refactor: extract filename via lastIndexOf instead of split/pop

Replace split('/').pop() ?? '' with slice(lastIndexOf('/') + 1) in modelStore
and nodeBookmarkStore. Equivalent across no-slash/trailing-slash/empty inputs and
drops the nullish fallback branch.

Author: huang47

src/stores/modelStore.ts

@@ -69,7 +69,9 @@ export class ComfyModelDef {
     this.path_index = pathIndex
     this.file_name = name
     this.normalized_file_name = name.replaceAll('\\', '/')
-    this.simplified_file_name = this.normalized_file_name.split('/').pop() ?? ''
+    this.simplified_file_name = this.normalized_file_name.slice(
+      this.normalized_file_name.lastIndexOf('/') + 1
+    )
     if (this.simplified_file_name.endsWith('.safetensors')) {
       this.simplified_file_name = this.simplified_file_name.slice(
         0,

src/stores/nodeBookmarkStore.ts

@@ -50,9 +50,9 @@ export const useNodeBookmarkStore = defineStore('nodeBookmark', () => {
       .map((bookmark: string) => {
         if (bookmark.endsWith('/')) return createDummyFolderNodeDef(bookmark)
 
-        const parts = bookmark.split('/')
-        const name = parts.pop() ?? ''
-        const category = parts.join('/')
+        const slashIndex = bookmark.lastIndexOf('/')
+        const name = bookmark.slice(slashIndex + 1)
+        const category = bookmark.slice(0, Math.max(0, slashIndex))
         const srcNodeDef = nodeDefStore.allNodeDefsByName[name]
         if (!srcNodeDef) {
           return null