## Objects

Object defined — links to a behavior:
```yaml
id: copper_rock
name: copper rock
behavior: mine_copper
```

Tree object:
```yaml
id: oak_tree
name: oak tree
behavior: chop_oak
```

Hidden object — doesn't appear in room's object list, only discoverable via description or experimentation:
```yaml
id: iron_gate
name: iron gate
behavior: iron_gate_toggle
hidden: true
props:
  description: "A heavy iron gate set into the north wall."
```

Decorative object (no behavior):
```yaml
id: lumby_fountain
name: town fountain
behavior: ""
props:
  description: "Clear water sparkles in the sunlight."
```

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