🎨 优化扩展模块，完成ai接入和对话功能

data/st-core-scripts/scripts/extensions/attachments/style.css

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+.attachmentsList:empty {
+    width: 100%;
+    height: 100%;
+}
+
+.attachmentsList:empty::before {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    content: "No data";
+    font-weight: bolder;
+    width: 100%;
+    height: 100%;
+    opacity: 0.8;
+    min-height: 3rem;
+}
+
+.attachmentListItem {
+    padding: 10px;
+}
+
+.attachmentListItem.disabled .attachmentListItemName {
+    text-decoration: line-through;
+    opacity: 0.75;
+}
+
+.attachmentListItem.disabled .attachmentFileIcon {
+    opacity: 0.75;
+    cursor: not-allowed;
+}
+
+.attachmentListItemSize {
+    min-width: 4em;
+    text-align: right;
+}
+
+.attachmentListItemCreated {
+    text-align: right;
+}
+
+.attachmentListItemCheckboxContainer,
+.attachmentBulkActionsContainer,
+.attachmentsBulkEditCheckbox {
+    display: none;
+}
+
+@supports selector(:has(*)) {
+    .dataBankAttachments:has(.attachmentsBulkEditCheckbox:checked) .attachmentsBulkEditButton {
+        color: var(--golden);
+    }
+
+    .dataBankAttachments:has(.attachmentsBulkEditCheckbox:checked) .attachmentBulkActionsContainer {
+        display: flex;
+    }
+
+    .dataBankAttachments:has(.attachmentsBulkEditCheckbox:checked) .attachmentListItemCheckboxContainer {
+        display: inline-flex;
+    }
+
+    .dataBankAttachments:has(.attachmentsBulkEditCheckbox:checked) .attachmentFileIcon {
+        display: none;
+    }
+}