Megalodon: manage ARK servers over RCON from a web dashboard

Watches any number of ARK:SE servers (RCON for players and chat, the query
port for map, version and player cap), records joins, leaves, chat and an
audit trail, and keeps a player database across servers.

Control: save, broadcast, chat, whisper, kick, time of day, MOTD, wild dino
wipe, a raw console with history and macros, restarts with timed warnings and
a world save, optional start command and auto-start. Bans are kept by
Megalodon: timed, cluster-wide and re-enforced when the player returns.

Automation: schedules (every N or at times of day), Discord/ntfy/webhook
notifications, welcome message, chat word filter.

Access: viewer, moderator and admin roles, API tokens, Prometheus metrics.
cmd/fakeark simulates a server for trying it out.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

megalodon.example.json

@@ -0,0 +1,30 @@
+{
+  "listen": "127.0.0.1:8480",
+  "data_dir": "data",
+  "poll_seconds": 10,
+  "chat_seconds": 3,
+  "servers": [
+    {
+      "id": "island",
+      "name": "The Island",
+      "host": "192.168.1.20",
+      "rcon_port": 27020,
+      "password": "your ServerAdminPassword",
+      "query_port": 27015,
+      "start_command": "docker start ark-island",
+      "auto_start": false
+    }
+  ],
+  "jobs": [
+    { "id": "save", "name": "Save every 30 minutes", "enabled": true, "action": "save", "every": "30m" },
+    { "id": "dawn", "name": "Daily restart", "enabled": true, "action": "restart", "at": ["04:30"], "countdown": "15m", "reason": "Daily restart" }
+  ],
+  "macros": [
+    { "name": "Noon", "commands": ["SetTimeOfDay 12:00:00"], "role": "moderator" }
+  ],
+  "notify": [
+    { "name": "Discord", "kind": "discord", "url": "https://discord.com/api/webhooks/…", "events": ["join", "offline", "online", "restart", "ban"] }
+  ],
+  "welcome": { "enabled": true, "message": "Welcome to {server}, {name}! {players} online." },
+  "chat_filter": { "enabled": false, "words": [], "action": "warn", "strikes": 3, "ban_minutes": 60 }
+}