fix: use UTF-8 for text file operations

s12_cron_scheduler/code.py

@@ -74,7 +74,7 @@ def run_bash(command: str) -> str:
 def run_read(path: str, limit: int | None = None) -> str:
     try:
         file_path = (WORKDIR / path).resolve()
-        lines = file_path.read_text().splitlines()
+        lines = file_path.read_text(encoding="utf-8").splitlines()
         if limit and limit < len(lines):
             lines = lines[:limit] + [f"... ({len(lines) - limit} more lines)"]
         return "\n".join(lines)
@@ -86,7 +86,7 @@ def run_write(path: str, content: str) -> str:
     try:
         file_path = (WORKDIR / path).resolve()
         file_path.parent.mkdir(parents=True, exist_ok=True)
-        file_path.write_text(content)
+        file_path.write_text(content, encoding="utf-8")
         return f"Wrote {len(content)} bytes to {path}"
     except Exception as error:
         return f"Error: {error}"
@@ -95,10 +95,10 @@ def run_write(path: str, content: str) -> str:
 def run_edit(path: str, old_text: str, new_text: str) -> str:
     try:
         file_path = (WORKDIR / path).resolve()
-        text = file_path.read_text()
+        text = file_path.read_text(encoding="utf-8")
         if old_text not in text:
             return f"Error: text not found in {path}"
-        file_path.write_text(text.replace(old_text, new_text, 1))
+        file_path.write_text(text.replace(old_text, new_text, 1), encoding="utf-8")
         return f"Edited {path}"
     except Exception as error:
         return f"Error: {error}"
@@ -366,7 +366,7 @@ def save_durable_jobs():
             f"{DURABLE_PATH.name}.{os.getpid()}.{threading.get_ident()}.tmp"
         )
         try:
-            temporary.write_text(json.dumps(payload, indent=2))
+            temporary.write_text(json.dumps(payload, indent=2), encoding="utf-8")
             os.replace(temporary, DURABLE_PATH)
         finally:
             temporary.unlink(missing_ok=True)
@@ -376,7 +376,7 @@ def load_durable_jobs():
     if not DURABLE_PATH.exists():
         return
     try:
-        payload = json.loads(DURABLE_PATH.read_text())
+        payload = json.loads(DURABLE_PATH.read_text(encoding="utf-8"))
         if not isinstance(payload, list):
             raise ValueError("expected a JSON list")
     except (OSError, json.JSONDecodeError, ValueError) as error: