ql-lg-server: Quake Live LG vampiric practice server in Docker

One-command setup (SteamCMD + minqlx build), .env settings with a
listed/unlisted switch, three factories (lgvamp, lgvamp_nolag, lgvamp100),
warmup-text and welcome minqlx plugins, watchdog/backup/daily-restart,
docs for admins and players.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

tools/test_qlq.py

@@ -0,0 +1,43 @@
+import unittest
+from qlq import is_alive_reply, parse_rcon_status, humans
+
+# QL with sv_master 0 ignores getstatus/getinfo/A2S; it does answer getchallenge (real reply below).
+ALIVE = b"\xff\xff\xff\xffprint\nNo Steam auth token.\n"
+
+STATUS = """zmq RCON command from 3163ba8dd0fa4fab8164165fc9194153: status
+map: thunderstruck
+num score ping name            lastmsg address               qport rate  steamid
+--- ----- ---- --------------- ------- --------------------- ----- ----- -----------------
+  0    12    0 Hunter                0 bot                       0 16384 0
+  1     7   48 player                0 100.64.1.2:27960        354 25000 76561198000000000
+"""
+
+class Alive(unittest.TestCase):
+    def test_challenge_reply_is_alive(self):
+        self.assertTrue(is_alive_reply(ALIVE))
+
+    def test_garbage_is_not_alive(self):
+        self.assertFalse(is_alive_reply(b"hello"))
+        self.assertFalse(is_alive_reply(b""))
+
+class RconStatus(unittest.TestCase):
+    def test_map_and_players(self):
+        mapname, players = parse_rcon_status(STATUS)
+        self.assertEqual(mapname, "thunderstruck")
+        self.assertEqual([p[2] for p in players], ["Hunter", "player"])
+
+    def test_bots_are_not_humans(self):
+        _, players = parse_rcon_status(STATUS)
+        self.assertEqual(humans(players), 1)
+
+    def test_empty_server(self):
+        mapname, players = parse_rcon_status(STATUS.split("  0    12")[0])
+        self.assertEqual(mapname, "thunderstruck")
+        self.assertEqual(players, [])
+        self.assertEqual(humans(players), 0)
+
+    def test_no_rcon_output_is_none(self):
+        self.assertIsNone(parse_rcon_status("(no output: ok, or server down / map loading / wrong password)"))
+
+if __name__ == "__main__":
+    unittest.main()