Flow: licence progression (Glide-Time flight school)

The hardest demo: legal training progression run on commerce infrastructure. State is derived from validated evidence, never hand-set.

flowchart TD
    A[Student buys Grundkurs\ndeposit or instalments allowed] --> B[Theory day\nonce only, at a managed venue]
    A --> C["Uebungshang training days\nweather gated, capacity capped"]
    C -->|instructor validates\nattendance per day| D{3 validated days?}
    D -->|yes| E[Hoehenfluege unlocked]
    E --> F["Flights logged automatically\nGrundkurs flights count"]
    F --> G{40 Hoehenfluege\n+ theory done?}
    G -->|yes| H[A licence test signup\ndecoupled from qualification]
    H --> I[A licence held]
    I --> J["XC flight >= 10 km\nauto checked from uploaded IGC file"]
    B --> G
    J --> K[B licence]
    C -.->|wind says no| L[Day moves gracefully,\neveryone informed]
    A -.-> M[Waiting lists when full\nservice reminders later]