Recalculate league standings after EV simulation updates (#186)

* Force standings recalculation after EV simulation

After persisting updated EVs to participantExpectedValues, call
recalculateAffectedLeagues so that teamStandings.projectedPoints
(and all related standing fields) immediately reflect the new EV
rather than remaining stale until the next scoring event.

https://claude.ai/code/session_01S9Pk4wTSphANMhPWaURPTn

* Use recalculateStandings directly after EV simulation

Replaces recalculateAffectedLeagues (which carries Discord notification
and daily snapshot side effects) with a direct call to recalculateStandings
per affected fantasy season. This updates the cached projectedPoints in
teamStandings so the standings page stays in sync with the team page after
a simulation, without triggering unrelated side effects.

https://claude.ai/code/session_01S9Pk4wTSphANMhPWaURPTn

* Polish simulate route after code review

- Remove redundant db variable; use database() inline consistent with
  all other model calls in this file
- Parallelize standings recalculation with Promise.all
- Update file header comment to include the standings refresh step

https://claude.ai/code/session_01S9Pk4wTSphANMhPWaURPTn

---------

Co-authored-by: Claude <noreply@anthropic.com>

app/routes/admin.sports-seasons.$id.simulate.tsx

@@ -5,8 +5,9 @@
  *   1. Guards against concurrent runs via simulationStatus
  *   2. Runs the appropriate simulator based on the sport's simulatorType
  *   3. Persists updated EVs to participantExpectedValues (transactional)
- *   4. Takes an EV snapshot from simulation output (upsert for today's date)
+ *   4. Refreshes cached projectedPoints in teamStandings for all affected fantasy seasons
- *   5. Redirects back to the sports season admin page
+ *   5. Takes an EV snapshot from simulation output (upsert for today's date)
+ *   6. Redirects back to the sports season admin page
  */
 
 import { redirect } from "react-router";
@@ -17,6 +18,10 @@ import { batchUpsertParticipantEvSnapshots } from "~/models/ev-snapshot";
 import { findParticipantsBySportsSeasonId } from "~/models/participant";
 import { getSimulator, type SimulatorType } from "~/services/simulations/registry";
 import { calculateEV, type ScoringRules } from "~/services/ev-calculator";
+import { recalculateStandings } from "~/models/scoring-calculator";
+import { database } from "~/database/context";
+import * as schema from "~/database/schema";
+import { eq } from "drizzle-orm";
 
 // Default scoring rules — matches the season table defaults.
 // Per-league EV is recalculated from probabilities using league-specific rules in standings.
@@ -99,6 +104,12 @@ export async function action({ params }: Route.ActionArgs) {
     // Persist updated EVs (transactional)
     await batchUpsertParticipantEVs(evInputs);
 
+    // Refresh cached projectedPoints in teamStandings for all affected fantasy seasons
+    const seasonSports = await database().query.seasonSports.findMany({
+      where: eq(schema.seasonSports.sportsSeasonId, sportsSeasonId),
+    });
+    await Promise.all(seasonSports.map(({ seasonId }) => recalculateStandings(seasonId)));
+
     // Take EV snapshot from simulation output (not re-read from DB)
     const today = new Date().toISOString().slice(0, 10); // YYYY-MM-DD
     await batchUpsertParticipantEvSnapshots(