refactor: move buildable .NET source into src/, update CI/doc paths

Groups the repo root into src (buildable source), docs (already existed),
and everything else (db/, scripts/, tests/, deploy/ - deployment/ops/test
assets that aren't compiled, already organized as their own folders). CI
now only needs src/ to build: dotnet restore/build/test/publish all point
at src/TaxBaik.sln, src/TaxBaik.Web/, src/TaxBaik.Proxy/.

- git mv every project (Domain, Infrastructure, Application,
  Application.Tests, Web, Web.Client, Proxy) and TaxBaik.sln into src/ as a
  unit, so relative ProjectReference/.sln paths stay valid unchanged.
- .gitea/workflows/deploy.yml: 6 dotnet restore/clean/build/test/publish
  invocations now point at src/. db/migrations and scripts/ stay at root
  (deploy_gb.sh and browser-e2e.yml only touch published output and the
  deployed URL, not source paths - verified, no changes needed there).
- scripts/validate_admin_render.sh: admin render-mode file paths now
  src/TaxBaik.Web.Client/...
- scripts/validate_kst_timestamps.sh: dropped deploy.sh from its target
  list - that script was removed in the prior cleanup commit (dead, no
  CI workflow referenced it) but this validator still expected it to exist.
- CLAUDE.md, docs/ENGINEERING_HARNESS.md, docs/ADMIN_PATTERN_CRITIQUE_WBS.md:
  updated project-structure diagram, dotnet run/build commands, and grep
  targets to the new src/ paths (also fixed a pre-existing stale path in
  ADMIN_PATTERN_CRITIQUE_WBS.md that still said TaxBaik.Web/Components/Admin
  from before that ever moved to TaxBaik.Web.Client).
- Added a Repo Root harness rule + Architecture Guardrail entries: new files
  belong under src/docs/tests/scripts/db/deploy, not loose at root; temp
  work stays outside the repo (or under a gitignored .scratch/) and is
  never committed.

Verified locally: dotnet build/test src/TaxBaik.sln (26/26 tests), and all
three scripts/validate_*.sh pass against the new layout.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/TaxBaik.Domain/Class1.cs

@@ -0,0 +1 @@
+namespace TaxBaik.Domain { }

src/TaxBaik.Domain/Entities/AdminUser.cs

@@ -0,0 +1,10 @@
+namespace TaxBaik.Domain.Entities;
+
+public class AdminUser
+{
+    public int Id { get; set; }
+    public string Username { get; set; } = null!;
+    public string PasswordHash { get; set; } = null!;
+    public DateTime? LastLoginAt { get; set; }
+    public DateTime CreatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/Announcement.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Announcement
+{
+    public int Id { get; set; }
+    public string Title { get; set; } = null!;
+    public string? Content { get; set; }
+    public string DisplayType { get; set; } = "info";
+    public bool IsActive { get; set; }
+    public DateTime? StartsAt { get; set; }
+    public DateTime? EndsAt { get; set; }
+    public int SortOrder { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/BlogPost.cs

@@ -0,0 +1,24 @@
+namespace TaxBaik.Domain.Entities;
+
+public class BlogPost
+{
+    public int Id { get; set; }
+    public string Title { get; set; } = null!;
+    public string Content { get; set; } = null!;
+    public string Slug { get; set; } = null!;
+    public int? CategoryId { get; set; }
+    public string? Tags { get; set; }
+    public int? AuthorId { get; set; }
+    public DateTime? PublishedAt { get; set; }
+    public int ViewCount { get; set; }
+    public string? SeoTitle { get; set; }
+    public string? SeoDescription { get; set; }
+    public string? ThumbnailUrl { get; set; }
+    public bool IsPublished { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    public DateTime? DeletedAt { get; set; }
+
+    // Navigation property (populated via LEFT JOIN, not stored in DB)
+    public string? CategoryName { get; set; }
+}

src/TaxBaik.Domain/Entities/Category.cs

@@ -0,0 +1,9 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Category
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = null!;
+    public string Slug { get; set; } = null!;
+    public int SortOrder { get; set; }
+}

