feat(my-bets): personal bet journal with CLV tracking

Adds a manual bet-tracking journal that turns the analyzer into an actual
bet tracker. Users record wagers; the journal auto-grades them when event
results land and computes per-bet Closing-Line-Value against the latest
pre-match snapshot — the strongest long-run indicator of betting skill.

Domain:
- PlacedBet entity (reuses Bet vocabulary for Scope/Type/Side/Value/Rate)
  with stake, placed-at, outcome, and notes. Derived GrossReturn / NetProfit.
- BetOutcome enum (Pending / Won / Lost / Void).
- BetOutcomeResolver: pure function grading any Match-scope bet against an
  EventResult. Handles 1X2, draws, handicap (incl. push), and totals.
  Period-scope bets stay manual since EventResult only carries full-time.

Application:
- IPlacedBetRepository abstraction.
- ClosingLineValueCalculator: pure CLV math (implied-probability delta) +
  snapshot-matching predicate by Scope/Type/Side/Value.
- BetJournalReport + BetJournalStats records.
- Four use cases: Record / ResolvePending / BuildReport / Delete.
- New ISnapshotRepository.GetLatestPreMatchAsync pushes the closing-line
  pick into a single SQLite query rather than materialising the 30-day
  window in memory per event.
- ROI turnover excludes Void stakes — pushes are not real turnover and
  including them would dilute the user's edge.

Infrastructure:
- PlacedBetEntity / Configuration / Repository / Mapping helpers.
- 20260516 migration adding the PlacedBets table with EventCode and
  Outcome indices. Intentionally NO foreign key to Events — the journal
  is user data and must survive snapshot-retention pruning. Covered by an
  explicit round-trip test.

UI:
- Pages/MyBets/Journal.razor: hero header, 4-card KPI strip (ROI / strike
  rate / avg CLV / net profit, tinted by tone), inline add-bet form with
  the same invariants as the Bet record, drill-down table with per-row
  outcome pills, CLV percentage-points column, P&L, notes underline, and
  inline-confirm delete. RU + EN i18n.
- Nav entry under Analysis.

Tests: +55 across Domain / Application / Infrastructure (resolver math
including handicap push and total push boundaries, PlacedBet invariants
and derived properties, CLV math + null-handling, four use cases under
NSubstitute, EF round-trip including survives-event-deletion). All 379
tests pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/Marathon.Application/Abstractions/IPlacedBetRepository.cs

@@ -0,0 +1,32 @@
+using Marathon.Application.Storage;
+using Marathon.Domain.Entities;
+using Marathon.Domain.Enums;
+using Marathon.Domain.ValueObjects;
+
+namespace Marathon.Application.Abstractions;
+
+/// <summary>
+/// Repository for <see cref="PlacedBet"/> domain entities — the user-tracked
+/// betting journal.
+/// </summary>
+public interface IPlacedBetRepository : IRepository<Guid, PlacedBet>
+{
+    /// <summary>
+    /// Bets matching <paramref name="outcome"/>. Used by the resolver use case
+    /// to scan only <see cref="BetOutcome.Pending"/> rows on each pass.
+    /// </summary>
+    Task<IReadOnlyList<PlacedBet>> ListByOutcomeAsync(BetOutcome outcome, CancellationToken ct = default);
+
+    /// <summary>
+    /// Bets whose <see cref="PlacedBet.PlacedAt"/> falls within
+    /// <paramref name="range"/>. Used by the journal page when the user filters
+    /// by date.
+    /// </summary>
+    Task<IReadOnlyList<PlacedBet>> ListByDateRangeAsync(DateRange range, CancellationToken ct = default);
+
+    /// <summary>
+    /// Every bet recorded against <paramref name="eventId"/>. Used by the event
+    /// detail page to show "you have N bets on this match".
+    /// </summary>
+    Task<IReadOnlyList<PlacedBet>> ListByEventAsync(EventId eventId, CancellationToken ct = default);
+}

src/Marathon.Application/Abstractions/ISnapshotRepository.cs

@@ -36,4 +36,19 @@ public interface ISnapshotRepository
     Task AddAsync(OddsSnapshot entity, CancellationToken ct = default);
 
