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.Web/Pages/Portal/ExternalCallback.cshtml

@@ -0,0 +1,9 @@
+@page "/portal/external-callback"
+@model TaxBaik.Web.Pages.Portal.ExternalCallbackModel
+@{
+    ViewData["Title"] = "포털 인증 처리";
+}
+
+<section class="container py-5">
+    <div class="alert alert-info">인증을 처리하는 중입니다...</div>
+</section>

src/TaxBaik.Web/Pages/Portal/ExternalCallback.cshtml.cs

@@ -0,0 +1,97 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TaxBaik.Application.Services;
+using TaxBaik.Web.Services;
+
+namespace TaxBaik.Web.Pages.Portal;
+
+public class ExternalCallbackModel : PageModel
+{
+    private readonly PortalUserService _portalUserService;
+    private readonly ClientService _clientService;
+
+    public ExternalCallbackModel(PortalUserService portalUserService, ClientService clientService)
+    {
+        _portalUserService = portalUserService;
+        _clientService = clientService;
+    }
+
+    public async Task<IActionResult> OnGetAsync(string provider)
+    {
+        var external = await HttpContext.AuthenticateAsync(PortalOAuthDefaults.ExternalScheme);
+        if (external?.Principal is null)
+            return RedirectToPage("/Portal/Login");
+
+        var email = external.Principal.FindFirstValue(ClaimTypes.Email);
+        var name = external.Principal.FindFirstValue(ClaimTypes.Name) ?? "고객";
+        var providerId = external.Principal.FindFirstValue(ClaimTypes.NameIdentifier) ?? "";
+
+        if (string.IsNullOrWhiteSpace(providerId))
+            return RedirectToPage("/Portal/Login");
+
+        var existing = await _portalUserService.GetByProviderAsync(provider, providerId);
+        if (existing is null && !string.IsNullOrWhiteSpace(email))
+        {
+            existing = await _portalUserService.GetByEmailAsync(email);
+            if (existing is null)
+            {
+                int? clientId = null;
+                var linkedClient = await _clientService.GetByEmailAsync(email);
+                if (linkedClient is null && !string.IsNullOrWhiteSpace(external.Principal.FindFirstValue("phone")))
+                    linkedClient = await _clientService.GetByPhoneAsync(external.Principal.FindFirstValue("phone")!);
+                if (linkedClient is not null)
+                    clientId = linkedClient.Id;
+
+                await _portalUserService.RegisterOAuthAsync(
+                    name,
+                    email,
+                    external.Principal.FindFirstValue("phone") ?? "",
+                    provider,
+                    providerId,
+                    clientId);
+                existing = await _portalUserService.GetByEmailAsync(email);
+            }
+            else if (!string.Equals(existing.Provider, provider, StringComparison.OrdinalIgnoreCase) ||
+                     !string.Equals(existing.ProviderId, providerId, StringComparison.OrdinalIgnoreCase))
+            {
+                await _portalUserService.LinkOAuthAsync(existing, provider, providerId, name, email);
+            }
+        }
+
+        if (existing is not null && !existing.ClientId.HasValue && !string.IsNullOrWhiteSpace(email))
+        {
+            var linkedClient = await _clientService.GetByEmailAsync(email);
+            if (linkedClient is null && !string.IsNullOrWhiteSpace(external.Principal.FindFirstValue("phone")))
+                linkedClient = await _clientService.GetByPhoneAsync(external.Principal.FindFirstValue("phone")!);
+            if (linkedClient is not null)
+            {
+                await _portalUserService.AttachClientAsync(existing, linkedClient.Id);
+                existing.ClientId = linkedClient.Id;
+            }
+        }
+
+        if (existing is null)
+            return RedirectToPage("/Portal/Login");
+
+        var claims = new List<Claim>
+        {
+            new(ClaimTypes.NameIdentifier, existing.Id.ToString()),
+            new(ClaimTypes.Name, existing.Name),
+            new(ClaimTypes.Email, existing.Email),
+            new("portal_user_id", existing.Id.ToString())
+        };
+
+        if (existing.ClientId.HasValue)
+            claims.Add(new("client_id", existing.ClientId.Value.ToString()));
+
+        await HttpContext.SignInAsync(
+            PortalAuthDefaults.Scheme,
+            new ClaimsPrincipal(new ClaimsIdentity(claims, PortalAuthDefaults.Scheme)),
+            new AuthenticationProperties { IsPersistent = true });
+
+        await HttpContext.SignOutAsync(PortalOAuthDefaults.ExternalScheme);
+        return RedirectToPage("/Portal/Index");
+    }
+}

