Fix reprocess bracket to score mirror windows like the primary

Reprocessing a tennis (qualifying) major recomputed the primary window's
QP correctly (R16 players = 1.5, the average of the 9th–16th values) but
left mirror/sibling windows showing 2 QP. Two defects:

1. The mirror fan-out ran through fanOutMajorIfPrimary, which swallows
   every error and returns void, so reprocess reported a green "success"
   even when mirrors were never re-scored. The reprocess qualifying path
   now calls syncMajorFromPrimaryEvent directly and folds the SyncReport
   (windows synced / failed) into the response, surfacing failures instead
   of hiding them.

2. Mirror windows split QP by counting canonical tournament_results rows
   at each placement, which only equals the round's structural tie span
   when placements are final. Mid-tournament, players floored at a tier
   make the row-count diverge from the tier size, so mirrors split
   differently than the primary. syncMajorFromPrimaryEvent now derives the
   structural span (R16 = 8, QF = 4, SF = 2, Final = 1) from the primary
   bracket via deriveBracketQualifyingStates and merges it over the
   canonical counts, so every window splits identically to the primary at
   every stage. Golf and CS2 Swiss-exit placements keep their canonical
   count via the merge.

Adds a fan-out test covering an R16-in-progress bracket where only 4 rows
sit at placement 9: the mirror is scored with the structural span (8), not
the live count (4).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013UkZVYgLmquWV2xDn349T2

app/routes/admin.sports-seasons.$id.events.$eventId.bracket.server.ts

@@ -65,7 +65,7 @@ import { database } from "~/database/context";
 import * as schema from "~/database/schema";
 import { eq } from "drizzle-orm";
 import { maybeResolveCompletedBracktForSportsSeason } from "~/services/brackt.server";
-import { fanOutMajorIfPrimary } from "~/services/sync-tournament-results";
+import { fanOutMajorIfPrimary, syncMajorFromPrimaryEvent } from "~/services/sync-tournament-results";
 import { syncTennisDraw, previewTennisDraw } from "~/services/match-sync";
 import { articleTitleFromInput } from "~/services/match-sync/wikipedia-tennis";
 
@@ -763,11 +763,28 @@ export async function action({ request, params }: Route.ActionArgs) {
           // skipDiscord: reprocess is a data-correction tool, not a result announcement.
           await recalculateAffectedLeagues(event.sportsSeasonId, db, { skipDiscord: true });
         }
-        // Re-propagate corrected QP to sibling windows (data-correction; not final).
+        // Re-propagate corrected QP to sibling/mirror windows (data-correction; not
-        await fanOutMajorIfPrimary(event, { markComplete: false });
+        // final). Call syncMajorFromPrimaryEvent directly rather than the
-        return {
+        // swallow-and-log fanOutMajorIfPrimary so the admin actually sees whether the
-          success: `Reprocessed qualifying bracket: cleared stale fantasy points and recomputed QP (${completed.length} completed match(es)).`,
+        // mirrors were re-scored — a silent failure here is exactly how mirrors got
-        };
+        // left showing stale QP behind a green "success".
+        const baseMessage = `Reprocessed qualifying bracket: cleared stale fantasy points and recomputed QP (${completed.length} completed match(es)).`;
+        if (event.isPrimary && event.tournamentId) {
+          try {
+            const report = await syncMajorFromPrimaryEvent(event.id, { markComplete: false });
+            let fanout = ` Synced ${report.windowsSynced} mirror window(s).`;
+            if (report.windowsFailed > 0) {
+              const reasons = report.failures.map((f) => f.error).join("; ");
+              fanout = ` Synced ${report.windowsSynced} mirror window(s); ${report.windowsFailed} failed: ${reasons}`;
+            }
+            return { success: `${baseMessage}${fanout}` };
+          } catch (error) {
+            return {
+              error: `Primary window recomputed, but mirror fan-out failed (mirror windows may be stale): ${error instanceof Error ? error.message : String(error)}`,
+            };
+          }
+        }
+        return { success: `${baseMessage} No mirror windows to sync.` };
       }
 
       if (completed.length === 0) {

app/services/__tests__/sync-tournament-results.test.ts

@@ -5,20 +5,22 @@ vi.mock("~/database/context", () => ({
   database: vi.fn(),
 }));
 
