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.Client/Components/Admin/Pages/Clients/ClientEdit.razor

@@ -0,0 +1,184 @@
+@page "/admin/clients/create"
+@page "/admin/clients/{Id:int}/edit"
+@rendermode @(new InteractiveWebAssemblyRenderMode(prerender: false))
+@attribute [Authorize]
+@using TaxBaik.Application.DTOs
+@using TaxBaik.Web.Services
+@using TaxBaik.Domain.Entities
+@using TaxBaik.WasmClient.Components.Admin.Shared
+@inject IClientBrowserClient ClientClient
+@inject NavigationManager Navigation
+@inject ISnackbar Snackbar
+
+<PageTitle>@(Id.HasValue ? "고객 수정" : "고객 등록")</PageTitle>
+
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">CRM</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "고객 수정" : "고객 등록")</MudText>
+    </div>
+    <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/clients"
+               StartIcon="@Icons.Material.Filled.ArrowBack">목록으로</MudButton>
+</section>
+
+<AdminEditorPanel Loading="@isLoading" SkeletonContent="@ClientEditSkeleton">
+    @if (isLoading)
+    {
+    }
+    else
+    {
+        <MudForm @ref="form" @bind-IsValid="isValid">
+            <MudGrid Spacing="3">
+                @* 기본 정보 *@
+                <MudItem xs="12">
+                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">기본 정보</MudText>
+                    <MudDivider />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <MudTextField @bind-Value="dto.Name" Label="고객명 *" Required="true"
+                                  RequiredError="고객명을 입력하세요." />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <MudTextField @bind-Value="dto.CompanyName" Label="회사명 (선택)" />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <MudTextField @bind-Value="dto.Phone" Label="연락처"
+                                  Placeholder="010-0000-0000" />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <MudTextField @bind-Value="dto.Email" Label="이메일" InputType="InputType.Email" />
+                </MudItem>
+
+                @* 세무 정보 *@
+                <MudItem xs="12" Class="mt-2">
+                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">세무 정보</MudText>
+                    <MudDivider />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <CommonCodeSelect @bind-Value="dto.ServiceType" Group="CLIENT_SERVICE_TYPE" Label="서비스 유형" Clearable="true" />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <CommonCodeSelect @bind-Value="dto.TaxType" Group="CLIENT_TAX_TYPE" Label="세금 유형" Clearable="true" />
+                </MudItem>
+
+                @* 관리 정보 *@
+                <MudItem xs="12" Class="mt-2">
+                    <MudText Typo="Typo.subtitle1" Class="fw-bold mb-1">관리 정보</MudText>
+                    <MudDivider />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <CommonCodeSelect @bind-Value="dto.Status" Group="CLIENT_STATUS" Label="상태 *" Required="true" />
+                </MudItem>
+                <MudItem xs="12" md="6">
+                    <CommonCodeSelect @bind-Value="dto.Source" Group="CLIENT_SOURCE" Label="유입 경로" Clearable="true" />
+                </MudItem>
+                <MudItem xs="12">
+                    <MudTextField @bind-Value="dto.Memo" Label="메모"
+                                  Lines="4" AutoGrow="true"
+                                  Placeholder="상담 배경, 특이사항, 중요 날짜 등 자유롭게 기록하세요" />
+                </MudItem>
+
+                @* 저장 버튼 *@
+                <MudItem xs="12" Class="d-flex gap-2 mt-2">
+                    <MudButton Variant="Variant.Filled" Color="Color.Primary"
+                               StartIcon="@Icons.Material.Filled.Save"
+                               OnClick="@SaveAsync" Disabled="@isSaving">
+                        @(isSaving ? "저장 중..." : "저장")
+                    </MudButton>
+                    <MudButton Variant="Variant.Outlined" Href="/taxbaik/admin/clients">
+                        취소
+                    </MudButton>
+                </MudItem>
+            </MudGrid>
+        </MudForm>
+    }
+</AdminEditorPanel>
+
+@code {
+    [Parameter] public int? Id { get; set; }
+
+    private MudForm form = null!;
+    private CreateClientDto dto = new() { Status = "active" };
+    private bool isValid;
+    private bool isLoading = true;
+    private bool isSaving;
+
+    private RenderFragment ClientEditSkeleton => builder =>
+    {
+        builder.OpenComponent<AdminSkeletonRows>(0);
+        builder.AddAttribute(1, "Rows", 6);
+        builder.AddAttribute(2, "Columns", 3);
+        builder.CloseComponent();
+    };
+    protected override async Task OnInitializedAsync()
+    {
+        if (Id.HasValue)
+        {
+            try
+            {
+                var client = await ClientClient.GetByIdAsync(Id.Value);
+                if (client is null)
+                {
+                    Snackbar.Add("고객을 찾을 수 없습니다.", Severity.Error);
+                    Navigation.NavigateTo("/taxbaik/admin/clients");
+                    return;
+                }
+                dto = new CreateClientDto
+                {
+                    Name = client.Name,
+                    CompanyName = client.CompanyName,
+                    Phone = client.Phone,
+                    Email = client.Email,
+                    ServiceType = client.ServiceType,
+                    TaxType = client.TaxType,
+                    Status = client.Status,
+                    Source = client.Source,
+                    Memo = client.Memo
+                };
+            }
+            catch (Exception ex)
+            {
+                Snackbar.Add($"오류: {ex.Message}", Severity.Error);
+                Navigation.NavigateTo("/taxbaik/admin/clients");
+                return;
+            }
+        }
+        isLoading = false;
+    }
+
+    private async Task SaveAsync()
+    {
+        await form.Validate();
+        if (!isValid) return;
+
+        isSaving = true;
+        try
+        {
+            if (Id.HasValue)
+            {
+                var result = await ClientClient.UpdateAsync(Id.Value, dto);
+                if (result != null)
+                    Snackbar.Add("고객 정보가 수정되었습니다.", Severity.Success);
+                else
+                    Snackbar.Add("수정에 실패했습니다.", Severity.Error);
+            }
+            else
+            {
+                var result = await ClientClient.CreateAsync(dto);
+                if (result != null)
+                    Snackbar.Add("고객이 등록되었습니다.", Severity.Success);
+                else
+                    Snackbar.Add("등록에 실패했습니다.", Severity.Error);
+            }
+            Navigation.NavigateTo("/taxbaik/admin/clients");
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
+        }
+        finally
+        {
+            isSaving = false;
+        }
+    }
+}