Inventory Management

Allow users to track spare parts inventory (chains, cassettes, brake pads, tubes, etc.) stored at home. The app would help users know what replacement parts they have available before a component needs servicing.

Cyclists with multiple bikes or who buy parts in bulk may lose track of which spare parts they have in stock. This could lead to:

• Ordering parts unnecessarily (duplicates)
• Running out of critical parts when needed
• Inefficient use of storage space

Add an "Inventory" section where users can:

• Log spare parts with quantities (e.g., "3× Shimano 11-speed chains")
• See compatibility with their bikes
• Get notified when inventory runs low
• Track which parts are installed vs. in storage