Adds qt migration example

scripts/run-entire-copilot-migration.sh

@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+PROJECT_DIR="${1:-qt5-before/qt5-legacy-migration-benchmark}"
+
+need_cmd() {
+  command -v "$1" >/dev/null 2>&1 || {
+    echo "ERROR: '$1' not found in PATH." >&2
+    exit 1
+  }
+}
+
+need_cmd entire
+need_cmd copilot
+need_cmd git
+
+if [ ! -d "$PROJECT_DIR" ]; then
+  echo "ERROR: project directory '$PROJECT_DIR' not found." >&2
+  exit 1
+fi
+
+cd "$PROJECT_DIR"
+
+if [ ! -d .git ]; then
+  git init
+fi
+
+entire agent add copilot-cli
+entire status
+
+git add .
+if git diff --cached --quiet; then
+  git commit --allow-empty -m "baseline: Qt5/C++11 legacy benchmark before Qt6/C++23 migration"
+else
+  git commit -m "baseline: Qt5/C++11 legacy benchmark before Qt6/C++23 migration"
+fi
+
+entire checkpoint list
+
+cat <<'PROMPT'
+
+Use this prompt in Copilot CLI:
+
+Migrate the legacy Qt5/C++11 desktop application to Qt6/C++23.
+
+Requirements:
+- Read the legacy source project from qt5-before/qt5-legacy-migration-benchmark
+- Write the migrated project into qt6-after/qt6-migrated-benchmark
+- Do not modify the legacy source tree in place
+- Update CMake from Qt5 to Qt6
+- Keep Core, Gui, and Widgets explicitly linked
+- Replace QRegExp with QRegularExpression
+- Replace QDesktopWidget / QApplication::desktop() usage with QScreen-based Qt6 APIs
+- Remove legacy QTextCodec usage and use modern Qt6-safe text handling
+- Modernize old SIGNAL/SLOT syntax to function-pointer connect syntax
+- Replace legacy null pointer literals with nullptr
+- Preserve the .ui and .qrc integration
+- Preserve application behavior
+- Upgrade the project from C++11 to C++23
+- For every code change inside a method, add at least three tests covering the changed behavior
+- Place all generated tests in qt6-after/qt6-migrated-benchmark/tests
+- Update CMake so the migrated application and all tests build successfully with CTest
+- Keep the test file naming compatible with repository policy checks
+- Briefly explain each migration change
+PROMPT
+
+copilot
+
+git status --short
+git add .
+
+if git diff --cached --quiet; then
+  echo "No changes to commit."
+  exit 0
+fi
+
+git commit -m "migrate: Qt5/C++11 app to Qt6/C++23 with tests and modern Qt APIs"
+entire checkpoint list
+entire checkpoint explain HEAD || true