     Task SaveChangesAsync(CancellationToken ct = default);
+
+    /// <summary>
+    /// Returns the latest pre-match snapshot for <paramref name="eventId"/> whose
+    /// <see cref="OddsSnapshot.CapturedAt"/> is at or before
+    /// <paramref name="atOrBefore"/>, or <c>null</c> if none exists. Used by the
+    /// bet-journal use case as the "closing line" reference for CLV.
+    /// </summary>
+    /// <remarks>
+    /// Pushes the ORDER BY + LIMIT 1 down to SQLite so we do not materialise
+    /// every snapshot in the 30-day pre-match window just to pick one.
+    /// </remarks>
+    Task<OddsSnapshot?> GetLatestPreMatchAsync(
+        EventId eventId,
+        DateTimeOffset atOrBefore,
+        CancellationToken ct = default);
 }

src/Marathon.Application/ApplicationModule.cs

@@ -32,6 +32,11 @@ public static class ApplicationModule
         services.AddScoped<DetectAnomaliesUseCase>();
         services.AddScoped<EvaluateAnomalyOutcomesUseCase>();
 
+        services.AddScoped<RecordPlacedBetUseCase>();
+        services.AddScoped<ResolvePendingBetsUseCase>();
+        services.AddScoped<BuildBetJournalReportUseCase>();
+        services.AddScoped<DeletePlacedBetUseCase>();
+
         return services;
     }
 }

src/Marathon.Application/Betting/BetJournalReport.cs

@@ -0,0 +1,92 @@
+using Marathon.Domain.Entities;
+using Marathon.Domain.Enums;
+
+namespace Marathon.Application.Betting;
+
+/// <summary>
+/// Aggregate report on the user's bet-tracking journal — totals, P&amp;L, and
+/// per-bet CLV. Consumed by the Journal page; built by
+/// <see cref="UseCases.BuildBetJournalReportUseCase"/>.
+/// </summary>
+/// <param name="Stats">Roll-up of stake / profit / hit rate / CLV across all bets in scope.</param>
+/// <param name="Bets">
+/// Every bet paired with its computed CLV (null when no closing snapshot was
+/// available). Ordered most-recent <see cref="PlacedBet.PlacedAt"/> first.
+/// </param>
+public sealed record BetJournalReport(
+    BetJournalStats Stats,
+    IReadOnlyList<BetJournalRow> Bets);
+
+/// <summary>
+/// One row in the journal — a domain <see cref="PlacedBet"/> plus the CLV
+/// computed against the closing pre-match snapshot.
+/// </summary>
+/// <param name="Bet">The domain bet exactly as persisted.</param>
+/// <param name="ClvProbabilityDelta">
+/// Closing-line value as an implied-probability delta in roughly [-1, 1].
+/// Positive means the user took a better price than the closing line; null
+/// when no matching bet existed in the closing snapshot.
+/// </param>
+public sealed record BetJournalRow(
+    PlacedBet Bet,
+    decimal? ClvProbabilityDelta);
+
+/// <summary>
+/// Aggregate statistics across a set of <see cref="PlacedBet"/>.
+/// All money values share the user's currency — the domain does not encode one.
+/// </summary>
+/// <param name="TotalBets">Every bet in scope, regardless of outcome.</param>
+/// <param name="PendingCount">Bets still awaiting settlement.</param>
+/// <param name="WonCount">Settled wins.</param>
+/// <param name="LostCount">Settled losses.</param>
+/// <param name="VoidCount">Settled pushes / void grades.</param>
+/// <param name="TotalStaked">
+/// Turnover that contributes to ROI: sum of <see cref="PlacedBet.Stake"/> across
+/// <b>Won and Lost</b> bets only. Void (push) and Pending bets are excluded — a
+/// returned stake is not real turnover and counting it would dilute ROI.
+/// </param>
+/// <param name="TotalReturned">
+/// Sum of <see cref="PlacedBet.GrossReturn"/> across the same Won + Lost subset
+/// that feeds <see cref="TotalStaked"/>.
+/// </param>
+/// <param name="NetProfit"><c>TotalReturned − TotalStaked</c>.</param>
+/// <param name="RoiPercent">
+/// <c>NetProfit / TotalStaked × 100</c>. Null when no bets have resolved yet.
+/// </param>
+/// <param name="StrikeRatePercent">
+/// <c>WonCount / (WonCount + LostCount) × 100</c> — excludes voids and pendings.
+/// Null when no settled win/loss exists yet.
+/// </param>
+/// <param name="AverageClvProbabilityDelta">
+/// Mean CLV across bets where CLV was computable. Null when no comparable
+/// closing snapshot was available for any bet.
+/// </param>
+public sealed record BetJournalStats(
+    int TotalBets,
+    int PendingCount,
+    int WonCount,
+    int LostCount,
+    int VoidCount,
+    decimal TotalStaked,
+    decimal TotalReturned,
+    decimal NetProfit,
+    decimal? RoiPercent,
+    decimal? StrikeRatePercent,
+    decimal? AverageClvProbabilityDelta)
+{
+    /// <summary>Convenience: WonCount + LostCount + VoidCount.</summary>
+    public int ResolvedCount => WonCount + LostCount + VoidCount;
+
+    public static BetJournalStats Empty { get; } = new(
+        TotalBets: 0,
+        PendingCount: 0,
+        WonCount: 0,
+        LostCount: 0,
+        VoidCount: 0,
+        TotalStaked: 0m,
+        TotalReturned: 0m,
+        NetProfit: 0m,
+        RoiPercent: null,
+        StrikeRatePercent: null,
+        AverageClvProbabilityDelta: null);
+}

