->currentDiagramView() &&  this->currentDiagramView()->diagram())
-			this->currentDiagramView()->diagram()->update();
-	});
+		//Diagram background color picker
+	m_background_color_button = new DiagramBgColorToolButton(this, this);

 		//Draw or not the background grid
 	m_draw_grid = new QAction ( QET::Icons::Grid, tr("Afficher la grille"), this);
@@ -900,6 +936,7 @@ void QETDiagramEditor::setUpToolBar()
 	main_tool_bar -> addAction(m_cut);
 	main_tool_bar -> addAction(m_copy);
 	main_tool_bar -> addAction(m_paste);
+	main_tool_bar -> addAction(m_duplicate);
 	main_tool_bar -> addSeparator();
 	main_tool_bar -> addAction(m_delete_selection);
 	main_tool_bar -> addAction(m_rotate_selection);
@@ -912,7 +949,7 @@ void QETDiagramEditor::setUpToolBar()
 	view_tool_bar -> addSeparator();
 	view_tool_bar -> addAction(m_draw_grid);
 	view_tool_bar -> addAction(m_draw_guides);
-	view_tool_bar -> addAction (m_grey_background);
+	view_tool_bar -> addWidget(m_background_color_button);
 	view_tool_bar -> addSeparator();
 	view_tool_bar -> addActions(m_zoom_action_toolBar);

@@ -991,6 +1028,8 @@ void QETDiagramEditor::setUpMenu()
 	menu_edition -> addAction(m_cut);
 	menu_edition -> addAction(m_copy);
 	menu_edition -> addAction(m_paste);
+	menu_edition -> addAction(m_duplicate);
+	menu_edition -> addAction(m_configure_duplicate);
 	menu_edition -> addSeparator();
 		//The same actions the "Ajouter" toolbar holds. They were toolbar-only,
 		//which left them unreachable for anyone working without a mouse: a
@@ -1063,7 +1102,7 @@ void QETDiagramEditor::setUpMenu()
 	menu_affichage -> addSeparator();
 	menu_affichage -> addAction(m_draw_grid);
 	menu_affichage -> addAction(m_draw_guides);
-	menu_affichage -> addAction(m_grey_background);
+	menu_affichage -> addMenu(m_background_color_button->menu());
 	menu_affichage -> addSeparator();
 	menu_affichage -> addActions(m_zoom_actions_group.actions());

@@ -1880,7 +1919,7 @@ void QETDiagramEditor::slot_updateActions()
 	m_select_actions_group.         setEnabled(opened_diagram);
 	m_add_item_actions_group.       setEnabled(editable_project);
 	m_row_column_actions_group.     setEnabled(editable_project);
-	m_grey_background->             setEnabled(opened_diagram);
+	m_background_color_button->    setEnabled(opened_diagram);
 	m_draw_grid->                   setEnabled(opened_diagram);
 	m_draw_guides->                 setEnabled(opened_diagram);

@@ -1953,6 +1992,7 @@ void QETDiagramEditor::slot_updateComplexActions()
 			    << m_find_element
 			    << m_cut
 			    << m_copy
+			    << m_duplicate
 			    << m_delete_selection
 			    << m_rotate_selection
 			    << m_rotate_group_selection
@@ -1982,6 +2022,7 @@ void QETDiagramEditor::slot_updateComplexActions()
 	bool deletable_items = dc.hasDeletableItems();
 	m_cut              -> setEnabled(!ro && copiable_items);
 	m_copy             -> setEnabled(copiable_items);
+	m_duplicate        -> setEnabled(!ro && copiable_items);
 	m_delete_selection -> setEnabled(!ro && deletable_items);
 	m_rotate_selection -> setEnabled(!ro && diagram_->canRotateSelection());
 	m_rotate_group_selection -> setEnabled(!ro && diagram_->canRotateSelection());
@@ -3128,6 +3169,29 @@ void QETDiagramEditor::slot_runScript() {
 	QETProject *project = currentProject();
 	if (!project) return;

+	// Scripting is off until somebody says otherwise, so the first use has
+	// to ask. Asking here rather than greying the action out keeps the
+	// feature discoverable: a disabled menu entry tells a user that
+	// something exists and nothing about how to have it.
+	if (!QetSettings::scriptingEnabled()) {
+		const QMessageBox::StandardButton answer = QET::QetMessageBox::question(
+			this,
+			tr("Exécuter un script"),
+			tr("Les scripts sont désactivés.\n\n"
+			   "Un script s'exécute avec vos droits : il peut lire et "
+			   "modifier le projet ouvert et écrire des fichiers. "
+			   "N'exécutez que des scripts dont vous connaissez "
+			   "l'origine.\n\n"
+			   "Activer les scripts ? Ce réglage est modifiable dans "
+			   "Configurer QElectroTech > Général > Projets."),
+			QMessageBox::Yes | QMessageBox::Cancel,
+			QMessageBox::Cancel);
+		if (answer != QMessageBox::Yes) {
+			return;
+		}
+		QetSettings::setScriptingEnabled(true);
+	}
+
 	const QString script_path = QFileDialog::getOpenFileName(
 		this,
 		tr("Exécuter un script"),
--- a/Show More
+++ b/Show More