Merge branch 'dev' into feat/ab/sh-329-account-owner

SH-328: expose per-person permission overrides

Api.SeaHavenIndustries.Tests/DashboardServiceTests.cs

@@ -1,7 +1,12 @@
+using System.Security.Claims;
 using Data.SeaHavenIndustries;
 using FluentAssertions;
+using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using SeaHaven.DataServices.Implementation;
+using SeaHaven.Services.Exceptions;
+using SeaHaven.Services.DTOs;
+using SeaHaven.Services.Helpers;
 using SeaHaven.Services.Implementation;
 using Xunit;
 
@@ -17,33 +22,647 @@ public class DashboardServiceTests
         return new ApplicationDbContext(options);
     }
 
-    private static DashboardService NewService(ApplicationDbContext ctx) =>
-        new(new DashboardDataService(ctx));
+    private static DashboardService NewService(ApplicationDbContext ctx)
+    {
+        var resolver = new WorkOrderAccountResolver(
+            new AccountDataService(ctx),
+            new LocationDataService(ctx));
+        return new DashboardService(new DashboardDataService(ctx), resolver);
+    }
 
-    private static WorkOrder Wo(string? status, bool? isTemplate = false, string? assignTo = null) =>
-        new() { Status = status, istemplate = isTemplate, AssignTo = assignTo };
+    private static ClaimsPrincipal AccountUser(
+        int accountId,
+        string userId = "dispatcher-1",
+        string role = "Admin")
+    {
+        var claims = new[]
+        {
+            new Claim(SeaHavenClaimTypes.AccountId, accountId.ToString()),
+            new Claim(ClaimTypes.NameIdentifier, userId),
+            new Claim(ClaimTypes.Role, role)
+        };
+        return new ClaimsPrincipal(new ClaimsIdentity(claims, "test"));
+    }
+
+    private static ClaimsPrincipal OrgWideUser()
+    {
+        var claims = new[]
+        {
+            new Claim(SeaHavenClaimTypes.OrgScope, SeaHavenClaimTypes.OrgScopeAll),
+            new Claim(ClaimTypes.Role, "Admin")
+        };
+        return new ClaimsPrincipal(new ClaimsIdentity(claims, "test"));
+    }
 
     [Fact]
     public async Task GetStatsAsync_CountsByStatusExcludingTemplates()
     {
         using var ctx = NewContext();
         ctx.workOrders.AddRange(
-            Wo("Open", isTemplate: false),
-            Wo("Open", isTemplate: false, assignTo: "u1"),
-            Wo("In Progress"),
-            Wo("On Hold"),
-            Wo("Done"),
-            Wo("Done"),
-            Wo("Open", isTemplate: true),
-            Wo("Cancelled", isTemplate: false)
+            new WorkOrder { AccountId = 1, Status = "Open", istemplate = false },
+            new WorkOrder { AccountId = 1, Status = "Open", istemplate = false, AssignTo = "u1" },
+            new WorkOrder { AccountId = 1, Status = "In Progress" },
+            new WorkOrder { AccountId = 1, Status = "On Hold" },
+            new WorkOrder { AccountId = 1, Status = "Done" },
+            new WorkOrder { AccountId = 1, Status = "Done" },
+            new WorkOrder { AccountId = 1, Status = "Open", istemplate = true },
+            new WorkOrder { AccountId = 1, Status = "Cancelled" },
+            new WorkOrder { AccountId = 2, Status = "Open" },
+            new WorkOrder { Status = "Open" }
         );
         ctx.SaveChanges();
 
-        var stats = await NewService(ctx).GetStatsAsync(CancellationToken.None);
+        var stats = await NewService(ctx).GetStatsAsync(
+            AccountUser(1), new DashboardStatsQueryDTO(), CancellationToken.None);
 