src/Marathon.Application/Betting/ClosingLineValueCalculator.cs

@@ -0,0 +1,85 @@
+using Marathon.Domain.Entities;
+using Marathon.Domain.ValueObjects;
+
+namespace Marathon.Application.Betting;
+
+/// <summary>
+/// Pure helper that computes Closing Line Value (CLV) for a placed bet.
+/// </summary>
+/// <remarks>
+/// <para>
+/// CLV measures how much better (or worse) the rate the user took was compared
+/// with the bookmaker's last pre-match price on the same selection. It is the
+/// single best long-run indicator of betting skill — positive CLV correlates
+/// with positive expected value regardless of any individual bet's outcome.
+/// </para>
+/// <para>
+/// Formula (implied-probability delta):
+/// <list type="bullet">
+///   <item>Taken implied probability:   <c>p_t = 1 / takenRate</c></item>
+///   <item>Closing implied probability: <c>p_c = 1 / closeRate</c></item>
+///   <item><c>CLV  =  p_c − p_t</c></item>
+/// </list>
+/// Positive CLV means the closing price implied higher probability for the
+/// selection than the price the user took — i.e. the line moved in the user's
+/// favour after they placed the bet.
+/// </para>
+/// <para>
+/// Returns <c>null</c> when no matching bet (same Scope / Type / Side / Value)
+/// can be found in the closing snapshot — typically because the market closed
+/// before the bookmaker exposed a comparable line, or the snapshot store has
+/// gaps. UI consumers must distinguish "no data" from "0% CLV".
+/// </para>
+/// </remarks>
+public static class ClosingLineValueCalculator
+{
+    /// <summary>
+    /// Computes CLV (implied-probability delta) given the rate the user took
+    /// and the rate present in the closing pre-match snapshot for the same
+    /// selection. Both must be positive — invariants on <see cref="OddsRate"/>
+    /// already guarantee this for inputs sourced from the domain.
+    /// </summary>
+    public static decimal Compute(decimal takenRate, decimal closingRate)
+    {
+        if (takenRate <= 0m)
+            throw new ArgumentOutOfRangeException(nameof(takenRate), takenRate, "Must be positive.");
+        if (closingRate <= 0m)
+            throw new ArgumentOutOfRangeException(nameof(closingRate), closingRate, "Must be positive.");
+
+        var takenProb = 1m / takenRate;
+        var closingProb = 1m / closingRate;
+
+        // Round to 6 decimals — beyond that is noise from the round-trip.
+        return Math.Round(closingProb - takenProb, 6);
+    }
+
+    /// <summary>
+    /// Convenience overload: finds the matching <see cref="Bet"/> in
+    /// <paramref name="closingSnapshot"/> by Scope / Type / Side / Value, then
+    /// computes CLV against <paramref name="takenRate"/>. Returns <c>null</c>
+    /// when no comparable bet is present.
+    /// </summary>
+    public static decimal? TryCompute(
+        decimal takenRate,
+        Bet placedSelection,
+        OddsSnapshot? closingSnapshot)
+    {
+        ArgumentNullException.ThrowIfNull(placedSelection);
+        if (closingSnapshot is null) return null;
+
+        var match = closingSnapshot.Bets.FirstOrDefault(b =>
+            b.Scope.Equals(placedSelection.Scope) &&
+            b.Type == placedSelection.Type &&
+            b.Side == placedSelection.Side &&
+            NullableValuesEqual(b.Value, placedSelection.Value));
+
+        return match is null ? null : Compute(takenRate, match.Rate.Value);
+    }
+
+    private static bool NullableValuesEqual(OddsValue? a, OddsValue? b)
+    {
+        if (a is null && b is null) return true;
+        if (a is null || b is null) return false;
+        return a.Value == b.Value;
+    }
+}

