fix(cli): make the command-line client work on Windows

Its suite had only run on Linux. On Windows, against a real hub and node and
from the installed meshbay-cli.exe:

- secrets.enc was written in text mode (os.open without O_BINARY): every 0x0A
  of the ciphertext became CR LF and the saved session "does not open with
  its key" on the next run.
- isatty() is true for NUL, so a script run with `< NUL` or by the Task
  Scheduler was asked questions instead of told to pass --yes;
  output.terminal() checks for a real console.
- Ctrl+C waited for the selector loop's next timer, up to half a minute in
  `chat --follow`; the loop now points the signal wakeup at its self-pipe,
  as the proactor does.
- Right-click copy and paste raised: asyncio cannot start a process on the
  selector loop; the clipboard tool runs in a thread.
- Tab completion of remote paths ran on the default (proactor) loop, which
  never opens a node, and wrote in the locale encoding; the PowerShell script
  now reads it as UTF-8.
- `get -R` into a folder past MAX_PATH died with a traceback; get, put, the
  resume file and the interactive mode use the extended form at each disk
  call, as the node does.
- `groups` showed a SQLite hub's naive UTC time as local time.

The opt-in end-to-end suite now runs on Windows (16 tests: Chrome found under
Program Files and started with the real environment, VLC as the player, Ctrl+C
through a console of its own, PowerShell 5.1 completion of an accented name).

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

1 files changed, 6 insertions, 4 deletions

diff --git a/packages/meshbay-cli/src/meshbay_cli/tui/screens.py b/packages/meshbay-cli/src/meshbay_cli/tui/screens.py
index 0306325..39b5df3 100644
--- a/packages/meshbay-cli/src/meshbay_cli/tui/screens.py
+++ b/packages/meshbay-cli/src/meshbay_cli/tui/screens.py
@@ -14,9 +14,11 @@ the node's operator) or none is, then asked once for the batch.
 
 import asyncio
 import contextlib
+import os
 import threading
 from pathlib import Path
 
+from meshbay_common.paths import long_path
 from rich.text import Text
 from textual.app import ComposeResult
 from textual.binding import Binding
@@ -214,8 +216,8 @@ class MainScreen(Screen):
                     problems.append(str(e))
         for p in problems:
             self.app.notify(p, severity="warning", markup=False)
-        existing = [t for _, t in plan if t.exists()
-                    and not t.with_name(t.name + PART_SUFFIX).exists()]
+        existing = [t for _, t in plan if os.path.exists(long_path(t))
+                    and not os.path.exists(long_path(t.with_name(t.name + PART_SUFFIX)))]
         overwrite = False
         if existing:
             names = ", ".join(safe(t.name) for t in existing[:5]) + (
@@ -229,7 +231,7 @@ class MainScreen(Screen):
             if not overwrite:
                 plan = [(e, t) for e, t in plan if t not in existing]
         for d in dirs:
-            await asyncio.to_thread(d.mkdir, parents=True, exist_ok=True)
+            await asyncio.to_thread(os.makedirs, long_path(d), exist_ok=True)
         remote.marks.clear()
         remote.redraw()
         session = await self.pool.session(group)
@@ -320,7 +322,7 @@ class MainScreen(Screen):
             self.strip.update_job(job, state="running")
             lock = threading.Lock()
             try:
-                with open(item.local, "rb") as fh:
+                with open(long_path(item.local), "rb") as fh:
                     def read(offset: int, length: int) -> bytes:
                         with lock:
                             fh.seek(offset)