feat(node): skip a file the disk stops answering for, then pause its root

A Windows tester's scan stuck for good on one directory of a large disk:
one read that never returned held the indexer's only thread, and with it
every root behind that one.

- A disk call is timed by its silence, not its length: each directory
  entry listed and each megabyte read counts as an answer. After 60 s of
  silence the call is abandoned on its daemon thread, the file is noted
  unread and the scan goes on.
- Three silent files in a row pause the root (not persisted). Resume
  skips the files already known to give no answer; a restart, a replug
  or a change to the file retries them.
- The walk is per directory with os.scandir: a subdirectory that cannot
  be listed costs itself, and a listing that stops answering pauses the
  root at once. A scan no longer stats anything from the event loop.
- The log names the file after 10 s of silence, the indexing band shows
  it, and Group settings shows the paused root, where it stuck and the
  unread files with their reason, on the node's machine only.
- generate_http_api.py writes LF on Windows too.

Verified with real kernel-blocked opens (an unacknowledged oplock) in the
installed frozen app.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
index 367efa0..d4ad64f 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/zh-CN.js
@@ -852,6 +852,7 @@ export default {
   'indexdock.open': "打开此群组的设置",
   'indexdock.hide': "隐藏，直到下一次索引",
   'indexdock.pause': "暂停索引此文件夹",
+  'indexdock.slow': "磁盘已 {secs} 秒没有响应：{file}",
   'chat.load_older': '加载更早的 {n} 条消息',
   'chat.start_of_history': '对话开头',
   'chat.today': '今天',
@@ -978,6 +979,11 @@ export default {
   'node.root_pause': "暂停索引",
   'node.root_resume': "继续索引",
   'node.root_paused': "索引已暂停",
+  'node.root_stalled': "磁盘没有响应",
+  'node.root_stalled_hint': "节点已暂停索引 {name}：磁盘在 {file} 处没有响应。请检查磁盘，或将该文件移出，然后恢复索引。",
+  'node.unread_summary': "无法读取的文件：{count}",
+  'node.unread_no_answer': "磁盘没有响应",
+  'node.unread_more': "还有 {count} 个。",
   'node.root_remove_last': '每个群组至少需要一个目录',
   'node.root_path': '路径',
   'node.directory': '目录',