Verbs let any Object have interactive handlers players can trigger.
Uses @verb decorator to mark methods that auto-register on instantiation.
- Object._verbs dict stores verb name to async handler mapping
- Object.register_verb(), get_verb(), has_verb() API
- @verb decorator marks methods with _verb_name attribute
- __post_init__ scans for decorated methods and registers them
- find_object() helper searches inventory then ground by name/alias
- Bound methods stored in _verbs (self already bound)
- Works on Object and all subclasses (Thing, Entity, etc)
- 18 tests covering registration, lookup, decoration, inheritance