src/TaxBaik.Web/Pages/Portal/Index.cshtml

@@ -0,0 +1,167 @@
+@page "/portal"
+@model TaxBaik.Web.Pages.Portal.IndexModel
+@{
+    ViewData["Title"] = "마이 포털 - 세무사 백원숙";
+    ViewData["Description"] = "고객님의 세무 신고 일정과 상담 이력을 실시간으로 확인하실 수 있는 마이페이지입니다.";
+}
+
+<div class="bg-light py-5">
+    <div class="container">
+        <!-- 상단 헤더 & 환영 문구 -->
+        <div class="d-flex flex-wrap justify-content-between align-items-center mb-5 pb-4 border-bottom">
+            <div>
+                <p class="text-primary fw-bold mb-1">TaxBaik My Portal</p>
+                <h1 class="display-6 fw-bold text-dark">안녕하세요, @(User.Identity?.Name)님!</h1>
+                @if (Model.ClientInfo != null)
+                {
+                    <p class="text-muted mb-0">
+                        <i class="bi bi-building"></i> @(string.IsNullOrEmpty(Model.ClientInfo.CompanyName) ? "개인 고객" : Model.ClientInfo.CompanyName) 
+                        | <i class="bi bi-telephone"></i> @Model.ClientInfo.Phone
+                    </p>
+                }
+            </div>
+            <div class="mt-3 mt-sm-0">
+                <form method="post" action="/taxbaik/portal/logout" class="d-inline">
+                    @Html.AntiForgeryToken()
+                    <button type="submit" class="btn btn-outline-danger btn-sm">
+                        <i class="bi bi-box-arrow-right"></i> 로그아웃
+                    </button>
+                </form>
+            </div>
+        </div>
+
+        @if (Model.ClientInfo == null)
+        {
+            <!-- 연동 대기 경고 -->
+            <div class="card border-warning shadow-sm mb-5">
+                <div class="card-body p-5 text-center">
+                    <div class="mb-4">
+                        <span class="display-1 text-warning"><i class="bi bi-exclamation-triangle-fill"></i></span>
+                    </div>
+                    <h3 class="fw-bold text-dark mb-3">고객 정보 연동 대기 중</h3>
+                    <p class="text-muted max-width-md mx-auto mb-4">
+                        가입하신 계정 정보(이메일/연락처)와 일치하는 세무 대리 고객 레코드를 찾지 못했습니다.<br />
+                        세무사 측에서 고객 등록을 완료하거나 관리자 백오피스에서 이메일/전화번호가 일치하도록 지정하면 자동으로 포털 데이터가 활성화됩니다.
+                    </p>
+                    <a href="/taxbaik/contact" class="btn btn-primary px-4 py-2">
+                        <i class="bi bi-chat-dots"></i> 세무사에게 문의하기
+                    </a>
+                </div>
+            </div>
+        }
+        else
+        {
+            <div class="row g-4">
+                <!-- 왼쪽: 세무 신고 현황 (Tax Filings) -->
+                <div class="col-lg-8">
+                    <div class="card glass-card mb-4">
+                        <div class="card-body p-4">
+                            <div class="d-flex justify-content-between align-items-center mb-4">
+                                <h3 class="h5 fw-bold text-dark mb-0">
+                                    <i class="bi bi-calendar-check text-primary me-2"></i> 나의 세무 신고 현황
+                                </h3>
+                                <span class="badge bg-secondary">총 @(Model.Filings.Count)건</span>
+                            </div>
+
+                            @if (!Model.Filings.Any())
+                            {
+                                <div class="text-center py-5 text-muted">
+                                    <i class="bi bi-folder-x display-4 d-block mb-3 text-secondary"></i>
+                                    등록된 세무 신고 일정이 없습니다.
+                                </div>
+                            }
+                            else
+                            {
+                                <div class="table-responsive">
+                                    <table class="table table-hover align-middle">
+                                        <thead class="table-light">
+                                            <tr>
+                                                <th scope="col">신고 종류</th>
+                                                <th scope="col">신고 기한</th>
+                                                <th scope="col">진행 상태</th>
+                                                <th scope="col">메모</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            @foreach (var filing in Model.Filings)
+                                            {
+                                                var dDay = (filing.DueDate - DateTime.Today).Days;
+                                                var statusClass = filing.Status switch
+                                                {
+                                                    "filed" => "bg-success-subtle text-success",
+                                                    "overdue" => "bg-danger-subtle text-danger",
+                                                    _ => "bg-warning-subtle text-warning-emphasis"
+                                                };
+                                                var statusLabel = filing.Status switch
+                                                {
+                                                    "filed" => "신고 완료",
+                                                    "overdue" => "기한 초과",
+                                                    _ => $"D-{dDay}"
+                                                };
+
+                                                <tr>
+                                                    <td>
+                                                        <span class="fw-bold text-dark">@filing.FilingType</span>
+                                                    </td>
+                                                    <td>
+                                                        <span>@filing.DueDate.ToString("yyyy-MM-dd")</span>
+                                                    </td>
+                                                    <td>
+                                                        <span class="badge @statusClass px-2.5 py-1.5 fs-7">@statusLabel</span>
+                                                    </td>
+                                                    <td class="text-muted small">
+                                                        @(string.IsNullOrEmpty(filing.Memo) ? "-" : filing.Memo)
+                                                    </td>
+                                                </tr>
+                                            }
+                                        </tbody>
+                                    </table>
+                                </div>
+                            }
+                        </div>
+                    </div>
+                </div>
+
+                <!-- 오른쪽: 상담 이력 요약 (Consulting Activities) -->
+                <div class="col-lg-4">
+                    <div class="card glass-card">
+                        <div class="card-body p-4">
+                            <h3 class="h5 fw-bold text-dark mb-4">
+                                <i class="bi bi-chat-text text-primary me-2"></i> 최근 상담 및 지원 이력
+                            </h3>
+
+                            @if (!Model.Consultations.Any())
+                            {
+                                <div class="text-center py-5 text-muted">
+                                    <i class="bi bi-chat-square-dots display-4 d-block mb-3 text-secondary"></i>
+                                    최근 상담 이력이 없습니다.
+                                </div>
+                            }
+                            else
+                            {
+                                <div class="timeline ps-2">
+                                    @foreach (var activity in Model.Consultations)
+                                    {
+                                        <div class="timeline-item-modern">
+                                            <div class="d-flex justify-content-between align-items-center mb-1">
+                                                <span class="badge bg-primary-subtle text-primary small">@activity.ActivityType</span>
+                                                <small class="text-muted">@activity.ActivityDate.ToString("yyyy-MM-dd")</small>
+                                            </div>
+                                            <p class="text-dark small mb-1 fw-semibold">@activity.Description</p>
+                                            @if (!string.IsNullOrEmpty(activity.Outcome))
+                                            {
+                                                <div class="bg-light p-2 rounded small text-muted mt-1">
+                                                    <strong>결과:</strong> @activity.Outcome
+                                                </div>
+                                            }
+                                        </div>
+                                    }
+                                </div>
+                            }
+                        </div>
+                    </div>
+                </div>
+            </div>
+        }
+    </div>
+</div>

