refactor: simplify upload rules and remove destination flow

lib/upload-api.ts

@@ -16,12 +16,10 @@ export interface CheckResult {
 
 function buildUploadFormData(
   folder: FolderEntry,
-  destination: string,
   extra?: Record<string, string>,
 ): FormData {
   const formData = new FormData()
   formData.append('folderName', folder.folderName)
-  formData.append('destination', destination)
 
   if (extra) {
     for (const [key, value] of Object.entries(extra)) {
@@ -52,11 +50,10 @@ function buildUploadFormData(
  */
 export async function checkFolderDiffs(
   folder: FolderEntry,
-  destination: string,
   secret: string,
   signal?: AbortSignal,
 ): Promise<CheckResult> {
-  const formData = buildUploadFormData(folder, destination)
+  const formData = buildUploadFormData(folder)
   const res = await fetch('/api/upload/check', {
     method: 'POST',
     headers: { 'x-upload-secret': secret.trim() },
@@ -86,11 +83,10 @@ export async function checkFolderDiffs(
 export async function uploadDrive(
   folder: FolderEntry,
   secret: string,
-  destination: string,
   action: 'new' | 'replace',
   signal?: AbortSignal,
 ): Promise<{ success: boolean; error?: string }> {
-  const formData = buildUploadFormData(folder, destination, { action })
+  const formData = buildUploadFormData(folder, { action })
 
   try {
     const res = await fetch('/api/upload/drive', {
@@ -118,11 +114,10 @@ export async function uploadDrive(
 export async function uploadGit(
   folder: FolderEntry,
   secret: string,
-  destination: string,
   onProgress: (pct: number) => void,
   signal?: AbortSignal,
 ): Promise<{ success: boolean; filename?: string; error?: string }> {
-  const formData = buildUploadFormData(folder, destination)
+  const formData = buildUploadFormData(folder)
 
   onProgress(10)