         stats.Total.Should().Be(7);
         stats.Open.Should().Be(4);
         stats.NotDispatched.Should().Be(1);
         stats.Completed.Should().Be(2);
     }
+
+    [Fact]
+    public async Task GetStatsAsync_OrgWideUserSeesAllNonTemplateOrders()
+    {
+        using var ctx = NewContext();
+        ctx.workOrders.AddRange(
+            new WorkOrder { AccountId = 1, Status = "Open" },
+            new WorkOrder { AccountId = 2, Status = "Done" },
+            new WorkOrder { Status = "Open", istemplate = true });
+        ctx.SaveChanges();
+
+        var stats = await NewService(ctx).GetStatsAsync(
+            OrgWideUser(), new DashboardStatsQueryDTO(), CancellationToken.None);
+
+        stats.Total.Should().Be(2);
+        stats.Open.Should().Be(1);
+        stats.Completed.Should().Be(1);
+    }
+
+    [Fact]
+    public async Task GetStatsAsync_MissingScopeFailsClosed()
+    {
+        using var ctx = NewContext();
+        var user = new ClaimsPrincipal(new ClaimsIdentity(new[]
+        {
+            new Claim(ClaimTypes.Role, "Dispatcher")
+        }, "test"));
+
+        var act = () => NewService(ctx).GetStatsAsync(
+            user, new DashboardStatsQueryDTO(), CancellationToken.None);
+
+        var exception = await act.Should().ThrowAsync<WorkOrderBoardValidationException>();
+
+        exception.Which.Code.Should().Be("Forbidden");
+    }
+
+    [Fact]
+    public async Task GetStatsAsync_UsesDashboardMetricRulesForDateRange()
+    {
+        using var ctx = NewContext();
+        var today = DashboardBusinessTime.Today();
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                WorkOrderType = Data.SeaHavenIndustries.Enums.WorkOrderType.PM,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = today.ToDateTime(TimeOnly.MinValue),
+                OriginalDate = today.AddDays(-6)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                WorkOrderType = Data.SeaHavenIndustries.Enums.WorkOrderType.Emergency,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.InProgress,
+                ScheduledDate = today.AddDays(-3).ToDateTime(TimeOnly.MinValue)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                WorkOrderType = Data.SeaHavenIndustries.Enums.WorkOrderType.Reactive,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = today.ToDateTime(TimeOnly.MinValue),
+                OriginalDate = today.AddDays(-15),
+                CompletedDate = today.AddDays(-12).ToDateTime(TimeOnly.MinValue)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                WorkOrderType = Data.SeaHavenIndustries.Enums.WorkOrderType.PM,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Incomplete,
+                ScheduledDate = today.AddDays(4).ToDateTime(TimeOnly.MinValue)
+            });
+        ctx.SaveChanges();
+
+        var query = new DashboardStatsQueryDTO
+        {
+            DateFrom = today.AddDays(-10),
+            DateTo = today.AddDays(10)
+        };
+        var stats = await NewService(ctx).GetStatsAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        stats.Total.Should().Be(4);
+        stats.Breakdown.Overdue.Should().Be(1);
+        stats.Breakdown.Other.Should().Be(0);
+        stats.Breakdown.PM.Should().Be(2);
+        stats.Breakdown.Emergency.Should().Be(0);
+        stats.Breakdown.Reactive.Should().Be(1);
+        (stats.Breakdown.PM + stats.Breakdown.Emergency + stats.Breakdown.Reactive
+            + stats.Breakdown.Overdue + stats.Breakdown.Other).Should().Be(stats.Total);
+        stats.DueCount.Should().Be(3);
+        stats.CompletedDueCount.Should().Be(1);
+        stats.CompletionRate.Should().Be(33.33m);
+        stats.AverageResolutionDays.Should().Be(3m);
+    }
+
+    [Fact]
+    public async Task GetStatsAsync_DispatcherOnlySeesAssignedOrders()
+    {
+        using var ctx = NewContext();
+        ctx.workOrders.AddRange(
+            new WorkOrder { AccountId = 1, Status = "Open", AssignTo = "dispatcher-1" },
+            new WorkOrder { AccountId = 1, Status = "Open", AssignTo = "dispatcher-2" });
+        ctx.SaveChanges();
+
+        var stats = await NewService(ctx).GetStatsAsync(
+            AccountUser(1, role: "Dispatcher"), new DashboardStatsQueryDTO(), CancellationToken.None);
+
+        stats.Total.Should().Be(1);
+        stats.Open.Should().Be(1);
+    }
+
+    [Fact]
+    public async Task GetWorkloadAsync_UsesRoleScopeAndExcludesTerminalOrdersFromOpenCount()
+    {
+        using var ctx = NewContext();
+        ctx.Roles.Add(new IdentityRole
+        {
+            Id = "dispatcher-role",
+            Name = "Dispatcher",
+            NormalizedName = "DISPATCHER"
+        });
+        ctx.Users.AddRange(
+            new ApplicationUser { Id = "dispatcher-1", FirstName = "Ada", LastName = "One" },
+            new ApplicationUser { Id = "dispatcher-2", FirstName = "Ben", LastName = "Two" });
+        ctx.UserRoles.AddRange(
+            new IdentityUserRole<string> { UserId = "dispatcher-1", RoleId = "dispatcher-role" },
+            new IdentityUserRole<string> { UserId = "dispatcher-2", RoleId = "dispatcher-role" });
+        ctx.workOrders.AddRange(
+            new WorkOrder { AccountId = 1, AssignTo = "dispatcher-1", Status = "Open" },
+            new WorkOrder { AccountId = 1, AssignTo = "dispatcher-1", LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed },
+            new WorkOrder { AccountId = 1, AssignTo = "dispatcher-2", Status = "Open" });
+        ctx.SaveChanges();
+
+        var result = await NewService(ctx).GetWorkloadAsync(
+            AccountUser(1, "dispatcher-1", "Dispatcher"),
+            new DashboardStatsQueryDTO(),
+            1,
+            CancellationToken.None);
+
+        result.TotalDispatchers.Should().Be(1);
+        result.Items.Should().ContainSingle();
+        result.Items[0].DispatcherName.Should().Be("Ada One");
+        result.Items[0].TotalCount.Should().Be(2);
+        result.Items[0].OpenCount.Should().Be(1);
+        result.PageSize.Should().Be(10);
+
+        var adminResult = await NewService(ctx).GetWorkloadAsync(
+            AccountUser(1),
+            new DashboardStatsQueryDTO(),
+            1,
+            CancellationToken.None);
+
+        adminResult.TotalDispatchers.Should().Be(2);
+        adminResult.Items.Select(item => item.DispatcherName)
+            .Should().ContainInOrder("Ada One", "Ben Two");
+
+        var performance = await NewService(ctx).GetPerformanceAsync(
+            AccountUser(1),
+            new DashboardStatsQueryDTO(),
+            1,
+            CancellationToken.None);
+
+        performance.TotalDispatchers.Should().Be(2);
+        performance.Items[0].DispatcherName.Should().Be("Ada One");
+    }
+
+    [Fact]
+    public async Task GetPerformanceAsync_UsesDueOnlyRateAndOriginalDateResolution()
+    {
+        using var ctx = NewContext();
+        ctx.Roles.Add(new IdentityRole
+        {
+            Id = "dispatcher-role",
+            Name = "Dispatcher",
+            NormalizedName = "DISPATCHER"
+        });
+        ctx.Users.Add(new ApplicationUser
+        {
+            Id = "dispatcher-1",
+            FirstName = "Ada",
+            LastName = "One",
+            Color = "#123456"
+        });
+        ctx.UserRoles.Add(new IdentityUserRole<string>
+        {
+            UserId = "dispatcher-1",
+            RoleId = "dispatcher-role"
+        });
+        var today = DashboardBusinessTime.Today();
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                AssignTo = "dispatcher-1",
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = today.ToDateTime(TimeOnly.MinValue),
+                OriginalDate = today.AddDays(-5),
+                CompletedDate = today.AddDays(-2).ToDateTime(TimeOnly.MinValue)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                AssignTo = "dispatcher-1",
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = today.AddDays(3).ToDateTime(TimeOnly.MinValue)
+            });
+        ctx.SaveChanges();
+
+        var result = await NewService(ctx).GetPerformanceAsync(
+            AccountUser(1),
+            new DashboardStatsQueryDTO(),
+            1,
+            CancellationToken.None);
+
+        result.Items.Should().ContainSingle();
+        result.Items[0].CompletionRate.Should().Be(100m);
+        result.Items[0].AverageResolutionDays.Should().Be(3m);
+        result.Items[0].Color.Should().Be("#123456");
+    }
+
+    [Fact]
+    public async Task GetRegionsAsync_UsesCanonicalBucketsAndUnmappedOther()
+    {
+        await using var ctx = NewContext();
+        ctx.Locations.AddRange(
+            new Locations { Id = 1, State = "NY" },
+            new Locations { Id = 2, State = "ca" },
+            new Locations { Id = 3, State = "XX" });
+        ctx.workOrders.AddRange(
+            new WorkOrder { AccountId = 1, LocationId = 1 },
+            new WorkOrder { AccountId = 1, LocationId = 2 },
+            new WorkOrder { AccountId = 1, LocationId = 3 },
+            new WorkOrder { AccountId = 1, LocationId = null });
+        await ctx.SaveChangesAsync();
+
+        var result = await NewService(ctx).GetRegionsAsync(
+            AccountUser(1), new DashboardStatsQueryDTO(), CancellationToken.None);
+
+        result.Items.Select(row => row.Region).Should().Equal(
+            "East", "Central", "West", "California", "Unmapped/Other");
+        result.Items.Select(row => row.WorkOrderCount).Should().Equal(1, 0, 0, 1, 2);
+    }
+
+    [Fact]
+    public async Task GetVendorInsightsAsync_IsCompanyWideAndUsesVendorMetrics()
+    {
+        await using var ctx = NewContext();
+        ctx.VendorCompanies.Add(new VendorCompany { Id = 10, Name = "Acme Services", IsDeleted = false });
+        ctx.Vendors.Add(new Vendor
+        {
+            Id = 20,
+            CompanyId = 10,
+            IsActive = true,
+            CompanyName = "Acme Services"
+        });
+        ctx.Dispatches.Add(new Dispatch { Id = 30, VendorId = 20 });
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                PrimaryDispatchId = 30,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = DateTime.UtcNow.Date.AddDays(-3),
+                CompletedDate = DateTime.UtcNow.Date.AddDays(-1),
+                RescheduleCount = 1
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                PrimaryDispatchId = 30,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = DateTime.UtcNow.Date.AddDays(-2),
+                CompletedDate = DateTime.UtcNow.Date.AddDays(-1)
+            });
+        await ctx.SaveChangesAsync();
+
+        var result = await NewService(ctx).GetVendorInsightsAsync(
+            AccountUser(1), CancellationToken.None);
+
+        result.TotalVendors.Should().Be(1);
+        result.Items.Should().ContainSingle();
+        result.Items[0].TotalJobs.Should().Be(2);
+        result.Items[0].CompletionRate.Should().Be(100);
+        result.Items[0].RescheduleRate.Should().Be(50);
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_DailyBucketsClassifyByCalendarScheduledDate()
+    {
+        using var ctx = NewContext();
+        // ScheduledDate is a stored calendar value (board writes persist `.Date`), so a work
+        // order buckets on its own calendar day regardless of the time-of-day component. The
+        // UTC hours below were previously shifted a full day by an America/New_York conversion
+        // (03:00 UTC -> prior evening), so they double as a regression guard: each row must now
+        // stay on the calendar date it was scheduled for.
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 1, 15, 3, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Canceled,
+                ScheduledDate = new DateTime(2026, 1, 14, 15, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = new DateTime(2026, 1, 15, 17, 0, 0, DateTimeKind.Utc),
+                CompletedDate = new DateTime(2026, 1, 16, 15, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 1, 16, 3, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 1, 17, 3, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 1, 13, 20, 0, 0, DateTimeKind.Utc)
+            });
+        ctx.SaveChanges();
+
+        var query = new DashboardTrendQueryDTO
+        {
+            DateFrom = new DateOnly(2026, 1, 14),
+            DateTo = new DateOnly(2026, 1, 16)
+        };
+        var trend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        trend.Granularity.Should().Be("day");
+        trend.Buckets.Select(bucket => bucket.Date).Should().Equal(
+            new DateOnly(2026, 1, 14), new DateOnly(2026, 1, 15), new DateOnly(2026, 1, 16));
+        trend.Buckets.Select(bucket => bucket.Label).Should().Equal(
+            "2026-01-14", "2026-01-15", "2026-01-16");
+
+        // 01-14: only the canceled row scheduled that calendar day.
+        trend.Buckets[0].Total.Should().Be(1);
+        trend.Buckets[0].Open.Should().Be(0);
+        trend.Buckets[0].Canceled.Should().Be(1);
+        trend.Buckets[0].Completed.Should().Be(0);
+        trend.Buckets[0].Overdue.Should().Be(0);
+
+        // 01-15: the 03:00 UTC scheduled row (no longer shifted to 01-14) plus the completed row.
+        trend.Buckets[1].Total.Should().Be(2);
+        trend.Buckets[1].Open.Should().Be(1);
+        trend.Buckets[1].Completed.Should().Be(1);
+        trend.Buckets[1].Canceled.Should().Be(0);
+        trend.Buckets[1].Overdue.Should().Be(1);
+
+        // 01-16: the 03:00 UTC scheduled row that stays on its own day.
+        trend.Buckets[2].Total.Should().Be(1);
+        trend.Buckets[2].Open.Should().Be(1);
+        trend.Buckets[2].Overdue.Should().Be(1);
+
+        trend.Buckets.Should().OnlyContain(bucket => !bucket.IsCurrent);
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_MidnightScheduledDateStaysInTodayBucketAndIsNotOverdue()
+    {
+        using var ctx = NewContext();
+        var today = DashboardBusinessTime.Today();
+        // A board-scheduled work order for today is stored as midnight (`.Date`). It must land
+        // in the Today bucket and count as open, not roll back to yesterday and read as overdue.
+        ctx.workOrders.Add(new WorkOrder
+        {
+            AccountId = 1,
+            LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+            ScheduledDate = today.ToDateTime(TimeOnly.MinValue)
+        });
+        ctx.SaveChanges();
+
+        var query = new DashboardTrendQueryDTO
+        {
+            DateFrom = today.AddDays(-1),
+            DateTo = today.AddDays(1)
+        };
+        var trend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        var todayBucket = trend.Buckets.Single(bucket => bucket.Date == today);
+        todayBucket.Total.Should().Be(1);
+        todayBucket.Open.Should().Be(1);
+        todayBucket.Overdue.Should().Be(0);
+
+        var yesterdayBucket = trend.Buckets.Single(bucket => bucket.Date == today.AddDays(-1));
+        yesterdayBucket.Total.Should().Be(0);
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_ThreeMonthRangeUsesWeeklyMondayBuckets()
+    {
+        using var ctx = NewContext();
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 6, 17, 12, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 6, 16, 3, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = new DateTime(2026, 9, 16, 12, 0, 0, DateTimeKind.Utc),
+                CompletedDate = new DateTime(2026, 9, 16, 18, 0, 0, DateTimeKind.Utc)
+            });
+        ctx.SaveChanges();
+
+        var query = new DashboardTrendQueryDTO
+        {
+            Range = "3m",
+            DateFrom = new DateOnly(2026, 6, 17),
+            DateTo = new DateOnly(2026, 9, 16)
+        };
+        var trend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        trend.Granularity.Should().Be("week");
+        trend.Buckets.Should().HaveCount(14);
+        trend.Buckets.Select(bucket => bucket.Date.DayOfWeek)
+            .Should().OnlyContain(day => day == DayOfWeek.Monday);
+        trend.Buckets[0].Date.Should().Be(new DateOnly(2026, 6, 15));
+        trend.Buckets[0].Total.Should().Be(2);
+        trend.Buckets[0].Open.Should().Be(2);
+        trend.Buckets[^1].Date.Should().Be(new DateOnly(2026, 9, 14));
+        trend.Buckets[^1].Total.Should().Be(1);
+        trend.Buckets[^1].Completed.Should().Be(1);
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_YearFilterUsesMonthlyBuckets()
+    {
+        using var ctx = NewContext();
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 1, 15, 12, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Completed,
+                ScheduledDate = new DateTime(2026, 3, 20, 4, 0, 0, DateTimeKind.Utc),
+                CompletedDate = new DateTime(2026, 3, 21, 4, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2025, 12, 31, 20, 0, 0, DateTimeKind.Utc)
+            },
+            // 2027-01-01 by calendar: outside the 2026 window. Previously an
+            // America/New_York conversion pulled it back to 2026-12-31 and into December.
+            new WorkOrder
+            {
+                AccountId = 1,
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2027, 1, 1, 3, 0, 0, DateTimeKind.Utc)
+            });
+        ctx.SaveChanges();
+
+        var trend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), new DashboardTrendQueryDTO { Year = 2026 }, CancellationToken.None);
+
+        trend.Granularity.Should().Be("month");
+        trend.Buckets.Should().HaveCount(12);
+        trend.Buckets[0].Label.Should().Be("2026-01-01");
+        trend.Buckets[0].Total.Should().Be(1);
+        trend.Buckets[0].Open.Should().Be(1);
+        trend.Buckets[0].Overdue.Should().Be(1);
+        trend.Buckets[2].Label.Should().Be("2026-03-01");
+        trend.Buckets[2].Total.Should().Be(1);
+        trend.Buckets[2].Completed.Should().Be(1);
+        // December stays empty: the 2027-01-01 row is no longer pulled inside the window.
+        trend.Buckets[11].Label.Should().Be("2026-12-01");
+        trend.Buckets[11].Total.Should().Be(0);
+        trend.Buckets[11].Open.Should().Be(0);
+        trend.Today.Should().Be(DashboardBusinessTime.Today());
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_MarksTodayBucketAsCurrent()
+    {
+        using var ctx = NewContext();
+        var today = DashboardBusinessTime.Today();
+        ctx.workOrders.Add(new WorkOrder
+        {
+            AccountId = 1,
+            LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+            ScheduledDate = today.AddDays(-2).ToDateTime(new TimeOnly(12, 0))
+        });
+        ctx.SaveChanges();
+
+        var query = new DashboardTrendQueryDTO
+        {
+            DateFrom = today.AddDays(-2),
+            DateTo = today.AddDays(2)
+        };
+        var trend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        trend.Today.Should().Be(today);
+        trend.Buckets.Should().HaveCount(5);
+        trend.Buckets.Count(bucket => bucket.IsCurrent).Should().Be(1);
+        trend.Buckets.Single(bucket => bucket.IsCurrent).Date.Should().Be(today);
+        trend.Buckets[0].Total.Should().Be(1);
+        trend.Buckets.Single(bucket => bucket.Date == today).Total.Should().Be(0);
+    }
+
+    [Fact]
+    public async Task GetTrendAsync_DispatcherRoleAndTenantScopeMatchStats()
+    {
+        using var ctx = NewContext();
+        ctx.workOrders.AddRange(
+            new WorkOrder
+            {
+                AccountId = 1,
+                AssignTo = "dispatcher-1",
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 2, 2, 12, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 1,
+                AssignTo = "dispatcher-2",
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 2, 2, 12, 0, 0, DateTimeKind.Utc)
+            },
+            new WorkOrder
+            {
+                AccountId = 2,
+                AssignTo = "dispatcher-1",
+                LifecycleStatus = Data.SeaHavenIndustries.Enums.LifecycleStatus.Scheduled,
+                ScheduledDate = new DateTime(2026, 2, 2, 12, 0, 0, DateTimeKind.Utc)
+            });
+        ctx.SaveChanges();
+
+        var query = new DashboardTrendQueryDTO
+        {
+            DateFrom = new DateOnly(2026, 2, 2),
+            DateTo = new DateOnly(2026, 2, 3)
+        };
+
+        var dispatcherTrend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1, "dispatcher-1", "Dispatcher"), query, CancellationToken.None);
+
+        dispatcherTrend.Buckets.Should().HaveCount(2);
+        dispatcherTrend.Buckets[0].Total.Should().Be(1);
+        dispatcherTrend.Buckets[1].Total.Should().Be(0);
+
+        var adminTrend = await NewService(ctx).GetTrendAsync(
+            AccountUser(1), query, CancellationToken.None);
+
+        adminTrend.Buckets[0].Total.Should().Be(2);
+
+        var otherAccountTrend = await NewService(ctx).GetTrendAsync(
+            AccountUser(2), query, CancellationToken.None);
+
+        otherAccountTrend.Buckets[0].Total.Should().Be(1);
+    }
 }

