feat: pricing library — curated priced items feed the RAG corpus (#127)

Adds a managed pricing library so admins can seed/curate reference priced items
directly, instead of the corpus being populated only by ingesting Sent proposals.
v1 PR5.

API:
- PricingLibraryItem entity + migration; /api/pricing-library CRUD (admin), with
  GET {id} reachable by internal Lambda callers (admins role via internal key).
- Create/update publish an ADDITIVE library-ingest SQS job {pricingLibraryItemId},
  wrapped so a publish failure never rolls back the save.

Lambda (library-ingest):
- Additive event-shape branch: pricingLibraryItemId -> fetch item, format markdown,
  upload to pricing-library/{category}/{id}.md, trigger KB sync. The existing
  proposalId path is byte-for-byte unchanged. Explicit error when neither id present;
  warns when both present.

Web:
- Pricing Library management page (/admin/pricing-library): list / create / edit / delete.

GPT-4.1 cross-review on the event-shape change: no BLOCK (neither/both-id handling
applied). Verified: api 159 tests; web tsc + 26 tests; lambdas ruff + 37 pytest.

api/src/ProposalSystem.Api/Controllers/PricingLibraryController.cs

@@ -0,0 +1,96 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using ProposalSystem.Application.DTOs;
+using ProposalSystem.Application.Interfaces;
+
+namespace ProposalSystem.Api.Controllers;
+
+/// <summary>
+/// PR5: Pricing Library CRUD endpoints. Admins seed/manage reusable priced
+/// reference items that feed the Bedrock RAG corpus.
+///
+/// GET {id} is reachable by the internal API key middleware (which assigns
+/// the "admins" role) so the library-ingest Lambda can fetch item details.
+/// </summary>
+[ApiController]
+[Route("api/pricing-library")]
+[Authorize]
+public class PricingLibraryController : ControllerBase
+{
+    private readonly IPricingLibraryService _pricingLibraryService;
+
+    public PricingLibraryController(IPricingLibraryService pricingLibraryService)
+    {
+        _pricingLibraryService = pricingLibraryService;
+    }
+
+    [HttpGet("list")]
+    [Authorize(Roles = "admins,sysadmins")]
+    [ProducesResponseType(typeof(PagedResponse<PricingLibraryItemResponse>), 200)]
+    public async Task<ActionResult<PagedResponse<PricingLibraryItemResponse>>> List(
+        [FromQuery] int page = 1,
+        [FromQuery] int pageSize = 25,
+        CancellationToken ct = default)
+    {
+        var result = await _pricingLibraryService.ListAsync(page, pageSize, ct);
+        return Ok(result);
+    }
+
+    /// <summary>
+    /// Get a single pricing library item. Accessible by admins/sysadmins role,
+    /// which includes internal Lambda callers (the internal API key middleware
+    /// assigns the "admins" role).
+    /// </summary>
+    [HttpGet("{id:guid}")]
+    [Authorize(Roles = "admins,sysadmins")]
+    [ProducesResponseType(typeof(PricingLibraryItemResponse), 200)]
+    [ProducesResponseType(404)]
+    public async Task<ActionResult<PricingLibraryItemResponse>> GetById(
+        Guid id,
+        CancellationToken ct)
+    {
+        var result = await _pricingLibraryService.GetByIdAsync(id, ct);
+        if (result == null) return NotFound();
+        return Ok(result);
+    }
+
+    [HttpPost]
+    [Authorize(Roles = "admins,sysadmins")]
+    [ProducesResponseType(typeof(PricingLibraryItemResponse), 201)]
+    [ProducesResponseType(400)]
+    public async Task<ActionResult<PricingLibraryItemResponse>> Create(
+        [FromBody] CreatePricingLibraryItemRequest request,
+        CancellationToken ct)
+    {
+        var result = await _pricingLibraryService.CreateAsync(request, ct);
+        return CreatedAtAction(nameof(GetById), new { id = result.Id }, result);
+    }
+
+    [HttpPut("{id:guid}")]
+    [Authorize(Roles = "admins,sysadmins")]
+    [ProducesResponseType(typeof(PricingLibraryItemResponse), 200)]
+    [ProducesResponseType(400)]
+    [ProducesResponseType(404)]
+    public async Task<ActionResult<PricingLibraryItemResponse>> Update(
+        Guid id,
+        [FromBody] UpdatePricingLibraryItemRequest request,
+        CancellationToken ct)
+    {
+        var result = await _pricingLibraryService.UpdateAsync(id, request, ct);
+        if (result == null) return NotFound();
+        return Ok(result);
+    }
+
+    [HttpDelete("{id:guid}")]
+    [Authorize(Roles = "admins,sysadmins")]
+    [ProducesResponseType(204)]
+    [ProducesResponseType(404)]
+    public async Task<IActionResult> Delete(
+        Guid id,
+        CancellationToken ct)
+    {
+        var deleted = await _pricingLibraryService.DeleteAsync(id, ct);
+        if (!deleted) return NotFound();
+        return NoContent();
+    }
+}

api/src/ProposalSystem.Api/Program.cs

@@ -137,6 +137,7 @@ else
     builder.Services.AddScoped<IEmailService, SesEmailService>();
 }
 builder.Services.AddScoped<ISimilarProposalService, SimilarProposalService>();
+builder.Services.AddScoped<IPricingLibraryService, PricingLibraryService>();
 var jobsQueueUrl = builder.Configuration["JOBS_QUEUE_URL"] ?? "";
 if (string.IsNullOrEmpty(jobsQueueUrl))
 {

api/src/ProposalSystem.Application/DTOs/PricingLibraryDtos.cs

@@ -0,0 +1,38 @@
+using ProposalSystem.Domain.Entities;
+
+namespace ProposalSystem.Application.DTOs;
+
+/// <summary>
+/// PR5: DTOs for the Pricing Library CRUD endpoints.
+/// </summary>
+public record PricingLibraryItemResponse(
+    Guid Id,
+    string Title,
+    string? Description,
+    ServiceCategory ServiceCategory,
+    string? Unit,
+    decimal? UnitPrice,
+    string? Keywords,
+    string Source,
+    DateTime CreatedAt,
+    DateTime UpdatedAt
+);
+
+public record CreatePricingLibraryItemRequest(
+    string Title,
+    string? Description,
+    ServiceCategory ServiceCategory,
+    string? Unit,
+    decimal? UnitPrice,
+    string? Keywords,
+    string? Source
+);
+
+public record UpdatePricingLibraryItemRequest(
+    string? Title,
+    string? Description,
+    ServiceCategory? ServiceCategory,
+    string? Unit,
+    decimal? UnitPrice,
+    string? Keywords
+);

api/src/ProposalSystem.Application/Interfaces/IPricingLibraryService.cs

@@ -0,0 +1,15 @@
+using ProposalSystem.Application.DTOs;
+
+namespace ProposalSystem.Application.Interfaces;
+
+/// <summary>
+/// PR5: Service interface for Pricing Library CRUD operations.
+/// </summary>
+public interface IPricingLibraryService
+{
+    Task<PagedResponse<PricingLibraryItemResponse>> ListAsync(int page, int pageSize, CancellationToken ct = default);
+    Task<PricingLibraryItemResponse?> GetByIdAsync(Guid id, CancellationToken ct = default);
+    Task<PricingLibraryItemResponse> CreateAsync(CreatePricingLibraryItemRequest request, CancellationToken ct = default);
+    Task<PricingLibraryItemResponse?> UpdateAsync(Guid id, UpdatePricingLibraryItemRequest request, CancellationToken ct = default);
+    Task<bool> DeleteAsync(Guid id, CancellationToken ct = default);
+}

api/src/ProposalSystem.Application/Validators/CreatePricingLibraryItemValidator.cs

@@ -0,0 +1,39 @@
+using FluentValidation;
+using ProposalSystem.Application.DTOs;
+
+namespace ProposalSystem.Application.Validators;
+
+/// <summary>
+/// PR5: Validates CreatePricingLibraryItemRequest payloads.
+/// </summary>
+public class CreatePricingLibraryItemValidator : AbstractValidator<CreatePricingLibraryItemRequest>
+{
+    public CreatePricingLibraryItemValidator()
+    {
+        RuleFor(x => x.Title)
+            .NotEmpty().WithMessage("Title is required")
+            .MaximumLength(200);
+
+        RuleFor(x => x.Description)
+            .MaximumLength(5000)
+            .When(x => x.Description != null);
+
+        RuleFor(x => x.ServiceCategory).IsInEnum();
+
+        RuleFor(x => x.Unit)
+            .MaximumLength(50)
+            .When(x => x.Unit != null);
+
+        RuleFor(x => x.UnitPrice)
+            .GreaterThanOrEqualTo(0).WithMessage("Unit price must be zero or positive")
+            .When(x => x.UnitPrice.HasValue);
+
+        RuleFor(x => x.Keywords)
+            .MaximumLength(2000)
+            .When(x => x.Keywords != null);
+
+        RuleFor(x => x.Source)
+            .MaximumLength(100)
+            .When(x => x.Source != null);
+    }
+}

api/src/ProposalSystem.Application/Validators/UpdatePricingLibraryItemValidator.cs

@@ -0,0 +1,38 @@
+using FluentValidation;
+using ProposalSystem.Application.DTOs;
+
+namespace ProposalSystem.Application.Validators;
+
+/// <summary>
+/// PR5: Validates UpdatePricingLibraryItemRequest payloads.
+/// </summary>
+public class UpdatePricingLibraryItemValidator : AbstractValidator<UpdatePricingLibraryItemRequest>
+{
+    public UpdatePricingLibraryItemValidator()
+    {
+        RuleFor(x => x.Title)
+            .NotEmpty().WithMessage("Title cannot be empty when provided")
+            .MaximumLength(200)
+            .When(x => x.Title != null);
+
+        RuleFor(x => x.Description)
+            .MaximumLength(5000)
+            .When(x => x.Description != null);
+
+        RuleFor(x => x.ServiceCategory)
+            .IsInEnum()
+            .When(x => x.ServiceCategory.HasValue);
+
+        RuleFor(x => x.Unit)
+            .MaximumLength(50)
+            .When(x => x.Unit != null);
+
+        RuleFor(x => x.UnitPrice)
+            .GreaterThanOrEqualTo(0).WithMessage("Unit price must be zero or positive")
+            .When(x => x.UnitPrice.HasValue);
+
+        RuleFor(x => x.Keywords)
+            .MaximumLength(2000)
+            .When(x => x.Keywords != null);
+    }
+}

api/src/ProposalSystem.Domain/Entities/PricingLibraryItem.cs

@@ -0,0 +1,19 @@
+namespace ProposalSystem.Domain.Entities;
+
+/// <summary>
+/// PR5: Reusable priced reference item for the Bedrock RAG pricing library.
+/// Admins seed/manage these to enrich the corpus beyond Sent proposals.
+/// </summary>
+public class PricingLibraryItem
+{
+    public Guid Id { get; set; }
+    public string Title { get; set; } = string.Empty;
+    public string? Description { get; set; }
+    public ServiceCategory ServiceCategory { get; set; }
+    public string? Unit { get; set; }
+    public decimal? UnitPrice { get; set; }
+    public string? Keywords { get; set; }
+    public string Source { get; set; } = "Manual";
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

api/src/ProposalSystem.Infrastructure/Data/Migrations/20260612225458_AddPricingLibrary.Designer.cs