src/Marathon.Application/UseCases/BuildBetJournalReportUseCase.cs

@@ -0,0 +1,172 @@
+using Marathon.Application.Abstractions;
+using Marathon.Application.Betting;
+using Marathon.Domain.Entities;
+using Marathon.Domain.Enums;
+using Microsoft.Extensions.Logging;
+using DomainEventId = Marathon.Domain.ValueObjects.EventId;
+
+namespace Marathon.Application.UseCases;
+
+/// <summary>
+/// Builds a <see cref="BetJournalReport"/>: every persisted bet paired with its
+/// Closing-Line-Value, plus aggregate <see cref="BetJournalStats"/>.
+/// </summary>
+/// <remarks>
+/// <para>
+/// Closing-line lookup: for each distinct event in the journal, this use case
+/// queries pre-match snapshots within a window that ends at the event's
+/// <see cref="Event.ScheduledAt"/> and picks the latest snapshot whose
+/// <see cref="OddsSnapshot.CapturedAt"/> is still before kickoff. That snapshot
+/// is the "close" for CLV purposes.
+/// </para>
+/// <para>
+/// If the snapshot store has nothing within the lookback window, the bet
+/// receives a null CLV. Stats then exclude it from the average.
+/// </para>
+/// </remarks>
+public sealed class BuildBetJournalReportUseCase
+{
+    private readonly IPlacedBetRepository _bets;
+    private readonly IEventRepository _events;
+    private readonly ISnapshotRepository _snapshots;
+    private readonly ILogger<BuildBetJournalReportUseCase> _logger;
+
+    public BuildBetJournalReportUseCase(
+        IPlacedBetRepository bets,
+        IEventRepository events,
+        ISnapshotRepository snapshots,
+        ILogger<BuildBetJournalReportUseCase> logger)
+    {
+        _bets = bets ?? throw new ArgumentNullException(nameof(bets));
+        _events = events ?? throw new ArgumentNullException(nameof(events));
+        _snapshots = snapshots ?? throw new ArgumentNullException(nameof(snapshots));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    public async Task<BetJournalReport> ExecuteAsync(CancellationToken ct = default)
+    {
+        var bets = await _bets.ListAsync(ct).ConfigureAwait(false);
+        if (bets.Count == 0)
+        {
+            _logger.LogInformation("BuildBetJournalReportUseCase: no bets — empty report");
+            return new BetJournalReport(BetJournalStats.Empty, Array.Empty<BetJournalRow>());
+        }
+
+        var distinctEventIds = bets.Select(b => b.EventId).Distinct().ToList();
+
+        // Resolve closing snapshot per event using a single-row repo call —
+        // pushes the ORDER BY / LIMIT 1 down to SQLite rather than materialising
+        // every snapshot in a 30-day window.
+        var closingByEvent = new Dictionary<DomainEventId, OddsSnapshot?>(distinctEventIds.Count);
+        foreach (var eventId in distinctEventIds)
+        {
+            ct.ThrowIfCancellationRequested();
+
+            var ev = await _events.GetAsync(eventId, ct).ConfigureAwait(false);
+            if (ev is null)
+            {
+                closingByEvent[eventId] = null;
+                continue;
+            }
+
+            var closing = await _snapshots
+                .GetLatestPreMatchAsync(eventId, ev.ScheduledAt, ct)
+                .ConfigureAwait(false);
+
+            closingByEvent[eventId] = closing;
+        }
+
+        var rows = new List<BetJournalRow>(bets.Count);
