Fix metrics store access

handlers/system.py

@@ -9,7 +9,8 @@ from services.http_checks import get_url_checks, check_url
 from services.queue import enqueue
 from services.updates import list_updates, apply_updates
 from services.runner import run_cmd
-from state import UPDATES_CACHE, REBOOT_PENDING, METRICS_STORE
+import state
+from state import UPDATES_CACHE, REBOOT_PENDING
 from services.metrics import summarize
 
 
@@ -60,10 +61,10 @@ async def urls(msg: Message):
 async def metrics(msg: Message):
     if not is_admin_msg(msg):
         return
-    if METRICS_STORE is None:
+    if state.METRICS_STORE is None:
         await msg.answer("⚠️ Metrics not initialized", reply_markup=system_kb)
         return
-    await msg.answer(summarize(METRICS_STORE, minutes=15), reply_markup=system_kb)
+    await msg.answer(summarize(state.METRICS_STORE, minutes=15), reply_markup=system_kb)
 
 
 @dp.message(F.text == "📦 Updates")