fix: realign sqlite path and stabilize client data

frontend/src/utils/importUtils.ts

@@ -76,43 +76,3 @@ export const importDrawings = async (
 
   return { success: successCount, failed: failCount, errors };
 };
-
-export const importLibrary = async (file: File) => {
-  try {
-    const text = await file.text();
-    const data = JSON.parse(text);
-
-    let newItems = [];
-    if (data.libraryItems) {
-      newItems = data.libraryItems;
-    } else if (Array.isArray(data)) {
-      newItems = data;
-    } else {
-      throw new Error("Invalid library file format");
-    }
-
-    // Fetch existing
-    const existingRes = await fetch(`${API_URL}/library`);
-    let existingItems = [];
-    if (existingRes.ok) {
-      const existingData = await existingRes.json();
-      existingItems = existingData.libraryItems || [];
-    }
-
-    // Merge (simple concat)
-    const mergedItems = [...existingItems, ...newItems];
-
-    // Save
-    const saveRes = await fetch(`${API_URL}/library`, {
-      method: "POST",
-      headers: { "Content-Type": "application/json" },
-      body: JSON.stringify({ libraryItems: mergedItems }),
-    });
-
-    if (!saveRes.ok) throw new Error("Failed to save library");
-    return { success: true, count: newItems.length };
-  } catch (err: any) {
-    console.error("Library import failed:", err);
-    return { success: false, error: err.message };
-  }
-};