Api.SeaHavenIndustries.Tests/WorkOrderGetByIdBindingTests.cs

@@ -0,0 +1,106 @@
+using Api.SeaHavenIndustries.Controllers;
+using Data.SeaHavenIndustries;
+using FluentAssertions;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Controllers;
+using Microsoft.AspNetCore.Mvc.Infrastructure;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Moq;
+using SeaHaven.DataServices.Models;
+using SeaHaven.Services.Interfaces;
+using Xunit;
+
+namespace Api.SeaHavenIndustries.Tests;
+
+/// <summary>
+/// SH-374: GET api/WorkOrder/GetWorkorderById?id= must read the id from the query string, while
+/// GET api/WorkOrder/{id} keeps reading it from the route. Both must return the same work order,
+/// and an unknown id keeps the existing "ID not found!" response.
+/// </summary>
+public class WorkOrderGetByIdBindingTests
+{
+    private const int ExistingId = 374;
+    private const int UnknownId = 999_999;
+
+    private static ControllerActionDescriptor ActionForTemplate(string relativeTemplate)
+    {
+        var services = new ServiceCollection();
+        services.AddLogging();
+        services.AddMvcCore().AddApplicationPart(typeof(WorkOrderController).Assembly);
+
+        using var provider = services.BuildServiceProvider();
+        return provider.GetRequiredService<IActionDescriptorCollectionProvider>().ActionDescriptors.Items
+            .OfType<ControllerActionDescriptor>()
+            .Where(cad => cad.ControllerTypeInfo == typeof(WorkOrderController))
+            .Where(cad => cad.ActionConstraints!
+                .OfType<Microsoft.AspNetCore.Mvc.ActionConstraints.HttpMethodActionConstraint>()
+                .Any(c => c.HttpMethods.Contains("GET")))
+            .Single(cad => string.Equals(
+                cad.AttributeRouteInfo?.Template?.Trim('/'),
+                $"api/WorkOrder/{relativeTemplate}",
+                StringComparison.Ordinal));
+    }
+
+    [Theory]
+    [InlineData("GetWorkorderById", "Query")]
+    [InlineData("{id:int}", "Path")]
+    public void Id_binds_from_the_source_its_route_provides(string relativeTemplate, string expectedSource)
+    {
+        var action = ActionForTemplate(relativeTemplate);
+
+        var id = action.Parameters.Single(p => p.Name == "id");
+        id.BindingInfo.Should().NotBeNull();
+        id.BindingInfo!.BindingSource!.Id.Should().Be(expectedSource);
+    }
+
+    private static (WorkOrderController Controller, WorkOrderDetailReadModel Existing) NewController()
+    {
+        var existing = new WorkOrderDetailReadModel { Id = ExistingId, Title = "Leaking roof" };
+        var service = new Mock<IWorkOrderService>();
+        service.Setup(s => s.GetWorkOrderDetailAsync(ExistingId, It.IsAny<int?>())).ReturnsAsync(existing);
+        service.Setup(s => s.GetWorkOrderDetailAsync(UnknownId, It.IsAny<int?>()))
+            .ReturnsAsync((WorkOrderDetailReadModel?)null);
+
+        var controller = new WorkOrderController(
+            service.Object,
+            Mock.Of<IWorkOrderAccountResolver>(),
+            Mock.Of<ILogger<WorkOrderController>>())
+        {
+            ControllerContext = new ControllerContext { HttpContext = new DefaultHttpContext() }
+        };
+        return (controller, existing);
+    }
+
+    [Fact]
+    public async Task Existing_id_returns_the_same_work_order_through_both_routes()
+    {
+        var (controller, existing) = NewController();
+
+        var byQuery = await controller.GetWorkorderById(ExistingId);
+        var byRoute = await controller.GetWorkorderByRouteId(ExistingId);
+
+        byQuery.Should().BeOfType<OkObjectResult>().Which.Value.Should().BeSameAs(existing);
+        byRoute.Should().BeOfType<OkObjectResult>().Which.Value.Should().BeSameAs(existing);
+    }
+
+    [Fact]
+    public async Task Unknown_id_keeps_the_not_found_response_through_both_routes()
+    {
+        var (controller, _) = NewController();
+
+        foreach (var result in new[]
+                 {
+                     await controller.GetWorkorderById(UnknownId),
+                     await controller.GetWorkorderByRouteId(UnknownId),
+                 })
+        {
+            var body = result.Should().BeOfType<BadRequestObjectResult>().Which.Value
+                .Should().BeOfType<Response>().Subject;
+            body.Status.Should().Be("Error");
+            body.Message.Should().Be("ID not found!");
+        }
+    }
+}