-vi.mock("~/models/scoring-calculator", () => ({
+vi.mock("~/models/scoring-calculator", async () => {
-  processQualifyingEvent: vi.fn(),
+  // Keep the real implementations of the PURE helpers so the tie-count map handed
-  recalculateAffectedLeagues: vi.fn(),
+  // to processQualifyingEvent reflects the mock canonical results AND the bracket's
-  // Pure helper — keep the real implementation so the tie-count map handed to
+  // structural tie span (deriveBracketQualifyingStates / getRoundConfig). Only the
-  // processQualifyingEvent reflects the mock canonical results.
+  // DB-touching orchestrators are stubbed.
-  buildTieCountByPlacement: (results: Array<{ placement: number | null }>) => {
+  const actual = await vi.importActual<typeof import("~/models/scoring-calculator")>(
-    const map = new Map<number, number>();
+    "~/models/scoring-calculator"
-    for (const r of results) {
+  );
-      if (r.placement === null) continue;
+  return {
-      map.set(r.placement, (map.get(r.placement) ?? 0) + 1);
+    processQualifyingEvent: vi.fn(),
-    }
+    recalculateAffectedLeagues: vi.fn(),
-    return map;
+    buildTieCountByPlacement: actual.buildTieCountByPlacement,
-  },
+    deriveBracketQualifyingStates: actual.deriveBracketQualifyingStates,
-}));
+    getRoundConfig: actual.getRoundConfig,
+  };
+});
 
 vi.mock("~/models/scoring-event", () => ({
   completeScoringEvent: vi.fn(),
@@ -99,11 +101,21 @@ interface FakeEventResult {
 //   - event_results
 // ---------------------------------------------------------------------------
 
+interface FakePlayoffMatch {
+  scoringEventId: string;
+  round: string;
+  winnerId: string | null;
+  loserId: string | null;
+  participant1Id: string | null;
+  participant2Id: string | null;
+}
+
 interface FakeDbState {
   tournamentResults: FakeTournamentResult[];
   scoringEvents: FakeScoringEvent[];
   seasonParticipants: FakeSeasonParticipant[];
   eventResults: FakeEventResult[];
+  playoffMatches: FakePlayoffMatch[];
 }
 
 /**
@@ -151,6 +163,8 @@ function makeFakeDb(state: FakeDbState) {
         return state.seasonParticipants;
       case "event_results":
         return state.eventResults;
+      case "playoff_matches":
+        return state.playoffMatches;
       default:
         throw new Error(`Unknown table in fake db: ${name}`);
     }
@@ -291,6 +305,7 @@ function seedBasicState(overrides: Partial<FakeDbState> = {}): FakeDbState {
     scoringEvents: [],
     seasonParticipants: [],
     eventResults: [],
+    playoffMatches: [],
     ...overrides,
   };
 }
@@ -836,6 +851,139 @@ describe("syncMajorFromPrimaryEvent", () => {
     expect(completeScoringEvent).not.toHaveBeenCalled();
   });
 