@@ -0,0 +1,552 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using ProposalSystem.Infrastructure.Data;
+
+#nullable disable
+
+namespace ProposalSystem.Infrastructure.Data.Migrations
+{
+    [DbContext(typeof(ProposalDbContext))]
+    [Migration("20260612225458_AddPricingLibrary")]
+    partial class AddPricingLibrary
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.27")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.AuditLog", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Action")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Details")
+                        .HasColumnType("jsonb");
+
+                    b.Property<string>("IpAddress")
+                        .HasColumnType("text");
+
+                    b.Property<Guid?>("ProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("Timestamp")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("UserId")
+                        .HasColumnType("uuid");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProposalId");
+
+                    b.HasIndex("Timestamp");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("AuditLogs");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.Customer", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("Addresses")
+                        .HasColumnType("jsonb");
+
+                    b.Property<string>("ContactEmail")
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Customers");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.GeneratedPdf", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("GeneratedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("GeneratedById")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<int>("Revision")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("S3Key")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("GeneratedById");
+
+                    b.HasIndex("ProposalId");
+
+                    b.ToTable("GeneratedPdfs");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.LineItem", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("PricingMode")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("ProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<decimal>("Quantity")
+                        .HasPrecision(18, 4)
+                        .HasColumnType("numeric(18,4)");
+
+                    b.Property<int>("SortOrder")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Source")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<decimal>("TotalPrice")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<string>("Unit")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<decimal?>("UnitPrice")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProposalId");
+
+                    b.ToTable("LineItems");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.PricingLibraryItem", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Keywords")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ServiceCategory")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Source")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Unit")
+                        .HasColumnType("text");
+
+                    b.Property<decimal?>("UnitPrice")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PricingLibraryItems");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.Proposal", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime?>("ApprovedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid?>("ApprovedById")
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid?>("AssignedAdminId")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("CurrentRevision")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("CustomerAddress")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("CustomerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Notes")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<Guid?>("ParentProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("PoNumber")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Priority")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProposalNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("RefinedScope")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ScopeOfWork")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime?>("SentAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ServiceCategory")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Status")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("SubmittedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("SubmittedById")
+                        .HasColumnType("uuid");
+
+                    b.Property<decimal>("TotalBidAmount")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<decimal?>("VendorTotalCost")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<string>("WorkOrderNumber")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ApprovedById");
+
+                    b.HasIndex("AssignedAdminId");
+
+                    b.HasIndex("ParentProposalId");
+
+                    b.HasIndex("ProposalNumber")
+                        .IsUnique();
+
+                    b.HasIndex("SubmittedById");
+
+                    b.ToTable("Proposals");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.SimilarProposalReference", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<Guid>("ProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("ReferencedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<Guid>("ReferencedById")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ReferencedLibraryItemId")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<float>("SimilarityScore")
+                        .HasColumnType("real");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProposalId");
+
+                    b.HasIndex("ReferencedById");
+
+                    b.ToTable("SimilarProposalReferences");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.User", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("CognitoSub")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("DisplayName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<bool>("IsActive")
+                        .HasColumnType("boolean");
+
+                    b.Property<string>("Role")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("CognitoSub")
+                        .IsUnique();
+
+                    b.HasIndex("Email")
+                        .IsUnique();
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.VendorProposal", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("ExtractedData")
+                        .HasColumnType("jsonb");
+
+                    b.Property<string>("FileName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("ProcessingStatus")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<Guid>("ProposalId")
+                        .HasColumnType("uuid");
+
+                    b.Property<string>("S3Key")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<decimal>("TotalVendorCost")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<DateTime>("UploadedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("VendorName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ProposalId");
+
+                    b.ToTable("VendorProposals");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.AuditLog", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "Proposal")
+                        .WithMany()
+                        .HasForeignKey("ProposalId");
+
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Proposal");
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.GeneratedPdf", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "GeneratedBy")
+                        .WithMany()
+                        .HasForeignKey("GeneratedById")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "Proposal")
+                        .WithMany()
+                        .HasForeignKey("ProposalId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("GeneratedBy");
+
+                    b.Navigation("Proposal");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.LineItem", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "Proposal")
+                        .WithMany("LineItems")
+                        .HasForeignKey("ProposalId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Proposal");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.Proposal", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "ApprovedBy")
+                        .WithMany()
+                        .HasForeignKey("ApprovedById")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "AssignedAdmin")
+                        .WithMany()
+                        .HasForeignKey("AssignedAdminId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "ParentProposal")
+                        .WithMany()
+                        .HasForeignKey("ParentProposalId")
+                        .OnDelete(DeleteBehavior.SetNull);
+
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "SubmittedBy")
+                        .WithMany()
+                        .HasForeignKey("SubmittedById")
+                        .OnDelete(DeleteBehavior.Restrict)
+                        .IsRequired();
+
+                    b.Navigation("ApprovedBy");
+
+                    b.Navigation("AssignedAdmin");
+
+                    b.Navigation("ParentProposal");
+
+                    b.Navigation("SubmittedBy");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.SimilarProposalReference", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "Proposal")
+                        .WithMany()
+                        .HasForeignKey("ProposalId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ProposalSystem.Domain.Entities.User", "ReferencedBy")
+                        .WithMany()
+                        .HasForeignKey("ReferencedById")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Proposal");
+
+                    b.Navigation("ReferencedBy");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.VendorProposal", b =>
+                {
+                    b.HasOne("ProposalSystem.Domain.Entities.Proposal", "Proposal")
+                        .WithMany("VendorProposals")
+                        .HasForeignKey("ProposalId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Proposal");
+                });
+
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.Proposal", b =>
+                {
+                    b.Navigation("LineItems");
+
+                    b.Navigation("VendorProposals");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

api/src/ProposalSystem.Infrastructure/Data/Migrations/20260612225458_AddPricingLibrary.cs

@@ -0,0 +1,42 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ProposalSystem.Infrastructure.Data.Migrations
+{
+    /// <inheritdoc />
+    public partial class AddPricingLibrary : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "PricingLibraryItems",
+                columns: table => new
+                {
+                    Id = table.Column<Guid>(type: "uuid", nullable: false),
+                    Title = table.Column<string>(type: "text", nullable: false),
+                    Description = table.Column<string>(type: "text", nullable: true),
+                    ServiceCategory = table.Column<string>(type: "text", nullable: false),
+                    Unit = table.Column<string>(type: "text", nullable: true),
+                    UnitPrice = table.Column<decimal>(type: "numeric(18,2)", precision: 18, scale: 2, nullable: true),
+                    Keywords = table.Column<string>(type: "text", nullable: true),
+                    Source = table.Column<string>(type: "text", nullable: false),
+                    CreatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    UpdatedAt = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_PricingLibraryItems", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "PricingLibraryItems");
+        }
+    }
+}

api/src/ProposalSystem.Infrastructure/Data/Migrations/ProposalDbContextModelSnapshot.cs

@@ -169,6 +169,48 @@ namespace ProposalSystem.Infrastructure.Data.Migrations
                     b.ToTable("LineItems");
                 });
 
+            modelBuilder.Entity("ProposalSystem.Domain.Entities.PricingLibraryItem", b =>
+                {
+                    b.Property<Guid>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("uuid");
+
+                    b.Property<DateTime>("CreatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("Description")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Keywords")
+                        .HasColumnType("text");
+
+                    b.Property<string>("ServiceCategory")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Source")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Unit")
+                        .HasColumnType("text");
+
+                    b.Property<decimal?>("UnitPrice")
+                        .HasPrecision(18, 2)
+                        .HasColumnType("numeric(18,2)");
+
+                    b.Property<DateTime>("UpdatedAt")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("PricingLibraryItems");
+                });
+
             modelBuilder.Entity("ProposalSystem.Domain.Entities.Proposal", b =>
                 {
                     b.Property<Guid>("Id")

api/src/ProposalSystem.Infrastructure/Data/ProposalDbContext.cs

@@ -17,6 +17,7 @@ public class ProposalDbContext : DbContext
     public DbSet<AuditLog> AuditLogs => Set<AuditLog>();
     public DbSet<SimilarProposalReference> SimilarProposalReferences => Set<SimilarProposalReference>();
     public DbSet<GeneratedPdf> GeneratedPdfs => Set<GeneratedPdf>();
+    public DbSet<PricingLibraryItem> PricingLibraryItems => Set<PricingLibraryItem>();
 
     protected override void OnModelCreating(ModelBuilder modelBuilder)
     {
@@ -92,5 +93,13 @@ public class ProposalDbContext : DbContext
             entity.HasKey(e => e.Id);
             entity.HasOne(e => e.Proposal).WithMany().HasForeignKey(e => e.ProposalId).OnDelete(DeleteBehavior.Cascade);
         });
+
+        // PR5: Pricing Library entity configuration
+        modelBuilder.Entity<PricingLibraryItem>(entity =>
+        {
+            entity.HasKey(e => e.Id);
+            entity.Property(e => e.UnitPrice).HasPrecision(18, 2);
+            entity.Property(e => e.ServiceCategory).HasConversion<string>();
+        });
     }
 }

