feat(FASE-4A): Complete vertical modules for construction
- MAI-018 Bidding module: entities, services, controllers, DTOs
- Opportunity, Tender, Proposal, Vendor management
- Bid calendar, documents, analytics
- Earned Value Management: Curva S, SPI/CPI reports
- earned-value.service.ts with EV, PV, AC calculations
- earned-value.controller.ts with 9 endpoints
- DTOs for modules: assets, contracts, documents, purchase, quality
- 28 new DTO files with class-validator decorators
- Storage module: service and controller implementation
- Multi-provider support (local, S3, GCS, Azure)
- File management, upload/download URLs
- Multiple entity and service fixes
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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