src/TaxBaik.Domain/Entities/Client.cs

@@ -0,0 +1,30 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Client
+{
+    public int Id { get; set; }
+    public int? CompanyId { get; set; }
+    public string Name { get; set; } = "";
+    public string? CompanyName { get; set; }
+    public string? Phone { get; set; }
+    public string? Email { get; set; }
+    public string? ContactPerson { get; set; }
+    public string? ServiceType { get; set; }
+    public string? TaxType { get; set; }
+    public string Status { get; set; } = "active";
+    public string? Source { get; set; }
+    public string? Memo { get; set; }
+
+    // Tax-specific fields
+    public string? BusinessRegistrationNumber { get; set; }
+    public string? BusinessType { get; set; }
+    public DateTime? EstablishmentDate { get; set; }
+    public string? AnnualRevenueRange { get; set; }
+    public int? EmployeeCount { get; set; }
+    public DateTime? LastTaxFilingDate { get; set; }
+    public string TaxRiskLevel { get; set; } = "normal";
+    public DateTime? NextFilingDueDate { get; set; }
+
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/CommonCode.cs

@@ -0,0 +1,10 @@
+namespace TaxBaik.Domain.Entities;
+
+public class CommonCode
+{
+    public string CodeGroup { get; set; } = string.Empty;
+    public string CodeValue { get; set; } = string.Empty;
+    public string CodeName { get; set; } = string.Empty;
+    public int SortOrder { get; set; }
+    public bool IsActive { get; set; } = true;
+}

src/TaxBaik.Domain/Entities/Company.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Company
+{
+    public int Id { get; set; }
+    public string CompanyCode { get; set; } = "";
+    public string CompanyName { get; set; } = "";
+    public string? ContactPerson { get; set; }
+    public string? Phone { get; set; }
+    public string? Email { get; set; }
+    public string? Memo { get; set; }
+    public bool IsActive { get; set; } = true;
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/Consultation.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Consultation
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public DateTime ConsultationDate { get; set; }
+    public string? ServiceType { get; set; }
+    public string Summary { get; set; } = null!;
+    public string? Result { get; set; }
+    public decimal? Fee { get; set; }
+    public DateTime CreatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/ConsultingActivity.cs

@@ -0,0 +1,17 @@
+namespace TaxBaik.Domain.Entities;
+
+public class ConsultingActivity
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string ActivityType { get; set; } = "";
+    public DateTime ActivityDate { get; set; }
+    public TimeOnly? ActivityTime { get; set; }
+    public int? AssignedConsultantId { get; set; }
+    public string Description { get; set; } = "";
+    public string? Outcome { get; set; }
+    public DateTime? NextFollowupDate { get; set; }
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/Contract.cs

@@ -0,0 +1,19 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Contract
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string ContractNumber { get; set; } = "";
+    public string ServiceType { get; set; } = "";
+    public DateTime ContractDate { get; set; }
+    public DateTime StartDate { get; set; }
+    public DateTime? EndDate { get; set; }
+    public decimal? MonthlyFee { get; set; }
+    public decimal? TotalAmount { get; set; }
+    public string PaymentStatus { get; set; } = "pending";
+    public string Status { get; set; } = "active";
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/Faq.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Faq
+{
+    public int Id { get; set; }
+    public string Question { get; set; } = null!;
+    public string Answer { get; set; } = null!;
+    public string? Category { get; set; }
+    public int SortOrder { get; set; }
+    public bool IsActive { get; set; } = true;
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/Inquiry.cs

@@ -0,0 +1,17 @@
+namespace TaxBaik.Domain.Entities;
+
+public class Inquiry
+{
+    public int Id { get; set; }
+    public string Name { get; set; } = null!;
+    public string Phone { get; set; } = null!;
+    public string? Email { get; set; }
+    public string ServiceType { get; set; } = null!;
+    public string Message { get; set; } = null!;
+    public string Status { get; set; } = "new";
+    public string? IpAddress { get; set; }
+    public int? ClientId { get; set; }
+    public string? AdminMemo { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/PortalUser.cs

@@ -0,0 +1,14 @@
+namespace TaxBaik.Domain.Entities;
+
+public class PortalUser
+{
+    public int Id { get; set; }
+    public int? ClientId { get; set; }
+    public string Email { get; set; } = "";
+    public string Name { get; set; } = "";
+    public string? Phone { get; set; }
+    public string Provider { get; set; } = "local";
+    public string? ProviderId { get; set; }
+    public string? PasswordHash { get; set; }
+    public DateTime CreatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/RevenueTracking.cs

@@ -0,0 +1,17 @@
+namespace TaxBaik.Domain.Entities;
+
+public class RevenueTracking
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string InvoiceNumber { get; set; } = "";
+    public DateTime InvoiceDate { get; set; }
+    public string? ServiceType { get; set; }
+    public decimal Amount { get; set; }
+    public string PaymentStatus { get; set; } = "pending";
+    public DateTime? PaymentDate { get; set; }
+    public DateTime? DueDate { get; set; }
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/SiteSetting.cs

@@ -0,0 +1,8 @@
+namespace TaxBaik.Domain.Entities;
+
+public class SiteSetting
+{
+    public string Key { get; set; } = null!;
+    public string Value { get; set; } = null!;
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/TaxFiling.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Entities;
+
+public class TaxFiling
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string FilingType { get; set; } = null!;
+    public DateTime DueDate { get; set; }
+    public string Status { get; set; } = "pending";
+    public string? Memo { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+    // join
+    public string? ClientName { get; set; }
+}

src/TaxBaik.Domain/Entities/TaxFilingSchedule.cs

@@ -0,0 +1,16 @@
+namespace TaxBaik.Domain.Entities;
+
+public class TaxFilingSchedule
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string FilingType { get; set; } = "";
+    public DateTime DueDate { get; set; }
+    public int FilingYear { get; set; }
+    public string Status { get; set; } = "pending";
+    public int? AssignedToId { get; set; }
+    public DateTime? CompletedDate { get; set; }
+    public string? Notes { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Entities/TaxProfile.cs

@@ -0,0 +1,21 @@
+namespace TaxBaik.Domain.Entities;
+
+public class TaxProfile
+{
+    public int Id { get; set; }
+    public int ClientId { get; set; }
+    public string? BusinessRegistration { get; set; }
+    public string? BusinessType { get; set; }
+    public DateTime? EstablishmentDate { get; set; }
+    public string? AnnualRevenueRange { get; set; }
+    public int? EmployeeCount { get; set; }
+    public string? AccountingMethod { get; set; }
+    public string? FiscalYearEnd { get; set; }
+    public DateTime? LastFilingDate { get; set; }
+    public DateTime? NextFilingDueDate { get; set; }
+    public string TaxRiskLevel { get; set; } = "normal";
+    public bool PreviousAuditHistory { get; set; }
+    public string? SpecialNotes { get; set; }
+    public DateTime CreatedAt { get; set; }
+    public DateTime UpdatedAt { get; set; }
+}

src/TaxBaik.Domain/Enums/InquiryStatus.cs

@@ -0,0 +1,10 @@
+namespace TaxBaik.Domain.Enums;
+
+public enum InquiryStatus
+{
+    New = 0,
+    Consulting = 1,
+    Contracted = 2,
+    Rejected = 3,
+    Closed = 4
+}

src/TaxBaik.Domain/Enums/ServiceType.cs

@@ -0,0 +1,11 @@
+namespace TaxBaik.Domain.Enums;
+
+public enum ServiceType
+{
+    Bookkeeping = 0,       // 기장
+    IncomeTax = 1,         // 종소세
+    VatTax = 2,            // 부가세
+    CapitalGainsTax = 3,   // 양도세
+    GiftInheritanceTax = 4,// 증여·상속
+    Other = 5              // 기타
+}

src/TaxBaik.Domain/Interfaces/IAdminUserRepository.cs

@@ -0,0 +1,10 @@
+namespace TaxBaik.Domain.Interfaces;
+
+public interface IAdminUserRepository
+{
+    Task<Entities.AdminUser?> GetByUsernameAsync(string username);
+    Task<Entities.AdminUser?> GetByIdAsync(int id);
+    Task CreateAsync(Entities.AdminUser user);
+    Task UpdatePasswordHashAsync(int id, string passwordHash);
+    Task UpdateLastLoginAtAsync(int id);
+}

src/TaxBaik.Domain/Interfaces/IAnnouncementRepository.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IAnnouncementRepository
+{
+    Task<IEnumerable<Announcement>> GetActiveAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<Announcement>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<Announcement?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<int> CreateAsync(Announcement announcement, CancellationToken cancellationToken = default);
+    Task UpdateAsync(Announcement announcement, CancellationToken cancellationToken = default);
+    Task DeleteAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IBlogPostRepository.cs

