Write complete API examples

Always provide complete, context-rich code examples in API documentation. Examples should show the full usage context and avoid abbreviated or partial code snippets that may confuse developers.

Key guidelines:

• Show the complete context (e.g., wrapping code in create_table blocks)
• Avoid interactive prompts (like irb>)
• Use proper formatting tags for code containing spaces ()
• Include realistic variable names and values

Example:

# ❌ Unclear context
t.bigint :account_id

# ✅ Complete context
create_table :subscriptions do |t|
  t.bigint :account_id
  t.bigint :event_ids, array: true, default: []
end