feat(monkey): add cheeky banana-throwing monkey addon

New silverlabs:cheeky_monkey mob that wanders the lobby watching players
and throwing harmless (knockback-only) silverlabs:banana_projectile at
them. Drops 1-2 silverlabs:banana (food) on death. Spawn rules target
jungle biomes for future deployment to survival worlds; for now the pack
is bind-mounted into the lobby service only.

Also bundles a stray docker-compose tidy from earlier local work
(Jamie's world seed pinned, pet addons dropped from Jamie).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

monkey-addon/monkey_BP/loot_tables/entities/cheeky_monkey.json

@@ -0,0 +1,20 @@
+{
+  "pools": [
+    {
+      "rolls": 1,
+      "entries": [
+        {
+          "type": "item",
+          "name": "silverlabs:banana",
+          "weight": 1,
+          "functions": [
+            {
+              "function": "set_count",
+              "count": { "min": 1, "max": 2 }
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}