@@ -0,0 +1,23 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IBlogPostRepository
+{
+    Task<BlogPost?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<BlogPost?> GetBySlugAsync(string slug, CancellationToken cancellationToken = default);
+    Task<(IEnumerable<BlogPost> Items, int Total)> GetPublishedPagedAsync(
+        int page, int pageSize, int? categoryId = null, CancellationToken cancellationToken = default);
+    Task<IEnumerable<BlogPost>> GetByCategorySlugAsync(string categorySlug, int limit, CancellationToken cancellationToken = default);
+    Task<IEnumerable<BlogPost>> GetAllForAdminAsync(CancellationToken cancellationToken = default);
+    Task<(IEnumerable<BlogPost> Items, int Total)> GetAdminPagedAsync(
+        int page, int pageSize, CancellationToken cancellationToken = default);
+    Task<(IEnumerable<BlogPost> Items, int Total)> GetArchivedPagedAsync(
+        int page, int pageSize, CancellationToken cancellationToken = default);
+    Task<int> CreateAsync(BlogPost post, CancellationToken cancellationToken = default);
+    Task UpdateAsync(BlogPost post, CancellationToken cancellationToken = default);
+    Task DeleteAsync(int id, CancellationToken cancellationToken = default);
+    Task ArchiveAsync(int id, CancellationToken cancellationToken = default);
+    Task RestoreAsync(int id, CancellationToken cancellationToken = default);
+    Task IncrementViewCountAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/ICategoryRepository.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface ICategoryRepository
+{
+    Task<IEnumerable<Category>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<Category?> GetBySlugAsync(string slug, CancellationToken cancellationToken = default);
+    Task<Category?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<int> CreateAsync(Category category, CancellationToken cancellationToken = default);
+    Task UpdateAsync(Category category, CancellationToken cancellationToken = default);
+    Task DeleteAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IClientRepository.cs

@@ -0,0 +1,17 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IClientRepository
+{
+    Task<(IEnumerable<Client> Items, int Total)> GetPagedAsync(
+        int page, int pageSize, string? status = null, string? search = null,
+        CancellationToken ct = default);
+    Task<Client?> GetByIdAsync(int id, CancellationToken ct = default);
+    Task<Client?> GetByEmailAsync(string email, CancellationToken ct = default);
+    Task<Client?> GetByPhoneAsync(string phone, CancellationToken ct = default);
+    Task<int> CountByCreatedAtRangeAsync(DateTime startDateUtc, DateTime endDateUtc, CancellationToken ct = default);
+    Task<int> CreateAsync(Client client, CancellationToken ct = default);
+    Task UpdateAsync(Client client, CancellationToken ct = default);
+    Task DeleteAsync(int id, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/ICommonCodeRepository.cs

@@ -0,0 +1,16 @@
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+using TaxBaik.Domain.Entities;
+
+namespace TaxBaik.Domain.Interfaces;
+
+public interface ICommonCodeRepository
+{
+    Task<IEnumerable<string>> GetAllGroupsAsync(CancellationToken ct = default);
+    Task<IEnumerable<CommonCode>> GetByGroupAsync(string codeGroup, CancellationToken ct = default);
+    Task<IEnumerable<CommonCode>> GetAllActiveAsync(CancellationToken ct = default);
+    Task<CommonCode?> GetAsync(string codeGroup, string codeValue, CancellationToken ct = default);
+    Task UpsertAsync(CommonCode code, CancellationToken ct = default);
+    Task DeleteAsync(string codeGroup, string codeValue, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/ICompanyRepository.cs

