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, 11 insertions, 0 deletions

diff --git a/packages/meshbay-hub/src/meshbay_hub/static/index-dock-model.js b/packages/meshbay-hub/src/meshbay_hub/static/index-dock-model.js
index ed81e7c..f0f9aa0 100644
--- a/packages/meshbay-hub/src/meshbay_hub/static/index-dock-model.js
+++ b/packages/meshbay-hub/src/meshbay_hub/static/index-dock-model.js
@@ -35,9 +35,18 @@ export function fromLoopback(g) {
     filesDone: g.files_done || 0,
     filesTotal: g.files_total || 0,
     queued: Array.isArray(g.queued) ? g.queued : [],
+    // What the disk has given no answer on, and for how long. A path, so the
+    // loopback answer only: a push carries counters and nothing else.
+    slowPath: g.slow_path || '',
+    slowSecs: g.slow_secs || 0,
   };
 }
 
+/** The last segment of a path, whichever way its separators lean. */
+export function baseName(path) {
+  return String(path || '').split(/[\\/]/).filter(Boolean).pop() || '';
+}
+
 export function fromPush(groupId, s, roots) {
   const pos = Number.isInteger(s.root_pos) ? s.root_pos : -1;
   const known = pos >= 0 && Array.isArray(roots) && roots[pos];
@@ -52,6 +61,8 @@ export function fromPush(groupId, s, roots) {
     filesDone: s.files_done || 0,
     filesTotal: s.files_total || 0,
     queued: Number.isInteger(s.queued) ? s.queued : 0,
+    slowPath: '',
+    slowSecs: 0,
   };
 }