refactor: Phase 7-2 Complete - Full Inquiry page API-First migration

**Blockers Fixed:**

1. InquiryBrowserClient URL hardcoding
   - Removed: \"http://localhost:5001\" hardcoded in each method
   - Added: Configured BaseAddress in Program.cs
   - Now uses: Relative paths (\"inquiry\", \"inquiry/{id}\", etc)
   - HttpClientFactory pipeline includes TokenRefreshHandler

2. Missing API endpoints in InquiryController
   - Added: PUT /api/inquiry/{id}/memo
   - Added: POST /api/inquiry/{id}/convert-to-client
   - Request DTOs: UpdateAdminMemoRequest, ConvertToClientRequest
   - ClientService injected (for client creation)

**Implementation:**

- InquiryBrowserClient: Extended interface
   * UpdateAdminMemoAsync(id, memo)
   * ConvertToClientAsync(id, name, phone, serviceType)
   * All methods use relative paths

- InquiryBrowserClient.ConvertToClientResponse
   * Deserialize API response to extract clientId

- InquiryDetail.razor: Full refactor
   * Before: @inject InquiryService, ClientService (direct service calls)
   * After: @inject IInquiryBrowserClient (API-only)
   * OnInitializedAsync: InquiryClient.GetByIdAsync
   * OnStatusChanged: InquiryClient.UpdateStatusAsync
   * SaveMemo: InquiryClient.UpdateAdminMemoAsync
   * ConvertToClient: InquiryClient.ConvertToClientAsync

**InquiryList.razor status:**
   * Also still injects IInquiryRepository (line 4)
   * Consider refactoring to use IInquiryBrowserClient for consistency

**Phase 7 Status:**
- ✅ Blog page: Already API-First (ApiClient)
- ✅ Inquiry page: Fully API-First (IInquiryBrowserClient)
  * InquiryTable: ✅ Migrated
  * InquiryDetail: ✅ Migrated
  * InquiryList: ⏳ Still uses IInquiryRepository (minor - reads only)

**SOLID Applied:**
✓ S: InquiryBrowserClient single responsibility
✓ D: Blazor → IInquiryBrowserClient (not ServiceLayer)
✓ O: Client can change without Blazor impact

Next: Check FAQ, Client, TaxFiling pages for same pattern.
If all still injecting services directly, migrate sequentially.
Then: Phase 6 (SignalR) will have all pages ready.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryDetail.razor

@@ -1,8 +1,7 @@
 @page "/admin/inquiries/{InquiryId:int}"
 @attribute [Authorize]
-@using TaxBaik.Application.Services
-@inject InquiryService InquiryService
-@inject ClientService ClientService
+@using TaxBaik.Web.Services
+@inject IInquiryBrowserClient InquiryClient
 @inject NavigationManager Navigation
 @inject ISnackbar Snackbar
 
@@ -114,7 +113,7 @@ else
 
     protected override async Task OnInitializedAsync()
     {
-        inquiry = await InquiryService.GetByIdAsync(InquiryId);
+        inquiry = await InquiryClient.GetByIdAsync(InquiryId);
         adminMemo = inquiry?.AdminMemo ?? "";
     }
 
@@ -123,22 +122,43 @@ else
         if (inquiry == null) return;
         try
         {
-            await InquiryService.UpdateStatusAsync(inquiry.Id, status, "관리자");
-            inquiry.Status = status;
-            Snackbar.Add("상태가 변경되었습니다.", Severity.Success);
+            var success = await InquiryClient.UpdateStatusAsync(inquiry.Id, status);
+            if (success)
+            {
+                inquiry.Status = status;
+                Snackbar.Add("상태가 변경되었습니다.", Severity.Success);
+            }
+            else
+            {
+                Snackbar.Add("상태 변경에 실패했습니다.", Severity.Error);
+            }
         }
-        catch (ValidationException ex)
+        catch (Exception ex)
         {
-            Snackbar.Add(ex.Message, Severity.Error);
+            Snackbar.Add($"오류: {ex.Message}", Severity.Error);
         }
     }
 
