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/it.js b/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
index 5578028..0751692 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/locales/it.js
@@ -876,6 +876,7 @@ export default {
   'indexdock.open': "Apri le impostazioni di questo gruppo",
   'indexdock.hide': "Nascondi fino alla prossima indicizzazione",
   'indexdock.pause': "Sospendi l'indicizzazione di questa cartella",
+  'indexdock.slow': "Nessuna risposta dal disco da {secs} s: {file}",
   'chat.load_older': 'Carica {n} messaggi precedenti',
   'chat.start_of_history': 'Inizio della conversazione',
   'chat.today': 'Oggi',
@@ -1004,6 +1005,11 @@ export default {
   'node.root_pause': "Sospendi l'indicizzazione",
   'node.root_resume': "Riprendi l'indicizzazione",
   'node.root_paused': "indicizzazione sospesa",
+  'node.root_stalled': "il disco non risponde",
+  'node.root_stalled_hint': "Il node ha sospeso l'indicizzazione di {name}: il disco non ha risposto su {file}. Controlla il disco, o sposta quel file altrove, poi riprendi l'indicizzazione.",
+  'node.unread_summary': "File che non è stato possibile leggere: {count}",
+  'node.unread_no_answer': "nessuna risposta dal disco",
+  'node.unread_more': "E altri {count}.",
   'node.root_remove_last': 'Un gruppo ha bisogno di almeno una directory',
   'node.root_path': 'Percorso',
   'node.directory': 'Directory',