Insider-Follow feed: auto-watchlist possible-insider wallets + new-trade alerts
Makes the existing possible_insider trait actionable:
- New AlertType.InsiderActivity (severity 4).
- AlertService.EvaluateInsiderWatchAsync (run from EvaluateAlertsAsync every
15 min): auto-adds every possible_insider wallet to the watchlist, then fires
one InsiderActivity alert per new trade one of them places. These wallets
trade rarely, so a single new trade is the strongest copy signal.
- Dedup + no history spam via WatchlistEntry.LastInsiderAlertAt (migration
AddWatchlistLastInsiderAlertAt); a freshly auto-added wallet is baselined at
AddedAt so backfilled trades never alert.
- Repo support: ITraderRepository.GetByTraitAsync, IWatchlistRepository.UpdateAsync.
- UI: distinct 👁 icon for insider alerts (💰 for large positions).
- Tests: auto-add-without-history-alert, alert-on-new-trade-with-dedup.
Migration auto-applies on startup (DependencyInjection.MigrateAsync).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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