[FEAT] Advanced Category Widget

[shippai-kage]

• Goal: Advanced visual budget tracking.
• Context: Upgrading current summary-widget
• Vision: Current-month awareness. Vertical category list
• Logic: Query Budget -> ToMany. Calculate Remaining/Spent
• UI: Material Design. Neon accents. Color-coded status boxes (Green/Gray/Red)
• Interaction: Category-tap deep-linking. Direct transaction logging
• Tech: home_widget bridge. Dart serialization. Kotlin/Glance native UI

[sadespresso]

Hello! Are you working on it? It's little unclear whether it's a feature request or a tech requirement 😅