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/entities/banana_projectile.json

@@ -0,0 +1,41 @@
+{
+  "format_version": "1.21.0",
+  "minecraft:entity": {
+    "description": {
+      "identifier": "silverlabs:banana_projectile",
+      "is_spawnable": false,
+      "is_summonable": true,
+      "is_experimental": false
+    },
+
+    "components": {
+      "minecraft:collision_box": {
+        "width": 0.25,
+        "height": 0.25
+      },
+      "minecraft:physics": {},
+      "minecraft:pushable": {
+        "is_pushable": false,
+        "is_pushable_by_piston": false
+      },
+      "minecraft:projectile": {
+        "on_hit": {
+          "impact_damage": {
+            "damage": 0,
+            "knockback": true,
+            "semi_random_diff_damage": false
+          },
+          "remove_on_hit": {}
+        },
+        "power": 1.3,
+        "gravity": 0.05,
+        "inertia": 0.99,
+        "liquid_inertia": 0.6,
+        "anchor": 1,
+        "offset": [0, -0.1, 0],
+        "should_bounce": false,
+        "hit_sound": "mob.slime.small"
+      }
+    }
+  }
+}