refactor: clean upload pipeline and restore draco delivery

lib/types.ts

@@ -1,5 +1,3 @@
-import type { AssetCategory } from './asset-classification'
-
 export interface ParsedFile {
   filename: string
   buffer: Buffer
@@ -11,8 +9,14 @@ export interface PushFile {
   contentBase64: string
 }
 
+export type GitModelMode = 'draco-glb' | 'keep-gltf'
+
+export type DriveAction = 'new' | 'replace'
+
 export type FileChange = 'new' | 'changed' | 'unchanged'
 
+export type AssetCategory = 'color' | 'diffuse' | 'roughness' | 'normal' | 'metalness' | 'height' | 'opacity' | 'orm' | 'ao' | 'assets'
+
 export interface FileDiff {
   name: string
   status: 'changed' | 'new' | 'deleted'
@@ -29,3 +33,21 @@ export interface PreparedAssetSummary {
   category?: AssetCategory
   compressed: boolean
 }
+
+export interface StagingUploadResult {
+  stagingId: string
+  folderName: string
+  filesCount: number
+}
+
+export interface PreparedGitAssetsResult {
+  filesToPush: PushFile[]
+  modelFilename: string
+  assetSummaries: PreparedAssetSummary[]
+  compressed: boolean
+  compressionError?: string
+}
+
+export interface PreparedStageAssetsResult extends PreparedGitAssetsResult {
+  folderName: string
+}