api/src/ProposalSystem.Infrastructure/Services/PricingLibraryService.cs

@@ -0,0 +1,171 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Logging;
+using ProposalSystem.Application.DTOs;
+using ProposalSystem.Application.Interfaces;
+using ProposalSystem.Domain.Entities;
+using ProposalSystem.Infrastructure.Data;
+
+namespace ProposalSystem.Infrastructure.Services;
+
+/// <summary>
+/// PR5: Pricing Library CRUD service. Publishes "library-ingest" SQS jobs
+/// on create/update so the Bedrock KB corpus stays in sync.
+/// </summary>
+public class PricingLibraryService : IPricingLibraryService
+{
+    private readonly ProposalDbContext _db;
+    private readonly IJobPublisher _jobPublisher;
+    private readonly ILogger<PricingLibraryService> _logger;
+
+    public PricingLibraryService(
+        ProposalDbContext db,
+        IJobPublisher jobPublisher,
+        ILogger<PricingLibraryService> logger)
+    {
+        _db = db;
+        _jobPublisher = jobPublisher;
+        _logger = logger;
+    }
+
+    public async Task<PagedResponse<PricingLibraryItemResponse>> ListAsync(int page, int pageSize, CancellationToken ct = default)
+    {
+        page = Math.Max(1, page);
+        pageSize = Math.Clamp(pageSize, 1, 100);
+
+        var query = _db.PricingLibraryItems.AsNoTracking().AsQueryable();
+
+        var totalCount = await query.CountAsync(ct);
+
+        var items = await query
+            .OrderBy(i => i.Title)
+            .Skip((page - 1) * pageSize)
+            .Take(pageSize)
+            .ToListAsync(ct);
+
+        return new PagedResponse<PricingLibraryItemResponse>(
+            items.Select(MapToResponse).ToList(),
+            totalCount,
+            page,
+            pageSize
+        );
+    }
+
+    public async Task<PricingLibraryItemResponse?> GetByIdAsync(Guid id, CancellationToken ct = default)
+    {
+        var item = await _db.PricingLibraryItems
+            .AsNoTracking()
+            .FirstOrDefaultAsync(i => i.Id == id, ct);
+
+        return item == null ? null : MapToResponse(item);
+    }
+
+    public async Task<PricingLibraryItemResponse> CreateAsync(CreatePricingLibraryItemRequest request, CancellationToken ct = default)
+    {
+        var now = DateTime.UtcNow;
+        var item = new PricingLibraryItem
+        {
+            Id = Guid.NewGuid(),
+            Title = request.Title,
+            Description = request.Description,
+            ServiceCategory = request.ServiceCategory,
+            Unit = request.Unit,
+            UnitPrice = request.UnitPrice,
+            Keywords = request.Keywords,
+            Source = request.Source ?? "Manual",
+            CreatedAt = now,
+            UpdatedAt = now,
+        };
+
+        _db.PricingLibraryItems.Add(item);
+        await _db.SaveChangesAsync(ct);
+
+        _logger.LogInformation("PricingLibraryItem {ItemId} created with title '{Title}'",
+            item.Id, item.Title);
+
+        // PR5: Trigger KB ingestion so the Bedrock RAG corpus picks up the new item.
+        // Wrap in try/catch so a publish failure does not roll back the save
+        // (matches the audit-no-rollback convention from API-H6).
+        try
+        {
+            await _jobPublisher.PublishAsync("library-ingest", new { pricingLibraryItemId = item.Id }, ct);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to publish library-ingest job for PricingLibraryItem {ItemId}", item.Id);
+        }
+
+        return MapToResponse(item);
+    }
+
+    public async Task<PricingLibraryItemResponse?> UpdateAsync(Guid id, UpdatePricingLibraryItemRequest request, CancellationToken ct = default)
+    {
+        var item = await _db.PricingLibraryItems.FindAsync(new object[] { id }, ct);
+        if (item == null) return null;
+
+        if (request.Title != null)
+            item.Title = request.Title;
+
+        if (request.Description != null)
+            item.Description = request.Description;
+
+        if (request.ServiceCategory.HasValue)
+            item.ServiceCategory = request.ServiceCategory.Value;
+
+        if (request.Unit != null)
+            item.Unit = request.Unit;
+
+        if (request.UnitPrice.HasValue)
+            item.UnitPrice = request.UnitPrice.Value;
+
+        if (request.Keywords != null)
+            item.Keywords = request.Keywords;
+
+        item.UpdatedAt = DateTime.UtcNow;
+        await _db.SaveChangesAsync(ct);
+
+        _logger.LogInformation("PricingLibraryItem {ItemId} updated", item.Id);
+
+        // PR5: Trigger KB re-ingestion so the Bedrock RAG corpus reflects the update.
+        // Wrap in try/catch so a publish failure does not roll back the save
+        // (matches the audit-no-rollback convention from API-H6).
+        try
+        {
+            await _jobPublisher.PublishAsync("library-ingest", new { pricingLibraryItemId = item.Id }, ct);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogError(ex, "Failed to publish library-ingest job for PricingLibraryItem {ItemId}", item.Id);
+        }
+
+        return MapToResponse(item);
+    }
+
+    public async Task<bool> DeleteAsync(Guid id, CancellationToken ct = default)
+    {
+        var item = await _db.PricingLibraryItems.FindAsync(new object[] { id }, ct);
+        if (item == null) return false;
+
+        _db.PricingLibraryItems.Remove(item);
+        await _db.SaveChangesAsync(ct);
+
+        _logger.LogInformation("PricingLibraryItem {ItemId} deleted", item.Id);
+
+        // TODO: PR5 follow-up — remove the corresponding markdown document from the
+        // Bedrock Knowledge Base S3 bucket so stale items are not returned by RAG queries.
+
+        return true;
+    }
+
+    private static PricingLibraryItemResponse MapToResponse(PricingLibraryItem item) => new(
+        item.Id,
+        item.Title,
+        item.Description,
+        item.ServiceCategory,
+        item.Unit,
+        item.UnitPrice,
+        item.Keywords,
+        item.Source,
+        item.CreatedAt,
+        item.UpdatedAt
+    );
+}

api/tests/ProposalSystem.Tests/Controllers/AuthorizationAttributeTests.cs

@@ -172,6 +172,7 @@ public class AuthorizationAttributeTests
     [InlineData(typeof(GeneratedPdfsController))]
     [InlineData(typeof(FilesController))]
     [InlineData(typeof(VendorProposalsController))]
+    [InlineData(typeof(PricingLibraryController))]
     public void AllControllers_HaveAuthorizeAttribute(Type controllerType)
     {
         var attr = controllerType.GetCustomAttribute<AuthorizeAttribute>();
@@ -180,4 +181,47 @@ public class AuthorizationAttributeTests
     }
 
     #endregion
+
+    #region PR5: PricingLibraryController Authorization
+
+    [Fact(DisplayName = "PR5: PricingLibraryController requires authentication")]
+    public void PricingLibraryController_HasAuthorizeAttribute()
+    {
+        typeof(PricingLibraryController)
+            .GetCustomAttribute<AuthorizeAttribute>()
+            .Should().NotBeNull("PricingLibraryController should require authentication");
+    }
+
+    [Theory(DisplayName = "PR5: PricingLibrary admin actions require admins/sysadmins role")]
+    [InlineData("List")]
+    [InlineData("GetById")]
+    [InlineData("Create")]
+    [InlineData("Update")]
+    [InlineData("Delete")]
+    public void PricingLibraryController_AdminActions_RequireAdminRole(string methodName)
+    {
+        var method = typeof(PricingLibraryController).GetMethod(methodName);
+        method.Should().NotBeNull($"PricingLibraryController should have a {methodName} method");
+
+        var attr = method!.GetCustomAttribute<AuthorizeAttribute>();
+        attr.Should().NotBeNull($"{methodName} should have [Authorize] attribute");
+        attr!.Roles.Should().NotBeNull($"{methodName} should specify roles");
+        attr.Roles!.Split(',').Select(r => r.Trim()).Should()
+            .Contain("admins", $"{methodName} should allow admins (including internal Lambda callers)")
+            .And.Contain("sysadmins", $"{methodName} should allow sysadmins");
+    }
+
+    [Fact(DisplayName = "PR5: PricingLibrary GetById is reachable by internal Lambda callers (admins role)")]
+    public void PricingLibraryController_GetById_AllowsAdminsRole()
+    {
+        var method = typeof(PricingLibraryController).GetMethod("GetById");
+        method.Should().NotBeNull();
+
+        var attr = method!.GetCustomAttribute<AuthorizeAttribute>();
+        attr.Should().NotBeNull();
+        attr!.Roles.Should().Contain("admins",
+            "GetById must be reachable by the internal API key middleware which assigns the 'admins' role");
+    }
+
+    #endregion
 }

