feat: Complete PL24 architecture overhaul with email & auth improvements
## PL24 Integration Rewrite
- Add dual architecture support: P5 Modern (JSON API) + Legacy (HTML scraping)
- New services: factory, session, fetch, html-parser, legacy-scraper
- Add NHTSA WMI data for accurate brand detection
- Brand-specific parsers for VW, Mercedes, BMW, Audi, Porsche, Ford, etc.
- Add 254 schema images for parts diagrams
## Authentication & Security
- Add PasswordResetToken database model with proper expiration
- Implement dual persistence (Redis + DB) for password reset tokens
- Add email enumeration protection
## Email Module
- New EmailService for password reset emails
- Configurable SMTP settings
## Database Schema
- Add Vehicle fields: equipment, interiorCode, productionDate, salesType
- Add Part.hotspotId for schema hotspot linking
- Add SchemaPic.hotspots JSON field
- Add VehicleCategory.subGroupsJson for subgroup data
## Frontend
- Improve auth pages (login, register, forgot-password)
- Enhance vehicle detail and categories pages
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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