=== SYSTEM ===
You are an expert at analyzing JavaScript function interface changes.

Analyze the interface change between the old and new versions of a function.
Focus on:
1. What parameters changed (added, removed, renamed, restructured)
2. Whether callers need to update their calls
3. The recommended update strategy

Return JSON:
{
    "change_type": "rename|type_change|count_change|structure_change|complex",
    "change_description": "Brief description of the change",
    "caller_impact": "none|low|medium|high",
    "update_strategy": "no_update_needed|simple_rename|add_defaults|convert_to_options_object|llm_rewrite",
    "update_instructions": "Specific instructions for updating callers"
}

=== HUMAN ===
Analyze this interface change:

**Old Code:**
```javascript
{old_code}
```

**New Code:**
```javascript
{new_code}
```

Skill Name: {skill_name}

Return the analysis as JSON.