api/tests/ProposalSystem.Tests/Services/PricingLibraryServiceTests.cs

@@ -0,0 +1,326 @@
+using FluentAssertions;
+using Microsoft.Extensions.Logging;
+using NSubstitute;
+using NSubstitute.ExceptionExtensions;
+using ProposalSystem.Application.DTOs;
+using ProposalSystem.Application.Interfaces;
+using ProposalSystem.Domain.Entities;
+using ProposalSystem.Infrastructure.Services;
+using ProposalSystem.Tests.Helpers;
+using Xunit;
+
+namespace ProposalSystem.Tests.Services;
+
+/// <summary>
+/// PR5: Tests for PricingLibraryService. Verifies CRUD behavior and that
+/// create/update publish "library-ingest" SQS jobs for KB sync.
+/// </summary>
+public class PricingLibraryServiceTests : IDisposable
+{
+    private readonly Infrastructure.Data.ProposalDbContext _db;
+    private readonly IJobPublisher _jobPublisher;
+    private readonly PricingLibraryService _sut;
+
+    public PricingLibraryServiceTests()
+    {
+        _db = DbContextFactory.Create();
+        _jobPublisher = Substitute.For<IJobPublisher>();
+
+        _sut = new PricingLibraryService(
+            _db,
+            _jobPublisher,
+            Substitute.For<ILogger<PricingLibraryService>>());
+    }
+
+    public void Dispose()
+    {
+        _db.Dispose();
+    }
+
+    #region Create
+
+    [Fact(DisplayName = "PR5: Create returns item with generated Id and timestamps")]
+    public async Task CreateAsync_ReturnsItemWithIdAndTimestamps()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "HVAC Filter Replacement",
+            Description: "Standard filter replacement service",
+            ServiceCategory: ServiceCategory.HVAC,
+            Unit: "ea",
+            UnitPrice: 45.00m,
+            Keywords: "filter HVAC maintenance",
+            Source: "Manual"
+        );
+
+        var result = await _sut.CreateAsync(request);
+
+        result.Id.Should().NotBe(Guid.Empty);
+        result.Title.Should().Be("HVAC Filter Replacement");
+        result.Description.Should().Be("Standard filter replacement service");
+        result.ServiceCategory.Should().Be(ServiceCategory.HVAC);
+        result.Unit.Should().Be("ea");
+        result.UnitPrice.Should().Be(45.00m);
+        result.Keywords.Should().Be("filter HVAC maintenance");
+        result.Source.Should().Be("Manual");
+        result.CreatedAt.Should().BeCloseTo(DateTime.UtcNow, TimeSpan.FromSeconds(5));
+        result.UpdatedAt.Should().BeCloseTo(DateTime.UtcNow, TimeSpan.FromSeconds(5));
+    }
+
+    [Fact(DisplayName = "PR5: Create defaults Source to 'Manual' when null")]
+    public async Task CreateAsync_DefaultsSourceToManual()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Basic Item",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = await _sut.CreateAsync(request);
+
+        result.Source.Should().Be("Manual");
+    }
+
+    [Fact(DisplayName = "PR5: Create publishes library-ingest job with pricingLibraryItemId")]
+    public async Task CreateAsync_PublishesLibraryIngestJob()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Test Item",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = await _sut.CreateAsync(request);
+
+        await _jobPublisher.Received(1).PublishAsync(
+            "library-ingest",
+            Arg.Is<object>(o => o.ToString()!.Contains(result.Id.ToString())),
+            Arg.Any<CancellationToken>());
+    }
+
+    [Fact(DisplayName = "PR5: Create succeeds even when job publish fails (no rollback)")]
+    public async Task CreateAsync_JobPublishFails_DoesNotRollBack()
+    {
+        _jobPublisher.PublishAsync(Arg.Any<string>(), Arg.Any<object>(), Arg.Any<CancellationToken>())
+            .Throws(new InvalidOperationException("SQS is down"));
+
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Resilient Item",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = await _sut.CreateAsync(request);
+
+        result.Title.Should().Be("Resilient Item");
+        // Verify item was persisted despite job publish failure
+        var dbItem = await _db.PricingLibraryItems.FindAsync(result.Id);
+        dbItem.Should().NotBeNull();
+    }
+
+    #endregion
+
+    #region Update
+
+    [Fact(DisplayName = "PR5: Update modifies provided fields and publishes ingest job")]
+    public async Task UpdateAsync_ModifiesFieldsAndPublishesJob()
+    {
+        // Seed an item
+        var originalUpdatedAt = DateTime.UtcNow.AddDays(-1);
+        var item = new PricingLibraryItem
+        {
+            Id = Guid.NewGuid(),
+            Title = "Original Title",
+            Description = "Original",
+            ServiceCategory = ServiceCategory.General,
+            Unit = "ea",
+            UnitPrice = 10.00m,
+            Keywords = "original",
+            Source = "Manual",
+            CreatedAt = DateTime.UtcNow.AddDays(-1),
+            UpdatedAt = originalUpdatedAt,
+        };
+        _db.PricingLibraryItems.Add(item);
+        await _db.SaveChangesAsync();
+
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: "Updated Title",
+            Description: null,
+            ServiceCategory: ServiceCategory.Electrical,
+            Unit: null,
+            UnitPrice: 99.99m,
+            Keywords: null
+        );
+
+        var result = await _sut.UpdateAsync(item.Id, request);
+
+        result.Should().NotBeNull();
+        result!.Title.Should().Be("Updated Title");
+        result.ServiceCategory.Should().Be(ServiceCategory.Electrical);
+        result.UnitPrice.Should().Be(99.99m);
+        result.UpdatedAt.Should().BeAfter(originalUpdatedAt);
+
+        await _jobPublisher.Received(1).PublishAsync(
+            "library-ingest",
+            Arg.Is<object>(o => o.ToString()!.Contains(item.Id.ToString())),
+            Arg.Any<CancellationToken>());
+    }
+
+    [Fact(DisplayName = "PR5: Update returns null for non-existent item")]
+    public async Task UpdateAsync_NonExistentItem_ReturnsNull()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: "Does Not Exist",
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = await _sut.UpdateAsync(Guid.NewGuid(), request);
+
+        result.Should().BeNull();
+    }
+
+    [Fact(DisplayName = "PR5: Update succeeds even when job publish fails (no rollback)")]
+    public async Task UpdateAsync_JobPublishFails_DoesNotRollBack()
+    {
+        var item = new PricingLibraryItem
+        {
+            Id = Guid.NewGuid(),
+            Title = "Will Be Updated",
+            ServiceCategory = ServiceCategory.General,
+            Source = "Manual",
+            CreatedAt = DateTime.UtcNow,
+            UpdatedAt = DateTime.UtcNow,
+        };
+        _db.PricingLibraryItems.Add(item);
+        await _db.SaveChangesAsync();
+
+        _jobPublisher.PublishAsync(Arg.Any<string>(), Arg.Any<object>(), Arg.Any<CancellationToken>())
+            .Throws(new InvalidOperationException("SQS is down"));
+
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: "Updated Despite SQS Failure",
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = await _sut.UpdateAsync(item.Id, request);
+
+        result.Should().NotBeNull();
+        result!.Title.Should().Be("Updated Despite SQS Failure");
+    }
+
+    #endregion
+
+    #region GetById
+
+    [Fact(DisplayName = "PR5: GetById returns item when it exists")]
+    public async Task GetByIdAsync_ExistingItem_ReturnsItem()
+    {
+        var item = new PricingLibraryItem
+        {
+            Id = Guid.NewGuid(),
+            Title = "Findable Item",
+            ServiceCategory = ServiceCategory.Plumbing,
+            Source = "Manual",
+            CreatedAt = DateTime.UtcNow,
+            UpdatedAt = DateTime.UtcNow,
+        };
+        _db.PricingLibraryItems.Add(item);
+        await _db.SaveChangesAsync();
+
+        var result = await _sut.GetByIdAsync(item.Id);
+
+        result.Should().NotBeNull();
+        result!.Id.Should().Be(item.Id);
+        result.Title.Should().Be("Findable Item");
+    }
+
+    [Fact(DisplayName = "PR5: GetById returns null for non-existent item")]
+    public async Task GetByIdAsync_NonExistentItem_ReturnsNull()
+    {
+        var result = await _sut.GetByIdAsync(Guid.NewGuid());
+
+        result.Should().BeNull();
+    }
+
+    #endregion
+
+    #region Delete
+
+    [Fact(DisplayName = "PR5: Delete removes item and returns true")]
+    public async Task DeleteAsync_ExistingItem_RemovesAndReturnsTrue()
+    {
+        var item = new PricingLibraryItem
+        {
+            Id = Guid.NewGuid(),
+            Title = "To Be Deleted",
+            ServiceCategory = ServiceCategory.General,
+            Source = "Manual",
+            CreatedAt = DateTime.UtcNow,
+            UpdatedAt = DateTime.UtcNow,
+        };
+        _db.PricingLibraryItems.Add(item);
+        await _db.SaveChangesAsync();
+
+        var result = await _sut.DeleteAsync(item.Id);
+
+        result.Should().BeTrue();
+        var dbItem = await _db.PricingLibraryItems.FindAsync(item.Id);
+        dbItem.Should().BeNull();
+    }
+
+    [Fact(DisplayName = "PR5: Delete returns false for non-existent item")]
+    public async Task DeleteAsync_NonExistentItem_ReturnsFalse()
+    {
+        var result = await _sut.DeleteAsync(Guid.NewGuid());
+
+        result.Should().BeFalse();
+    }
+
+    #endregion
+
+    #region List
+
+    [Fact(DisplayName = "PR5: List returns paginated results ordered by title")]
+    public async Task ListAsync_ReturnsPaginatedResults()
+    {
+        // Seed 3 items
+        var items = new[]
+        {
+            new PricingLibraryItem { Id = Guid.NewGuid(), Title = "Charlie", ServiceCategory = ServiceCategory.General, Source = "Manual", CreatedAt = DateTime.UtcNow, UpdatedAt = DateTime.UtcNow },
+            new PricingLibraryItem { Id = Guid.NewGuid(), Title = "Alpha", ServiceCategory = ServiceCategory.HVAC, Source = "Manual", CreatedAt = DateTime.UtcNow, UpdatedAt = DateTime.UtcNow },
+            new PricingLibraryItem { Id = Guid.NewGuid(), Title = "Bravo", ServiceCategory = ServiceCategory.Plumbing, Source = "Manual", CreatedAt = DateTime.UtcNow, UpdatedAt = DateTime.UtcNow },
+        };
+        _db.PricingLibraryItems.AddRange(items);
+        await _db.SaveChangesAsync();
+
+        var result = await _sut.ListAsync(1, 2);
+
+        result.TotalCount.Should().Be(3);
+        result.Page.Should().Be(1);
+        result.PageSize.Should().Be(2);
+        result.Items.Should().HaveCount(2);
+        result.Items[0].Title.Should().Be("Alpha");
+        result.Items[1].Title.Should().Be("Bravo");
+    }
+
+    #endregion
+}

api/tests/ProposalSystem.Tests/Validators/CreatePricingLibraryItemValidatorTests.cs

@@ -0,0 +1,239 @@
+using FluentAssertions;
+using ProposalSystem.Application.DTOs;
+using ProposalSystem.Application.Validators;
+using ProposalSystem.Domain.Entities;
+using Xunit;
+
+namespace ProposalSystem.Tests.Validators;
+
+/// <summary>
+/// PR5: Tests for CreatePricingLibraryItemValidator.
+/// </summary>
+public class CreatePricingLibraryItemValidatorTests
+{
+    private readonly CreatePricingLibraryItemValidator _sut = new();
+
+    [Fact(DisplayName = "PR5: Valid pricing library item passes validation")]
+    public void ValidRequest_Passes()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "HVAC Filter Replacement",
+            Description: "Standard 20x25x1 MERV-13 filter replacement",
+            ServiceCategory: ServiceCategory.HVAC,
+            Unit: "ea",
+            UnitPrice: 45.00m,
+            Keywords: "filter HVAC maintenance preventive",
+            Source: "Manual"
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+
+    [Fact(DisplayName = "PR5: Empty title fails validation")]
+    public void EmptyTitle_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Title");
+    }
+
+    [Fact(DisplayName = "PR5: Title exceeding 200 chars fails")]
+    public void Title_TooLong_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: new string('X', 201),
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Title");
+    }
+
+    [Fact(DisplayName = "PR5: Description exceeding 5000 chars fails")]
+    public void Description_TooLong_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: new string('X', 5001),
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Description");
+    }
+
+    [Fact(DisplayName = "PR5: Negative UnitPrice fails")]
+    public void NegativeUnitPrice_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: null,
+            ServiceCategory: ServiceCategory.Plumbing,
+            Unit: "hr",
+            UnitPrice: -10.00m,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "UnitPrice");
+    }
+
+    [Fact(DisplayName = "PR5: Zero UnitPrice is valid")]
+    public void ZeroUnitPrice_Passes()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Complimentary Inspection",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: "ea",
+            UnitPrice: 0m,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+
+    [Fact(DisplayName = "PR5: Null UnitPrice is valid")]
+    public void NullUnitPrice_Passes()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Variable Price Item",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+
+    [Fact(DisplayName = "PR5: Keywords exceeding 2000 chars fails")]
+    public void Keywords_TooLong_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: new string('X', 2001),
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Keywords");
+    }
+
+    [Fact(DisplayName = "PR5: Invalid ServiceCategory enum value fails")]
+    public void InvalidServiceCategory_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: null,
+            ServiceCategory: (ServiceCategory)999,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "ServiceCategory");
+    }
+
+    [Fact(DisplayName = "PR5: Unit exceeding 50 chars fails")]
+    public void Unit_TooLong_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: new string('X', 51),
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Unit");
+    }
+
+    [Fact(DisplayName = "PR5: Source exceeding 100 chars fails")]
+    public void Source_TooLong_Fails()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Valid Title",
+            Description: null,
+            ServiceCategory: ServiceCategory.General,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: new string('X', 101)
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Source");
+    }
+
+    [Fact(DisplayName = "PR5: Minimal valid request (title + category only) passes")]
+    public void MinimalValidRequest_Passes()
+    {
+        var request = new CreatePricingLibraryItemRequest(
+            Title: "Basic Item",
+            Description: null,
+            ServiceCategory: ServiceCategory.Other,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null,
+            Source: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+}

api/tests/ProposalSystem.Tests/Validators/UpdatePricingLibraryItemValidatorTests.cs

@@ -0,0 +1,121 @@
+using FluentAssertions;
+using ProposalSystem.Application.DTOs;
+using ProposalSystem.Application.Validators;
+using ProposalSystem.Domain.Entities;
+using Xunit;
+
+namespace ProposalSystem.Tests.Validators;
+
+/// <summary>
+/// PR5: Tests for UpdatePricingLibraryItemValidator.
+/// </summary>
+public class UpdatePricingLibraryItemValidatorTests
+{
+    private readonly UpdatePricingLibraryItemValidator _sut = new();
+
+    [Fact(DisplayName = "PR5: Valid update request passes")]
+    public void ValidRequest_Passes()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: "Updated Title",
+            Description: "Updated description",
+            ServiceCategory: ServiceCategory.Electrical,
+            Unit: "hr",
+            UnitPrice: 125.50m,
+            Keywords: "electrical wiring"
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+
+    [Fact(DisplayName = "PR5: All-null update request passes (no changes)")]
+    public void AllNullRequest_Passes()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: null,
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeTrue();
+    }
+
+    [Fact(DisplayName = "PR5: Empty title when provided fails")]
+    public void EmptyTitle_Fails()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: "",
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Title");
+    }
+
+    [Fact(DisplayName = "PR5: Title exceeding 200 chars fails")]
+    public void Title_TooLong_Fails()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: new string('X', 201),
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "Title");
+    }
+
+    [Fact(DisplayName = "PR5: Negative UnitPrice fails")]
+    public void NegativeUnitPrice_Fails()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: null,
+            Description: null,
+            ServiceCategory: null,
+            Unit: null,
+            UnitPrice: -5.00m,
+            Keywords: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "UnitPrice");
+    }
+
+    [Fact(DisplayName = "PR5: Invalid ServiceCategory enum fails")]
+    public void InvalidServiceCategory_Fails()
+    {
+        var request = new UpdatePricingLibraryItemRequest(
+            Title: null,
+            Description: null,
+            ServiceCategory: (ServiceCategory)999,
+            Unit: null,
+            UnitPrice: null,
+            Keywords: null
+        );
+
+        var result = _sut.Validate(request);
+
+        result.IsValid.Should().BeFalse();
+        result.Errors.Should().Contain(e => e.PropertyName == "ServiceCategory");
+    }
+}

lambdas/library-ingest/app.py

@@ -1,8 +1,12 @@
 """Proposal System - Library Ingest Lambda.
 
-Processes approved/sent proposals into the Bedrock Knowledge Base library.
-Formats proposal data as structured markdown and uploads to the library bucket,
-then triggers a KB sync.
+Processes approved/sent proposals and curated pricing library items into the
+Bedrock Knowledge Base library. Formats data as structured markdown and uploads
+to the library bucket, then triggers a KB sync.
+
+Supports two SQS message shapes (PR5):
+  - Proposal:     {"jobType":"library-ingest","payload":{"proposalId":"<guid>"}}
+  - Pricing item: {"jobType":"library-ingest","payload":{"pricingLibraryItemId":"<guid>"}}
 """
 
 import json
@@ -101,8 +105,24 @@ def handler(event, context):
 
         try:
             payload = body.get("payload", body)
-            proposal_id = payload["proposalId"]
-            process_ingestion(proposal_id)
+
+            # PR5: branch on payload shape — pricing item vs proposal.
+            pricing_item_id = payload.get("pricingLibraryItemId")
+            proposal_id = payload.get("proposalId")
+            if pricing_item_id and proposal_id:
+                logger.warning(
+                    "Record %s has both pricingLibraryItemId and proposalId; "
+                    "treating as a pricing item",
+                    record.get("messageId"),
+                )
+            if pricing_item_id:
+                process_pricing_item_ingestion(pricing_item_id)
+            elif proposal_id:
+                process_ingestion(proposal_id)
+            else:
+                raise ValueError(
+                    "library-ingest payload has neither pricingLibraryItemId nor proposalId"
+                )
         except Exception as e:
             # Fix: LAM-M5 — include stack trace in error logging
             logger.exception(
@@ -128,6 +148,104 @@ def process_ingestion(proposal_id: str):
         trigger_kb_sync()
 
 
+def process_pricing_item_ingestion(item_id: str):
+    """PR5: Ingest a curated pricing library item into the Bedrock Knowledge Base."""
+    item = fetch_pricing_item(item_id)
+    if not item:
+        logger.warning("Pricing library item %s not found, skipping", item_id)
+        return
+
+    document = format_pricing_item_document(item)
+
+    s3_key = upload_pricing_item_to_library(item, document)
+
+    if s3_key:
+        trigger_kb_sync()
+
+
+def fetch_pricing_item(item_id: str) -> dict | None:
+    """PR5: Fetch a pricing library item from the .NET API."""
+    try:
+        resp = _retry_request(
+            "GET",
+            f"{API_BASE_URL}/api/pricing-library/{item_id}",
+            headers=_api_headers(),
+        )
+        if resp.status_code == 200:
+            return resp.json()
+    except Exception as e:
+        logger.exception("Error fetching pricing library item: %s", e)
+    return None
+
+
+def format_pricing_item_document(item: dict) -> str:
+    """PR5: Format a pricing library item as a markdown document for Bedrock KB embedding."""
+    unit_price = item.get("unitPrice")
+    price_str = f"${unit_price:,.2f}" if unit_price is not None else "-"
+
+    keywords = item.get("keywords") or []
+    keywords_str = ", ".join(keywords) if isinstance(keywords, list) else str(keywords)
+
+    lines = [
+        f"# Pricing Item: {item.get('title', '')}",
+        "",
+        f"**Service Category:** {item.get('serviceCategory', '')}",
+        f"**Unit:** {item.get('unit', '')}",
+        f"**Unit Price:** {price_str}",
+        f"**Source:** {item.get('source', '')}",
+        "",
+        "## Description",
+        "",
+        item.get("description", ""),
+        "",
+        "## Keywords",
+        "",
+        keywords_str,
+    ]
+
+    return "\n".join(lines)
+
+
+def upload_pricing_item_to_library(item: dict, document: str) -> str | None:
+    """PR5: Upload a formatted pricing item to the library S3 bucket.
+
+    Uses the ``pricing-library/{category}/{item_id}.md`` key prefix so pricing
+    items never collide with proposal documents stored under ``proposals/``.
+    """
+    if not LIBRARY_BUCKET:
+        logger.warning("No library bucket configured")
+        return None
+
+    item_id = item.get("id", "unknown")
+    title = item.get("title", "unknown")
+    category = item.get("serviceCategory", "general")
+    s3_key = f"pricing-library/{category.lower()}/{item_id}.md"
+
+    try:
+        s3_key = _validate_s3_key(s3_key)
+    except ValueError as e:
+        logger.error("Invalid S3 key for pricing item %s: %s", item_id, e)
+        return None
+
+    try:
+        s3.put_object(
+            Bucket=LIBRARY_BUCKET,
+            Key=s3_key,
+            Body=document.encode("utf-8"),
+            ContentType="text/markdown",
+            Metadata={
+                "service-category": category,
+                "pricing-item-title": title,
+                "pricing-item-id": str(item_id),
+            },
+        )
+        logger.info("Uploaded pricing item %s to library bucket at %s", item_id, s3_key)
+        return s3_key
+    except Exception as e:
+        logger.exception("Error uploading pricing item to library: %s", e)
+        return None
+
+
 def fetch_proposal(proposal_id: str) -> dict | None:
     try:
         resp = _retry_request(

