diff --git a/src/Notesmaster/app/.project b/src/Notesmaster/app/.project
new file mode 100644
index 0000000..0fbf261
--- /dev/null
+++ b/src/Notesmaster/app/.project
@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>app</name>
+	<comment>Project app created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1768954653382</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>
diff --git a/src/Notesmaster/app/src/main/java/net/micode/notes/viewmodel/NotesListViewModel.java b/src/Notesmaster/app/src/main/java/net/micode/notes/viewmodel/NotesListViewModel.java
index ef68313..38daea0 100644
--- a/src/Notesmaster/app/src/main/java/net/micode/notes/viewmodel/NotesListViewModel.java
+++ b/src/Notesmaster/app/src/main/java/net/micode/notes/viewmodel/NotesListViewModel.java
@@ -582,78 +582,3 @@ public class NotesListViewModel extends ViewModel {
         Log.d(TAG, "ViewModel cleared");
     }
 }
-
-        isLoading.postValue(true);
-        errorMessage.postValue(null);
-
-        // 检查当前选中笔记的置顶状态
-        List<NotesRepository.NoteInfo> allNotes = notesLiveData.getValue();
-        if (allNotes == null) return;
-
-        boolean hasUnpinned = false;
-        for (NotesRepository.NoteInfo note : allNotes) {
-            if (selectedNoteIds.contains(note.getId())) {
-                if (!note.isPinned) {
-                    hasUnpinned = true;
-                    break;
-                }
-            }
-        }
-
-        // 如果有未置顶的，则全部置顶；否则全部取消置顶
-        final boolean newPinState = hasUnpinned;
-        List<Long> noteIds = new ArrayList<>(selectedNoteIds);
-
-        repository.batchTogglePin(noteIds, newPinState, new NotesRepository.Callback<Integer>() {
-            @Override
-            public void onSuccess(Integer rowsAffected) {
-                isLoading.postValue(false);
-                // 保持选中状态，方便用户查看
-                refreshNotes();
-                Log.d(TAG, "Successfully toggled pin state to " + newPinState);
-            }
-
-            @Override
-            public void onError(Exception error) {
-                isLoading.postValue(false);
-                String message = "置顶操作失败: " + error.getMessage();
-                errorMessage.postValue(message);
-                Log.e(TAG, message, error);
-            }
-        });
-    }
-
-    /**
-     * 检查选中的笔记是否全部已置顶
-     *
-     * @return 如果所有选中的笔记都已置顶返回true
-     */
-    public boolean isAllSelectedPinned() {
-        if (selectedNoteIds.isEmpty()) return false;
-
-        List<NotesRepository.NoteInfo> allNotes = notesLiveData.getValue();
-        if (allNotes == null) return false;
-
-        for (NotesRepository.NoteInfo note : allNotes) {
-            if (selectedNoteIds.contains(note.getId())) {
-                if (!note.isPinned) {
-                    return false;
-                }
-            }
-        }
-        return true;
-    }
-
-    /**
-     * ViewModel销毁时的清理
-     * <p>
-     * 清理资源和状态
-     * </p>
-     */
-    @Override
-    protected void onCleared() {
-        super.onCleared();
-        selectedNoteIds.clear();
-        Log.d(TAG, "ViewModel cleared");
-    }
-}