Categorize wishlist items

[tylergannon]

User Story

As an expat with many items to buy
I want to categorize my wishlist items (electronics, clothing, gifts, etc.)
So that I can organize my shopping and plan store visits efficiently

Acceptance Criteria

• User can assign a category when adding an item
• User can change an item's category after creation
• Default categories are provided (Electronics, Clothing, Household, Gifts, Health, Other)
• Items can be filtered/grouped by category in the list view
• Categories are visually distinguishable (color coding or icons)

Notes

• Categories help plan which stores to visit (electronics at Best Buy, gifts at local shops)
• Foundation for future store-mapping features
• Keep category list simple for MVP