lambdas/tests/test_library_ingest.py

@@ -0,0 +1,235 @@
+"""Tests for library-ingest Lambda handler.
+
+PR5: Covers both the existing proposal ingestion path and the new pricing
+library item ingestion path.
+"""
+
+import importlib
+import sys
+import os
+from unittest.mock import patch
+
+from helpers import make_sqs_event
+
+# Import library-ingest app under a unique module name (the directory name
+# contains a hyphen so normal import won't work).
+_library_ingest_dir = os.path.join(os.path.dirname(__file__), "..", "library-ingest")
+_spec = importlib.util.spec_from_file_location(
+    "library_ingest_app", os.path.join(_library_ingest_dir, "app.py")
+)
+library_ingest_app = importlib.util.module_from_spec(_spec)
+sys.modules["library_ingest_app"] = library_ingest_app
+_spec.loader.exec_module(library_ingest_app)
+
+
+# ---------------------------------------------------------------------------
+# Sample data
+# ---------------------------------------------------------------------------
+
+SAMPLE_PRICING_ITEM = {
+    "id": "item-abc-123",
+    "title": "Standard HVAC Filter Replacement",
+    "serviceCategory": "HVAC",
+    "unit": "each",
+    "unitPrice": 85.50,
+    "description": "Replace standard 20x25 HVAC filter with MERV-13 rated filter.",
+    "keywords": ["hvac", "filter", "replacement", "merv-13"],
+    "source": "PricingLibrary",
+}
+
+
+# ---------------------------------------------------------------------------
+# Handler routing tests
+# ---------------------------------------------------------------------------
+
+
+class TestHandlerRouting:
+    """Verify the handler correctly routes pricing-item vs proposal messages."""
+
+    @patch.object(library_ingest_app, "process_pricing_item_ingestion")
+    def test_handler_routes_pricing_item_message(self, mock_process):
+        """PR5: pricingLibraryItemId in payload routes to pricing item path."""
+        event = make_sqs_event({"payload": {"pricingLibraryItemId": "item-abc-123"}})
+        result = library_ingest_app.handler(event, None)
+
+        mock_process.assert_called_once_with("item-abc-123")
+        assert result["batchItemFailures"] == []
+
+    @patch.object(library_ingest_app, "process_ingestion")
+    def test_handler_routes_proposal_message(self, mock_process):
+        """PR5: proposalId in payload still routes to existing proposal path."""
+        event = make_sqs_event({"payload": {"proposalId": "prop-xyz-789"}})
+        result = library_ingest_app.handler(event, None)
+
+        mock_process.assert_called_once_with("prop-xyz-789")
+        assert result["batchItemFailures"] == []
+
+    @patch.object(library_ingest_app, "process_pricing_item_ingestion")
+    def test_handler_pricing_item_failure_goes_to_batch_failures(self, mock_process):
+        """PR5: Pricing item processing failure adds messageId to batchItemFailures."""
+        mock_process.side_effect = RuntimeError("API unreachable")
+        event = make_sqs_event({"payload": {"pricingLibraryItemId": "item-fail"}})
+        result = library_ingest_app.handler(event, None)
+
+        assert len(result["batchItemFailures"]) == 1
+        assert result["batchItemFailures"][0]["itemIdentifier"] == "msg-0"
+
+    @patch.object(library_ingest_app, "process_pricing_item_ingestion")
+    @patch.object(library_ingest_app, "process_ingestion")
+    def test_handler_mixed_batch(self, mock_proposal, mock_pricing):
+        """PR5: A batch with both message types routes each correctly."""
+        event = make_sqs_event(
+            {"payload": {"proposalId": "prop-1"}},
+            {"payload": {"pricingLibraryItemId": "item-2"}},
+        )
+        result = library_ingest_app.handler(event, None)
+
+        mock_proposal.assert_called_once_with("prop-1")
+        mock_pricing.assert_called_once_with("item-2")
+        assert result["batchItemFailures"] == []
+
+
+# ---------------------------------------------------------------------------
+# Pricing item ingestion flow
+# ---------------------------------------------------------------------------
+
+
+class TestProcessPricingItemIngestion:
+    """Test the full pricing item ingestion pipeline."""
+
+    @patch.object(library_ingest_app, "trigger_kb_sync")
+    @patch.object(library_ingest_app, "upload_pricing_item_to_library")
+    @patch.object(library_ingest_app, "fetch_pricing_item")
+    def test_full_flow(self, mock_fetch, mock_upload, mock_sync):
+        """PR5: Happy path fetches item, formats, uploads, and triggers sync."""
+        mock_fetch.return_value = SAMPLE_PRICING_ITEM
+        mock_upload.return_value = "pricing-library/hvac/item-abc-123.md"
+
+        library_ingest_app.process_pricing_item_ingestion("item-abc-123")
+
+        mock_fetch.assert_called_once_with("item-abc-123")
+        mock_upload.assert_called_once()
+        mock_sync.assert_called_once()
+
+    @patch.object(library_ingest_app, "trigger_kb_sync")
+    @patch.object(library_ingest_app, "upload_pricing_item_to_library")
+    @patch.object(library_ingest_app, "fetch_pricing_item")
+    def test_skips_when_item_not_found(self, mock_fetch, mock_upload, mock_sync):
+        """PR5: Missing item logs warning and returns without failing the batch."""
+        mock_fetch.return_value = None
+
+        library_ingest_app.process_pricing_item_ingestion("nonexistent")
+
+        mock_upload.assert_not_called()
+        mock_sync.assert_not_called()
+
+    @patch.object(library_ingest_app, "trigger_kb_sync")
+    @patch.object(library_ingest_app, "upload_pricing_item_to_library")
+    @patch.object(library_ingest_app, "fetch_pricing_item")
+    def test_skips_sync_when_upload_fails(self, mock_fetch, mock_upload, mock_sync):
+        """PR5: No KB sync when S3 upload returns None."""
+        mock_fetch.return_value = SAMPLE_PRICING_ITEM
+        mock_upload.return_value = None
+
+        library_ingest_app.process_pricing_item_ingestion("item-abc-123")
+
+        mock_upload.assert_called_once()
+        mock_sync.assert_not_called()
+
+
+# ---------------------------------------------------------------------------
+# format_pricing_item_document
+# ---------------------------------------------------------------------------
+
+
+class TestFormatPricingItemDocument:
+    """Test markdown formatting for pricing items."""
+
+    def test_format_includes_all_fields(self):
+        """PR5: All pricing item fields appear in the formatted document."""
+        doc = library_ingest_app.format_pricing_item_document(SAMPLE_PRICING_ITEM)
+
+        assert "# Pricing Item: Standard HVAC Filter Replacement" in doc
+        assert "**Service Category:** HVAC" in doc
+        assert "**Unit:** each" in doc
+        assert "**Unit Price:** $85.50" in doc
+        assert "**Source:** PricingLibrary" in doc
+        assert "Replace standard 20x25 HVAC filter" in doc
+        assert "hvac, filter, replacement, merv-13" in doc
+
+    def test_format_handles_missing_unit_price(self):
+        """PR5: None unitPrice renders as dash."""
+        item = {**SAMPLE_PRICING_ITEM, "unitPrice": None}
+        doc = library_ingest_app.format_pricing_item_document(item)
+
+        assert "**Unit Price:** -" in doc
+
+    def test_format_handles_empty_keywords(self):
+        """PR5: Empty keywords list produces empty keywords section."""
+        item = {**SAMPLE_PRICING_ITEM, "keywords": []}
+        doc = library_ingest_app.format_pricing_item_document(item)
+
+        # Keywords section header exists, value is empty string
+        assert "## Keywords" in doc
+
+    def test_format_handles_string_keywords(self):
+        """PR5: String keywords (non-list) are rendered as-is."""
+        item = {**SAMPLE_PRICING_ITEM, "keywords": "hvac, filters"}
+        doc = library_ingest_app.format_pricing_item_document(item)
+
+        assert "hvac, filters" in doc
+
+
+# ---------------------------------------------------------------------------
+# upload_pricing_item_to_library
+# ---------------------------------------------------------------------------
+
+
+class TestUploadPricingItemToLibrary:
+    """Test S3 upload for pricing items."""
+
+    @patch.object(library_ingest_app, "s3")
+    def test_upload_uses_pricing_library_prefix(self, mock_s3):
+        """PR5: S3 key uses pricing-library/ prefix, not proposals/."""
+        original_bucket = library_ingest_app.LIBRARY_BUCKET
+        library_ingest_app.LIBRARY_BUCKET = "test-library-bucket"
+        try:
+            result = library_ingest_app.upload_pricing_item_to_library(
+                SAMPLE_PRICING_ITEM, "# Test doc"
+            )
+
+            assert result == "pricing-library/hvac/item-abc-123.md"
+            mock_s3.put_object.assert_called_once()
+            call_kwargs = mock_s3.put_object.call_args[1]
+            assert call_kwargs["Key"] == "pricing-library/hvac/item-abc-123.md"
+            assert call_kwargs["Bucket"] == "test-library-bucket"
+            assert call_kwargs["ContentType"] == "text/markdown"
+        finally:
+            library_ingest_app.LIBRARY_BUCKET = original_bucket
+
+    def test_upload_returns_none_when_no_bucket(self):
+        """PR5: Returns None when LIBRARY_BUCKET is not configured."""
+        original_bucket = library_ingest_app.LIBRARY_BUCKET
+        library_ingest_app.LIBRARY_BUCKET = ""
+        try:
+            result = library_ingest_app.upload_pricing_item_to_library(
+                SAMPLE_PRICING_ITEM, "# Test doc"
+            )
+            assert result is None
+        finally:
+            library_ingest_app.LIBRARY_BUCKET = original_bucket
+
+    @patch.object(library_ingest_app, "s3")
+    def test_upload_lowercases_category(self, mock_s3):
+        """PR5: Category in S3 key is lowercased."""
+        original_bucket = library_ingest_app.LIBRARY_BUCKET
+        library_ingest_app.LIBRARY_BUCKET = "test-bucket"
+        item = {**SAMPLE_PRICING_ITEM, "serviceCategory": "Plumbing"}
+        try:
+            result = library_ingest_app.upload_pricing_item_to_library(
+                item, "# Test doc"
+            )
+            assert result is not None
+            assert "pricing-library/plumbing/" in result
+        finally:
+            library_ingest_app.LIBRARY_BUCKET = original_bucket

shared/api-contracts/package-lock.json

@@ -0,0 +1,29 @@
+{
+  "name": "@proposal-system/api-contracts",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@proposal-system/api-contracts",
+      "version": "0.1.0",
+      "devDependencies": {
+        "typescript": "~5.7.0"
+      }
+    },
+    "node_modules/typescript": {
+      "version": "5.7.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.7.3.tgz",
+      "integrity": "sha512-84MVSjMEHP+FQRPy3pX9sTVV/INIex71s9TL2Gm5FG/WG1SqXeKyZ0k7/blY/4FdOzI12CBy1vGc4og/eus0fw==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "bin": {
+        "tsc": "bin/tsc",
+        "tsserver": "bin/tsserver"
+      },
+      "engines": {
+        "node": ">=14.17"
+      }
+    }
+  }
+}

shared/api-contracts/src/index.ts

@@ -87,3 +87,36 @@ export interface PagedResponse<T> {
   page: number;
   pageSize: number;
 }
+
+// PR5: Pricing Library types
+export interface PricingLibraryItem {
+  id: string;
+  title: string;
+  description: string | null;
+  serviceCategory: ServiceCategory;
+  unit: string | null;
+  unitPrice: number | null;
+  keywords: string | null;
+  source: string;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface CreatePricingLibraryItemRequest {
+  title: string;
+  description?: string;
+  serviceCategory: ServiceCategory;
+  unit?: string;
+  unitPrice?: number;
+  keywords?: string;
+  source?: string;
+}
+
+export interface UpdatePricingLibraryItemRequest {
+  title?: string;
+  description?: string;
+  serviceCategory?: ServiceCategory;
+  unit?: string;
+  unitPrice?: number;
+  keywords?: string;
+}

web/src/App.tsx

@@ -13,6 +13,7 @@ import ProposalListPage from './pages/proposals/list/ProposalListPage';
 import AdminDashboard from './pages/admin/dashboard/AdminDashboard';
 import AdminWorkspace from './pages/admin/workspace/AdminWorkspace';
 import CustomerManagementPage from './pages/admin/customers/CustomerManagementPage';
+import PricingLibraryPage from './pages/admin/pricing-library/PricingLibraryPage';
 