@@ -0,0 +1,14 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface ICompanyRepository
+{
+    Task<int> CreateAsync(Company company, CancellationToken cancellationToken = default);
+    Task<Company?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<Company?> GetByCodeAsync(string code, CancellationToken cancellationToken = default);
+    Task<IEnumerable<Company>> GetAllActiveAsync(CancellationToken cancellationToken = default);
+    Task<(IEnumerable<Company> Items, int Total)> GetPagedAsync(int page, int pageSize, CancellationToken cancellationToken = default);
+    Task UpdateAsync(Company company, CancellationToken cancellationToken = default);
+    Task DeleteAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IConsultationRepository.cs

@@ -0,0 +1,10 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IConsultationRepository
+{
+    Task<IEnumerable<Consultation>> GetByClientIdAsync(int clientId, CancellationToken ct = default);
+    Task<int> CreateAsync(Consultation consultation, CancellationToken ct = default);
+    Task DeleteAsync(int id, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/IConsultingActivityRepository.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IConsultingActivityRepository
+{
+    Task<int> CreateAsync(ConsultingActivity activity, CancellationToken cancellationToken = default);
+    Task<IEnumerable<ConsultingActivity>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<ConsultingActivity>> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
+    Task<IEnumerable<ConsultingActivity>> GetPendingFollowupsAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<ConsultingActivity>> GetByConsultantAsync(int consultantId, DateTime fromDate, CancellationToken cancellationToken = default);
+    Task UpdateAsync(ConsultingActivity activity, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IContractRepository.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IContractRepository
+{
+    Task<int> CreateAsync(Contract contract, CancellationToken cancellationToken = default);
+    Task<IEnumerable<Contract>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<Contract?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<IEnumerable<Contract>> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
+    Task<IEnumerable<Contract>> GetActiveContractsAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<Contract>> GetExpiringContractsAsync(int daysAhead = 30, CancellationToken cancellationToken = default);
+    Task UpdateAsync(Contract contract, CancellationToken cancellationToken = default);
+    Task<decimal> GetMonthlyRecurringRevenueAsync(CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IDbConnectionFactory.cs

@@ -0,0 +1,8 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using System.Data;
+
+public interface IDbConnectionFactory
+{
+    IDbConnection CreateConnection();
+}

src/TaxBaik.Domain/Interfaces/IFaqRepository.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IFaqRepository
+{
+    Task<IEnumerable<Faq>> GetActiveAsync(CancellationToken ct = default);
+    Task<IEnumerable<Faq>> GetAllAsync(CancellationToken ct = default);
+    Task<Faq?> GetByIdAsync(int id, CancellationToken ct = default);
+    Task<int> CreateAsync(Faq faq, CancellationToken ct = default);
+    Task UpdateAsync(Faq faq, CancellationToken ct = default);
+    Task DeleteAsync(int id, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/IInquiryRepository.cs

@@ -0,0 +1,21 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IInquiryRepository
+{
+    Task<int> CreateAsync(Inquiry inquiry, CancellationToken cancellationToken = default);
+    Task<Inquiry?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<(IEnumerable<Inquiry> Items, int Total)> GetPagedAsync(
+        int page, int pageSize, string? status = null, CancellationToken cancellationToken = default);
+    Task<int> CountAsync(CancellationToken cancellationToken = default);
+    Task<int> CountThisMonthAsync(CancellationToken cancellationToken = default);
+    Task<int> CountByStatusAsync(string status, CancellationToken cancellationToken = default);
+    Task<int> CountByDateRangeAsync(DateTime startDate, DateTime endDate, CancellationToken cancellationToken = default);
+    Task<int> CountByStatusAndDateAsync(string status, DateTime startDate, DateTime endDate, CancellationToken cancellationToken = default);
+    Task UpdateStatusAsync(int id, string status, CancellationToken cancellationToken = default);
+    Task UpdateAdminMemoAsync(int id, string? adminMemo, CancellationToken cancellationToken = default);
+    Task UpdateAsync(Inquiry inquiry, CancellationToken cancellationToken = default);
+    Task LinkClientAsync(int inquiryId, int clientId, CancellationToken cancellationToken = default);
+    Task DeleteAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/IPortalUserRepository.cs

