Create standalone browser port of LTX Athena with authenticated native API transport

frontend/lib/asset-copy.ts

@@ -0,0 +1,56 @@
+import { logger } from './logger'
+
+export type ProjectAssetType = 'video' | 'image'
+
+export interface ProjectAssetCopyResult {
+  path: string
+  bigThumbnailPath: string
+  smallThumbnailPath: string
+  width: number
+  height: number
+}
+
+/**
+ * Copy a video/image file to project storage and return precomputed thumbnail paths.
+ */
+export async function addVisualAssetToProject(
+  srcPath: string,
+  projectId: string,
+  type: ProjectAssetType,
+): Promise<ProjectAssetCopyResult | null> {
+  try {
+    const result = await window.electronAPI.addVisualAssetToProject({ srcPath, projectId, type })
+    if (result.success) {
+      return {
+        path: result.path,
+        bigThumbnailPath: result.bigThumbnailPath,
+        smallThumbnailPath: result.smallThumbnailPath,
+        width: result.width,
+        height: result.height,
+      }
+    }
+    logger.warn(`Failed to add asset to project folder: ${result.error}`)
+  } catch (e) {
+    logger.warn(`Failed to add asset to project folder: ${e}`)
+  }
+  return null
+}
+
+/**
+ * Copy a file to project storage without thumbnail generation (audio path).
+ */
+export async function addGenericAssetToProject(
+  srcPath: string,
+  projectId: string,
+): Promise<{ path: string } | null> {
+  try {
+    const result = await window.electronAPI.addGenericAssetToProject({ srcPath, projectId })
+    if (result.success) {
+      return { path: result.path }
+    }
+    logger.warn(`Failed to copy file to project folder: ${result.error}`)
+  } catch (e) {
+    logger.warn(`Failed to copy file to project folder: ${e}`)
+  }
+  return null
+}