[T049-T055 + UX] Phase 5 documents + single-model + responder/UX fixes

[T044-T048 + data] Phase 4 recommendations + real UNHCR stats integration

[T035-T043] Phase 3 — situation assessment (reasoning stream + real tools)

[T030-T034] Phase 2 — intake screen + language selection + theming

[T001-T016] Phase 0 — project setup: agent loop, state machine, Gradio skeleton