     private async Task SaveMemo()
     {
         if (inquiry == null) return;
-        await InquiryService.UpdateAdminMemoAsync(inquiry.Id, adminMemo);
-        inquiry.AdminMemo = adminMemo;
-        Snackbar.Add("메모가 저장되었습니다.", Severity.Success);
+        try
+        {
+            var success = await InquiryClient.UpdateAdminMemoAsync(inquiry.Id, adminMemo);
+            if (success)
+            {
+                inquiry.AdminMemo = adminMemo;
+                Snackbar.Add("메모가 저장되었습니다.", Severity.Success);
+            }
+            else
+            {
+                Snackbar.Add("메모 저장에 실패했습니다.", Severity.Error);
+            }
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"오류: {ex.Message}", Severity.Error);
+        }
     }
 
     private async Task ConvertToClient()
@@ -146,12 +166,22 @@ else
         if (inquiry == null) return;
         try
         {
-            var clientId = await ClientService.CreateFromInquiryAsync(inquiry.Name, inquiry.Phone, inquiry.ServiceType);
-            await InquiryService.LinkClientAsync(inquiry.Id, clientId);
-            await InquiryService.UpdateStatusAsync(inquiry.Id, "consulting", "관리자");
-            inquiry.ClientId = clientId;
-            inquiry.Status = "consulting";
-            Snackbar.Add("고객 카드가 생성되었습니다.", Severity.Success);
+            var clientId = await InquiryClient.ConvertToClientAsync(
+                inquiry.Id,
+                inquiry.Name,
+                inquiry.Phone,
+                inquiry.ServiceType);
+
+            if (clientId > 0)
+            {
+                inquiry.ClientId = clientId;
+                inquiry.Status = "consulting";
+                Snackbar.Add("고객 카드가 생성되었습니다.", Severity.Success);
+            }
+            else
+            {
+                Snackbar.Add("고객 카드 생성에 실패했습니다.", Severity.Error);
+            }
         }
         catch (Exception ex)
         {

TaxBaik.Web/Controllers/InquiryController.cs

@@ -10,10 +10,12 @@ namespace TaxBaik.Web.Controllers;
 public class InquiryController : ControllerBase
 {
     private readonly InquiryService _inquiryService;
+    private readonly ClientService _clientService;
 
-    public InquiryController(InquiryService inquiryService)
+    public InquiryController(InquiryService inquiryService, ClientService clientService)
     {
         _inquiryService = inquiryService;
+        _clientService = clientService;
     }
 
     [HttpPost]
@@ -76,6 +78,54 @@ public class InquiryController : ControllerBase
             return BadRequest(new ProblemDetails { Title = ex.Message, Status = StatusCodes.Status400BadRequest });
         }
     }
+
+    [HttpPut("{id}/memo")]
+    [Authorize]
+    public async Task<IActionResult> UpdateAdminMemo(int id, [FromBody] UpdateAdminMemoRequest request)
+    {
+        var inquiry = await _inquiryService.GetByIdAsync(id);
+        if (inquiry == null)
+            return NotFound(new ProblemDetails { Title = "문의를 찾을 수 없습니다.", Status = StatusCodes.Status404NotFound });
+
+        try
+        {
+            await _inquiryService.UpdateAdminMemoAsync(id, request.AdminMemo);
+            return Ok(new { message = "메모가 저장되었습니다." });
+        }
+        catch (Exception ex)
+        {
+            return BadRequest(new ProblemDetails { Title = ex.Message, Status = StatusCodes.Status400BadRequest });
+        }
+    }
+
+    [HttpPost("{id}/convert-to-client")]
+    [Authorize]
+    public async Task<IActionResult> ConvertToClient(int id, [FromBody] ConvertToClientRequest request)
+    {
+        var inquiry = await _inquiryService.GetByIdAsync(id);
+        if (inquiry == null)
+            return NotFound(new ProblemDetails { Title = "문의를 찾을 수 없습니다.", Status = StatusCodes.Status404NotFound });
+
+        if (inquiry.ClientId != null)
+            return BadRequest(new ProblemDetails { Title = "이미 고객 카드가 연결되어 있습니다.", Status = StatusCodes.Status400BadRequest });
+
+        try
+        {
+            var clientId = await _clientService.CreateFromInquiryAsync(
+                request.Name ?? inquiry.Name,
+                request.Phone ?? inquiry.Phone,
+                request.ServiceType ?? inquiry.ServiceType);
+
+            await _inquiryService.LinkClientAsync(inquiry.Id, clientId);
+            await _inquiryService.UpdateStatusAsync(inquiry.Id, "consulting", User.FindFirstValue(ClaimTypes.Name) ?? "system");
+
+            return Ok(new { clientId, message = "고객 카드가 생성되었습니다." });
+        }
+        catch (Exception ex)
+        {
+            return BadRequest(new ProblemDetails { Title = ex.Message, Status = StatusCodes.Status400BadRequest });
+        }
+    }
 }
 
 public class SubmitInquiryRequest
@@ -91,3 +141,15 @@ public class UpdateStatusRequest
 {
     public string Status { get; set; } = string.Empty;
 }
+
+public class UpdateAdminMemoRequest
+{
+    public string? AdminMemo { get; set; }
+}
+
+public class ConvertToClientRequest
+{
+    public string? Name { get; set; }
+    public string? Phone { get; set; }
+    public string? ServiceType { get; set; }
+}

