fix: Prevent sys.exit() from killing web UI when services are unreachable

wait_and_exit() called time.sleep() (blocking the async event loop) then
sys.exit() which raised SystemExit — a BaseException that main_with_restart()
didn't catch. This killed the entire process including the web UI.

Now main_with_restart() catches non-zero SystemExit and restarts gracefully,
and wait_and_exit() no longer blocks the event loop with time.sleep().

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: lolimmlost

main.py

@@ -111,6 +111,11 @@ async def main_with_restart():
     while True:
         try:
             await main()
+        except SystemExit as e:
+            if e.code == 0:
+                raise  # Clean shutdown (e.g. SIGTERM), don't restart
+            logger.error("Main loop exited (unreachable service). Restarting in 30 seconds...")
+            await asyncio.sleep(30)
         except Exception as e:
             logger.error(f"Main loop crashed: {e}. Restarting in 30 seconds...")
             await asyncio.sleep(30)

src/utils/common.py

@@ -91,8 +91,10 @@ async def make_request(
 
 def wait_and_exit(seconds=30):
     logger.info(f"Decluttarr will wait for {seconds} seconds and then exit.")
-    time.sleep(seconds)
-    sys.exit()
+    # Raise SystemExit instead of blocking with time.sleep(), so the async
+    # event loop (and web UI) stays responsive. main_with_restart() catches
+    # SystemExit and handles the retry delay.
+    sys.exit(1)
 
 
 def extract_json_from_response(response, key: str | None = None):