v0.1.0 — MVP release Complete implementation of the financial micro-cooperative backend: - Domain: Lobby, Participant, Product, User entities with full lifecycle - State Machine: 6 statuses, 9 transitions with explicit table - Services: Lobby lifecycle, leader weighted-random draw, payment with time-slot blind verification, resource distribution, reputation - HTTP API: Full REST endpoints for all operations + error mapping - Persistence: SQLite with 4 repositories, auto-schema migration - Tests: Unit tests with mocks, integration tests with SQLite, timeout and dispute flow coverage - Ops: Makefile, systemd unit, deployment guide