Reduce compiler warnings: replace qAsConst with std::as_const and update event localPos() to position()

Replaced deprecated qAsConst usages in built modules and updated QMouseEvent::localPos() to position() per Qt6 deprecation guidance.\n\nCo-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

final-migration/build.sh

@@ -0,0 +1,32 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Final build script for migrated project
+# Usage:
+#   ./final-migration/build.sh [--release] [--qt-root PATH]
+# Run inside the Docker container created by ./app/run_docker.sh or on a host with Qt6 installed.
+
+BUILD_TYPE=Release
+QT_ROOT=${QT_ROOT:-/opt/Qt/6.8.3/gcc_64}
+JOBS=5
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --release) BUILD_TYPE=Release; shift;;
+    --debug) BUILD_TYPE=Debug; shift;;
+    --qt-root) QT_ROOT="$2"; shift 2;;
+    --jobs) JOBS="$2"; shift 2;;
+    -j*) JOBS="${1#-j}"; shift;;
+    *) echo "Unknown arg: $1"; exit 1;;
+  esac
+done
+
+echo "Using Qt root: ${QT_ROOT}"
+
+mkdir -p build
+cmake -S . -B build -G Ninja -DCMAKE_PREFIX_PATH="${QT_ROOT}" -DCMAKE_BUILD_TYPE=${BUILD_TYPE}
+cmake --build build -- -j${JOBS}
+# Optional: install into target prefix (uncomment when ready)
+# sudo cmake --install build --prefix /shd/CTC
+
+echo "Build complete. Artifacts are in ./build"