## What
Standardizes how models are serialized across web, API, and Sync
responses by relying on Eloquent `$hidden` + accessors on the models
themselves, instead of ad-hoc `select` scopes and per-controller field
picking.
Touches 9 models (`Account`, `Bank`, `Budget`, `Category`, `Label`,
`LoanDetail`, `RealEstateDetail`, `Transaction`, plus pivot hiding) and
the controllers/middleware that consumed the old ad-hoc shapes.
## Why
- Single source of truth for response shape lives on the model, aligned
with Wayfinder model typegen.
- Removes duplicated field-selection logic scattered across controllers.
- Continues the duplication-removal PR series (#475–#483).
## How
- Hide internal columns and pivots via `$hidden`; expose computed fields
via accessors.
- Controllers return full models / load full relations rather than
hand-picked columns.
- `HandleInertiaRequests` slimmed down to match.
## Notes for reviewers
- Per-commit breakdown: each model standardized in its own commit for
easy review.
- Tests added/updated for each model to assert the serialized shape
(hidden columns absent, relations present).
- Full suite: 1382 passed / 1 skipped / 0 failed. `pint` clean.
## Summary
- Adds loan detail tracking (interest rate, term, start date, original
amount) to loan-type accounts, following the existing
`real_estate_details` pattern
- Implements `LoanAmortizationService` with standard amortization math
to automatically project month-to-month balance evolution
- Shows projected future balances as a dashed line on the account
balance chart, visually distinct from historical data
- Adds a scheduled command (`loans:generate-balances`) to auto-generate
monthly balance entries for loan accounts
- Includes 36 tests (10 unit for pure math, 26 feature for CRUD, API
projections, command, and authorization)
## Changes
### Backend
- **Migration**: `loan_details` table (UUID PK, unique `account_id` FK,
interest rate, term, start date, original amount)
- **LoanDetail model** + factory with `Account::loanDetail()` HasOne
relationship
- **LoanAmortizationService**: `calculateMonthlyPayment`,
`calculateRemainingBalance`, `generateProjection`, `projectFromBalance`,
`calculateRemainingMonths`, `getBalanceAtDate`
- **GenerateMonthlyLoanBalances** command: runs monthly on 1st, skips
existing entries
- **LoanDetailController**: PATCH endpoint for editing loan details from
show page
- **Settings\AccountController**: creates/updates `LoanDetail` on
store/update
- **DashboardAnalyticsController**: appends projected data points with
`projected: true` flag
- **Validation**: loan-specific rules in StoreAccountRequest and
UpdateAccountRequest
### Frontend
- **AccountForm**: loan fields (rate, term, start date, original amount)
shown when `type === 'loan'`
- **Create/Edit dialogs**: pass loan data fields in POST/PATCH payloads
- **Show page**: `LoanDetailsCard` component with edit/read modes,
computed monthly payment and remaining months
- **Balance chart**: new `ComposedChart` branch with dashed `Line`
overlay for projected data points
- **Types**: `LoanDetail` interface in `account.ts`
Víctor Falcón