 export default function App() {
   return (
@@ -48,6 +49,7 @@ export default function App() {
                   <Route path="/admin/proposals" element={<RoleGuard roles={['Admin', 'SysAdmin']}><AdminDashboard /></RoleGuard>} />
                   <Route path="/admin/proposals/:id" element={<RoleGuard roles={['Admin', 'SysAdmin']}><AdminWorkspace /></RoleGuard>} />
                   <Route path="/admin/customers" element={<RoleGuard roles={['Admin', 'SysAdmin']}><CustomerManagementPage /></RoleGuard>} />
+                  <Route path="/admin/pricing-library" element={<RoleGuard roles={['Admin', 'SysAdmin']}><PricingLibraryPage /></RoleGuard>} />
                   <Route path="/admin/users" element={
                     <RoleGuard roles={['SysAdmin']}>
                       <Box sx={{ display: 'flex', justifyContent: 'center', pt: 6 }}>

web/src/components/Sidebar.tsx

@@ -20,6 +20,7 @@ import AdminPanelSettingsIcon from '@mui/icons-material/AdminPanelSettings';
 import AssignmentIcon from '@mui/icons-material/Assignment';
 import PeopleIcon from '@mui/icons-material/People';
 import BusinessIcon from '@mui/icons-material/Business';
+import MenuBookIcon from '@mui/icons-material/MenuBook';
 import { selectSidebarOpen, setSidebarOpen } from '../app/slices/uiSlice';
 import { selectUser } from '../app/slices/authSlice';
 import type { RootState } from '../app/store';
@@ -37,6 +38,7 @@ const adminNav = [
   { label: 'Admin Queue', path: '/admin', icon: <AdminPanelSettingsIcon fontSize="small" /> },
   { label: 'All Proposals', path: '/admin/proposals', icon: <AssignmentIcon fontSize="small" /> },
   { label: 'Customers', path: '/admin/customers', icon: <BusinessIcon fontSize="small" /> },
+  { label: 'Pricing Library', path: '/admin/pricing-library', icon: <MenuBookIcon fontSize="small" /> },
 ];
 
 const sysadminNav = [

web/src/constants/queryKeys.ts

@@ -7,4 +7,5 @@ export const QUERY_KEYS = {
   users: 'users',
   dashboard: 'dashboard',
   auditTrail: 'auditTrail',
+  pricingLibraryList: 'pricingLibraryList',
 } as const;

web/src/lib/api/pricingLibrary.ts

@@ -0,0 +1,72 @@
+import apiClient from './client';
+
+export interface PricingLibraryItem {
+  id: string;
+  title: string;
+  description?: string | null;
+  serviceCategory: string;
+  unit?: string | null;
+  unitPrice?: number | null;
+  keywords?: string | null;
+  source: string;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface PricingLibraryListParams {
+  page?: number;
+  pageSize?: number;
+}
+
+export interface PagedPricingLibraryResponse {
+  items: PricingLibraryItem[];
+  totalCount: number;
+  page: number;
+  pageSize: number;
+}
+
+export interface CreatePricingLibraryItemRequest {
+  title: string;
+  serviceCategory: string;
+  description?: string;
+  unit?: string;
+  unitPrice?: number | null;
+  keywords?: string;
+}
+
+export interface UpdatePricingLibraryItemRequest {
+  title: string;
+  serviceCategory: string;
+  description?: string;
+  unit?: string;
+  unitPrice?: number | null;
+  keywords?: string;
+}
+
+export const pricingLibraryApi = {
+  /** GET /api/pricing-library/list?page=&pageSize= — paginated list (admin/sysadmin). */
+  list: async (params: PricingLibraryListParams = {}): Promise<PagedPricingLibraryResponse> => {
+    const qs = new URLSearchParams();
+    if (params.page) qs.append('page', String(params.page));
+    if (params.pageSize) qs.append('pageSize', String(params.pageSize));
+    const res = await apiClient.get(`/pricing-library/list?${qs.toString()}`);
+    return res.data;
+  },
+
+  /** POST /api/pricing-library — create a new pricing library item. */
+  create: async (data: CreatePricingLibraryItemRequest): Promise<PricingLibraryItem> => {
+    const res = await apiClient.post('/pricing-library', data);
+    return res.data;
+  },
+
+  /** PUT /api/pricing-library/{id} — update an existing pricing library item. */
+  update: async (id: string, data: UpdatePricingLibraryItemRequest): Promise<PricingLibraryItem> => {
+    const res = await apiClient.put(`/pricing-library/${id}`, data);
+    return res.data;
+  },
+
+  /** DELETE /api/pricing-library/{id} — delete a pricing library item. */
+  remove: async (id: string): Promise<void> => {
+    await apiClient.delete(`/pricing-library/${id}`);
+  },
+};