Api.SeaHavenIndustries.Tests/WorkOrderRouteContractTests.cs

@@ -17,8 +17,8 @@ namespace Api.SeaHavenIndustries.Tests;
 /// combination is registered more than once by different actions.
 ///
 /// Routes are read from the ASP.NET Core action descriptor provider so the EXACT templates the
-/// framework will dispatch are compared, including multi-attribute actions (e.g. Editworkorder,
-/// GetWorkorderById) and the two shared controller-level base routes.
+/// framework will dispatch are compared, including multi-attribute actions (e.g. Editworkorder)
+/// and the two shared controller-level base routes.
 /// </summary>
 public class WorkOrderRouteContractTests
 {
@@ -39,7 +39,7 @@ public class WorkOrderRouteContractTests
     /// WorkOrderController exposed, plus the author-only board-comment edit endpoint (SH-122).
     /// Every action is reachable under both api/WorkOrder and api/workorders; that base-route
     /// duplication is collapsed here, so this is the distinct action-relative contract. 52 routes
-    /// come from 50 actions (Editworkorder and GetWorkorderById each bind two routes).
+    /// come from 51 actions (Editworkorder binds two routes).
     /// </summary>
     private static readonly HashSet<string> ExpectedWorkOrderEndpoints = new(StringComparer.Ordinal)
     {

Api.SeaHavenIndustries/Controllers/DashboardController.cs

@@ -1,5 +1,6 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
+using SeaHaven.Services.DTOs;
 using SeaHaven.Services.Interfaces;
 
 namespace Api.SeaHavenIndustries.Controllers
@@ -17,17 +18,155 @@ namespace Api.SeaHavenIndustries.Controllers
         }
 
         [HttpGet("Stats")]
-        public async Task<IActionResult> GetStats(CancellationToken cancellationToken)
+        public async Task<IActionResult> GetStats(
+            [FromQuery] DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken)
         {
-            var stats = await _dashboardService.GetStatsAsync(cancellationToken);
+            var stats = await _dashboardService.GetStatsAsync(User, query, cancellationToken);
 
             return Ok(new
             {
                 total = stats.Total,
                 open = stats.Open,
                 notDispatched = stats.NotDispatched,
-                completed = stats.Completed
+                completed = stats.Completed,
+                breakdown = stats.Breakdown,
+                dueCount = stats.DueCount,
+                completedDueCount = stats.CompletedDueCount,
+                completionRate = stats.CompletionRate,
+                averageResolutionDays = stats.AverageResolutionDays
             });
         }
+
+        [HttpGet("Workload")]
+        public async Task<IActionResult> GetWorkload(
+            [FromQuery] DashboardStatsQueryDTO query,
+            [FromQuery] int page = 1,
+            CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                return Ok(await _dashboardService.GetWorkloadAsync(
+                    User, query, page, cancellationToken));
+            }
+            catch (SeaHaven.Services.Exceptions.WorkOrderBoardValidationException ex)
+                when (ex.Code == "Forbidden")
+            {
+                return StatusCode(StatusCodes.Status403Forbidden, new
+                {
+                    code = ex.Code,
+                    message = ex.Message
+                });
+            }
+            catch (ArgumentOutOfRangeException ex)
+            {
+                return BadRequest(ex.Message);
+            }
+        }
+
+        [HttpGet("Performance")]
+        public async Task<IActionResult> GetPerformance(
+            [FromQuery] DashboardStatsQueryDTO query,
+            [FromQuery] int page = 1,
+            CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                return Ok(await _dashboardService.GetPerformanceAsync(
+                    User, query, page, cancellationToken));
+            }
+            catch (SeaHaven.Services.Exceptions.WorkOrderBoardValidationException ex)
+                when (ex.Code == "Forbidden")
+            {
+                return StatusCode(StatusCodes.Status403Forbidden, new
+                {
+                    code = ex.Code,
+                    message = ex.Message
+                });
+            }
+            catch (ArgumentOutOfRangeException ex)
+            {
+                return BadRequest(ex.Message);
+            }
+        }
+
+        [HttpGet("Regions")]
+        public async Task<IActionResult> GetRegions(
+            [FromQuery] DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                return Ok(await _dashboardService.GetRegionsAsync(User, query, cancellationToken));
+            }
+            catch (SeaHaven.Services.Exceptions.WorkOrderBoardValidationException ex)
+                when (ex.Code == "Forbidden")
+            {
+                return StatusCode(StatusCodes.Status403Forbidden, new
+                {
+                    code = ex.Code,
+                    message = ex.Message
+                });
+            }
+        }
+
+        [HttpGet("Trend")]
+        public async Task<IActionResult> GetTrend(
+            [FromQuery] DashboardTrendQueryDTO query,
+            CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                var trend = await _dashboardService.GetTrendAsync(User, query, cancellationToken);
+
+                return Ok(new
+                {
+                    granularity = trend.Granularity,
+                    today = trend.Today,
+                    buckets = trend.Buckets.Select(bucket => new
+                    {
+                        date = bucket.Date,
+                        label = bucket.Label,
+                        total = bucket.Total,
+                        open = bucket.Open,
+                        completed = bucket.Completed,
+                        canceled = bucket.Canceled,
+                        overdue = bucket.Overdue,
+                        isCurrent = bucket.IsCurrent
+                    })
+                });
+            }
+            catch (SeaHaven.Services.Exceptions.WorkOrderBoardValidationException ex)
+                when (ex.Code == "Forbidden")
+            {
+                return StatusCode(StatusCodes.Status403Forbidden, new
+                {
+                    code = ex.Code,
+                    message = ex.Message
+                });
+            }
+            catch (ArgumentOutOfRangeException ex)
+            {
+                return BadRequest(ex.Message);
+            }
+        }
+
+        [HttpGet("VendorInsights")]
+        public async Task<IActionResult> GetVendorInsights(CancellationToken cancellationToken = default)
+        {
+            try
+            {
+                return Ok(await _dashboardService.GetVendorInsightsAsync(User, cancellationToken));
+            }
+            catch (SeaHaven.Services.Exceptions.WorkOrderBoardValidationException ex)
+                when (ex.Code == "Forbidden")
+            {
+                return StatusCode(StatusCodes.Status403Forbidden, new
+                {
+                    code = ex.Code,
+                    message = ex.Message
+                });
+            }
+        }
     }
 }

Api.SeaHavenIndustries/Controllers/WorkOrderController.cs

@@ -208,9 +208,15 @@ namespace Api.SeaHavenIndustries.Controllers
             }
         }
 
-        [HttpGet("{id:int}")]
+        // SH-374: two actions, one per route, so each binds id from the source its route provides.
+        // A single action carrying both routes inferred id as [FromRoute] and the query route got 0.
         [HttpGet("GetWorkorderById")]
-        public async Task<IActionResult> GetWorkorderById(int id)
+        public Task<IActionResult> GetWorkorderById([FromQuery] int id) => GetWorkorderDetail(id);
+
+        [HttpGet("{id:int}")]
+        public Task<IActionResult> GetWorkorderByRouteId([FromRoute] int id) => GetWorkorderDetail(id);
+
+        private async Task<IActionResult> GetWorkorderDetail(int id)
         {
             try
             {

SeaHaven.DataServices/Implementation/DashboardDataService.cs

@@ -1,5 +1,7 @@
 using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries.Enums;
 using Microsoft.EntityFrameworkCore;
+using SeaHaven.DataServices.Helpers;
 using SeaHaven.DataServices.Interfaces;
 
 namespace SeaHaven.DataServices.Implementation
@@ -13,9 +15,15 @@ namespace SeaHaven.DataServices.Implementation
             _context = context;
         }
 
