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, 8 insertions, 5 deletions

diff --git a/packages/meshbay-cli/src/meshbay_cli/tui/chat.py b/packages/meshbay-cli/src/meshbay_cli/tui/chat.py
index e4ea1fe..989ffe2 100644
--- a/packages/meshbay-cli/src/meshbay_cli/tui/chat.py
+++ b/packages/meshbay-cli/src/meshbay_cli/tui/chat.py
@@ -21,6 +21,7 @@ import os
 import time
 from pathlib import Path
 
+from meshbay_common.paths import long_path
 from rich.segment import Segment
 from rich.text import Text
 from textual import events
@@ -412,9 +413,10 @@ class ChatRoomScreen(Screen):
 
     async def _put(self, arg: str) -> None:
         path = Path(os.path.abspath(os.path.expanduser(arg)))
-        if not path.is_file():
+        if not os.path.isfile(long_path(path)):
             self.note(f"! {safe(arg)}: " + ("a folder; /put sends one file."
-                      if path.is_dir() else "no such file."), style="bold red")
+                      if os.path.isdir(long_path(path)) else "no such file."),
+                      style="bold red")
             return
         name = path.name
         if problems := refused_names([name], []):
@@ -430,9 +432,9 @@ class ChatRoomScreen(Screen):
             if found is None:
                 return
             _, folder = found
-            size = path.stat().st_size
+            size = os.stat(long_path(path)).st_size
             advance, queued = self._progress("↑", name, size)
-            with open(path, "rb") as fh:
+            with open(long_path(path), "rb") as fh:
                 def read(offset: int, length: int) -> bytes:
                     fh.seek(offset)
                     return fh.read(length)
@@ -475,7 +477,8 @@ class ChatRoomScreen(Screen):
                           style="bold red")
                 return
             target = Path.cwd() / name.rsplit("/", 1)[-1]
-            if target.exists() and not target.with_name(target.name + PART_SUFFIX).exists():
+            if os.path.exists(long_path(target)) and not os.path.exists(
+                    long_path(target.with_name(target.name + PART_SUFFIX))):
                 self.note(f"! {safe(str(target))} is here already; nothing was downloaded.",
                           style="bold red")
                 return