src/TaxBaik.Web/Pages/Portal/Index.cshtml.cs

@@ -0,0 +1,49 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TaxBaik.Application.Services;
+using TaxBaik.Domain.Entities;
+using TaxBaik.Web.Services;
+
+namespace TaxBaik.Web.Pages.Portal;
+
+[Authorize(AuthenticationSchemes = PortalAuthDefaults.Scheme)]
+public class IndexModel : PageModel
+{
+    private readonly TaxFilingService _taxFilingService;
+    private readonly ConsultingActivityService _consultingActivityService;
+    private readonly ClientService _clientService;
+
+    public IndexModel(
+        TaxFilingService taxFilingService,
+        ConsultingActivityService consultingActivityService,
+        ClientService clientService)
+    {
+        _taxFilingService = taxFilingService;
+        _consultingActivityService = consultingActivityService;
+        _clientService = clientService;
+    }
+
+    public Client? ClientInfo { get; private set; }
+    public List<TaxFiling> Filings { get; private set; } = new();
+    public List<ConsultingActivity> Consultations { get; private set; } = new();
+
+    public async Task<IActionResult> OnGetAsync()
+    {
+        var clientIdClaim = User.FindFirst("client_id");
+        if (clientIdClaim != null && int.TryParse(clientIdClaim.Value, out var clientId))
+        {
+            ClientInfo = await _clientService.GetByIdAsync(clientId);
+            if (ClientInfo != null)
+            {
+                var filingsData = await _taxFilingService.GetByClientIdAsync(clientId);
+                Filings = filingsData.OrderBy(f => f.DueDate).ToList();
+
+                var consultationsData = await _consultingActivityService.GetByClientIdAsync(clientId);
+                Consultations = consultationsData.OrderByDescending(c => c.ActivityDate).ToList();
+            }
+        }
+        return Page();
+    }
+}

