dws drive download always fails with internalError on all files

[Marichie]

  1 ## Environment
  2 - dws version: v1.0.43 (4c5f1fa, 2026-06-26)
  3 - OS: Linux aarch64 (ARM64)
  4 - Auth: OAuth device flow (scan QR)
  5 - Corp CLI access: enabled by admin
  6 - PAT scopes: drive:download and other drive scopes granted
  7 
  8 ## Problem
  9 
 10 `dws drive download --node <fileId> --output /tmp/` fails 100% of the time for all files 
    with:
{
  "error": {
    "server_error_code": "internalError",
    "message": "处理钉盘请求时发生内部错误，请稍后重试。"
  }
}
  
  Other drive commands work fine on the same MCP endpoint:
  - ✅ `dws drive info` — returns file metadata
  - ✅ `dws drive list` — lists files
  - ✅ `dws drive list-spaces` — lists spaces
  - ❌ `dws drive download` — always internalError
  
  ## What I tried
  
 - Multiple files (PDF, XLSX, 11KB ~ 3.5MB) → all fail
 - With `--space-id` → still fails
 - Upgraded from `dev` to v1.0.43 → still fails
 - Re-login + re-grant PAT → still fails
 - Organization CLI access confirmed enabled
 
 ## Trace IDs
 
 - `0bab027317824900125762278e08d1` (latest, v1.0.43 + fresh login)
 - `2132f5ca17824886294736091e08d7` (v1.0.43 first attempt)
 - `2104a64c17824853389867513e08ee` (dev version)
 
 ## Question
 
 Is this a known issue with the MCP gateway's `download_file` tool? Or is there a 
    configuration I'm missing?
 
 Any workaround appreciated — this blocks our data ingest pipeline.