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, 7 insertions, 6 deletions

diff --git a/packages/meshbay-cli/src/meshbay_cli/commands/get.py b/packages/meshbay-cli/src/meshbay_cli/commands/get.py
index eec73c4..33a9637 100644
--- a/packages/meshbay-cli/src/meshbay_cli/commands/get.py
+++ b/packages/meshbay-cli/src/meshbay_cli/commands/get.py
@@ -12,7 +12,7 @@ import os
 from dataclasses import dataclass
 from pathlib import Path
 
-from meshbay_common.paths import fold
+from meshbay_common.paths import fold, long_path
 
 from ..client.groups import my_groups
 from ..client.names import UnsafeName, local_path
@@ -147,7 +147,8 @@ async def _run(ctx: Context, account, pool: Pool) -> int:
         planned.add(key)
         if changed:
             renamed.append((shown, target))
-        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))):
             if a.skip:
                 return
             if not a.force:
@@ -181,7 +182,7 @@ async def _run(ctx: Context, account, pool: Pool) -> int:
     for problem in problems:
         progress.note(f"meshbay-cli: {safe(problem)}")
     for d in dirs:
-        d.mkdir(parents=True, exist_ok=True)
+        os.makedirs(long_path(d), exist_ok=True)
     progress.plan(len(jobs), sum(int(j.entry["size"]) for j in jobs))
 
     failed = len(problems)
@@ -224,12 +225,12 @@ def _destination(dest: str | None, single_file: bool) -> tuple[Path, str | None]
         return Path.cwd(), None
     path = Path(dest).expanduser()
     if dest.endswith(("/", os.sep)):
-        path.mkdir(parents=True, exist_ok=True)
+        os.makedirs(long_path(path), exist_ok=True)
         return path, None
-    if path.is_dir():
+    if os.path.isdir(long_path(path)):
         return path, None
     if single_file:
-        if not path.parent.is_dir():
+        if not os.path.isdir(long_path(path.parent)):
             raise CliError(USAGE, f"{path.parent} is not a folder.")
         return path.parent, path.name
     raise CliError(USAGE, f"{dest} is not a folder (end it with / to create it).")