+        foreach (var bet in bets)
+        {
+            ct.ThrowIfCancellationRequested();
+            closingByEvent.TryGetValue(bet.EventId, out var closing);
+
+            var clv = ClosingLineValueCalculator.TryCompute(
+                takenRate: bet.Selection.Rate.Value,
+                placedSelection: bet.Selection,
+                closingSnapshot: closing);
+
+            rows.Add(new BetJournalRow(bet, clv));
+        }
+
+        rows.Sort((a, b) => b.Bet.PlacedAt.CompareTo(a.Bet.PlacedAt));
+
+        var stats = ComputeStats(rows);
+
+        _logger.LogInformation(
+            "BuildBetJournalReportUseCase: report built — {Total} bets, {Resolved} resolved, ROI={Roi:0.##}%",
+            stats.TotalBets, stats.ResolvedCount, stats.RoiPercent ?? 0m);
+
+        return new BetJournalReport(stats, rows);
+    }
+
+    private static BetJournalStats ComputeStats(IReadOnlyList<BetJournalRow> rows)
+    {
+        if (rows.Count == 0) return BetJournalStats.Empty;
+
+        var pending = 0;
+        var won = 0;
+        var lost = 0;
+        var voided = 0;
+        // Industry-standard ROI excludes pushes from turnover — staking on a Void
+        // bet returns the stake and is functionally a no-op, so counting it as
+        // turnover dilutes the ROI denominator and understates the user's edge.
+        // Only Won + Lost contribute to TotalStaked / TotalReturned.
+        var totalStaked = 0m;
+        var totalReturned = 0m;
+        decimal clvSum = 0m;
+        var clvCount = 0;
+
+        foreach (var row in rows)
+        {
+            switch (row.Bet.Outcome)
+            {
+                case BetOutcome.Pending: pending++; break;
+                case BetOutcome.Won: won++; break;
+                case BetOutcome.Lost: lost++; break;
+                case BetOutcome.Void: voided++; break;
+            }
+
+            if (row.Bet.Outcome is BetOutcome.Won or BetOutcome.Lost)
+            {
+                totalStaked += row.Bet.Stake;
+                totalReturned += row.Bet.GrossReturn ?? 0m;
+            }
+
+            if (row.ClvProbabilityDelta is { } clv)
+            {
+                clvSum += clv;
+                clvCount++;
+            }
+        }
+
+        var netProfit = totalReturned - totalStaked;
+        var winLoss = won + lost;
+
+        decimal? roi = totalStaked > 0m
+            ? Math.Round((netProfit / totalStaked) * 100m, 2)
+            : null;
+        decimal? strikeRate = winLoss > 0
+            ? Math.Round(((decimal)won / winLoss) * 100m, 2)
+            : null;
+        // CLV inputs are already 6-decimal-rounded by ClosingLineValueCalculator;
+        // round the mean only at the display boundary to avoid compounding bias.
+        decimal? avgClv = clvCount > 0
+            ? clvSum / clvCount
+            : null;
+
+        return new BetJournalStats(
+            TotalBets: rows.Count,
+            PendingCount: pending,
+            WonCount: won,
+            LostCount: lost,
+            VoidCount: voided,
+            TotalStaked: totalStaked,
+            TotalReturned: totalReturned,
+            NetProfit: netProfit,
+            RoiPercent: roi,
+            StrikeRatePercent: strikeRate,
+            AverageClvProbabilityDelta: avgClv);
+    }
+}

