refactor: clean upload pipeline and restore draco delivery

lib/github.ts

@@ -6,8 +6,10 @@ import type { PushFile, RemoteFile } from './types'
 
 const LFS_BATCH_SIZE = 100
 
+type LogDetails = Record<string, string | number | boolean | undefined>
+
 function isHttpError(err: unknown): err is { status: number } {
-  return typeof err === 'object' && err !== null && 'status' in err && typeof (err as Record<string, unknown>).status === 'number'
+  return isRecord(err) && typeof err.status === 'number'
 }
 
 function getOctokit(): Octokit {
@@ -51,7 +53,7 @@ function formatElapsed(startedAt: number) {
   return `${((performance.now() - startedAt) / 1000).toFixed(1)}s`
 }
 
-function logInfo(step: string, action: string, startedAt: number, details?: Record<string, unknown>) {
+function logInfo(step: string, action: string, startedAt: number, details?: LogDetails) {
   console.info(`[INFO] ${step} -> ${action} | Timer: ${formatElapsed(startedAt)}`, details || '')
 }