-        public async Task<DashboardCounts> GetWorkOrderCountsAsync(CancellationToken cancellationToken)
+        public async Task<DashboardCounts> GetWorkOrderCountsAsync(
+            int? accountId,
+            CancellationToken cancellationToken)
         {
             var query = _context.workOrders.Where(w => w.istemplate != true);
+            if (accountId is int scopedAccountId)
+            {
+                query = query.Where(w => w.AccountId == scopedAccountId);
+            }
 
             var total = await query.CountAsync(cancellationToken);
             var open = await query.CountAsync(w => w.Status == "Open" || w.Status == "In Progress" || w.Status == "On Hold", cancellationToken);
@@ -30,5 +38,130 @@ namespace SeaHaven.DataServices.Implementation
                 Completed = completed
             };
         }
+
+        public async Task<IReadOnlyList<DashboardWorkOrder>> GetDashboardWorkOrdersAsync(
+            int? accountId,
+            string? dispatcherId,
+            DateOnly? dateFrom,
+            DateOnly? dateTo,
+            CancellationToken cancellationToken)
+        {
+            var query = WorkOrderBoardQueryFilters.ApplyBaseScope(_context.workOrders.AsNoTracking());
+            if (accountId is int scopedAccountId)
+                query = WorkOrderBoardQueryFilters.ApplyAccountScope(query, scopedAccountId);
+
+            if (dispatcherId != null)
+                query = query.Where(w => w.AssignTo == dispatcherId);
+
+            if (dateFrom is DateOnly from && dateTo is DateOnly to)
+            {
+                var fromDate = from.ToDateTime(TimeOnly.MinValue);
+                var toDateExclusive = to.AddDays(1).ToDateTime(TimeOnly.MinValue);
+                query = query.Where(w =>
+                    w.ScheduledDate >= fromDate && w.ScheduledDate < toDateExclusive);
+            }
+
+            return await query
+                .Select(w => new DashboardWorkOrder(
+                    w.Id,
+                    w.AssignTo,
+                    w.WorkOrderType,
+                    w.LifecycleStatus,
+                    w.LegacyStatus ?? w.Status,
+                    w.ScheduledDate,
+                    w.OriginalDate,
+                    w.CompletedDate,
+                    w.Locations == null ? null : w.Locations.State,
+                    w.RescheduleCount,
+                    w.PrimaryDispatch == null || w.PrimaryDispatch.Vendor == null
+                        ? null
+                        : w.PrimaryDispatch.Vendor.CompanyId,
+                    w.PrimaryDispatch == null || w.PrimaryDispatch.Vendor == null
+                        || w.PrimaryDispatch.Vendor.Company == null
+                        ? null
+                        : w.PrimaryDispatch.Vendor.Company.Name,
+                    w.PrimaryDispatch != null && w.PrimaryDispatch.Vendor != null
+                        && w.PrimaryDispatch.Vendor.IsActive,
+                    w.PrimaryDispatch != null && w.PrimaryDispatch.Vendor != null
+                        && w.PrimaryDispatch.Vendor.Company != null
+                        && w.PrimaryDispatch.Vendor.Company.IsDeleted == true))
+                .ToListAsync(cancellationToken);
+        }
+
+        public async Task<IReadOnlyList<DashboardDispatcherWorkload>> GetDispatcherWorkloadAsync(
+            int? accountId,
+            string? dispatcherId,
+            DateOnly? dateFrom,
+            DateOnly? dateTo,
+            CancellationToken cancellationToken)
+        {
+            var dispatcherUsers = from user in _context.Users.AsNoTracking()
+                                  join userRole in _context.UserRoles
+                                      on user.Id equals userRole.UserId
+                                  join role in _context.Roles
+                                      on userRole.RoleId equals role.Id
+                                  where user.IsDeleted != true
+                                      && (role.Name == "Dispatcher" || role.Name == "DISPATCHER")
+                                      && (dispatcherId == null || user.Id == dispatcherId)
+                                  select new
+                                  {
+                                      user.Id,
+                                      Name = ((user.FirstName ?? "") + " " + (user.LastName ?? "")).Trim(),
+                                      user.Color
+                                  };
+
+            var workOrders = WorkOrderBoardQueryFilters.ApplyBaseScope(_context.workOrders.AsNoTracking());
+            if (accountId is int scopedAccountId)
+                workOrders = WorkOrderBoardQueryFilters.ApplyAccountScope(workOrders, scopedAccountId);
+
+            if (dateFrom is DateOnly from && dateTo is DateOnly to)
+            {
+                var fromDate = from.ToDateTime(TimeOnly.MinValue);
+                var toDateExclusive = to.AddDays(1).ToDateTime(TimeOnly.MinValue);
+                workOrders = workOrders.Where(w =>
+                    w.ScheduledDate >= fromDate && w.ScheduledDate < toDateExclusive);
+            }
+
+            var counts = await workOrders
+                .Where(w => w.AssignTo != null)
+                .GroupBy(w => w.AssignTo!)
+                .Select(group => new
+                {
+                    DispatcherId = group.Key,
+                    TotalCount = group.Count(),
+                    OpenCount = group.Count(w =>
+                        w.LifecycleStatus != LifecycleStatus.Completed
+                        && w.LifecycleStatus != LifecycleStatus.Canceled
+                        && (w.LifecycleStatus != null
+                            || (w.LegacyStatus ?? w.Status) != "Done"
+                            && (w.LegacyStatus ?? w.Status) != "Completed"
+                            && (w.LegacyStatus ?? w.Status) != "Complete"
+                            && (w.LegacyStatus ?? w.Status) != "Closed"
+                            && (w.LegacyStatus ?? w.Status) != "Canceled"
+                            && (w.LegacyStatus ?? w.Status) != "Cancelled"))
+                })
+                .ToListAsync(cancellationToken);
+
+            var dispatcherList = await dispatcherUsers
+                .Distinct()
+                .ToListAsync(cancellationToken);
+
+            return dispatcherList
+                .GroupJoin(
+                    counts,
+                    user => user.Id,
+                    count => count.DispatcherId,
+                    (user, matchingCounts) =>
+                    {
+                        var count = matchingCounts.SingleOrDefault();
+                        return new DashboardDispatcherWorkload(
+                                user.Id,
+                                user.Name,
+                                user.Color,
+                                count?.TotalCount ?? 0,
+                                count?.OpenCount ?? 0);
+                    })
+                .ToList();
+        }
     }
 }

SeaHaven.DataServices/Implementation/TeamPermissionOverrideDataService.cs

@@ -63,22 +63,39 @@ public sealed class TeamPermissionOverrideDataService : ITeamPermissionOverrideD
                     && permission.PermissionKey == permissionKey,
                 cancellationToken);
 
-        if (existing is null)
-        {
-            await _context.UserPermissionOverrides.AddAsync(
-                new UserPermissionOverride
-                {
-                    UserId = userId,
-                    PermissionKey = permissionKey,
-                    State = state
-                },
-                cancellationToken);
-        }
-        else
+        if (existing is not null)
         {
             existing.State = state;
+            await _context.SaveChangesAsync(cancellationToken);
+            return;
         }
 
-        await _context.SaveChangesAsync(cancellationToken);
+        var addition = new UserPermissionOverride
+        {
+            UserId = userId,
+            PermissionKey = permissionKey,
+            State = state
+        };
+        await _context.UserPermissionOverrides.AddAsync(addition, cancellationToken);
+
+        try
+        {
+            await _context.SaveChangesAsync(cancellationToken);
+        }
+        catch (DbUpdateException)
+        {
+            // A concurrent PUT inserted the same (UserId, PermissionKey) between our
+            // existence check and this save, violating PK_UserPermissionOverrides.
+            // Converge on the caller's intent by updating the persisted row.
+            _context.Entry(addition).State = EntityState.Detached;
+
+            var winner = await _context.UserPermissionOverrides
+                .SingleAsync(
+                    permission => permission.UserId == userId
+                        && permission.PermissionKey == permissionKey,
+                    cancellationToken);
+            winner.State = state;
+            await _context.SaveChangesAsync(cancellationToken);
+        }
     }
 }

SeaHaven.DataServices/Implementation/UserDataService.cs

@@ -144,6 +144,10 @@ namespace SeaHaven.DataServices.Implementation
                 .Where(role => role.UserId == id)
                 .ExecuteDeleteAsync(cancellationToken);
 
+            await _context.UserPermissionOverrides
+                .Where(permissionOverride => permissionOverride.UserId == id)
+                .ExecuteDeleteAsync(cancellationToken);
+
             await _context.Users
                 .Where(existingUser => existingUser.Id == id)
                 .ExecuteDeleteAsync(cancellationToken);

SeaHaven.DataServices/Interfaces/IDashboardDataService.cs

@@ -1,10 +1,51 @@
 namespace SeaHaven.DataServices.Interfaces
 {
+    using Data.SeaHavenIndustries.Enums;
+
     public interface IDashboardDataService
     {
-        Task<DashboardCounts> GetWorkOrderCountsAsync(CancellationToken cancellationToken);
+        Task<DashboardCounts> GetWorkOrderCountsAsync(
+            int? accountId,
+            CancellationToken cancellationToken);
+
+        Task<IReadOnlyList<DashboardWorkOrder>> GetDashboardWorkOrdersAsync(
+            int? accountId,
+            string? dispatcherId,
+            DateOnly? dateFrom,
+            DateOnly? dateTo,
+            CancellationToken cancellationToken);
+
+        Task<IReadOnlyList<DashboardDispatcherWorkload>> GetDispatcherWorkloadAsync(
+            int? accountId,
+            string? dispatcherId,
+            DateOnly? dateFrom,
+            DateOnly? dateTo,
+            CancellationToken cancellationToken);
     }
 
+    public sealed record DashboardWorkOrder(
+        int Id,
+        string? AssignTo,
+        WorkOrderType? WorkOrderType,
+        LifecycleStatus? LifecycleStatus,
+        string? LegacyStatus,
+        DateTime? ScheduledDate,
+        DateOnly? OriginalDate,
+        DateTime? CompletedDate,
+        string? LocationState = null,
+        int RescheduleCount = 0,
+        int? VendorCompanyId = null,
+        string? VendorCompanyName = null,
+        bool VendorIsActive = false,
+        bool VendorCompanyIsDeleted = false);
+
+    public sealed record DashboardDispatcherWorkload(
+        string DispatcherId,
+        string DispatcherName,
+        string? Color,
+        int TotalCount,
+        int OpenCount);
+
     public class DashboardCounts
     {
         public int Total { get; set; }

