diff --git a/cron/scheduler.py b/cron/scheduler.py
index 90683b6cc1c6..c5f2b9eb0b1d 100644
--- a/cron/scheduler.py
+++ b/cron/scheduler.py
@@ -27,7 +27,7 @@
         import msvcrt
     except ImportError:
         msvcrt = None
-from pathlib import Path
+from pathlib import Path, PurePath
 from typing import List, Optional
 
 # Add parent directory to path for imports BEFORE repo-level imports.
@@ -693,6 +693,13 @@ def _get_script_timeout() -> int:
     return _DEFAULT_SCRIPT_TIMEOUT
 
 
+def _format_bash_script_path(path: PurePath) -> str:
+    """Return a bash-safe script path for the current platform."""
+    if os.name == "nt":
+        return path.as_posix()
+    return str(path)
+
+
 def _run_job_script(script_path: str) -> tuple[bool, str]:
     """Execute a cron job's data-collection script and capture its output.
 
@@ -769,7 +776,7 @@ def _run_job_script(script_path: str) -> tuple[bool, str]:
                 "On Windows, install Git for Windows (which ships Git Bash) "
                 "or rewrite the script as Python (.py)."
             )
-        argv = [_bash, str(path)]
+        argv = [_bash, _format_bash_script_path(path)]
     else:
         argv = [sys.executable, str(path)]
 
diff --git a/tests/cron/test_scheduler.py b/tests/cron/test_scheduler.py
index e0cb1cc155ed..10b3f865b347 100644
--- a/tests/cron/test_scheduler.py
+++ b/tests/cron/test_scheduler.py
@@ -3,11 +3,12 @@
 import json
 import logging
 import os
+from pathlib import PurePosixPath, PureWindowsPath
 from unittest.mock import AsyncMock, patch, MagicMock
 
 import pytest
 
-from cron.scheduler import _resolve_origin, _resolve_delivery_target, _deliver_result, _send_media_via_adapter, run_job, SILENT_MARKER, _build_job_prompt
+from cron.scheduler import _resolve_origin, _resolve_delivery_target, _deliver_result, _send_media_via_adapter, run_job, SILENT_MARKER, _build_job_prompt, _format_bash_script_path
 from tools.env_passthrough import clear_env_passthrough
 from tools.credential_files import clear_credential_files
 
@@ -70,6 +71,24 @@ def test_non_dict_origin_returns_none_instead_of_crashing(self, non_dict_origin)
         assert _resolve_origin(job) is None
 
 
+class TestFormatBashScriptPath:
+    def test_uses_forward_slashes_on_windows(self):
+        with patch("cron.scheduler.os.name", "nt"):
+            formatted = _format_bash_script_path(
+                PureWindowsPath(r"C:\Users\denis\.hermes\scripts\hermes-backup.sh")
+            )
+
+        assert formatted == "C:/Users/denis/.hermes/scripts/hermes-backup.sh"
+
+    def test_keeps_posix_paths_unchanged(self):
+        path = PurePosixPath("/home/denis/.hermes/scripts/hermes-backup.sh")
+
+        with patch("cron.scheduler.os.name", "posix"):
+            formatted = _format_bash_script_path(path)
+
+        assert formatted == str(path)
+
+
 class TestResolveDeliveryTarget:
     def test_origin_delivery_preserves_thread_id(self):
         job = {