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, 9 insertions, 9 deletions

diff --git a/packages/meshbay-node/src/meshbay_node/ops.py b/packages/meshbay-node/src/meshbay_node/ops.py
index 7a8e8ac..40de755 100644
--- a/packages/meshbay-node/src/meshbay_node/ops.py
+++ b/packages/meshbay-node/src/meshbay_node/ops.py
@@ -453,7 +453,7 @@ async def attach_group(state: dict, name: str, shared_dir: str,
     if not separate_upload:
         block += f'  upload = true\n'
     try:
-        with conf_path.open("a") as f:
+        with conf_path.open("a", encoding="utf-8", newline="\n") as f:
             f.write(block)
     except OSError as e:
         raise OpError(f"Cannot write {conf_path}: {e}", status=500) from e
@@ -485,7 +485,7 @@ async def detach_group(state: dict, name: str) -> dict:
     group = match[0]
 
     conf_path = Path(state.get("config_path") or DEFAULT_CONFIG_PATH)
-    text = conf_path.read_text()
+    text = conf_path.read_text(encoding="utf-8")
     lines = text.split("\n")
 
     rng = _find_group_range(lines, group.id)
@@ -497,7 +497,7 @@ async def detach_group(state: dict, name: str) -> dict:
         end += 1
 
     new_lines = lines[:start] + lines[end:]
-    conf_path.write_text("\n".join(new_lines))
+    conf_path.write_text("\n".join(new_lines), encoding="utf-8", newline="\n")
     log.info("Group detached: %s (%s) removed from %s", group.name, group.id[:8], conf_path)
 
     return {"group_id": group.id, "name": group.name, "config": str(conf_path),
@@ -534,7 +534,7 @@ def _update_node_toml(conf_path: Path, updates: dict) -> None:
     """
     if not conf_path.exists():
         return
-    text = conf_path.read_text()
+    text = conf_path.read_text(encoding="utf-8")
     lines = text.split("\n")
 
     node_start = None
@@ -575,13 +575,13 @@ def _update_node_toml(conf_path: Path, updates: dict) -> None:
         lines.insert(node_end, _format_value(key, value))
         node_end += 1
 
-    conf_path.write_text("\n".join(lines))
+    conf_path.write_text("\n".join(lines), encoding="utf-8", newline="\n")
 
 
 def _insert_roots_block(conf_path: Path, group_id: str,
                         root_block: str) -> None:
     """Append a [[groups.roots]] block inside the matching [[groups]] section."""
-    text = conf_path.read_text()
+    text = conf_path.read_text(encoding="utf-8")
     lines = text.split("\n")
 
     rng = _find_group_range(lines, group_id)
@@ -597,13 +597,13 @@ def _insert_roots_block(conf_path: Path, group_id: str,
                  + [""]
                  + root_block.rstrip("\n").split("\n")
                  + lines[insert_at:])
-    conf_path.write_text("\n".join(new_lines))
+    conf_path.write_text("\n".join(new_lines), encoding="utf-8", newline="\n")
 
 
 def _remove_roots_block(conf_path: Path, group_id: str,
                         resolved_path: str) -> None:
     """Remove a [[groups.roots]] block whose resolved path matches."""
-    text = conf_path.read_text()
+    text = conf_path.read_text(encoding="utf-8")
     lines = text.split("\n")
 
     rng = _find_group_range(lines, group_id)
@@ -631,7 +631,7 @@ def _remove_roots_block(conf_path: Path, group_id: str,
                     if rm_start > 0 and lines[rm_start - 1].strip() == "":
                         rm_start -= 1
                     new_lines = lines[:rm_start] + lines[rs_end:]
-                    conf_path.write_text("\n".join(new_lines))
+                    conf_path.write_text("\n".join(new_lines), encoding="utf-8", newline="\n")
                     return
 
     raise OpError(f"Root path not found in config", status=404)