src/Marathon.Application/UseCases/DeletePlacedBetUseCase.cs

@@ -0,0 +1,29 @@
+using Marathon.Application.Abstractions;
+using Microsoft.Extensions.Logging;
+
+namespace Marathon.Application.UseCases;
+
+/// <summary>
+/// Removes a <see cref="Marathon.Domain.Entities.PlacedBet"/> from the journal
+/// by its identifier. Silent no-op when the id does not exist.
+/// </summary>
+public sealed class DeletePlacedBetUseCase
+{
+    private readonly IPlacedBetRepository _bets;
+    private readonly ILogger<DeletePlacedBetUseCase> _logger;
+
+    public DeletePlacedBetUseCase(
+        IPlacedBetRepository bets,
+        ILogger<DeletePlacedBetUseCase> logger)
+    {
+        _bets = bets ?? throw new ArgumentNullException(nameof(bets));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    public async Task ExecuteAsync(Guid betId, CancellationToken ct = default)
+    {
+        await _bets.DeleteAsync(betId, ct).ConfigureAwait(false);
+        await _bets.SaveChangesAsync(ct).ConfigureAwait(false);
+        _logger.LogInformation("DeletePlacedBetUseCase: removed bet {BetId}", betId);
+    }
+}

src/Marathon.Application/UseCases/RecordPlacedBetUseCase.cs

@@ -0,0 +1,90 @@
+using Marathon.Application.Abstractions;
+using Marathon.Domain.Entities;
+using Marathon.Domain.Enums;
+using Microsoft.Extensions.Logging;
+using DomainEventId = Marathon.Domain.ValueObjects.EventId;
+
+namespace Marathon.Application.UseCases;
+
+/// <summary>
+/// Records a new <see cref="PlacedBet"/> entered manually via the Journal UI.
+/// </summary>
+/// <remarks>
+/// <para>
+/// The use case validates that the referenced event exists, then persists the
+/// bet. If the event already has a final result the bet is graded on the spot
+/// via <see cref="Marathon.Domain.Betting.BetOutcomeResolver"/> — saves the
+/// user a round-trip to the resolver page when entering historical wagers.
+/// </para>
+/// </remarks>
+public sealed class RecordPlacedBetUseCase
+{
+    private readonly IPlacedBetRepository _bets;
+    private readonly IEventRepository _events;
+    private readonly IResultRepository _results;
+    private readonly ILogger<RecordPlacedBetUseCase> _logger;
+
+    public RecordPlacedBetUseCase(
+        IPlacedBetRepository bets,
+        IEventRepository events,
+        IResultRepository results,
+        ILogger<RecordPlacedBetUseCase> logger)
+    {
+        _bets = bets ?? throw new ArgumentNullException(nameof(bets));
+        _events = events ?? throw new ArgumentNullException(nameof(events));
+        _results = results ?? throw new ArgumentNullException(nameof(results));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    /// <summary>
+    /// Persists <paramref name="bet"/>. Returns the bet as stored — if the
+    /// event already has a result, the returned instance reflects the graded
+    /// <see cref="BetOutcome"/>.
+    /// </summary>
+    /// <exception cref="InvalidOperationException">
+    /// The bet references an unknown event. The journal does not allow free-form
+    /// event codes — wagers must be on events the scraper has captured so the
+    /// CLV calculator can compare against the closing snapshot.
+    /// </exception>
+    public async Task<PlacedBet> ExecuteAsync(PlacedBet bet, CancellationToken ct = default)
+    {
+        ArgumentNullException.ThrowIfNull(bet);
+
+        // Confirm the event exists in the local store.
+        var ev = await _events.GetAsync(bet.EventId, ct).ConfigureAwait(false);
+        if (ev is null)
+        {
+            throw new InvalidOperationException(
+                $"Cannot record a bet on unknown event '{bet.EventId.Value}'. " +
+                "The event must already be present in the scrape store.");
+        }
+
+        var toPersist = bet;
+
+        // Auto-grade if a result is already available.
+        if (bet.Outcome == BetOutcome.Pending)
+        {
+            var result = await _results.GetAsync(bet.EventId, ct).ConfigureAwait(false);
+            if (result is not null)
+            {
+                var graded = Marathon.Domain.Betting.BetOutcomeResolver.Resolve(bet.Selection, result);
+                if (graded is not null)
+                {
+                    toPersist = bet.WithOutcome(graded.Value);
+                    _logger.LogInformation(
+                        "RecordPlacedBetUseCase: bet {BetId} on event {EventId} auto-graded as {Outcome}",
+                        toPersist.Id, ((DomainEventId)toPersist.EventId).Value, graded.Value);
+                }
+            }
+        }
+
+        await _bets.AddAsync(toPersist, ct).ConfigureAwait(false);
+        await _bets.SaveChangesAsync(ct).ConfigureAwait(false);
+
+        _logger.LogInformation(
+            "RecordPlacedBetUseCase: persisted bet {BetId} on event {EventId} stake={Stake} rate={Rate}",
+            toPersist.Id, ((DomainEventId)toPersist.EventId).Value, toPersist.Stake, toPersist.Selection.Rate.Value);
+
+        return toPersist;
+    }
+}