+  it("splits mirror QP by the bracket's structural tie span, not the canonical row count (R16 in progress)", async () => {
+    // Tennis R16 in progress: two R16 matches are decided (losers cp-L1/cp-L2 land
+    // final at 9th) and two players (cp-F1/cp-F2) won their R32 match and are still
+    // "floored" at the R16 tier (also placement 9). So only FOUR players sit at
+    // placement 9 right now — the canonical row-count is 4, which would wrongly
+    // split 9th–16th four ways (→ 2 QP). The R16 tier structurally spans 8 slots,
+    // so every window must split (2+2+2+2+1+1+1+1)/8 = 1.5. This asserts the map
+    // handed to each mirror's processQualifyingEvent carries the structural span (8),
+    // not the live count (4).
+    const state = seedBasicState({
+      scoringEvents: [
+        {
+          id: "ev-PRIMARY",
+          sportsSeasonId: "ss-P",
+          tournamentId: "t-1",
+          name: "Wimbledon",
+        },
+        {
+          id: "ev-MIRROR",
+          sportsSeasonId: "ss-M",
+          tournamentId: "t-1",
+          name: "Wimbledon",
+        },
+      ],
+      seasonParticipants: [
+        { id: "sp-ML1", sportsSeasonId: "ss-M", participantId: "cp-L1", name: "L1" },
+        { id: "sp-MF1", sportsSeasonId: "ss-M", participantId: "cp-F1", name: "F1" },
+      ],
+      // Primary bracket state. R32 wins establish the "floored at R16" players;
+      // decided R16 matches establish the final 9th-place losers and the QF-floored
+      // winners (placement 5).
+      playoffMatches: [
+        {
+          scoringEventId: "ev-PRIMARY",
+          round: "Round of 32",
+          winnerId: "cp-F1",
+          loserId: "cp-out1",
+          participant1Id: "cp-F1",
+          participant2Id: "cp-out1",
+        },
+        {
+          scoringEventId: "ev-PRIMARY",
+          round: "Round of 32",
+          winnerId: "cp-F2",
+          loserId: "cp-out2",
+          participant1Id: "cp-F2",
+          participant2Id: "cp-out2",
+        },
+        {
+          scoringEventId: "ev-PRIMARY",
+          round: "Round of 16",
+          winnerId: "cp-W1",
+          loserId: "cp-L1",
+          participant1Id: "cp-W1",
+          participant2Id: "cp-L1",
+        },
+        {
+          scoringEventId: "ev-PRIMARY",
+          round: "Round of 16",
+          winnerId: "cp-W2",
+          loserId: "cp-L2",
+          participant1Id: "cp-W2",
+          participant2Id: "cp-L2",
+        },
+      ],
+    });
+    const db = makeFakeDb(state);
+    vi.mocked(database).mockReturnValue(db as never);
+    vi.mocked(processQualifyingEvent).mockResolvedValue(undefined);
+    vi.mocked(completeScoringEvent).mockResolvedValue(undefined as never);
+    vi.mocked(recalculateAffectedLeagues).mockResolvedValue(undefined);
+
+    vi.mocked(getScoringEventById).mockResolvedValue({
+      id: "ev-PRIMARY",
+      sportsSeasonId: "ss-P",
+      tournamentId: "t-1",
+      name: "Wimbledon",
+      bracketTemplateId: "tennis_128",
+    } as never);
+
+    // Primary window's derived results (what processQualifyingBracketEvent wrote):
+    // four players at placement 9 (2 final losers + 2 floored), two at placement 5.
+    vi.mocked(getEventResults).mockResolvedValue(
+      [
+        ["sp-PL1", "cp-L1", 9],
+        ["sp-PL2", "cp-L2", 9],
+        ["sp-PF1", "cp-F1", 9],
+        ["sp-PF2", "cp-F2", 9],
+        ["sp-PW1", "cp-W1", 5],
+        ["sp-PW2", "cp-W2", 5],
+      ].map(([seasonParticipantId, participantId, placement]) => ({
+        placement,
+        rawScore: null,
+        notParticipating: false,
+        seasonParticipantId,
+        seasonParticipant: { participantId },
+      })) as never
+    );
+
+    vi.mocked(upsertTournamentResult).mockImplementation(
+      async (data: {
+        tournamentId: string;
+        participantId: string;
+        placement?: number | null;
+        rawScore?: string | null;
+      }) => {
+        state.tournamentResults.push({
+          tournamentId: data.tournamentId,
+          participantId: data.participantId,
+          placement: data.placement ?? null,
+          rawScore: data.rawScore ?? null,
+        });
+        return data as never;
+      }
+    );
+
+    await syncMajorFromPrimaryEvent("ev-PRIMARY", { markComplete: false });
+
+    // Sanity: only four canonical rows sit at placement 9 (the live count is 4).
+    expect(
+      state.tournamentResults.filter((r) => r.placement === 9)
+    ).toHaveLength(4);
+
+    // The mirror window was scored with the STRUCTURAL span, not the row count.
+    const mirrorCall = vi
+      .mocked(processQualifyingEvent)
+      .mock.calls.find((c) => c[0] === "ev-MIRROR");
+    expect(mirrorCall).toBeDefined();
+    const tieMap = mirrorCall![2]!.canonicalTieCountByPlacement as Map<number, number>;
+    expect(tieMap.get(9)).toBe(8); // R16 tier spans 8, not the 4 rows currently there
+    expect(tieMap.get(5)).toBe(4); // QF tier spans 4
+  });
+
   it("throws when the primary event is not linked to a tournament", async () => {
     const db = makeFakeDb(seedBasicState());
     vi.mocked(database).mockReturnValue(db as never);