SeaHaven.Services/DTOs/DashboardDTOs.cs

@@ -1,10 +1,118 @@
 namespace SeaHaven.Services.DTOs
 {
+    public class DashboardStatsQueryDTO
+    {
+        public DateOnly? DateFrom { get; set; }
+        public DateOnly? DateTo { get; set; }
+    }
+
+    public sealed class DashboardTrendQueryDTO : DashboardStatsQueryDTO
+    {
+        public string? Range { get; set; }
+        public int? Year { get; set; }
+    }
+
+    public sealed class DashboardTrendResponseDTO
+    {
+        public string Granularity { get; init; } = "day";
+        public DateOnly Today { get; init; }
+        public IReadOnlyList<DashboardTrendBucketDTO> Buckets { get; init; } = [];
+    }
+
+    public sealed class DashboardTrendBucketDTO
+    {
+        public DateOnly Date { get; init; }
+        public string Label { get; init; } = string.Empty;
+        public int Total { get; init; }
+        public int Open { get; init; }
+        public int Completed { get; init; }
+        public int Canceled { get; init; }
+        public int Overdue { get; init; }
+        public bool IsCurrent { get; init; }
+    }
+
+    public sealed class DashboardWorkloadResponseDTO
+    {
+        public IReadOnlyList<DashboardWorkloadRowDTO> Items { get; init; } = [];
+        public int Page { get; init; }
+        public int PageSize { get; init; }
+        public int TotalDispatchers { get; init; }
+    }
+
+    public sealed class DashboardWorkloadRowDTO
+    {
+        public string DispatcherId { get; init; } = string.Empty;
+        public string DispatcherName { get; init; } = string.Empty;
+        public string? Color { get; init; }
+        public int TotalCount { get; init; }
+        public int OpenCount { get; init; }
+    }
+
+    public sealed class DashboardPerformanceResponseDTO
+    {
+        public IReadOnlyList<DashboardPerformanceRowDTO> Items { get; init; } = [];
+        public int Page { get; init; }
+        public int PageSize { get; init; }
+        public int TotalDispatchers { get; init; }
+    }
+
+    public sealed class DashboardPerformanceRowDTO
+    {
+        public string DispatcherId { get; init; } = string.Empty;
+        public string DispatcherName { get; init; } = string.Empty;
+        public string? Color { get; init; }
+        public decimal CompletionRate { get; init; }
+        public decimal? AverageResolutionDays { get; init; }
+    }
+
+    public sealed class DashboardRegionResponseDTO
+    {
+        public IReadOnlyList<DashboardRegionRowDTO> Items { get; init; } = [];
+    }
+
+    public sealed class DashboardRegionRowDTO
+    {
+        public string Region { get; init; } = string.Empty;
+        public int WorkOrderCount { get; init; }
+    }
+
+    public sealed class DashboardVendorInsightsResponseDTO
+    {
+        public IReadOnlyList<DashboardVendorInsightsRowDTO> Items { get; init; } = [];
+        public int Page { get; init; }
+        public int PageSize { get; init; }
+        public int TotalVendors { get; init; }
+    }
+
+    public sealed class DashboardVendorInsightsRowDTO
+    {
+        public int VendorCompanyId { get; init; }
+        public string VendorCompanyName { get; init; } = string.Empty;
+        public decimal CompletionRate { get; init; }
+        public decimal RescheduleRate { get; init; }
+        public decimal? AverageResolutionDays { get; init; }
+        public int TotalJobs { get; init; }
+    }
+
     public class DashboardStatsDTO
     {
         public int Total { get; set; }
         public int Open { get; set; }
         public int NotDispatched { get; set; }
         public int Completed { get; set; }
+        public DashboardBreakdownDTO Breakdown { get; set; } = new();
+        public int DueCount { get; set; }
+        public int CompletedDueCount { get; set; }
+        public decimal CompletionRate { get; set; }
+        public decimal? AverageResolutionDays { get; set; }
+    }
+
+    public sealed class DashboardBreakdownDTO
+    {
+        public int PM { get; set; }
+        public int Emergency { get; set; }
+        public int Reactive { get; set; }
+        public int Overdue { get; set; }
+        public int Other { get; set; }
     }
 }

SeaHaven.Services/Helpers/DashboardBusinessTime.cs

@@ -0,0 +1,13 @@
+namespace SeaHaven.Services.Helpers;
+
+public static class DashboardBusinessTime
+{
+    public const string TimeZoneId = "America/New_York";
+
+    public static DateOnly Today()
+    {
+        var timezone = TimeZoneInfo.FindSystemTimeZoneById(TimeZoneId);
+        var businessNow = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, timezone);
+        return DateOnly.FromDateTime(businessNow);
+    }
+}

SeaHaven.Services/Helpers/DashboardMetrics.cs

@@ -0,0 +1,113 @@
+using Data.SeaHavenIndustries.Enums;
+using SeaHaven.DataServices.Interfaces;
+using SeaHaven.Services.DTOs;
+
+namespace SeaHaven.Services.Helpers;
+
+public static class DashboardMetrics
+{
+    public static DashboardMetricResult Calculate(
+        IReadOnlyList<DashboardWorkOrder> workOrders,
+        DateOnly today)
+    {
+        var breakdown = new DashboardBreakdownDTO();
+        var dueCount = 0;
+        var completedDueCount = 0;
+        var resolutionDays = new List<decimal>();
+
+        foreach (var workOrder in workOrders)
+        {
+            var status = workOrder.LifecycleStatus
+                ?? LifecycleStatusMapper.ParseLifecycleStatus(workOrder.LegacyStatus);
+            var completed = status == LifecycleStatus.Completed;
+            var canceled = status == LifecycleStatus.Canceled;
+            var pastDue = IsPastDue(workOrder, status, today);
+
+            AddBreakdownCount(breakdown, workOrder.WorkOrderType, pastDue);
+
+            var due = completed || (workOrder.ScheduledDate is DateTime scheduled
+                && DateOnly.FromDateTime(scheduled.Date) <= today);
+            if (due)
+            {
+                dueCount++;
+                if (completed)
+                    completedDueCount++;
+            }
+
+            if (completed && workOrder.CompletedDate is DateTime completedDate)
+            {
+                var anchor = workOrder.OriginalDate
+                    ?? (workOrder.ScheduledDate is DateTime scheduledDate
+                        ? DateOnly.FromDateTime(scheduledDate.Date)
+                        : null);
+                if (anchor is DateOnly originalDate)
+                    resolutionDays.Add((decimal)(completedDate.Date - originalDate.ToDateTime(TimeOnly.MinValue)).TotalDays);
+            }
+        }
+
+        return new DashboardMetricResult(
+            workOrders.Count,
+            workOrders.Count(workOrder =>
+            {
+                var status = workOrder.LifecycleStatus
+                    ?? LifecycleStatusMapper.ParseLifecycleStatus(workOrder.LegacyStatus);
+                return status is not LifecycleStatus.Completed and not LifecycleStatus.Canceled;
+            }),
+            workOrders.Count(workOrder => string.IsNullOrWhiteSpace(workOrder.AssignTo)),
+            workOrders.Count(workOrder =>
+                (workOrder.LifecycleStatus ?? LifecycleStatusMapper.ParseLifecycleStatus(workOrder.LegacyStatus))
+                == LifecycleStatus.Completed),
+            breakdown,
+            dueCount,
+            completedDueCount,
+            dueCount == 0 ? 0 : Math.Round((decimal)completedDueCount / dueCount * 100, 2),
+            resolutionDays.Count == 0 ? null : Math.Round(resolutionDays.Average(), 2));
+    }
+
+    private static bool IsPastDue(
+        DashboardWorkOrder workOrder,
+        LifecycleStatus? status,
+        DateOnly today)
+        => workOrder.ScheduledDate is DateTime scheduled
+            && DateOnly.FromDateTime(scheduled.Date) < today
+            && status is not LifecycleStatus.Completed and not LifecycleStatus.Canceled;
+
+    private static void AddBreakdownCount(
+        DashboardBreakdownDTO breakdown,
+        WorkOrderType? type,
+        bool pastDue)
+    {
+        if (pastDue)
+        {
+            breakdown.Overdue++;
+            return;
+        }
+
+        switch (type)
+        {
+            case WorkOrderType.PM:
+                breakdown.PM++;
+                break;
+            case WorkOrderType.Emergency:
+                breakdown.Emergency++;
+                break;
+            case WorkOrderType.Reactive:
+                breakdown.Reactive++;
+                break;
+            default:
+                breakdown.Other++;
+                break;
+        }
+    }
+}
+
+public sealed record DashboardMetricResult(
+    int Total,
+    int Open,
+    int NotDispatched,
+    int Completed,
+    DashboardBreakdownDTO Breakdown,
+    int DueCount,
+    int CompletedDueCount,
+    decimal CompletionRate,
+    decimal? AverageResolutionDays);

