- i18n.js with 130+ translation keys for es/en, loaded in all 11 templates
- sidebar.js uses t() for all nav labels, adds MX/US language toggle
- app-init.js role labels use i18n
- currency.py service with convert() and format_currency()
- config.py adds DEFAULT_CURRENCY and EXCHANGE_RATE_USD_MXN settings
- config_bp.py adds GET/PUT /pos/api/config/currency endpoints
- config.html adds currency/exchange-rate section (Section 8)
- config.js adds loadCurrency/saveCurrency with localStorage sync
- pos.js fmt() reads pos_currency from localStorage for USD/MXN display
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add full fleet management (Feature 13): database migration for fleet_vehicles,
fleet_maintenance_schedules, and fleet_maintenance_logs tables; REST API blueprint
with CRUD, scheduling, logging, alerts, and stats endpoints; frontend with tabbed
UI (vehicles grid, maintenance schedules, history, overdue alerts); sidebar nav entry.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
