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_RP/models/entity/banana_projectile.geo.json

@@ -0,0 +1,41 @@
+{
+  "format_version": "1.12.0",
+  "minecraft:geometry": [
+    {
+      "description": {
+        "identifier": "geometry.banana_projectile",
+        "texture_width": 16,
+        "texture_height": 16,
+        "visible_bounds_width": 1,
+        "visible_bounds_height": 1,
+        "visible_bounds_offset": [0, 0.25, 0]
+      },
+      "bones": [
+        { "name": "root", "pivot": [0, 0, 0] },
+        {
+          "name": "banana",
+          "parent": "root",
+          "pivot": [0, 0, 0],
+          "rotation": [0, 0, 25],
+          "cubes": [
+            {
+              "origin": [-2, 0, -0.5],
+              "size": [4, 1, 1],
+              "uv": [0, 0]
+            },
+            {
+              "origin": [-3, 0.5, -0.5],
+              "size": [1, 1, 1],
+              "uv": [0, 2]
+            },
+            {
+              "origin": [2, 0.5, -0.5],
+              "size": [1, 1, 1],
+              "uv": [0, 2]
+            }
+          ]
+        }
+      ]
+    }
+  ]
+}