SeaHaven.Services/Helpers/DashboardRegions.cs

@@ -0,0 +1,84 @@
+using SeaHaven.DataServices.Interfaces;
+
+namespace SeaHaven.Services.Helpers;
+
+public static class DashboardRegions
+{
+    public static readonly IReadOnlyList<string> Names =
+        ["East", "Central", "West", "California", "Unmapped/Other"];
+
+    public static string Resolve(string? state)
+    {
+        if (string.IsNullOrWhiteSpace(state))
+            return "Unmapped/Other";
+
+        return StateToRegion.TryGetValue(state.Trim().ToUpperInvariant(), out var region)
+            ? region
+            : "Unmapped/Other";
+    }
+
+    public static IReadOnlyDictionary<string, int> Count(
+        IReadOnlyList<DashboardWorkOrder> workOrders)
+    {
+        var counts = Names.ToDictionary(name => name, _ => 0, StringComparer.Ordinal);
+        foreach (var workOrder in workOrders)
+            counts[Resolve(workOrder.LocationState)]++;
+
+        return counts;
+    }
+
+    private static readonly IReadOnlyDictionary<string, string> StateToRegion =
+        new Dictionary<string, string>(StringComparer.Ordinal)
+        {
+            ["CT"] = "East",
+            ["DE"] = "East",
+            ["GA"] = "East",
+            ["ME"] = "East",
+            ["MD"] = "East",
+            ["MA"] = "East",
+            ["NH"] = "East",
+            ["NJ"] = "East",
+            ["NY"] = "East",
+            ["NC"] = "East",
+            ["PA"] = "East",
+            ["RI"] = "East",
+            ["SC"] = "East",
+            ["VT"] = "East",
+            ["VA"] = "East",
+            ["WV"] = "East",
+            ["AL"] = "Central",
+            ["AR"] = "Central",
+            ["FL"] = "Central",
+            ["IL"] = "Central",
+            ["IN"] = "Central",
+            ["IA"] = "Central",
+            ["KS"] = "Central",
+            ["KY"] = "Central",
+            ["LA"] = "Central",
+            ["MI"] = "Central",
+            ["MN"] = "Central",
+            ["MS"] = "Central",
+            ["MO"] = "Central",
+            ["NE"] = "Central",
+            ["ND"] = "Central",
+            ["OH"] = "Central",
+            ["OK"] = "Central",
+            ["SD"] = "Central",
+            ["TN"] = "Central",
+            ["WI"] = "Central",
+            ["AK"] = "West",
+            ["AZ"] = "West",
+            ["CO"] = "West",
+            ["HI"] = "West",
+            ["ID"] = "West",
+            ["MT"] = "West",
+            ["NV"] = "West",
+            ["NM"] = "West",
+            ["OR"] = "West",
+            ["TX"] = "West",
+            ["UT"] = "West",
+            ["WA"] = "West",
+            ["WY"] = "West",
+            ["CA"] = "California"
+        };
+}

SeaHaven.Services/Implementation/DashboardService.cs

@@ -1,5 +1,10 @@
+using System.Globalization;
+using System.Security.Claims;
+using Data.SeaHavenIndustries.Enums;
 using SeaHaven.DataServices.Interfaces;
 using SeaHaven.Services.DTOs;
+using SeaHaven.Services.Exceptions;
+using SeaHaven.Services.Helpers;
 using SeaHaven.Services.Interfaces;
 
 namespace SeaHaven.Services.Implementation
@@ -7,22 +12,388 @@ namespace SeaHaven.Services.Implementation
     public class DashboardService : IDashboardService
     {
         private readonly IDashboardDataService _dataService;
+        private readonly IWorkOrderAccountResolver _accountResolver;
 
-        public DashboardService(IDashboardDataService dataService)
+        public DashboardService(
+            IDashboardDataService dataService,
+            IWorkOrderAccountResolver accountResolver)
         {
             _dataService = dataService;
+            _accountResolver = accountResolver;
         }
 
-        public async Task<DashboardStatsDTO> GetStatsAsync(CancellationToken cancellationToken)
+        public async Task<DashboardStatsDTO> GetStatsAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken)
         {
-            var counts = await _dataService.GetWorkOrderCountsAsync(cancellationToken);
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var dispatcherId = user.IsInRole("Dispatcher")
+                ? user.FindFirstValue(ClaimTypes.NameIdentifier)
+                : null;
+            if (user.IsInRole("Dispatcher") && string.IsNullOrWhiteSpace(dispatcherId))
+                throw new WorkOrderBoardValidationException("Forbidden", "Dispatcher identity is required.");
+
+            var counts = await _dataService.GetWorkOrderCountsAsync(accountId, cancellationToken);
+            var workOrders = await _dataService.GetDashboardWorkOrdersAsync(
+                accountId,
+                dispatcherId,
+                query.DateFrom,
+                query.DateTo,
+                cancellationToken);
+            var metrics = DashboardMetrics.Calculate(workOrders, DashboardBusinessTime.Today());
+
+            var useMetrics = query.DateFrom.HasValue && query.DateTo.HasValue || dispatcherId is not null;
 
