Add complete documentation suite for LocalGreenChain
- Add guides: quick-start, installation, configuration, grower, consumer, transport, vertical-farm
- Add API references: REST, demand, vertical-farming
- Add concepts: blockchain, seasonal-planning, carbon-footprint
- Add architecture: data-flow, transport-tracking
- Add vertical-farming: environmental-control, automation, integration
- Add examples: seed-to-harvest, demand-driven-planting, vertical-farm-setup
Completes Agent_5 documentation tasks from AGENT_REPORT.md