Three fixes surfaced when launching the WPF host for the first time:
1. App.xaml.cs — call MarathonDbContextInitializer.InitializeAsync()
between Host.Build() and Host.Start() so EF migrations + WAL pragma
are applied BEFORE BackgroundServices race to query the DB. Without
this, all pollers crashed on 'no such table: Events'.
2. wwwroot/index.html — added <script src='https://cdn.plot.ly/plotly-2.35.2.min.js'>
before blazor.webview.js. Phase 6 reviewer flagged this for Phase 9,
but charts are unrenderable without it; better to ship now.
3. Migrations/20260505000000_InitialCreate.cs — added [DbContext] and
[Migration('20260505000000_InitialCreate')] attributes. Phase 2's
hand-written migration was missing both, so EF saw 'no migrations to
apply' even on a fresh DB. With the attributes, the migration runs
on first launch and creates all tables (Events, Snapshots, Bets,
EventResults, Anomalies, Sports, Leagues).
Verified: clean DB → migration applied → all 7 tables created → pollers
run with empty results (no data yet — UpcomingEventsPoller fires every 6h
by default; first scrape will populate the DB).
alexei.dolgolyov
85bc99cac5