app/services/sync-tournament-results.ts

@@ -5,10 +5,13 @@ import {
   processQualifyingEvent,
   recalculateAffectedLeagues,
   buildTieCountByPlacement,
+  deriveBracketQualifyingStates,
+  getRoundConfig,
 } from "~/models/scoring-calculator";
 import { completeScoringEvent, getScoringEventById } from "~/models/scoring-event";
 import { getEventResults } from "~/models/event-result";
 import { upsertTournamentResult } from "~/models/tournament-result";
+import { BRACKET_TEMPLATES } from "~/lib/bracket-templates";
 import { logger } from "~/lib/logger";
 
 export interface SyncReport {
@@ -43,6 +46,20 @@ export interface SyncOptions {
    * (e.g. a mis-split 2 → correct 1.5), which would otherwise re-ping every league.
    */
   skipNotifications?: boolean;
+  /**
+   * Pre-computed tie span (placement → tieCount) to split QP across each tied
+   * group, overriding the row-count derived from canonical tournament_results.
+   *
+   * For bracket majors (tennis, CS2) the tie span is a STRUCTURAL property of the
+   * round — R16 spans 8 slots (9th–16th), QF 4, SF 2, Final 1 — not the live count
+   * of players currently sitting at a placement. Mid-tournament, players "floored"
+   * at a tier make the canonical row-count diverge from the structural span, so a
+   * mirror window would split differently than the primary (e.g. R16 losers at
+   * 2 QP instead of 1.5). syncMajorFromPrimaryEvent derives this map from the
+   * primary bracket so every window splits identically to the primary at every
+   * stage. Omitted for golf-style majors (no bracket) → canonical row-count is used.
+   */
+  tieCountByPlacement?: Map<number, number>;
 }
 
 /**
@@ -65,7 +82,12 @@ export async function syncTournamentResults(
   options: SyncOptions = {}
 ): Promise<SyncReport> {
   const db = database();
-  const { markComplete = true, skipEventId, skipNotifications = false } = options;
+  const {
+    markComplete = true,
+    skipEventId,
+    skipNotifications = false,
+    tieCountByPlacement,
+  } = options;
 
   const report: SyncReport = {
     tournamentId,
@@ -80,10 +102,16 @@ export async function syncTournamentResults(
     .from(schema.tournamentResults)
     .where(eq(schema.tournamentResults.tournamentId, tournamentId));
 
-  // The full-field tie span (placement → count) is a property of the whole
+  // The tie span (placement → count) used to split QP across a tied group. Default
-  // tournament, so compute it once here and hand it to every window's
+  // is the count of canonical rows at each placement (a whole-tournament property,
-  // processQualifyingEvent instead of re-querying canonical results per window.
+  // computed once here). For bracket majors the caller also passes the STRUCTURAL
+  // span from the primary bracket (R16 = 8, QF = 4, …); merge it OVER the counts so
+  // bracket placements split like the primary even mid-tournament while any
+  // non-bracket placements (e.g. CS2 Swiss exits, golf) keep their canonical count.
   const canonicalTieCountByPlacement = buildTieCountByPlacement(canonicalResults);
+  const effectiveTieCountByPlacement = tieCountByPlacement
+    ? new Map([...canonicalTieCountByPlacement, ...tieCountByPlacement])
+    : canonicalTieCountByPlacement;
 
