Delay manual snapshot refresh

tests/test_ui_render.py

@@ -1,4 +1,5 @@
 import unittest
+from pathlib import Path
 
 from frigate_camera_control_bridge.ui import camera_stream_url, render_page
 
@@ -114,6 +115,12 @@ class UiRenderTest(unittest.TestCase):
         self.assertIn("<h2>Camera Friendly</h2>", html)
         self.assertNotIn("<h2>camera_key</h2>", html)
 
+    def test_manual_snapshot_refresh_waits_before_fetch(self):
+        script = Path("frigate_camera_control_bridge/static/app.js").read_text(encoding="utf-8")
+
+        self.assertIn("SNAPSHOT_REFRESH_DELAY_MS = 2000", script)
+        self.assertIn("window.setTimeout", script)
+
 
 if __name__ == "__main__":
     unittest.main()