Postgres schema and SQLx

Analyzer requires Postgres at startup — pool fails fast if DB is down.

PgPoolOptions::new()
    .max_connections(5)
    .connect(&database_url)
    .await?;

PostgresSchemaDiagram — infra/docker/init-db.sql.

Idempotent write

INSERT INTO team_events (…) VALUES (…)
ON CONFLICT (id) DO UPDATE SET …

Enables safe Kafka replay without duplicate primary keys.

Teach-back prompt

Why exit the process if Postgres is unavailable?