   // 2. Load every scoring_event that points at this tournament.
   const allLinkedEvents = await db
@@ -191,7 +219,7 @@ export async function syncTournamentResults(
         // 3d. Delegate to scoring engine inside the same transaction.
         await processQualifyingEvent(ev.id, tx, {
           skipNotifications,
-          canonicalTieCountByPlacement,
+          canonicalTieCountByPlacement: effectiveTieCountByPlacement,
         });
 
         // 3e. Mark the window event complete (final-results sync only). This is
@@ -333,13 +361,70 @@ export async function syncMajorFromPrimaryEvent(
     `[syncMajorFromPrimaryEvent] promoted ${promotedCanonicalIds.size} result(s) from primary ${primaryEventId} to tournament ${tournamentId}; removed ${staleIds.length} stale`
   );
 
+  // For a bracket major, split each placement's QP by the round's STRUCTURAL tie
+  // span (the same span the primary used via processQualifyingBracketEvent), not by
+  // the live count of canonical rows at that placement. Mid-tournament, players
+  // floored at a tier inflate the row-count and would make mirror windows split
+  // differently than the primary (e.g. R16 losers → 2 QP instead of 1.5). Derived
+  // here so every fan-out caller (reprocess, live rounds, finalize) stays consistent.
+  const tieCountByPlacement = await deriveStructuralTieSpanForBracket(
+    primaryEvent,
+    db
+  );
+
   return syncTournamentResults(tournamentId, {
     markComplete,
     skipEventId: primaryEventId,
     skipNotifications,
+    tieCountByPlacement,
   });
 }
 
+/**
+ * Build a placement → structural tie-span map for a bracket major's primary
+ * window, mirroring the spans processQualifyingBracketEvent assigns (R16 losers
+ * span 8 slots, QF 4, SF 2, Final 1). Returns undefined for a primary with no
+ * bracket template or no matches (e.g. golf), so the fan-out falls back to counting
+ * canonical rows exactly as before.
+ *
+ * The span for a given placement is consistent across the bracket (every R16-tier
+ * state carries tieCount 8, whether the player is a final loser or still floored),
+ * so collapsing the per-participant states into a placement → tieCount map is safe.
+ */
+async function deriveStructuralTieSpanForBracket(
+  primaryEvent: { id: string; bracketTemplateId: string | null },
+  db: ReturnType<typeof database>
+): Promise<Map<number, number> | undefined> {
+  if (!primaryEvent.bracketTemplateId) return undefined;
+  const template = BRACKET_TEMPLATES[primaryEvent.bracketTemplateId];
+  if (!template) return undefined;
+
+  const matches = await db
+    .select()
+    .from(schema.playoffMatches)
+    .where(eq(schema.playoffMatches.scoringEventId, primaryEvent.id));
+  if (matches.length === 0) return undefined;
+
+  const states = deriveBracketQualifyingStates(
+    matches.map((m) => ({
+      round: m.round,
+      winnerId: m.winnerId,
+      loserId: m.loserId,
+      participant1Id: m.participant1Id,
+      participant2Id: m.participant2Id,
+    })),
+    template.rounds,
+    (round) => getRoundConfig(round, primaryEvent.bracketTemplateId)
+  );
+  if (states.size === 0) return undefined;
+
+  const map = new Map<number, number>();
+  for (const { placement, tieCount } of states.values()) {
+    map.set(placement, tieCount);
+  }
+  return map;
+}
+
 /**
  * Convenience guard for route handlers: fan out a just-scored bracket/stage event
  * to its sibling windows ONLY when it's the designated primary of a shared