             return new DashboardStatsDTO
             {
-                Total = counts.Total,
-                Open = counts.Open,
-                NotDispatched = counts.NotDispatched,
-                Completed = counts.Completed
+                Total = useMetrics ? metrics.Total : counts.Total,
+                Open = useMetrics ? metrics.Open : counts.Open,
+                NotDispatched = useMetrics ? metrics.NotDispatched : counts.NotDispatched,
+                Completed = useMetrics ? metrics.Completed : counts.Completed,
+                Breakdown = metrics.Breakdown,
+                DueCount = metrics.DueCount,
+                CompletedDueCount = metrics.CompletedDueCount,
+                CompletionRate = metrics.CompletionRate,
+                AverageResolutionDays = metrics.AverageResolutionDays
+            };
+        }
+
+        public async Task<DashboardWorkloadResponseDTO> GetWorkloadAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            int page,
+            CancellationToken cancellationToken)
+        {
+            if (page < 1)
+                throw new ArgumentOutOfRangeException(nameof(page));
+
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var dispatcherId = user.IsInRole("Dispatcher")
+                ? user.FindFirstValue(ClaimTypes.NameIdentifier)
+                : null;
+            if (user.IsInRole("Dispatcher") && string.IsNullOrWhiteSpace(dispatcherId))
+                throw new WorkOrderBoardValidationException("Forbidden", "Dispatcher identity is required.");
+
+            var rows = await _dataService.GetDispatcherWorkloadAsync(
+                accountId,
+                dispatcherId,
+                query.DateFrom,
+                query.DateTo,
+                cancellationToken);
+            var orderedRows = rows
+                .OrderByDescending(row => row.OpenCount)
+                .ThenBy(row => row.DispatcherName, StringComparer.OrdinalIgnoreCase)
+                .ThenBy(row => row.DispatcherId, StringComparer.Ordinal)
+                .ToList();
+            const int pageSize = 10;
+
+            return new DashboardWorkloadResponseDTO
+            {
+                Items = orderedRows.Skip((page - 1) * pageSize).Take(pageSize)
+                    .Select(row => new DashboardWorkloadRowDTO
+                    {
+                        DispatcherId = row.DispatcherId,
+                        DispatcherName = row.DispatcherName,
+                        Color = row.Color,
+                        TotalCount = row.TotalCount,
+                        OpenCount = row.OpenCount
+                    }).ToList(),
+                Page = page,
+                PageSize = pageSize,
+                TotalDispatchers = orderedRows.Count
+            };
+        }
+
+        public async Task<DashboardPerformanceResponseDTO> GetPerformanceAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            int page,
+            CancellationToken cancellationToken)
+        {
+            if (page < 1)
+                throw new ArgumentOutOfRangeException(nameof(page));
+
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var dispatcherId = user.IsInRole("Dispatcher")
+                ? user.FindFirstValue(ClaimTypes.NameIdentifier)
+                : null;
+            if (user.IsInRole("Dispatcher") && string.IsNullOrWhiteSpace(dispatcherId))
+                throw new WorkOrderBoardValidationException("Forbidden", "Dispatcher identity is required.");
+
+            var directory = await _dataService.GetDispatcherWorkloadAsync(
+                accountId, dispatcherId, query.DateFrom, query.DateTo, cancellationToken);
+            var workOrders = await _dataService.GetDashboardWorkOrdersAsync(
+                accountId, dispatcherId, query.DateFrom, query.DateTo, cancellationToken);
+            var today = DashboardBusinessTime.Today();
+            var rows = directory.Select(dispatcher =>
+            {
+                var metrics = DashboardMetrics.Calculate(
+                    workOrders.Where(workOrder => workOrder.AssignTo == dispatcher.DispatcherId).ToList(),
+                    today);
+                return new DashboardPerformanceRowDTO
+                {
+                    DispatcherId = dispatcher.DispatcherId,
+                    DispatcherName = dispatcher.DispatcherName,
+                    Color = dispatcher.Color,
+                    CompletionRate = metrics.CompletionRate,
+                    AverageResolutionDays = metrics.AverageResolutionDays
+                };
+            })
+                .OrderByDescending(row => row.CompletionRate)
+                .ThenBy(row => row.DispatcherName, StringComparer.OrdinalIgnoreCase)
+                .ThenBy(row => row.DispatcherId, StringComparer.Ordinal)
+                .ToList();
+            const int pageSize = 10;
+
+            return new DashboardPerformanceResponseDTO
+            {
+                Items = rows.Skip((page - 1) * pageSize).Take(pageSize).ToList(),
+                Page = page,
+                PageSize = pageSize,
+                TotalDispatchers = rows.Count
+            };
+        }
+
+        public async Task<DashboardRegionResponseDTO> GetRegionsAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken)
+        {
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var dispatcherId = user.IsInRole("Dispatcher")
+                ? user.FindFirstValue(ClaimTypes.NameIdentifier)
+                : null;
+            if (user.IsInRole("Dispatcher") && string.IsNullOrWhiteSpace(dispatcherId))
+                throw new WorkOrderBoardValidationException("Forbidden", "Dispatcher identity is required.");
+
+            var workOrders = await _dataService.GetDashboardWorkOrdersAsync(
+                accountId, dispatcherId, query.DateFrom, query.DateTo, cancellationToken);
+            var counts = DashboardRegions.Count(workOrders);
+            return new DashboardRegionResponseDTO
+            {
+                Items = DashboardRegions.Names
+                    .Select(region => new DashboardRegionRowDTO
+                    {
+                        Region = region,
+                        WorkOrderCount = counts[region]
+                    })
+                    .ToList()
+            };
+        }
+
+        public async Task<DashboardTrendResponseDTO> GetTrendAsync(
+            ClaimsPrincipal user,
+            DashboardTrendQueryDTO query,
+            CancellationToken cancellationToken)
+        {
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var dispatcherId = user.IsInRole("Dispatcher")
+                ? user.FindFirstValue(ClaimTypes.NameIdentifier)
+                : null;
+            if (user.IsInRole("Dispatcher") && string.IsNullOrWhiteSpace(dispatcherId))
+                throw new WorkOrderBoardValidationException("Forbidden", "Dispatcher identity is required.");
+
+            var today = DashboardBusinessTime.Today();
+            var (windowFrom, windowTo, granularity) = ResolveTrendWindow(query, today);
+            var firstBucketStart = BucketStart(windowFrom, granularity);
+            var lastBucketStart = BucketStart(windowTo, granularity);
+            var lastBucketEnd = BucketEnd(lastBucketStart, granularity);
+
+            var workOrders = await _dataService.GetDashboardWorkOrdersAsync(
+                accountId,
+                dispatcherId,
+                firstBucketStart.AddDays(-1),
+                lastBucketEnd.AddDays(1),
+                cancellationToken);
+
+            var buckets = BuildBucketStarts(firstBucketStart, windowTo, granularity)
+                .Select(start => new TrendBucket(start))
+                .ToList();
+            var bucketStarts = buckets.Select(bucket => bucket.Start).ToList();
+
+            foreach (var workOrder in workOrders)
+            {
+                if (workOrder.ScheduledDate is not DateTime scheduled)
+                    continue;
+                var businessDate = DateOnly.FromDateTime(scheduled.Date);
+                if (businessDate < firstBucketStart || businessDate > lastBucketEnd)
+                    continue;
+                var bucket = buckets[LocateBucket(bucketStarts, businessDate)];
+                var status = workOrder.LifecycleStatus
+                    ?? LifecycleStatusMapper.ParseLifecycleStatus(workOrder.LegacyStatus);
+                bucket.Total++;
+                if (status == LifecycleStatus.Completed)
+                    bucket.Completed++;
+                else if (status == LifecycleStatus.Canceled)
+                    bucket.Canceled++;
+                else
+                {
+                    bucket.Open++;
+                    if (businessDate < today)
+                        bucket.Overdue++;
+                }
+            }
+
+            DateOnly? currentStart = today < firstBucketStart || today > lastBucketEnd
+                ? null
+                : buckets[LocateBucket(bucketStarts, today)].Start;
+
+            return new DashboardTrendResponseDTO
+            {
+                Granularity = granularity,
+                Today = today,
+                Buckets = buckets.Select(bucket => new DashboardTrendBucketDTO
+                {
+                    Date = bucket.Start,
+                    Label = bucket.Start.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture),
+                    Total = bucket.Total,
+                    Open = bucket.Open,
+                    Completed = bucket.Completed,
+                    Canceled = bucket.Canceled,
+                    Overdue = bucket.Overdue,
+                    IsCurrent = bucket.Start == currentStart
+                }).ToList()
+            };
+        }
+
+        private static (DateOnly From, DateOnly To, string Granularity) ResolveTrendWindow(
+            DashboardTrendQueryDTO query,
+            DateOnly today)
+        {
+            if (query.Year is int year)
+            {
+                if (year < DateOnly.MinValue.Year || year > DateOnly.MaxValue.Year)
+                    throw new ArgumentOutOfRangeException(nameof(query));
+                return (new DateOnly(year, 1, 1), new DateOnly(year, 12, 31), "month");
+            }
+
+            if (string.Equals(query.Range, ThreeMonthRange, StringComparison.OrdinalIgnoreCase))
+            {
+                var weeklyTo = query.DateTo ?? today;
+                var weeklyFrom = query.DateFrom ?? weeklyTo.AddMonths(-3).AddDays(1);
+                if (weeklyFrom > weeklyTo)
+                    throw new ArgumentOutOfRangeException(nameof(query));
+                return (weeklyFrom, weeklyTo, "week");
+            }
+
+            if (query.DateFrom is DateOnly dailyFrom && query.DateTo is DateOnly dailyTo)
+            {
+                if (dailyFrom > dailyTo)
+                    throw new ArgumentOutOfRangeException(nameof(query));
+                return (dailyFrom, dailyTo, "day");
+            }
+
+            if (query.DateFrom.HasValue != query.DateTo.HasValue)
+                throw new ArgumentOutOfRangeException(nameof(query));
+
+            return (today, today, "day");
+        }
+
+        private static List<DateOnly> BuildBucketStarts(DateOnly from, DateOnly to, string granularity)
+        {
+            var starts = new List<DateOnly>();
+            var current = BucketStart(from, granularity);
+            while (current <= to)
+            {
+                starts.Add(current);
+                current = granularity switch
+                {
+                    "week" => current.AddDays(7),
+                    "month" => current.AddMonths(1),
+                    _ => current.AddDays(1)
+                };
+            }
+            return starts;
+        }
+
+        private static DateOnly BucketStart(DateOnly date, string granularity) => granularity switch
+        {
+            "week" => date.AddDays(-(((int)date.DayOfWeek + 6) % 7)),
+            "month" => new DateOnly(date.Year, date.Month, 1),
+            _ => date
+        };
+
+        private static DateOnly BucketEnd(DateOnly start, string granularity) => granularity switch
+        {
+            "week" => start.AddDays(6),
+            "month" => start.AddMonths(1).AddDays(-1),
+            _ => start
+        };
+
+        private static int LocateBucket(List<DateOnly> starts, DateOnly date)
+        {
+            var low = 0;
+            var high = starts.Count - 1;
+            while (low < high)
+            {
+                var middle = (low + high + 1) / 2;
+                if (starts[middle] <= date)
+                    low = middle;
+                else
+                    high = middle - 1;
+            }
+            return low;
+        }
+
+        private const string ThreeMonthRange = "3m";
+
+        private sealed class TrendBucket(DateOnly start)
+        {
+            public DateOnly Start { get; } = start;
+            public int Total { get; set; }
+            public int Open { get; set; }
+            public int Completed { get; set; }
+            public int Canceled { get; set; }
+            public int Overdue { get; set; }
+        }
+
+        public async Task<DashboardVendorInsightsResponseDTO> GetVendorInsightsAsync(
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken)
+        {
+            var accountId = _accountResolver.ResolveAccountFilter(user);
+            var workOrders = await _dataService.GetDashboardWorkOrdersAsync(
+                accountId, null, null, null, cancellationToken);
+            var activeVendorOrders = workOrders
+                .Where(workOrder => workOrder.VendorCompanyId.HasValue
+                    && workOrder.VendorIsActive
+                    && !workOrder.VendorCompanyIsDeleted)
+                .ToList();
+            var today = DashboardBusinessTime.Today();
+            var rows = activeVendorOrders
+                .GroupBy(workOrder => new
+                {
+                    Id = workOrder.VendorCompanyId!.Value,
+                    Name = workOrder.VendorCompanyName ?? string.Empty
+                })
+                .Select(group =>
+                {
+                    var orders = group.ToList();
+                    var metrics = DashboardMetrics.Calculate(orders, today);
+                    var rescheduled = orders.Count(order => order.RescheduleCount >= 1);
+                    return new DashboardVendorInsightsRowDTO
+                    {
+                        VendorCompanyId = group.Key.Id,
+                        VendorCompanyName = group.Key.Name,
+                        CompletionRate = metrics.CompletionRate,
+                        RescheduleRate = Math.Round((decimal)rescheduled / orders.Count * 100, 2),
+                        AverageResolutionDays = metrics.AverageResolutionDays,
+                        TotalJobs = orders.Count
+                    };
+                })
+                .OrderByDescending(row => row.CompletionRate)
+                .ThenBy(row => row.VendorCompanyName, StringComparer.OrdinalIgnoreCase)
+                .ThenBy(row => row.VendorCompanyId)
+                .ToList();
+            const int pageSize = 10;
+
+            return new DashboardVendorInsightsResponseDTO
+            {
+                Items = rows.Take(pageSize).ToList(),
+                Page = 1,
+                PageSize = pageSize,
+                TotalVendors = rows.Count
             };
         }
     }

SeaHaven.Services/Interfaces/IDashboardService.cs

@@ -1,9 +1,39 @@
+using System.Security.Claims;
 using SeaHaven.Services.DTOs;
 
 namespace SeaHaven.Services.Interfaces
 {
     public interface IDashboardService
     {
-        Task<DashboardStatsDTO> GetStatsAsync(CancellationToken cancellationToken);
+        Task<DashboardStatsDTO> GetStatsAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken);
+
+        Task<DashboardWorkloadResponseDTO> GetWorkloadAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            int page,
+            CancellationToken cancellationToken);
+
+        Task<DashboardPerformanceResponseDTO> GetPerformanceAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            int page,
+            CancellationToken cancellationToken);
+
+        Task<DashboardRegionResponseDTO> GetRegionsAsync(
+            ClaimsPrincipal user,
+            DashboardStatsQueryDTO query,
+            CancellationToken cancellationToken);
+
+        Task<DashboardTrendResponseDTO> GetTrendAsync(
+            ClaimsPrincipal user,
+            DashboardTrendQueryDTO query,
+            CancellationToken cancellationToken);
+
+        Task<DashboardVendorInsightsResponseDTO> GetVendorInsightsAsync(
+            ClaimsPrincipal user,
+            CancellationToken cancellationToken);
     }
 }