@@ -0,0 +1,12 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IPortalUserRepository
+{
+    Task<PortalUser?> GetByIdAsync(int id, CancellationToken ct = default);
+    Task<PortalUser?> GetByEmailAsync(string email, CancellationToken ct = default);
+    Task<PortalUser?> GetByProviderAsync(string provider, string providerId, CancellationToken ct = default);
+    Task<int> CreateAsync(PortalUser user, CancellationToken ct = default);
+    Task UpdateAsync(PortalUser user, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/IRevenueTrackingRepository.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface IRevenueTrackingRepository
+{
+    Task<int> CreateAsync(RevenueTracking revenue, CancellationToken cancellationToken = default);
+    Task<IEnumerable<RevenueTracking>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<RevenueTracking>> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
+    Task<IEnumerable<RevenueTracking>> GetPendingPaymentsAsync(CancellationToken cancellationToken = default);
+    Task<IEnumerable<RevenueTracking>> GetByDateRangeAsync(DateTime startDate, DateTime endDate, CancellationToken cancellationToken = default);
+    Task UpdateAsync(RevenueTracking revenue, CancellationToken cancellationToken = default);
+    Task MarkPaidAsync(int id, DateTime paymentDate, CancellationToken cancellationToken = default);
+    Task<decimal> GetTotalRevenueAsync(DateTime startDate, DateTime endDate, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/ISiteSettingRepository.cs

@@ -0,0 +1,9 @@
+using TaxBaik.Domain.Entities;
+
+namespace TaxBaik.Domain.Interfaces;
+
+public interface ISiteSettingRepository
+{
+    Task<IReadOnlyDictionary<string, string>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task UpsertAsync(IEnumerable<SiteSetting> settings, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/ITaxFilingRepository.cs

@@ -0,0 +1,13 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface ITaxFilingRepository
+{
+    Task<IEnumerable<TaxFiling>> GetByClientIdAsync(int clientId, CancellationToken ct = default);
+    Task<IEnumerable<TaxFiling>> GetUpcomingAsync(int daysAhead, CancellationToken ct = default);
+    Task<TaxFiling?> GetByIdAsync(int id, CancellationToken ct = default);
+    Task<int> CreateAsync(TaxFiling filing, CancellationToken ct = default);
+    Task UpdateAsync(TaxFiling filing, CancellationToken ct = default);
+    Task DeleteAsync(int id, CancellationToken ct = default);
+}

src/TaxBaik.Domain/Interfaces/ITaxFilingScheduleRepository.cs

@@ -0,0 +1,15 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface ITaxFilingScheduleRepository
+{
+    Task<int> CreateAsync(TaxFilingSchedule schedule, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxFilingSchedule>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<TaxFilingSchedule?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxFilingSchedule>> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxFilingSchedule>> GetUpcomingDuesAsync(int daysAhead = 30, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxFilingSchedule>> GetByStatusAsync(string status, CancellationToken cancellationToken = default);
+    Task UpdateAsync(TaxFilingSchedule schedule, CancellationToken cancellationToken = default);
+    Task MarkCompletedAsync(int id, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/Interfaces/ITaxProfileRepository.cs

@@ -0,0 +1,14 @@
+namespace TaxBaik.Domain.Interfaces;
+
+using TaxBaik.Domain.Entities;
+
+public interface ITaxProfileRepository
+{
+    Task<int> CreateAsync(TaxProfile profile, CancellationToken cancellationToken = default);
+    Task<TaxProfile?> GetByIdAsync(int id, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxProfile>> GetAllAsync(CancellationToken cancellationToken = default);
+    Task<TaxProfile?> GetByClientIdAsync(int clientId, CancellationToken cancellationToken = default);
+    Task UpdateAsync(TaxProfile profile, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxProfile>> GetByRiskLevelAsync(string riskLevel, CancellationToken cancellationToken = default);
+    Task<IEnumerable<TaxProfile>> GetUpcomingFilingDuesAsync(DateTime startDate, DateTime endDate, CancellationToken cancellationToken = default);
+}

src/TaxBaik.Domain/TaxBaik.Domain.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net10.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+</Project>