src/TaxBaik.Web/Pages/Portal/Login.cshtml

@@ -0,0 +1,40 @@
+@page "/portal/login"
+@model TaxBaik.Web.Pages.Portal.LoginModel
+@{
+    ViewData["Title"] = "고객 포털 로그인";
+    ViewData["Description"] = "고객 포털 로그인 페이지입니다.";
+    ViewData["CanonicalUrl"] = $"{Request.Scheme}://{Request.Host}/taxbaik/portal/login";
+}
+
+<section class="container py-5" style="max-width: 560px;">
+    <h1 class="h3 fw-bold mb-4">고객 포털 로그인</h1>
+    <div class="alert alert-secondary">
+        포털 인증은 다음 단계에서 이메일/비밀번호와 소셜 로그인으로 연결됩니다.
+    </div>
+    @if (!string.IsNullOrWhiteSpace(Model.ErrorMessage))
+    {
+        <div class="alert alert-danger">@Model.ErrorMessage</div>
+    }
+    <form method="post" class="vstack gap-3">
+        <div>
+            <label class="form-label">이메일</label>
+            <input class="form-control" asp-for="Email" />
+        </div>
+        <div>
+            <label class="form-label">비밀번호</label>
+            <input class="form-control" asp-for="Password" type="password" />
+        </div>
+        <button class="btn btn-dark" type="submit">로그인</button>
+    </form>
+    <div class="d-grid gap-2 mt-4">
+        <form method="post" asp-page-handler="Google">
+            <button class="btn btn-outline-dark w-100" type="submit">Google로 로그인</button>
+        </form>
+        <form method="post" asp-page-handler="Naver">
+            <button class="btn btn-outline-success w-100" type="submit">Naver로 로그인</button>
+        </form>
+        <form method="post" asp-page-handler="Kakao">
+            <button class="btn btn-outline-warning w-100" type="submit">Kakao로 로그인</button>
+        </form>
+    </div>
+</section>

src/TaxBaik.Web/Pages/Portal/Login.cshtml.cs

@@ -0,0 +1,56 @@
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TaxBaik.Web.Services;
+
+namespace TaxBaik.Web.Pages.Portal;
+
+public class LoginModel : PageModel
+{
+    private readonly PortalAuthService _portalAuthService;
+
+    [BindProperty]
+    public string Email { get; set; } = "";
+
+    [BindProperty]
+    public string Password { get; set; } = "";
+
+    [BindProperty]
+    public string? ErrorMessage { get; set; }
+
+    public LoginModel(PortalAuthService portalAuthService)
+    {
+        _portalAuthService = portalAuthService;
+    }
+
+    public void OnGet()
+    {
+    }
+
+    public async Task<IActionResult> OnPostAsync()
+    {
+        if (string.IsNullOrWhiteSpace(Email) || string.IsNullOrWhiteSpace(Password))
+        {
+            ErrorMessage = "이메일과 비밀번호를 입력하세요.";
+            return Page();
+        }
+
+        var signedIn = await _portalAuthService.SignInAsync(Email, Password);
+        if (!signedIn)
+        {
+            ErrorMessage = "로그인 정보를 확인할 수 없습니다.";
+            return Page();
+        }
+
+        return RedirectToPage("/Portal/Index");
+    }
+
+    public IActionResult OnPostGoogle() => Challenge(BuildProps("google"), PortalOAuthDefaults.GoogleScheme);
+
+    public IActionResult OnPostNaver() => Challenge(BuildProps("naver"), PortalOAuthDefaults.NaverScheme);
+
+    public IActionResult OnPostKakao() => Challenge(BuildProps("kakao"), PortalOAuthDefaults.KakaoScheme);
+
+    private static AuthenticationProperties BuildProps(string provider) =>
+        new() { RedirectUri = $"/taxbaik/portal/external-callback?provider={provider}" };
+}

