fix: reduce app item border width and fix test RPATH

Reduced the border width of app items in the task manager from 2px to
1px for better visual aesthetics and consistency with the overall UI
design. The thicker border was visually distracting and didn't align
with the minimalist design principles.

Added RPATH configuration for test executables to ensure they can find
the required taskmanager plugin libraries at build time. This fixes
runtime linking issues during testing by explicitly setting the runtime
library search path to include the build directories where the plugins
are located.

Influence:
1. Verify app items in dock task manager have thinner borders
2. Check that the visual appearance is consistent and less intrusive
3. Run test executables to confirm they can load required libraries
4. Test both rolecombinemodel_tests and rolegroupmodel_tests executables
5. Verify no library loading errors during test execution

fix: 减小应用项边框宽度并修复测试 RPATH

将任务管理器中应用项的边框宽度从 2px 减小到 1px，以获得更好的视觉效果
并与整体 UI 设计保持一致。较粗的边框在视觉上分散注意力，不符合简约设计
原则。

为测试可执行文件添加 RPATH 配置，确保它们在构建时能够找到所需的
taskmanager 插件库。通过显式设置运行时库搜索路径以包含插件所在的构建目
录，修复了测试期间的运行时链接问题。

Influence:
1. 验证坞站任务管理器中的应用项具有更细的边框
2. 检查视觉外观是否一致且不那么突兀
3. 运行测试可执行文件确认它们能够加载所需的库
4. 测试 rolecombinemodel_tests 和 rolegroupmodel_tests 可执行文件
5. 验证测试执行期间没有库加载错误

Author: wjyrich

panels/dock/taskmanager/package/AppItemWithTitle.qml

@@ -132,7 +132,7 @@ Item {
                 color: "transparent"
                 antialiasing: true
                 border.color: Qt.rgba(0, 0, 0, 0.1)
-                border.width: 2
+                border.width: 1
 
                 Rectangle {
                     anchors.fill: parent

tests/panels/dock/taskmanager/CMakeLists.txt

@@ -26,6 +26,20 @@ target_include_directories(rolecombinemodel_tests PRIVATE
     ${CMAKE_SOURCE_DIR}/panels/dock/taskmanager/
 )
 
+# Set RPATH to find the taskmanager plugin library at build time
+set_target_properties(rolecombinemodel_tests PROPERTIES
+    SKIP_BUILD_RPATH FALSE
+    BUILD_WITH_INSTALL_RPATH FALSE
+    BUILD_RPATH "${CMAKE_BINARY_DIR}/plugins:${CMAKE_BINARY_DIR}/frame"
+    INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib"
+)
+
+# Add linker flags to set RPATH
+target_link_options(rolecombinemodel_tests PRIVATE
+    "LINKER:-rpath,${CMAKE_BINARY_DIR}/plugins"
+    "LINKER:-rpath,${CMAKE_BINARY_DIR}/frame"
+)
+
 gtest_discover_tests(rolecombinemodel_tests)
 
 add_executable(rolegroupmodel_tests
@@ -43,4 +57,18 @@ target_include_directories(rolegroupmodel_tests PRIVATE
     ${CMAKE_SOURCE_DIR}/panels/dock/taskmanager/
 )
 
+# Set RPATH to find the taskmanager plugin library at build time
+set_target_properties(rolegroupmodel_tests PROPERTIES
+    SKIP_BUILD_RPATH FALSE
+    BUILD_WITH_INSTALL_RPATH FALSE
+    BUILD_RPATH "${CMAKE_BINARY_DIR}/plugins:${CMAKE_BINARY_DIR}/frame"
+    INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib"
+)
+
+# Add linker flags to set RPATH
+target_link_options(rolegroupmodel_tests PRIVATE
+    "LINKER:-rpath,${CMAKE_BINARY_DIR}/plugins"
+    "LINKER:-rpath,${CMAKE_BINARY_DIR}/frame"
+)
+
 gtest_discover_tests(rolegroupmodel_tests)