src/Marathon.Application/UseCases/ResolvePendingBetsUseCase.cs

@@ -0,0 +1,84 @@
+using Marathon.Application.Abstractions;
+using Marathon.Domain.Betting;
+using Marathon.Domain.Entities;
+using Marathon.Domain.Enums;
+using Microsoft.Extensions.Logging;
+using DomainEventId = Marathon.Domain.ValueObjects.EventId;
+
+namespace Marathon.Application.UseCases;
+
+/// <summary>
+/// Sweeps the journal for <see cref="BetOutcome.Pending"/> bets whose events
+/// have been graded, and updates them in bulk via
+/// <see cref="BetOutcomeResolver"/>.
+/// </summary>
+/// <remarks>
+/// Called on demand from the Journal page's "Resolve pending" button. The
+/// design is idempotent — bets that cannot be auto-graded (period-scope, or
+/// no result yet) are left untouched and surface again on the next pass.
+/// </remarks>
+public sealed class ResolvePendingBetsUseCase
+{
+    private readonly IPlacedBetRepository _bets;
+    private readonly IResultRepository _results;
+    private readonly ILogger<ResolvePendingBetsUseCase> _logger;
+
+    public ResolvePendingBetsUseCase(
+        IPlacedBetRepository bets,
+        IResultRepository results,
+        ILogger<ResolvePendingBetsUseCase> logger)
+    {
+        _bets = bets ?? throw new ArgumentNullException(nameof(bets));
+        _results = results ?? throw new ArgumentNullException(nameof(results));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    /// <summary>
+    /// Returns the number of bets that were transitioned out of Pending in this pass.
+    /// </summary>
+    public async Task<int> ExecuteAsync(CancellationToken ct = default)
+    {
+        var pending = await _bets.ListByOutcomeAsync(BetOutcome.Pending, ct).ConfigureAwait(false);
+        if (pending.Count == 0)
+        {
+            _logger.LogInformation("ResolvePendingBetsUseCase: no pending bets");
+            return 0;
+        }
+
+        // Cache results per event so we do not re-query for each bet on the same event.
+        var resultCache = new Dictionary<DomainEventId, EventResult?>();
+        var resolvedCount = 0;
+
+        foreach (var bet in pending)
+        {
+            ct.ThrowIfCancellationRequested();
+
+            if (!resultCache.TryGetValue(bet.EventId, out var result))
+            {
+                result = await _results.GetAsync(bet.EventId, ct).ConfigureAwait(false);
+                resultCache[bet.EventId] = result;
+            }
+
+            if (result is null) continue;
+
+            var graded = BetOutcomeResolver.Resolve(bet.Selection, result);
+            if (graded is null) continue;
+
+            var updated = bet.WithOutcome(graded.Value);
+            await _bets.UpdateAsync(updated, ct).ConfigureAwait(false);
+            resolvedCount++;
+        }
+
+        // Save before logging — if the batch fails, an exception bubbles out and
+        // the success-count log is never emitted; we never report a graded count
+        // that was rolled back.
+        if (resolvedCount > 0)
+            await _bets.SaveChangesAsync(ct).ConfigureAwait(false);
+
+        _logger.LogInformation(
+            "ResolvePendingBetsUseCase: graded {Resolved} of {Pending} pending bets",
+            resolvedCount, pending.Count);
+
+        return resolvedCount;
+    }
+}