feat: add EditorGridSizePicker and EditorSelectionFrame components; implement FreeCreateView for article management; introduce ArticleSelectionOptimizeService for optimizing article selections

apps/admin-web/src/views/ArticleEditorView.vue

@@ -171,11 +171,30 @@ async function handlePublished(): Promise<void> {
   ]);
 }
 
+const isFreeCreateEmpty = computed(
+  () =>
+    detail.value?.source_type === "free_create" &&
+    title.value.trim() === "" &&
+    markdown.value.trim() === "",
+);
+
+const isFreeCreateInitiallyEmpty = computed(
+  () =>
+    detail.value?.source_type === "free_create" &&
+    initialTitle.value.trim() === "" &&
+    initialMarkdown.value.trim() === "",
+);
+
 function handleBack(): void {
   if (saveMutation.isPending.value) {
     return;
   }
 
+  if (isFreeCreateEmpty.value) {
+    void cleanupEmptyFreeCreate();
+    return;
+  }
+
   if (hasChanges.value) {
     leaveModalOpen.value = true;
     return;
@@ -184,6 +203,19 @@ function handleBack(): void {
   navigateBack();
 }
 
+async function cleanupEmptyFreeCreate(): Promise<void> {
+  try {
+    await articlesApi.remove(articleId.value);
+    await Promise.all([
+      queryClient.invalidateQueries({ queryKey: ["articles"] }),
+      queryClient.invalidateQueries({ queryKey: ["workspace"] }),
+    ]);
+  } catch {
+    // ignore cleanup errors
+  }
+  navigateBack();
+}
+
 function navigateBack(): void {
   if (window.history.length > 1) {
     void router.back();
@@ -199,6 +231,10 @@ function handleStay(): void {
 
 function handleDiscardLeave(): void {
   leaveModalOpen.value = false;
+  if (isFreeCreateInitiallyEmpty.value) {
+    void cleanupEmptyFreeCreate();
+    return;
+  }
   navigateBack();
 }
 
@@ -293,6 +329,7 @@ function serializePlatformSelection(platformIds: string[]): string {
           <MilkdownProvider>
             <ArticleEditorCanvas
               :key="String(articleId)"
+              :article-id="articleId"
               v-model:title="title"
               v-model="markdown"
               :disabled="editorLocked"