src/TaxBaik.Web/Pages/Portal/Register.cshtml

@@ -0,0 +1,35 @@
+@page "/portal/register"
+@model TaxBaik.Web.Pages.Portal.RegisterModel
+@{
+    ViewData["Title"] = "고객 포털 회원가입";
+    ViewData["Description"] = "고객 포털 회원가입 페이지입니다.";
+    ViewData["CanonicalUrl"] = $"{Request.Scheme}://{Request.Host}/taxbaik/portal/register";
+}
+
+<section class="container py-5" style="max-width: 640px;">
+    <h1 class="h3 fw-bold mb-4">고객 포털 회원가입</h1>
+    <div class="alert alert-secondary">
+        가입 흐름은 다음 단계에서 이메일/전화번호 검증과 소셜 로그인으로 확장합니다.
+    </div>
+    <form method="post" class="row g-3">
+        <div class="col-md-6">
+            <label class="form-label">이름</label>
+            <input class="form-control" asp-for="Name" />
+        </div>
+        <div class="col-md-6">
+            <label class="form-label">연락처</label>
+            <input class="form-control" asp-for="Phone" />
+        </div>
+        <div class="col-12">
+            <label class="form-label">이메일</label>
+            <input class="form-control" asp-for="Email" />
+        </div>
+        <div class="col-12">
+            <label class="form-label">비밀번호</label>
+            <input class="form-control" asp-for="Password" type="password" />
+        </div>
+        <div class="col-12">
+            <button class="btn btn-dark" type="submit">가입하기</button>
+        </div>
+    </form>
+</section>

src/TaxBaik.Web/Pages/Portal/Register.cshtml.cs

@@ -0,0 +1,75 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using TaxBaik.Application.Services;
+using TaxBaik.Web.Services;
+
+namespace TaxBaik.Web.Pages.Portal;
+
+public class RegisterModel : PageModel
+{
+    private readonly PortalUserService _portalUserService;
+    private readonly ClientService _clientService;
+
+    [BindProperty]
+    public string Name { get; set; } = "";
+
+    [BindProperty]
+    public string Phone { get; set; } = "";
+
+    [BindProperty]
+    public string Email { get; set; } = "";
+
+    [BindProperty]
+    public string Password { get; set; } = "";
+
+    [BindProperty]
+    public string? ErrorMessage { get; set; }
+
+    public RegisterModel(PortalUserService portalUserService, ClientService clientService)
+    {
+        _portalUserService = portalUserService;
+        _clientService = clientService;
+    }
+
+    public void OnGet()
+    {
+    }
+
+    public async Task<IActionResult> OnPostAsync()
+    {
+        if (string.IsNullOrWhiteSpace(Name) || string.IsNullOrWhiteSpace(Email))
+        {
+            ErrorMessage = "이름과 이메일을 입력하세요.";
+            return Page();
+        }
+
+        if (string.IsNullOrWhiteSpace(Password) || Password.Length < 8)
+        {
+            ErrorMessage = "비밀번호는 8자 이상이어야 합니다.";
+            return Page();
+        }
+
+        var existing = await _portalUserService.GetByEmailAsync(Email);
+        if (existing is not null)
+        {
+            ErrorMessage = "이미 등록된 이메일입니다.";
+            return Page();
+        }
+
+        int? clientId = null;
+        var linkedClient = await _clientService.GetByEmailAsync(Email);
+        if (linkedClient is null && !string.IsNullOrWhiteSpace(Phone))
+            linkedClient = await _clientService.GetByPhoneAsync(Phone);
+        if (linkedClient is not null)
+            clientId = linkedClient.Id;
+
+        await _portalUserService.RegisterLocalAsync(
+            Name,
+            Email,
+            Phone,
+            PortalAuthService.HashPassword(Password),
+            clientId: clientId);
+
+        return RedirectToPage("/Portal/Login");
+    }
+}