web/src/pages/admin/pricing-library/PricingLibraryPage.tsx

@@ -0,0 +1,479 @@
+import { useState } from 'react';
+import { useQuery, useMutation } from '@tanstack/react-query';
+import {
+  Box,
+  Typography,
+  Card,
+  CardContent,
+  Table,
+  TableBody,
+  TableCell,
+  TableContainer,
+  TableHead,
+  TableRow,
+  TablePagination,
+  TextField,
+  Button,
+  Skeleton,
+  IconButton,
+  Tooltip,
+  Dialog,
+  DialogTitle,
+  DialogContent,
+  DialogActions,
+  Alert,
+  Chip,
+  MenuItem,
+} from '@mui/material';
+import AddIcon from '@mui/icons-material/Add';
+import EditIcon from '@mui/icons-material/Edit';
+import DeleteIcon from '@mui/icons-material/Delete';
+import ErrorOutlineIcon from '@mui/icons-material/ErrorOutline';
+import { toast } from 'react-toastify';
+import {
+  pricingLibraryApi,
+  type PricingLibraryItem,
+  type PagedPricingLibraryResponse,
+  type CreatePricingLibraryItemRequest,
+  type UpdatePricingLibraryItemRequest,
+} from '../../../lib/api/pricingLibrary';
+import { queryClient } from '../../../lib/queryClient';
+import { QUERY_KEYS } from '../../../constants/queryKeys';
+import { DEFAULT_PAGE, DEFAULT_PAGE_SIZE, SERVICE_CATEGORIES } from '../../../constants';
+import { useDocumentTitle } from '../../../hooks/useDocumentTitle';
+
+const COL_COUNT = 6; // Title, Category, Unit, Unit Price, Source, Actions
+
+/** Chip color mapping for service categories. */
+const CATEGORY_CHIP_STYLES: Record<string, { bgcolor: string; color: string; border: string }> = {
+  HVAC: { bgcolor: '#E0F2FE', color: '#075985', border: '1px solid #7DD3FC' },
+  Plumbing: { bgcolor: '#DBEAFE', color: '#1E40AF', border: '1px solid #BFDBFE' },
+  Electrical: { bgcolor: '#FEF9C3', color: '#854D0E', border: '1px solid #FDE68A' },
+  General: { bgcolor: '#F3F4F6', color: '#374151', border: '1px solid #D1D5DB' },
+  Renovation: { bgcolor: '#F3E8FF', color: '#6B21A8', border: '1px solid #C084FC' },
+  Other: { bgcolor: '#F1F5F9', color: '#475569', border: '1px solid #CBD5E1' },
+};
+
+interface ItemFormState {
+  title: string;
+  serviceCategory: string;
+  unit: string;
+  unitPrice: string;
+  keywords: string;
+  description: string;
+}
+
+const EMPTY_FORM: ItemFormState = {
+  title: '',
+  serviceCategory: '',
+  unit: '',
+  unitPrice: '',
+  keywords: '',
+  description: '',
+};
+
+/** Format a number as $X.XX or return "—" for null/undefined. */
+function formatPrice(value: number | null | undefined): string {
+  if (value == null) return '—';
+  return `$${value.toFixed(2)}`;
+}
+
+export default function PricingLibraryPage() {
+  useDocumentTitle('Pricing Library');
+
+  // --- List state ---
+  const [page, setPage] = useState(DEFAULT_PAGE);
+  const [pageSize, setPageSize] = useState(DEFAULT_PAGE_SIZE);
+
+  const {
+    data,
+    isLoading,
+    isError,
+    refetch,
+  } = useQuery<PagedPricingLibraryResponse>({
+    queryKey: [QUERY_KEYS.pricingLibraryList, page, pageSize],
+    queryFn: () => pricingLibraryApi.list({ page, pageSize }),
+  });
+
+  const rows = data?.items ?? [];
+  const totalCount = data?.totalCount ?? 0;
+
+  // --- Create/Edit dialog state ---
+  const [dialogOpen, setDialogOpen] = useState(false);
+  const [editingItem, setEditingItem] = useState<PricingLibraryItem | null>(null);
+  const [form, setForm] = useState<ItemFormState>(EMPTY_FORM);
+  const [formErrors, setFormErrors] = useState<Partial<Record<keyof ItemFormState, string>>>({});
+
+  const isEditing = editingItem !== null;
+
+  const openCreateDialog = () => {
+    setEditingItem(null);
+    setForm(EMPTY_FORM);
+    setFormErrors({});
+    setDialogOpen(true);
+  };
+
+  const openEditDialog = (item: PricingLibraryItem) => {
+    setEditingItem(item);
+    setForm({
+      title: item.title,
+      serviceCategory: item.serviceCategory,
+      unit: item.unit ?? '',
+      unitPrice: item.unitPrice != null ? String(item.unitPrice) : '',
+      keywords: item.keywords ?? '',
+      description: item.description ?? '',
+    });
+    setFormErrors({});
+    setDialogOpen(true);
+  };
+
+  const closeDialog = () => {
+    setDialogOpen(false);
+    setEditingItem(null);
+    setForm(EMPTY_FORM);
+    setFormErrors({});
+  };
+
+  const validateForm = (): boolean => {
+    const errors: Partial<Record<keyof ItemFormState, string>> = {};
+    if (!form.title.trim()) errors.title = 'Title is required';
+    if (!form.serviceCategory) errors.serviceCategory = 'Service category is required';
+    if (form.unitPrice.trim() !== '') {
+      const parsed = parseFloat(form.unitPrice);
+      if (isNaN(parsed) || parsed < 0) {
+        errors.unitPrice = 'Must be a number >= 0';
+      }
+    }
+    setFormErrors(errors);
+    return Object.keys(errors).length === 0;
+  };
+
+  const handleFieldChange = (field: keyof ItemFormState, value: string) => {
+    setForm((prev) => ({ ...prev, [field]: value }));
+    if (formErrors[field]) {
+      setFormErrors((prev) => {
+        const next = { ...prev };
+        delete next[field];
+        return next;
+      });
+    }
+  };
+
+  // --- Delete confirm dialog state ---
+  const [deleteTarget, setDeleteTarget] = useState<PricingLibraryItem | null>(null);
+
+  const openDeleteDialog = (item: PricingLibraryItem) => {
+    setDeleteTarget(item);
+  };
+
+  const closeDeleteDialog = () => {
+    setDeleteTarget(null);
+  };
+
+  // --- Mutations ---
+  const createMutation = useMutation({
+    mutationFn: (data: CreatePricingLibraryItemRequest) => pricingLibraryApi.create(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: [QUERY_KEYS.pricingLibraryList] });
+      closeDialog();
+      toast.success('Pricing item created');
+    },
+    onError: (error: Error) => {
+      toast.error(`Failed to create item: ${error.message}`);
+    },
+  });
+
+  const updateMutation = useMutation({
+    mutationFn: ({ id, data }: { id: string; data: UpdatePricingLibraryItemRequest }) =>
+      pricingLibraryApi.update(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: [QUERY_KEYS.pricingLibraryList] });
+      closeDialog();
+      toast.success('Pricing item updated');
+    },
+    onError: (error: Error) => {
+      toast.error(`Failed to update item: ${error.message}`);
+    },
+  });
+
+  const deleteMutation = useMutation({
+    mutationFn: (id: string) => pricingLibraryApi.remove(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: [QUERY_KEYS.pricingLibraryList] });
+      closeDeleteDialog();
+      toast.success('Pricing item deleted');
+    },
+    onError: (error: Error) => {
+      toast.error(`Failed to delete item: ${error.message}`);
+    },
+  });
+
+  const handleSubmit = () => {
+    if (!validateForm()) return;
+
+    const payload = {
+      title: form.title.trim(),
+      serviceCategory: form.serviceCategory,
+      ...(form.unit.trim() ? { unit: form.unit.trim() } : {}),
+      unitPrice: form.unitPrice.trim() !== '' ? parseFloat(form.unitPrice) : null,
+      ...(form.keywords.trim() ? { keywords: form.keywords.trim() } : {}),
+      ...(form.description.trim() ? { description: form.description.trim() } : {}),
+    };
+
+    if (isEditing) {
+      updateMutation.mutate({ id: editingItem.id, data: payload });
+    } else {
+      createMutation.mutate(payload);
+    }
+  };
+
+  const handleDeleteConfirm = () => {
+    if (deleteTarget) {
+      deleteMutation.mutate(deleteTarget.id);
+    }
+  };
+
+  const isSaving = createMutation.isPending || updateMutation.isPending;
+
+  return (
+    <Box>
+      <Box sx={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', mb: 3 }}>
+        <Typography variant="h5">Pricing Library</Typography>
+        <Button
+          variant="contained"
+          startIcon={<AddIcon />}
+          onClick={openCreateDialog}
+        >
+          New Item
+        </Button>
+      </Box>
+
+      <Card>
+        <CardContent sx={{ pb: 0 }}>
+          {/* Error state */}
+          {isError && (
+            <Alert
+              severity="error"
+              icon={<ErrorOutlineIcon />}
+              action={
+                <Button color="inherit" size="small" onClick={() => refetch()}>
+                  Retry
+                </Button>
+              }
+              sx={{ mb: 2 }}
+            >
+              Failed to load pricing library. Please try again.
+            </Alert>
+          )}
+
+          {/* Table */}
+          <TableContainer>
+            <Table size="small">
+              <TableHead>
+                <TableRow>
+                  <TableCell>Title</TableCell>
+                  <TableCell>Category</TableCell>
+                  <TableCell>Unit</TableCell>
+                  <TableCell sx={{ textAlign: 'right' }}>Unit Price</TableCell>
+                  <TableCell>Source</TableCell>
+                  <TableCell sx={{ width: 100 }} />
+                </TableRow>
+              </TableHead>
+              <TableBody>
+                {isLoading
+                  ? Array.from({ length: 5 }).map((_, i) => (
+                      <TableRow key={i}>
+                        {Array.from({ length: COL_COUNT }).map((_, j) => (
+                          <TableCell key={j}>
+                            <Skeleton variant="text" />
+                          </TableCell>
+                        ))}
+                      </TableRow>
+                    ))
+                  : rows.map((item) => {
+                      const defaultChip = { bgcolor: '#F1F5F9', color: '#475569', border: '1px solid #CBD5E1' };
+                      const chipStyle = CATEGORY_CHIP_STYLES[item.serviceCategory] ?? defaultChip;
+                      return (
+                        <TableRow key={item.id} hover>
+                          <TableCell sx={{ fontWeight: 600 }}>{item.title}</TableCell>
+                          <TableCell>
+                            <Chip
+                              label={item.serviceCategory}
+                              size="small"
+                              sx={{
+                                bgcolor: chipStyle.bgcolor,
+                                color: chipStyle.color,
+                                border: chipStyle.border,
+                                fontWeight: 600,
+                                fontSize: '12px',
+                              }}
+                            />
+                          </TableCell>
+                          <TableCell>{item.unit ?? '—'}</TableCell>
+                          <TableCell sx={{ textAlign: 'right', fontVariantNumeric: 'tabular-nums' }}>
+                            {formatPrice(item.unitPrice)}
+                          </TableCell>
+                          <TableCell>{item.source}</TableCell>
+                          <TableCell>
+                            <Box sx={{ display: 'flex', gap: 0.5 }}>
+                              <Tooltip title="Edit item" arrow>
+                                <IconButton
+                                  size="small"
+                                  onClick={() => openEditDialog(item)}
+                                >
+                                  <EditIcon fontSize="small" />
+                                </IconButton>
+                              </Tooltip>
+                              <Tooltip title="Delete item" arrow>
+                                <IconButton
+                                  size="small"
+                                  onClick={() => openDeleteDialog(item)}
+                                  color="error"
+                                >
+                                  <DeleteIcon fontSize="small" />
+                                </IconButton>
+                              </Tooltip>
+                            </Box>
+                          </TableCell>
+                        </TableRow>
+                      );
+                    })}
+                {!isLoading && rows.length === 0 && !isError && (
+                  <TableRow>
+                    <TableCell colSpan={COL_COUNT} align="center" sx={{ py: 4 }}>
+                      <Typography color="text.secondary">
+                        No pricing items yet. Click &quot;New Item&quot; to add one.
+                      </Typography>
+                    </TableCell>
+                  </TableRow>
+                )}
+              </TableBody>
+            </Table>
+          </TableContainer>
+
+          <TablePagination
+            component="div"
+            count={totalCount}
+            page={page - 1}
+            onPageChange={(_, newPage) => setPage(newPage + 1)}
+            rowsPerPage={pageSize}
+            onRowsPerPageChange={(e) => setPageSize(parseInt(e.target.value, 10))}
+            rowsPerPageOptions={[12, 24, 48]}
+          />
+        </CardContent>
+      </Card>
+
+      {/* Create / Edit Dialog */}
+      <Dialog open={dialogOpen} onClose={closeDialog} maxWidth="sm" fullWidth>
+        <DialogTitle>{isEditing ? 'Edit Pricing Item' : 'New Pricing Item'}</DialogTitle>
+        <DialogContent>
+          <Box sx={{ display: 'flex', flexDirection: 'column', gap: 2, mt: 1 }}>
+            <TextField
+              label="Title"
+              value={form.title}
+              onChange={(e) => handleFieldChange('title', e.target.value)}
+              error={!!formErrors.title}
+              helperText={formErrors.title}
+              size="small"
+              required
+              fullWidth
+              autoFocus
+            />
+            <TextField
+              label="Service Category"
+              value={form.serviceCategory}
+              onChange={(e) => handleFieldChange('serviceCategory', e.target.value)}
+              error={!!formErrors.serviceCategory}
+              helperText={formErrors.serviceCategory}
+              size="small"
+              required
+              fullWidth
+              select
+            >
+              {SERVICE_CATEGORIES.map((cat) => (
+                <MenuItem key={cat} value={cat}>
+                  {cat}
+                </MenuItem>
+              ))}
+            </TextField>
+            <TextField
+              label="Unit"
+              value={form.unit}
+              onChange={(e) => handleFieldChange('unit', e.target.value)}
+              helperText="e.g., each, hour, sq ft"
+              size="small"
+              fullWidth
+            />
+            <TextField
+              label="Unit Price"
+              type="number"
+              value={form.unitPrice}
+              onChange={(e) => handleFieldChange('unitPrice', e.target.value)}
+              error={!!formErrors.unitPrice}
+              helperText={formErrors.unitPrice || 'Optional. Leave blank if price varies.'}
+              size="small"
+              fullWidth
+              slotProps={{
+                htmlInput: { min: 0, step: '0.01' },
+              }}
+            />
+            <TextField
+              label="Keywords"
+              value={form.keywords}
+              onChange={(e) => handleFieldChange('keywords', e.target.value)}
+              helperText="Comma-separated keywords for AI matching."
+              size="small"
+              fullWidth
+              multiline
+              minRows={2}
+            />
+            <TextField
+              label="Description"
+              value={form.description}
+              onChange={(e) => handleFieldChange('description', e.target.value)}
+              size="small"
+              fullWidth
+              multiline
+              minRows={2}
+            />
+          </Box>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={closeDialog} disabled={isSaving}>
+            Cancel
+          </Button>
+          <Button
+            variant="contained"
+            onClick={handleSubmit}
+            disabled={isSaving}
+          >
+            {isSaving ? (isEditing ? 'Saving...' : 'Creating...') : isEditing ? 'Save Changes' : 'Create Item'}
+          </Button>
+        </DialogActions>
+      </Dialog>
+
+      {/* Delete Confirm Dialog */}
+      <Dialog open={deleteTarget !== null} onClose={closeDeleteDialog} maxWidth="xs" fullWidth>
+        <DialogTitle>Delete Pricing Item</DialogTitle>
+        <DialogContent>
+          <Typography>
+            Are you sure you want to delete <strong>{deleteTarget?.title}</strong>? This action cannot be undone.
+          </Typography>
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={closeDeleteDialog} disabled={deleteMutation.isPending}>
+            Cancel
+          </Button>
+          <Button
+            variant="contained"
+            color="error"
+            onClick={handleDeleteConfirm}
+            disabled={deleteMutation.isPending}
+          >
+            {deleteMutation.isPending ? 'Deleting...' : 'Delete'}
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}