Introduces properties and loans as first-class financial entities:
- models_property.go: Property, Loan, LoanView, PropertyView, PropertyData
- store_property.go: full CRUD for finance_properties + finance_loans collections
- handler_property.go: GET/POST /property with add/edit/delete for both entities;
amortization helpers (EMI, remaining months, total interest)
- templates/property.html: summary equity cards, property cards with equity bar
and linked loan details, standalone loan cards with payoff progress
- base.html: "Property" nav link added to desktop and mobile drawer
- storeIface + mockStore updated with 10 new property/loan methods
Co-authored-by: Gonçalo Rodrigues <guga@Goncalos-MacBook-Pro.local>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
