From 54463baf0ea8d27dcef1f6be18f42346d06014f8 Mon Sep 17 00:00:00 2001
From: Matt Van Horn <455140+mvanhorn@users.noreply.github.com>
Date: Sun, 5 Jul 2026 04:11:12 -0700
Subject: [PATCH] fix: fsync parent dir after direct-write fallback for
 durability parity

---
 app/state_store.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/app/state_store.py b/app/state_store.py
index 57ead6c..940a882 100644
--- a/app/state_store.py
+++ b/app/state_store.py
@@ -169,6 +169,8 @@ class AtomicJsonStore:
             f.write(text)
             f.flush()
             self._best_effort_fsync(f.fileno())
+        # Make the new directory entry durable too, matching the atomic path.
+        self._fsync_directory(os.path.dirname(self.path) or ".")
 
     @staticmethod
     def _best_effort_fsync(fileno: int) -> None: