diff --git a/Api.SeaHavenIndustries.Tests/WorkOrderControllerSearchTests.cs b/Api.SeaHavenIndustries.Tests/WorkOrderControllerSearchTests.cs
index 10ac872..c2a11aa 100644
--- a/Api.SeaHavenIndustries.Tests/WorkOrderControllerSearchTests.cs
+++ b/Api.SeaHavenIndustries.Tests/WorkOrderControllerSearchTests.cs
@@ -4,6 +4,7 @@ using FluentAssertions;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using Moq;
+using SeaHaven.DataServices.Implementation;
 using SeaHaven.DataServices.Interfaces;
 using SeaHaven.Services.DTOs;
 using SeaHaven.Services.Helpers;
@@ -60,4 +61,17 @@ public class WorkOrderControllerSearchTests
         body.Status.Should().Be("Error");
         body.Message.Should().Contain("dateFrom");
     }
+
+    [Fact]
+    public async Task GetBoard_WhenWeekEndBeforeWeekStart_ReturnsBadRequest()
+    {
+        var controller = NewController(Mock.Of<IWorkOrderAdvancedSearchService>());
+
+        var result = await controller.GetBoard(
+            new DateOnly(2026, 6, 22),
+            new DateOnly(2026, 6, 15));
+
+        var badRequest = result.Should().BeOfType<BadRequestObjectResult>().Subject;
+        badRequest.Value.Should().BeOfType<string>().Which.Should().Contain("weekEnd");
+    }
 }
diff --git a/Api.SeaHavenIndustries/Controllers/WorkOrderBoardController.cs b/Api.SeaHavenIndustries/Controllers/WorkOrderBoardController.cs
index 204b742..85f6698 100644
--- a/Api.SeaHavenIndustries/Controllers/WorkOrderBoardController.cs
+++ b/Api.SeaHavenIndustries/Controllers/WorkOrderBoardController.cs
@@ -53,6 +53,7 @@ namespace Api.SeaHavenIndustries.Controllers
             [FromQuery] List<string>? dispatchers = null,
             [FromQuery] bool myWorkOrders = false,
             [FromQuery] List<WorkOrderType>? types = null,
+            [FromQuery] bool overdue = false,
             [FromQuery] string? search = null)
         {
             var resolvedWeekEnd = weekEnd ?? weekStart.AddDays(4);
@@ -70,6 +71,7 @@ namespace Api.SeaHavenIndustries.Controllers
                     Dispatchers = dispatchers,
                     MyWorkOrders = myWorkOrders,
                     Types = types,
+                    Overdue = overdue,
                     Search = search
                 };
 
diff --git a/Data.SeaHavenIndustries/Auth/ApplicationDbContext.cs b/Data.SeaHavenIndustries/Auth/ApplicationDbContext.cs
index 48c34fe..2e214bb 100644
--- a/Data.SeaHavenIndustries/Auth/ApplicationDbContext.cs
+++ b/Data.SeaHavenIndustries/Auth/ApplicationDbContext.cs
@@ -206,7 +206,7 @@ namespace Data.SeaHavenIndustries
 
             return bytes;
         }
-   
+
     }
     public class ApplicationUser : IdentityUser
     {
@@ -222,8 +222,8 @@ namespace Data.SeaHavenIndustries
         public string? Initials { get; set; }
         public string? Color { get; set; }
         public int? Type { get; set; } // 1 for users 0 for admin
-       public ICollection<Template>? Templates { get; set; }
-       public ICollection<WorkOrder>? WorkOrders { get; set; }
+        public ICollection<Template>? Templates { get; set; }
+        public ICollection<WorkOrder>? WorkOrders { get; set; }
     }
     public class FullAuditEntity
     {
diff --git a/SeaHaven.DataServices/Helpers/WorkOrderBoardQueryFilters.cs b/SeaHaven.DataServices/Helpers/WorkOrderBoardQueryFilters.cs
index ffe6ef6..15d022f 100644
--- a/SeaHaven.DataServices/Helpers/WorkOrderBoardQueryFilters.cs
+++ b/SeaHaven.DataServices/Helpers/WorkOrderBoardQueryFilters.cs
@@ -42,16 +42,53 @@ namespace SeaHaven.DataServices.Helpers
             return query.Where(w => w.AssignTo != null && ids.Contains(w.AssignTo));
         }
 
-        public static IQueryable<WorkOrder> ApplyTypeFilter(
+        /// <summary>
+        /// Filters by real <paramref name="types"/> (including <see cref="WorkOrderType.Other"/>)
+        /// and/or past-due rows when <paramref name="overdue"/> is true.
+        /// Types and overdue are combined with OR when both are present.
+        /// </summary>
+        public static IQueryable<WorkOrder> ApplyTypeAndOverdueFilter(
             IQueryable<WorkOrder> query,
-            IReadOnlyList<WorkOrderType>? types)
+            IReadOnlyList<WorkOrderType>? types,
+            bool overdue = false,
+            DateTime? utcNow = null)
         {
-            if (types == null || types.Count == 0)
+            var hasTypes = types != null && types.Count > 0;
+            if (!hasTypes && !overdue)
                 return query;
 
-            return query.Where(w => w.WorkOrderType != null && types.Contains(w.WorkOrderType.Value));
+            var today = (utcNow ?? DateTime.UtcNow).Date;
+            var typeFilters = hasTypes ? types!.ToList() : new List<WorkOrderType>();
+
+            // Keep past-due predicate inline — EF cannot translate local method calls.
+            if (overdue && !hasTypes)
+            {
+                return query.Where(w =>
+                    w.ScheduledDate != null
+                    && w.ScheduledDate.Value.Date < today
+                    && w.LifecycleStatus != LifecycleStatus.Completed
+                    && w.LifecycleStatus != LifecycleStatus.Canceled);
+            }
+
+            if (overdue)
+            {
+                return query.Where(w =>
+                    (w.ScheduledDate != null
+                     && w.ScheduledDate.Value.Date < today
+                     && w.LifecycleStatus != LifecycleStatus.Completed
+                     && w.LifecycleStatus != LifecycleStatus.Canceled)
+                    || (w.WorkOrderType != null && typeFilters.Contains(w.WorkOrderType.Value)));
+            }
+
+            return query.Where(w => w.WorkOrderType != null && typeFilters.Contains(w.WorkOrderType.Value));
         }
 
+        public static IQueryable<WorkOrder> ApplyTypeFilter(
+            IQueryable<WorkOrder> query,
+            IReadOnlyList<WorkOrderType>? types,
+            bool overdue = false)
+            => ApplyTypeAndOverdueFilter(query, types, overdue);
+
         #region Phase 2 filter helpers (not wired in Phase 1 board API)
 
         public static IQueryable<WorkOrder> ApplySiteFilter(
@@ -139,7 +176,10 @@ namespace SeaHaven.DataServices.Helpers
                 || (w.ScheduleWeekOnly == true
                     && w.TargetWeek != null
                     && w.TargetWeek >= dateFrom
-                    && w.TargetWeek <= dateTo));
+                    && w.TargetWeek <= dateTo)
+                || (w.ScheduledDate == null
+                    && w.LifecycleStatus != LifecycleStatus.Completed
+                    && w.LifecycleStatus != LifecycleStatus.Canceled));
         }
 
         #endregion
diff --git a/SeaHaven.DataServices/Helpers/WorkOrderBoardSearchFilter.cs b/SeaHaven.DataServices/Helpers/WorkOrderBoardSearchFilter.cs
index eac12ba..d6cf28d 100644
--- a/SeaHaven.DataServices/Helpers/WorkOrderBoardSearchFilter.cs
+++ b/SeaHaven.DataServices/Helpers/WorkOrderBoardSearchFilter.cs
@@ -1,3 +1,5 @@
+using System.Globalization;
+using System.Text.RegularExpressions;
 using Data.SeaHavenIndustries;
 using Data.SeaHavenIndustries.Enums;
 
@@ -5,6 +7,10 @@ namespace SeaHaven.DataServices.Helpers
 {
     public static class WorkOrderBoardSearchFilter
     {
+        private static readonly Regex PartialDatePattern = new(
+            @"^\d{1,2}/\d{1,2}$",
+            RegexOptions.Compiled | RegexOptions.CultureInvariant);
+
         public static string? NormalizeSearch(string? search)
         {
             if (string.IsNullOrWhiteSpace(search))
@@ -21,10 +27,23 @@ namespace SeaHaven.DataServices.Helpers
                 return query;
 
             var s = normalized.ToLower();
+            var today = DateTime.UtcNow.Date;
+            var exactDate = TryParseExactDate(normalized);
+            var hasExactDate = exactDate.HasValue;
+            var exactDateValue = exactDate?.Date ?? default;
+
+            var partialMonthDay = TryParsePartialMonthDay(normalized);
+            var hasPartialMonthDay = partialMonthDay.HasValue;
+            var partialMonth = partialMonthDay?.Month ?? 0;
+            var partialDay = partialMonthDay?.Day ?? 0;
+
+            // Keep predicates inline — EF Core cannot translate local method calls.
             return query.Where(w =>
                 (w.SiteCode ?? "").ToLower().Contains(s)
                 || (w.InternalWONumber ?? "").ToLower().Contains(s)
                 || (w.WorkerOrderNumber ?? "").ToLower().Contains(s)
+                || (w.WorkerOrderTitle ?? "").ToLower().Contains(s)
+                || (w.Description ?? "").ToLower().Contains(s)
                 || (w.Locations != null && (w.Locations.Name ?? "").ToLower().Contains(s))
                 || (w.AssignToUser != null && ((w.AssignToUser.FirstName ?? "") + " " + (w.AssignToUser.LastName ?? "")).ToLower().Contains(s))
                 || (w.Trade ?? "").ToLower().Contains(s)
@@ -32,6 +51,19 @@ namespace SeaHaven.DataServices.Helpers
                 || (w.PrimaryDispatch != null && w.PrimaryDispatch.Vendor != null && (w.PrimaryDispatch.Vendor.CompanyName ?? "").ToLower().Contains(s))
                 || (w.PrimaryDispatch != null && w.PrimaryDispatch.Vendor != null && (w.PrimaryDispatch.Vendor.ContactName ?? "").ToLower().Contains(s))
                 || (w.Status ?? "").ToLower().Contains(s)
+                || (w.WorkOrderType == WorkOrderType.PO && "po".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.PM && "pm".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.Emergency && "emergency".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.Project && "project".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.Inspection && "inspection".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.Reactive && "reactive".Contains(s))
+                || (w.WorkOrderType == WorkOrderType.AddOn && ("add-on".Contains(s) || "addon".Contains(s)))
+                || (w.WorkOrderType == WorkOrderType.Other && "other".Contains(s))
+                || ("overdue".Contains(s)
+                    && w.ScheduledDate != null
+                    && w.ScheduledDate.Value.Date < today
+                    && w.LifecycleStatus != LifecycleStatus.Completed
+                    && w.LifecycleStatus != LifecycleStatus.Canceled)
                 || (w.LifecycleStatus == LifecycleStatus.Incomplete && "incomplete".Contains(s))
                 || (w.LifecycleStatus == LifecycleStatus.Pending && ("pending".Contains(s) || "on hold".Contains(s) || "onhold".Contains(s)))
                 || (w.LifecycleStatus == LifecycleStatus.Scheduled && "scheduled".Contains(s))
@@ -41,7 +73,61 @@ namespace SeaHaven.DataServices.Helpers
                 || (w.LifecycleStatus == LifecycleStatus.Completed && ("completed".Contains(s) || "complete".Contains(s) || "done".Contains(s) || "closed".Contains(s)))
                 || (w.LifecycleStatus == LifecycleStatus.Rescheduled && "rescheduled".Contains(s))
                 || (w.LifecycleStatus == LifecycleStatus.Canceled && ("canceled".Contains(s) || "cancelled".Contains(s)))
-                || (w.LifecycleStatus == LifecycleStatus.PendingQuote && ("pending quote".Contains(s) || "pendingquote".Contains(s) || "pending approval".Contains(s) || "pendingapproval".Contains(s))));
+                || (w.LifecycleStatus == LifecycleStatus.PendingQuote && ("pending quote".Contains(s) || "pendingquote".Contains(s) || "pending approval".Contains(s) || "pendingapproval".Contains(s)))
+                || (hasExactDate
+                    && ((w.ScheduledDate != null && w.ScheduledDate.Value.Date == exactDateValue)
+                        || (w.DueDate != null && w.DueDate.Value.Date == exactDateValue)))
+                || (hasPartialMonthDay
+                    && ((w.ScheduledDate != null
+                         && w.ScheduledDate.Value.Month == partialMonth
+                         && w.ScheduledDate.Value.Day == partialDay)
+                        || (w.DueDate != null
+                            && w.DueDate.Value.Month == partialMonth
+                            && w.DueDate.Value.Day == partialDay))));
+        }
+
+        internal static DateTime? TryParseExactDate(string search)
+        {
+            if (PartialDatePattern.IsMatch(search))
+                return null;
+
+            var formats = new[]
+            {
+                "yyyy-MM-dd",
+                "MM/dd/yyyy",
+                "M/d/yyyy",
+                "MM/dd/yy",
+                "M/d/yy"
+            };
+
+            if (DateTime.TryParseExact(search, formats, CultureInfo.InvariantCulture, DateTimeStyles.None, out var parsed))
+                return parsed.Date;
+
+            if (DateTime.TryParse(search, CultureInfo.InvariantCulture, DateTimeStyles.None, out parsed))
+                return parsed.Date;
+
+            return null;
+        }
+
+        internal static (int Month, int Day)? TryParsePartialMonthDay(string search)
+        {
+            if (!PartialDatePattern.IsMatch(search))
+                return null;
+
+            var parts = search.Split('/');
+            if (parts.Length != 2)
+                return null;
+
+            if (!int.TryParse(parts[0], NumberStyles.None, CultureInfo.InvariantCulture, out var month))
+                return null;
+
+            if (!int.TryParse(parts[1], NumberStyles.None, CultureInfo.InvariantCulture, out var day))
+                return null;
+
+            if (month is < 1 or > 12 || day is < 1 or > 31)
+                return null;
+
+            return (month, day);
         }
     }
 }
diff --git a/SeaHaven.DataServices/Implementation/WorkOrderAdvancedSearchDataService.cs b/SeaHaven.DataServices/Implementation/WorkOrderAdvancedSearchDataService.cs
index 556fe4f..ab995c7 100644
--- a/SeaHaven.DataServices/Implementation/WorkOrderAdvancedSearchDataService.cs
+++ b/SeaHaven.DataServices/Implementation/WorkOrderAdvancedSearchDataService.cs
@@ -19,7 +19,7 @@ namespace SeaHaven.DataServices.Implementation
             var baseQuery = WorkOrderBoardQueryFilters.ApplyBaseScope(_context.workOrders.AsNoTracking());
             baseQuery = WorkOrderBoardQueryFilters.ApplyDateRangeFilter(baseQuery, query.DateFrom, query.DateTo);
             baseQuery = WorkOrderBoardQueryFilters.ApplySiteFilter(baseQuery, query.Sites);
-            baseQuery = WorkOrderBoardQueryFilters.ApplyTypeFilter(baseQuery, query.Types);
+            baseQuery = WorkOrderBoardQueryFilters.ApplyTypeFilter(baseQuery, query.Types, query.Overdue);
             baseQuery = WorkOrderBoardQueryFilters.ApplyDispatcherFilter(
                 baseQuery, query.Dispatchers, query.MyWorkOrders, query.CurrentUserId);
             baseQuery = WorkOrderBoardQueryFilters.ApplyStatusFilter(baseQuery, query.Statuses);
@@ -35,7 +35,7 @@ namespace SeaHaven.DataServices.Implementation
 
             var sorted = ApplySort(baseQuery, query.SortBy, query.SortDir);
             var paged = sorted
-                .Skip((query.Page - 1) * query.PageSize)
+                .Skip(query.Page * query.PageSize)
                 .Take(query.PageSize);
 
             var rows = await WorkOrderBoardProjection.ProjectRowsAsync(paged, isUnscheduled: false);
diff --git a/SeaHaven.DataServices/Implementation/WorkOrderBoardDataService.cs b/SeaHaven.DataServices/Implementation/WorkOrderBoardDataService.cs
index 17e21b0..0695be4 100644
--- a/SeaHaven.DataServices/Implementation/WorkOrderBoardDataService.cs
+++ b/SeaHaven.DataServices/Implementation/WorkOrderBoardDataService.cs
@@ -23,7 +23,7 @@ namespace SeaHaven.DataServices.Implementation
             var baseQuery = WorkOrderBoardQueryFilters.ApplyBaseScope(_context.workOrders.AsNoTracking());
             baseQuery = WorkOrderBoardQueryFilters.ApplyDispatcherFilter(
                 baseQuery, query.Dispatchers, query.MyWorkOrders, query.CurrentUserId);
-            baseQuery = WorkOrderBoardQueryFilters.ApplyTypeFilter(baseQuery, query.Types);
+            baseQuery = WorkOrderBoardQueryFilters.ApplyTypeFilter(baseQuery, query.Types, query.Overdue);
 
             var scheduledBase = baseQuery.Where(w =>
                 (w.ScheduledDate != null
diff --git a/SeaHaven.DataServices/Interfaces/WorkOrderAdvancedSearchModels.cs b/SeaHaven.DataServices/Interfaces/WorkOrderAdvancedSearchModels.cs
index 0cede89..5dc30c7 100644
--- a/SeaHaven.DataServices/Interfaces/WorkOrderAdvancedSearchModels.cs
+++ b/SeaHaven.DataServices/Interfaces/WorkOrderAdvancedSearchModels.cs
@@ -9,6 +9,7 @@ namespace SeaHaven.DataServices.Interfaces
         DateOnly DateTo,
         IReadOnlyList<string>? Sites,
         IReadOnlyList<WorkOrderType>? Types,
+        bool Overdue,
         IReadOnlyList<string>? Dispatchers,
         IReadOnlyList<LifecycleStatus>? Statuses,
         IReadOnlyList<string>? PmTypes,
diff --git a/SeaHaven.DataServices/Interfaces/WorkOrderBoardModels.cs b/SeaHaven.DataServices/Interfaces/WorkOrderBoardModels.cs
index c46ff55..51ca0d7 100644
--- a/SeaHaven.DataServices/Interfaces/WorkOrderBoardModels.cs
+++ b/SeaHaven.DataServices/Interfaces/WorkOrderBoardModels.cs
@@ -8,6 +8,7 @@ namespace SeaHaven.DataServices.Interfaces
         IReadOnlyList<string>? Dispatchers,
         bool MyWorkOrders,
         IReadOnlyList<WorkOrderType>? Types,
+        bool Overdue,
         string? Search,
         string? CurrentUserId);
 
diff --git a/SeaHaven.Services.Tests/PagedResultTests.cs b/SeaHaven.Services.Tests/PagedResultTests.cs
index 911370e..6621180 100644
--- a/SeaHaven.Services.Tests/PagedResultTests.cs
+++ b/SeaHaven.Services.Tests/PagedResultTests.cs
@@ -8,8 +8,9 @@ public class PagedResultTests
 {
     [Theory]
     [InlineData(0, 10, 0)]
+    [InlineData(1, 10, 1)]
     [InlineData(10, 10, 1)]
-    [InlineData(25, 10, 3)]
+    [InlineData(11, 10, 2)]
     [InlineData(100, 25, 4)]
     public void TotalPages_IsCeilingOfCountOverPageSize(int totalCount, int pageSize, int expectedPages)
     {
@@ -19,16 +20,32 @@ public class PagedResultTests
     }
 
     [Fact]
-    public void HasPrevious_IsFalseOnFirstPage_TrueAfterward()
+    public void HasPrevious_IsFalseOnFirstPage_TrueAfterward_OneBased()
     {
         new PagedResult<string> { Page = 1, PageSize = 10, TotalCount = 30 }.HasPrevious.Should().BeFalse();
         new PagedResult<string> { Page = 2, PageSize = 10, TotalCount = 30 }.HasPrevious.Should().BeTrue();
     }
 
     [Fact]
-    public void HasNext_IsTrueBeforeLastPage_FalseOnLastPage()
+    public void HasNext_IsTrueBeforeLastPage_FalseOnLastPage_OneBased()
     {
         new PagedResult<string> { Page = 2, PageSize = 10, TotalCount = 30 }.HasNext.Should().BeTrue();
         new PagedResult<string> { Page = 3, PageSize = 10, TotalCount = 30 }.HasNext.Should().BeFalse();
     }
+
+    [Fact]
+    public void HasPrevious_And_HasNext_ZeroBased_WhenPageBaseIsZero()
+    {
+        var first = new PagedResult<string> { Page = 0, PageSize = 10, TotalCount = 30, PageBase = 0 };
+        first.HasPrevious.Should().BeFalse();
+        first.HasNext.Should().BeTrue();
+
+        var middle = new PagedResult<string> { Page = 1, PageSize = 10, TotalCount = 30, PageBase = 0 };
+        middle.HasPrevious.Should().BeTrue();
+        middle.HasNext.Should().BeTrue();
+
+        var last = new PagedResult<string> { Page = 2, PageSize = 10, TotalCount = 30, PageBase = 0 };
+        last.HasPrevious.Should().BeTrue();
+        last.HasNext.Should().BeFalse();
+    }
 }
diff --git a/SeaHaven.Services/DTOs/ContactDTOs.cs b/SeaHaven.Services/DTOs/ContactDTOs.cs
index 90cafc9..8710ecc 100644
--- a/SeaHaven.Services/DTOs/ContactDTOs.cs
+++ b/SeaHaven.Services/DTOs/ContactDTOs.cs
@@ -48,8 +48,17 @@ namespace SeaHaven.Services.DTOs
         public int TotalCount { get; set; }
         public int Page { get; set; }
         public int PageSize { get; set; }
-        public int TotalPages => (int)Math.Ceiling(TotalCount / (double)PageSize);
-        public bool HasPrevious => Page > 1;
-        public bool HasNext => Page < TotalPages;
+
+        /// <summary>
+        /// Page numbering base for <see cref="HasPrevious"/> / <see cref="HasNext"/>.
+        /// Default <c>1</c> (classic APIs). Work-order advanced search sets <c>0</c>.
+        /// </summary>
+        public int PageBase { get; set; } = 1;
+
+        public int TotalPages => PageSize <= 0 ? 0 : (int)Math.Ceiling(TotalCount / (double)PageSize);
+
+        public bool HasPrevious => PageBase <= 0 ? Page > 0 : Page > 1;
+
+        public bool HasNext => PageBase <= 0 ? Page + 1 < TotalPages : Page < TotalPages;
     }
 }
diff --git a/SeaHaven.Services/DTOs/WorkOrderBoardDTOs.cs b/SeaHaven.Services/DTOs/WorkOrderBoardDTOs.cs
index f0b13f9..adba573 100644
--- a/SeaHaven.Services/DTOs/WorkOrderBoardDTOs.cs
+++ b/SeaHaven.Services/DTOs/WorkOrderBoardDTOs.cs
@@ -10,6 +10,8 @@ namespace SeaHaven.Services.DTOs
         public List<string>? Dispatchers { get; set; }
         public bool MyWorkOrders { get; set; }
         public List<WorkOrderType>? Types { get; set; }
+        /// <summary>When true, include past-due (isPastDue) rows. Combined with Types via OR.</summary>
+        public bool Overdue { get; set; }
         public string? Search { get; set; }
     }
 
diff --git a/SeaHaven.Services/DTOs/WorkOrderBoardRequestDTOs.cs b/SeaHaven.Services/DTOs/WorkOrderBoardRequestDTOs.cs
index d93e123..eee8b53 100644
--- a/SeaHaven.Services/DTOs/WorkOrderBoardRequestDTOs.cs
+++ b/SeaHaven.Services/DTOs/WorkOrderBoardRequestDTOs.cs
@@ -43,7 +43,7 @@ namespace SeaHaven.Services.DTOs
     /// <summary>Advanced search / filter query for the board.</summary>
     public class WorkOrderAdvancedSearchQueryDto
     {
-        public int Page { get; set; } = 1;
+        public int Page { get; set; } = 0;
         public int PageSize { get; set; } = 50;
         public string? Search { get; set; }
         public WorkOrderAdvancedSearchDatePreset? DatePreset { get; set; }
@@ -51,6 +51,8 @@ namespace SeaHaven.Services.DTOs
         public DateOnly? DateTo { get; set; }
         public List<string>? Sites { get; set; }
         public List<WorkOrderType>? Types { get; set; }
+        /// <summary>When true, include past-due (isPastDue) rows. Combined with Types via OR.</summary>
+        public bool Overdue { get; set; }
         public List<string>? Dispatchers { get; set; }
         public List<LifecycleStatus>? Statuses { get; set; }
         public List<string>? PmTypes { get; set; }
diff --git a/SeaHaven.Services/Helpers/WorkOrderBoardSortFields.cs b/SeaHaven.Services/Helpers/WorkOrderBoardSortFields.cs
new file mode 100644
index 0000000..e2505a3
--- /dev/null
+++ b/SeaHaven.Services/Helpers/WorkOrderBoardSortFields.cs
@@ -0,0 +1,29 @@
+namespace SeaHaven.Services.Helpers
+{
+    public static class WorkOrderBoardSortFields
+    {
+        public static readonly IReadOnlySet<string> Allowed = new HashSet<string>(StringComparer.OrdinalIgnoreCase)
+        {
+            "scheduledDate",
+            "woNumber",
+            "dueDate"
+        };
+
+        public static string NormalizeOrThrow(string? sortBy)
+        {
+            var field = (sortBy ?? "scheduledDate").Trim();
+            if (!Allowed.Contains(field))
+            {
+                throw new ArgumentException(
+                    "sortBy must be one of: scheduledDate, woNumber, dueDate.");
+            }
+
+            return field.ToLowerInvariant() switch
+            {
+                "wonumber" => "woNumber",
+                "duedate" => "dueDate",
+                _ => "scheduledDate"
+            };
+        }
+    }
+}
diff --git a/SeaHaven.Services/Helpers/WorkOrderSearchDateRangeResolver.cs b/SeaHaven.Services/Helpers/WorkOrderSearchDateRangeResolver.cs
index d41df2f..48a8f48 100644
--- a/SeaHaven.Services/Helpers/WorkOrderSearchDateRangeResolver.cs
+++ b/SeaHaven.Services/Helpers/WorkOrderSearchDateRangeResolver.cs
@@ -56,19 +56,19 @@ namespace SeaHaven.Services.Helpers
         private static WorkOrderSearchDateRange ThisIsoWeek(DateOnly today)
         {
             var start = GetIsoWeekStart(today);
-            return new WorkOrderSearchDateRange(start, start.AddDays(6));
+            return new WorkOrderSearchDateRange(start, start.AddDays(4));
         }
 
         private static WorkOrderSearchDateRange LastIsoWeek(DateOnly today)
         {
             var start = GetIsoWeekStart(today).AddDays(-7);
-            return new WorkOrderSearchDateRange(start, start.AddDays(6));
+            return new WorkOrderSearchDateRange(start, start.AddDays(4));
         }
 
         private static WorkOrderSearchDateRange NextIsoWeek(DateOnly today)
         {
             var start = GetIsoWeekStart(today).AddDays(7);
-            return new WorkOrderSearchDateRange(start, start.AddDays(6));
+            return new WorkOrderSearchDateRange(start, start.AddDays(4));
         }
 
         private static WorkOrderSearchDateRange ThisMonth(DateOnly today)
diff --git a/SeaHaven.Services/Implementation/WorkOrderAdvancedSearchService.cs b/SeaHaven.Services/Implementation/WorkOrderAdvancedSearchService.cs
index 285ec9e..cb5dd22 100644
--- a/SeaHaven.Services/Implementation/WorkOrderAdvancedSearchService.cs
+++ b/SeaHaven.Services/Implementation/WorkOrderAdvancedSearchService.cs
@@ -8,7 +8,7 @@ namespace SeaHaven.Services.Implementation
 {
     public class WorkOrderAdvancedSearchService : IWorkOrderAdvancedSearchService
     {
-        private const int DefaultPageSize = 50;
+        private const int DefaultPageSize = 100;
         private const int MaxPageSize = 100;
 
         private readonly IWorkOrderAdvancedSearchDataService _searchDataService;
@@ -22,7 +22,7 @@ namespace SeaHaven.Services.Implementation
             WorkOrderAdvancedSearchQueryDto query,
             string? currentUserId)
         {
-            var page = query.Page < 1 ? 1 : query.Page;
+            var page = query.Page < 0 ? 0 : query.Page;
             var pageSize = query.PageSize < 1 ? DefaultPageSize : Math.Min(query.PageSize, MaxPageSize);
 
             var dateRange = WorkOrderSearchDateRangeResolver.Resolve(
@@ -30,12 +30,15 @@ namespace SeaHaven.Services.Implementation
                 query.DateFrom,
                 query.DateTo);
 
+            var sortBy = WorkOrderBoardSortFields.NormalizeOrThrow(query.SortBy);
+
             var dataQuery = new WorkOrderAdvancedSearchQuery(
                 WorkOrderBoardSearchFilter.NormalizeSearch(query.Search),
                 dateRange.From,
                 dateRange.To,
                 query.Sites,
                 query.Types,
+                query.Overdue,
                 query.Dispatchers,
                 query.Statuses,
                 query.PmTypes,
@@ -45,7 +48,7 @@ namespace SeaHaven.Services.Implementation
                 currentUserId,
                 page,
                 pageSize,
-                query.SortBy ?? "scheduledDate",
+                sortBy,
                 query.SortDir ?? "asc");
 
             var result = await _searchDataService.SearchAsync(dataQuery);
@@ -56,7 +59,8 @@ namespace SeaHaven.Services.Implementation
                 Items = result.Rows.Select(r => WorkOrderBoardService.MapRawRow(r, utcNow)).ToList(),
                 TotalCount = result.TotalCount,
                 Page = page,
-                PageSize = pageSize
+                PageSize = pageSize,
+                PageBase = 0
             };
         }
     }
diff --git a/SeaHaven.Services/Implementation/WorkOrderBoardService.cs b/SeaHaven.Services/Implementation/WorkOrderBoardService.cs
index e381f23..f6fdb1f 100644
--- a/SeaHaven.Services/Implementation/WorkOrderBoardService.cs
+++ b/SeaHaven.Services/Implementation/WorkOrderBoardService.cs
@@ -32,6 +32,7 @@ namespace SeaHaven.Services.Implementation
                 query.Dispatchers,
                 query.MyWorkOrders,
                 query.Types,
+                query.Overdue,
                 query.Search,
                 currentUserId);
 
diff --git a/SeaHaven.Services/Implementation/WorkOrderCommentService.cs b/SeaHaven.Services/Implementation/WorkOrderCommentService.cs
index d91599e..aa17d38 100644
--- a/SeaHaven.Services/Implementation/WorkOrderCommentService.cs
+++ b/SeaHaven.Services/Implementation/WorkOrderCommentService.cs
@@ -1,4 +1,4 @@
-using Data.SeaHavenIndustries;
+using Data.SeaHavenIndustries;
 using SeaHaven.DataServices.Interfaces;
 using SeaHaven.Services.DTOs;
 using SeaHaven.Services.Exceptions;
@@ -11,13 +11,16 @@ namespace SeaHaven.Services.Implementation
     {
         private readonly IWorkOrderDetailDataService _detailData;
         private readonly ICommentDataService _commentData;
+        private readonly IUserDataService _userDataService;
 
         public WorkOrderCommentService(
             IWorkOrderDetailDataService detailData,
-            ICommentDataService commentData)
+            ICommentDataService commentData,
+            IUserDataService userDataService)
         {
             _detailData = detailData;
             _commentData = commentData;
+            _userDataService = userDataService;
         }
 
         public async Task<IReadOnlyList<WorkOrderCommentDto>?> GetCommentsAsync(int workOrderId)
@@ -26,7 +29,8 @@ namespace SeaHaven.Services.Implementation
                 return null;
 
             var comments = await _detailData.GetCommentsAsync(workOrderId);
-            return WorkOrderCommentProjection.ToDtos(comments);
+            var authorNames = await ResolveAuthorNamesAsync(comments);
+            return WorkOrderCommentProjection.ToDtos(comments, authorNames);
         }
 
         public async Task<WorkOrderCommentDto> AddCommentAsync(
@@ -53,7 +57,58 @@ namespace SeaHaven.Services.Implementation
             };
 
             var saved = await _commentData.AddAsync(comment);
-            return WorkOrderCommentProjection.ToDto(saved);
+            var authorNames = await ResolveAuthorNamesAsync(new[] { saved });
+            return WorkOrderCommentProjection.ToDto(saved, authorNames);
+        }
+
+        public async Task<WorkOrderCommentDto> UpdateCommentAsync(
+            int workOrderId,
+            int commentId,
+            WorkOrderCommentCreateDto request,
+            string? actorId,
+            bool isAdmin)
+        {
+            var workOrder = await _detailData.GetWorkOrderForMediaAsync(workOrderId);
+            if (workOrder == null)
+                throw new WorkOrderBoardValidationException("NotFound", "Work order not found.");
+
+            if (WorkOrderBoardMutationRules.IsReadOnly(workOrder.LifecycleStatus))
+                throw new WorkOrderBoardValidationException("ReadOnly", "Work order is read-only in its current status.");
+
+            if (string.IsNullOrWhiteSpace(request.Text))
+                throw new WorkOrderBoardValidationException("InvalidValue", "Comment text is required.");
+
+            var comment = await _commentData.GetByIdAsync(commentId);
+            if (comment == null || comment.WorkerOrderId != workOrderId || comment.IsDeleted == true)
+                throw new WorkOrderBoardValidationException("NotFound", "Comment not found.");
+
+            if (!IsBoardEditableComment(comment))
+                throw new WorkOrderBoardValidationException(
+                    "NotEditable",
+                    "Only board comments (CommentType General) can be edited via this endpoint.");
+
+            var isAuthor = !string.IsNullOrWhiteSpace(actorId)
+                && string.Equals(comment.UserId, actorId, StringComparison.Ordinal);
+            if (!isAuthor && !isAdmin)
+                throw new WorkOrderBoardValidationException("Forbidden", "You are not allowed to edit this comment.");
+
+            comment.Commenttext = request.Text.Trim();
+            comment.LastModificationTime = DateTime.UtcNow;
+            await _commentData.UpdateAsync(comment);
+
+            var authorNames = await ResolveAuthorNamesAsync(new[] { comment });
+            return WorkOrderCommentProjection.ToDto(comment, authorNames);
+        }
+
+        private static bool IsBoardEditableComment(Comments comment)
+            => string.Equals(comment.CommentType, "General", StringComparison.OrdinalIgnoreCase)
+               && string.Equals(comment.RecordType, "WorkOrder", StringComparison.OrdinalIgnoreCase);
+
+        private async Task<IReadOnlyDictionary<string, string>> ResolveAuthorNamesAsync(
+            IEnumerable<Comments> comments)
+        {
+            var authorIds = WorkOrderCommentProjection.CollectAuthorUserIds(comments);
+            return await _userDataService.GetDisplayNamesByIdsAsync(authorIds);
         }
     }
 }
diff --git a/SeaHaven.Services/Interfaces/IWorkOrderCommentService.cs b/SeaHaven.Services/Interfaces/IWorkOrderCommentService.cs
index 9b1e2a2..5e6a4ea 100644
--- a/SeaHaven.Services/Interfaces/IWorkOrderCommentService.cs
+++ b/SeaHaven.Services/Interfaces/IWorkOrderCommentService.cs
@@ -1,4 +1,4 @@
-using Data.SeaHavenIndustries.Enums;
+using Data.SeaHavenIndustries.Enums;
 using SeaHaven.Services.DTOs;
 
 namespace SeaHaven.Services.Interfaces
@@ -7,5 +7,11 @@ namespace SeaHaven.Services.Interfaces
     {
         Task<IReadOnlyList<WorkOrderCommentDto>?> GetCommentsAsync(int workOrderId);
         Task<WorkOrderCommentDto> AddCommentAsync(int workOrderId, WorkOrderCommentCreateDto request, string? actorId, string? documentUrl = null);
+        Task<WorkOrderCommentDto> UpdateCommentAsync(
+            int workOrderId,
+            int commentId,
+            WorkOrderCommentCreateDto request,
+            string? actorId,
+            bool isAdmin);
     }
 }
diff --git a/SeaHavenIndustries.Tests/WorkOrderBoardSearchTests.cs b/SeaHavenIndustries.Tests/WorkOrderBoardSearchTests.cs
index 290b63d..0f4dd34 100644
--- a/SeaHavenIndustries.Tests/WorkOrderBoardSearchTests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderBoardSearchTests.cs
@@ -22,6 +22,9 @@ public class WorkOrderBoardSearchFilterTests
     [InlineData("HVAC Tech", 1)]
     [InlineData("Acme HVAC", 1)]
     [InlineData("sched", 1)]
+    [InlineData("Leak repair", 1)]
+    [InlineData("Reactive", 1)]
+    [InlineData("6/23", 1)]
     public async Task Apply_MatchesExpectedField(string search, int expectedId)
     {
         await using var context = CreateContext();
@@ -73,6 +76,9 @@ public class WorkOrderBoardSearchFilterTests
             Id = 1,
             SiteCode = "BK5",
             InternalWONumber = "10000000001",
+            WorkerOrderTitle = "Leak repair",
+            WorkOrderType = WorkOrderType.Reactive,
+            ScheduledDate = new DateTime(2026, 6, 23),
             LifecycleStatus = LifecycleStatus.Scheduled,
             PrimaryDispatchId = 10
         });
@@ -128,6 +134,7 @@ public class WorkOrderBoardSearchCountsTests
             null,
             false,
             null,
+            false,
             "BK5",
             null));
 
@@ -152,7 +159,7 @@ public class WorkOrderSearchDateRangeResolverTests
             reference);
 
         Assert.Equal(new DateOnly(2026, 6, 22), range.From);
-        Assert.Equal(new DateOnly(2026, 6, 28), range.To);
+        Assert.Equal(new DateOnly(2026, 6, 26), range.To);
     }
 
     [Fact]
@@ -213,7 +220,7 @@ public class WorkOrderAdvancedSearchServiceTests
             DateFrom = weekStart,
             DateTo = weekStart.AddDays(6),
             Sites = new List<string> { "BK5" },
-            Page = 1,
+            Page = 0,
             PageSize = 50
         }, null);
 
@@ -237,4 +244,365 @@ public class WorkOrderAdvancedSearchServiceTests
 
         Assert.Equal(100, result.PageSize);
     }
+
+    [Fact]
+    public async Task SearchAsync_PageZero_ReturnsFirstPage()
+    {
+        await using var context = CreateContext();
+        var weekStart = new DateOnly(2026, 6, 22);
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                SiteCode = "BK5",
+                ScheduledDate = new DateTime(2026, 6, 23),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                SiteCode = "BK6",
+                ScheduledDate = new DateTime(2026, 6, 24),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = weekStart,
+            DateTo = weekStart.AddDays(4),
+            Page = 0,
+            PageSize = 1
+        }, null);
+
+        Assert.Equal(2, result.TotalCount);
+        Assert.Single(result.Items);
+        Assert.Equal(0, result.Page);
+    }
+
+    [Fact]
+    public async Task SearchAsync_TypesOther_ReturnsOtherRowsNotPastDueSentinel()
+    {
+        await using var context = CreateContext();
+        var today = DateTime.UtcNow.Date;
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                WorkOrderType = WorkOrderType.PM,
+                ScheduledDate = today.AddDays(-3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                WorkOrderType = WorkOrderType.Other,
+                ScheduledDate = today.AddDays(3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = DateOnly.FromDateTime(today.AddMonths(-1)),
+            DateTo = DateOnly.FromDateTime(today.AddMonths(1)),
+            Types = new List<WorkOrderType> { WorkOrderType.Other }
+        }, null);
+
+        Assert.Equal(1, result.TotalCount);
+        Assert.Equal(2, result.Items.First().Id);
+        Assert.Equal(WorkOrderType.Other, result.Items.First().WorkOrderType);
+        Assert.False(result.Items.First().IsPastDue);
+    }
+
+    [Fact]
+    public async Task SearchAsync_OverdueTrue_ReturnsPastDueRowsOnly()
+    {
+        await using var context = CreateContext();
+        var today = DateTime.UtcNow.Date;
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                WorkOrderType = WorkOrderType.PM,
+                ScheduledDate = today.AddDays(-3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                WorkOrderType = WorkOrderType.Other,
+                ScheduledDate = today.AddDays(3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            },
+            new WorkOrder
+            {
+                Id = 3,
+                WorkOrderType = WorkOrderType.Reactive,
+                ScheduledDate = today.AddDays(1),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000003"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = DateOnly.FromDateTime(today.AddMonths(-1)),
+            DateTo = DateOnly.FromDateTime(today.AddMonths(1)),
+            Overdue = true
+        }, null);
+
+        Assert.Equal(1, result.TotalCount);
+        Assert.Equal(1, result.Items.First().Id);
+        Assert.True(result.Items.First().IsPastDue);
+    }
+
+    [Fact]
+    public async Task SearchAsync_OtherPlusOverdue_ReturnsUnion()
+    {
+        await using var context = CreateContext();
+        var today = DateTime.UtcNow.Date;
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                WorkOrderType = WorkOrderType.PM,
+                ScheduledDate = today.AddDays(-3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                WorkOrderType = WorkOrderType.Other,
+                ScheduledDate = today.AddDays(3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            },
+            new WorkOrder
+            {
+                Id = 3,
+                WorkOrderType = WorkOrderType.Reactive,
+                ScheduledDate = today.AddDays(1),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000003"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = DateOnly.FromDateTime(today.AddMonths(-1)),
+            DateTo = DateOnly.FromDateTime(today.AddMonths(1)),
+            Types = new List<WorkOrderType> { WorkOrderType.Other },
+            Overdue = true
+        }, null);
+
+        Assert.Equal(2, result.TotalCount);
+        Assert.Contains(result.Items, i => i.Id == 1 && i.IsPastDue);
+        Assert.Contains(result.Items, i => i.Id == 2 && i.WorkOrderType == WorkOrderType.Other);
+        Assert.DoesNotContain(result.Items, i => i.Id == 3);
+    }
+
+    [Fact]
+    public async Task SearchAsync_OverdueDerivesFromDateAndStatus_NotWorkOrderType()
+    {
+        await using var context = CreateContext();
+        var today = DateTime.UtcNow.Date;
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                WorkOrderType = WorkOrderType.Other,
+                ScheduledDate = today.AddDays(5),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                WorkOrderType = WorkOrderType.PM,
+                ScheduledDate = today.AddDays(-3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            },
+            new WorkOrder
+            {
+                Id = 3,
+                WorkOrderType = WorkOrderType.Reactive,
+                ScheduledDate = today.AddDays(-2),
+                LifecycleStatus = LifecycleStatus.Completed,
+                InternalWONumber = "10000000003"
+            },
+            new WorkOrder
+            {
+                Id = 4,
+                WorkOrderType = WorkOrderType.Reactive,
+                ScheduledDate = today.AddDays(-1),
+                LifecycleStatus = LifecycleStatus.Canceled,
+                InternalWONumber = "10000000004"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = DateOnly.FromDateTime(today.AddMonths(-1)),
+            DateTo = DateOnly.FromDateTime(today.AddMonths(1)),
+            Overdue = true,
+            Page = 0,
+            PageSize = 50
+        }, null);
+
+        var overdue = Assert.Single(result.Items);
+        Assert.Equal(0, result.Page);
+        Assert.Equal(2, overdue.Id);
+        Assert.True(overdue.IsPastDue);
+        Assert.DoesNotContain(result.Items, i => i.Id == 1);
+        Assert.DoesNotContain(result.Items, i => i.Id == 3);
+        Assert.DoesNotContain(result.Items, i => i.Id == 4);
+    }
+
+    [Fact]
+    public async Task SearchAsync_TreatsOtherAsRealTypeFilter_NotOverdueSentinel()
+    {
+        await using var context = CreateContext();
+        var today = DateTime.UtcNow.Date;
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                WorkOrderType = WorkOrderType.PM,
+                ScheduledDate = today.AddDays(2),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                WorkOrderType = WorkOrderType.Other,
+                ScheduledDate = today.AddDays(2),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000002"
+            },
+            new WorkOrder
+            {
+                Id = 3,
+                WorkOrderType = WorkOrderType.Reactive,
+                ScheduledDate = today.AddDays(-3),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000003"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = DateOnly.FromDateTime(today.AddMonths(-1)),
+            DateTo = DateOnly.FromDateTime(today.AddMonths(1)),
+            Types = new List<WorkOrderType> { WorkOrderType.PM, WorkOrderType.Other },
+            Page = 0,
+            PageSize = 50
+        }, null);
+
+        Assert.Equal(2, result.TotalCount);
+        Assert.Equal(0, result.Page);
+        Assert.Contains(result.Items, i => i.Id == 1 && i.WorkOrderType == WorkOrderType.PM);
+        Assert.Contains(result.Items, i => i.Id == 2 && i.WorkOrderType == WorkOrderType.Other);
+        Assert.DoesNotContain(result.Items, i => i.Id == 3);
+    }
+
+    [Fact]
+    public async Task SearchAsync_IncludesUnscheduledRows()
+    {
+        await using var context = CreateContext();
+        var weekStart = new DateOnly(2026, 6, 22);
+
+        context.workOrders.AddRange(
+            new WorkOrder
+            {
+                Id = 1,
+                ScheduledDate = new DateTime(2026, 6, 23),
+                LifecycleStatus = LifecycleStatus.Scheduled,
+                InternalWONumber = "10000000001"
+            },
+            new WorkOrder
+            {
+                Id = 2,
+                ScheduledDate = null,
+                LifecycleStatus = LifecycleStatus.Incomplete,
+                InternalWONumber = "10000000002"
+            });
+
+        await context.SaveChangesAsync();
+
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var result = await service.SearchAsync(new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+        {
+            DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.Custom,
+            DateFrom = weekStart,
+            DateTo = weekStart.AddDays(4)
+        }, null);
+
+        Assert.Equal(2, result.TotalCount);
+        Assert.Contains(result.Items, i => i.Id == 2);
+    }
+
+    [Fact]
+    public async Task SearchAsync_InvalidSortBy_Throws()
+    {
+        await using var context = CreateContext();
+        var dataService = new WorkOrderAdvancedSearchDataService(context);
+        var service = new SeaHaven.Services.Implementation.WorkOrderAdvancedSearchService(dataService);
+
+        var ex = await Assert.ThrowsAsync<ArgumentException>(() => service.SearchAsync(
+            new SeaHaven.Services.DTOs.WorkOrderAdvancedSearchQueryDto
+            {
+                DatePreset = SeaHaven.Services.Helpers.WorkOrderAdvancedSearchDatePreset.ThisWeek,
+                SortBy = "invalid"
+            }, null));
+
+        Assert.Contains("sortBy", ex.Message);
+    }
 }
diff --git a/SeaHavenIndustries.Tests/WorkOrderBoardServiceTests.cs b/SeaHavenIndustries.Tests/WorkOrderBoardServiceTests.cs
index 8b1b867..2652ccd 100644
--- a/SeaHavenIndustries.Tests/WorkOrderBoardServiceTests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderBoardServiceTests.cs
@@ -67,6 +67,7 @@ public class WorkOrderBoardDataServiceTests
             null,
             false,
             null,
+            false,
             null,
             null));
 
@@ -109,6 +110,7 @@ public class WorkOrderBoardDataServiceTests
             new[] { "user-a" },
             false,
             null,
+            false,
             null,
             null));
 
@@ -147,6 +149,7 @@ public class WorkOrderBoardDataServiceTests
             null,
             true,
             null,
+            false,
             null,
             "me"));
 
diff --git a/SeaHavenIndustries.Tests/WorkOrderPhase6Tests.cs b/SeaHavenIndustries.Tests/WorkOrderPhase6Tests.cs
index 1d7d2f6..198f18f 100644
--- a/SeaHavenIndustries.Tests/WorkOrderPhase6Tests.cs
+++ b/SeaHavenIndustries.Tests/WorkOrderPhase6Tests.cs
@@ -313,7 +313,8 @@ public class WorkOrderCommentServiceTests
 
         var detailData = new WorkOrderDetailDataService(context);
         var commentData = new CommentDataService(context);
-        var service = new WorkOrderCommentService(detailData, commentData);
+        var userData = new UserDataService(context);
+        var service = new WorkOrderCommentService(detailData, commentData, userData);
 
         var result = await service.AddCommentAsync(1, new WorkOrderCommentCreateDto { Text = "Note" }, "user-abc");