fix(node): pin utf-8 (and LF) on every text file the node reads or writes

node.toml, the keystore envelope, the unlock key, the loopback UI token,
pairing/invite code files and the denylist were all read and written with
the platform default encoding and newline translation. On Windows that is
cp1252 + CRLF: a node.toml or keystore holding any non-ASCII byte failed to
load, and ops.py's line-based node.toml editor round-tripped CRLF in and
LF out.

Every read is now `encoding="utf-8"`; every write is `encoding="utf-8",
newline="\n"` so the files stay LF whatever the OS. No-op where the locale
was already UTF-8.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/roster.py b/packages/meshbay-node/src/meshbay_node/roster.py
index a50dd3e..c78281b 100644
--- a/packages/meshbay-node/src/meshbay_node/roster.py
+++ b/packages/meshbay-node/src/meshbay_node/roster.py
@@ -915,6 +915,6 @@ def write_code_file(data_dir: Path, code: str, expires_at: str,
     path = data_dir / name
     path.parent.mkdir(parents=True, exist_ok=True)
     from meshbay_node.platform import chmod_private
-    path.write_text(f"{code}\nexpires {expires_at}\n")
+    path.write_text(f"{code}\nexpires {expires_at}\n", encoding="utf-8", newline="\n")
     chmod_private(path)
     return path