cleanup and refactor

public/js/app.js

@@ -136,7 +136,7 @@ importFile?.addEventListener('change', async e => {
         const data = JSON.parse(await res.text());
         if (data.error) throw new Error(data.error);
         await loadBuckets(); state.cards = await api('api/cards'); renderBoard();
-    } catch (err) { console.error('Import failed:', err); }
+    } catch {}
     e.target.value = '';
 });
 
@@ -152,7 +152,7 @@ importLogseq?.addEventListener('change', async e => {
         if (data.error) throw new Error(data.error);
         await loadBuckets(); state.cards = await api('api/cards'); renderBoard();
         await showDialog({ title: 'logseq import', message: `${data.imported} cards, ${data.assets} images imported`, okLabel: 'ok' });
-    } catch (err) { console.error('Logseq import failed:', err); }
+    } catch {}
     e.target.value = '';
 });