From cc929c89328ca01c83c79841bfc70a7265457faa Mon Sep 17 00:00:00 2001
From: chihlasm <michael@chihlas.com>
Date: Thu, 2 Apr 2026 15:20:53 +0000
Subject: [PATCH] feat: add useFeatureFlag hook for feature gating

Selector-based hook reads from authStore.featureFlags.
Returns false for unknown keys (fail closed).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 frontend/src/hooks/useFeatureFlag.ts | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 frontend/src/hooks/useFeatureFlag.ts

diff --git a/frontend/src/hooks/useFeatureFlag.ts b/frontend/src/hooks/useFeatureFlag.ts
new file mode 100644
index 00000000..fd96ed0a
--- /dev/null
+++ b/frontend/src/hooks/useFeatureFlag.ts
@@ -0,0 +1,9 @@
+import { useAuthStore } from '@/store/authStore'
+
+/**
+ * Check if a feature flag is enabled for the current user.
+ * Returns false for unknown keys (fail closed).
+ */
+export function useFeatureFlag(key: string): boolean {
+  return useAuthStore((s) => s.featureFlags[key] ?? false)
+}