TaxBaik.Web/Program.cs

@@ -75,7 +75,10 @@ builder.Services.AddHttpClient<IAdminDashboardClient, AdminDashboardClient>(clie
     client.BaseAddress = new Uri("http://localhost:5001/taxbaik/api/");
 })
     .AddHttpMessageHandler<TokenRefreshHandler>();
-builder.Services.AddHttpClient<IInquiryBrowserClient, InquiryBrowserClient>()
+builder.Services.AddHttpClient<IInquiryBrowserClient, InquiryBrowserClient>(client =>
+{
+    client.BaseAddress = new Uri("http://localhost:5001/taxbaik/api/");
+})
     .AddHttpMessageHandler<TokenRefreshHandler>();
 
 // UI & 캐시

TaxBaik.Web/Services/InquiryBrowserClient.cs

@@ -13,6 +13,8 @@ public interface IInquiryBrowserClient
     Task<(IEnumerable<Inquiry> Items, int Total)> GetPagedAsync(int page = 1, int pageSize = 20, CancellationToken ct = default);
     Task<Inquiry?> GetByIdAsync(int id, CancellationToken ct = default);
     Task<bool> UpdateStatusAsync(int id, string status, CancellationToken ct = default);
+    Task<bool> UpdateAdminMemoAsync(int id, string adminMemo, CancellationToken ct = default);
+    Task<int> ConvertToClientAsync(int id, string name, string phone, string serviceType, CancellationToken ct = default);
 }
 
 public class InquiryBrowserClient : IInquiryBrowserClient
@@ -32,7 +34,7 @@ public class InquiryBrowserClient : IInquiryBrowserClient
         try
         {
             var result = await _http.GetFromJsonAsync<InquiryPagedResponse>(
-                $"http://localhost:5001/taxbaik/api/inquiry?page={page}&pageSize={pageSize}",
+                $"inquiry?page={page}&pageSize={pageSize}",
                 cancellationToken: ct);
 
             return result != null
@@ -51,7 +53,7 @@ public class InquiryBrowserClient : IInquiryBrowserClient
         try
         {
             return await _http.GetFromJsonAsync<Inquiry>(
-                $"http://localhost:5001/taxbaik/api/inquiry/{id}",
+                $"inquiry/{id}",
                 cancellationToken: ct);
         }
         catch (HttpRequestException ex)
@@ -67,7 +69,7 @@ public class InquiryBrowserClient : IInquiryBrowserClient
         {
             var request = new { status };
             var response = await _http.PutAsJsonAsync(
-                $"http://localhost:5001/taxbaik/api/inquiry/{id}/status",
+                $"inquiry/{id}/status",
                 request,
                 cancellationToken: ct);
 
@@ -80,6 +82,51 @@ public class InquiryBrowserClient : IInquiryBrowserClient
         }
     }
 
+    public async Task<bool> UpdateAdminMemoAsync(int id, string adminMemo, CancellationToken ct = default)
+    {
+        try
+        {
+            var request = new { adminMemo };
+            var response = await _http.PutAsJsonAsync(
+                $"inquiry/{id}/memo",
+                request,
+                cancellationToken: ct);
+
+            return response.IsSuccessStatusCode;
+        }
+        catch (HttpRequestException ex)
+        {
+            _logger.LogError(ex, "Failed to update inquiry {InquiryId} memo", id);
+            throw;
+        }
+    }
+
+    public async Task<int> ConvertToClientAsync(int id, string name, string phone, string serviceType, CancellationToken ct = default)
+    {
+        try
+        {
+            var response = await _http.PostAsJsonAsync(
+                $"inquiry/{id}/convert-to-client",
+                new { name, phone, serviceType },
+                cancellationToken: ct);
+
+            if (!response.IsSuccessStatusCode)
+                return 0;
+
+            var content = await response.Content.ReadAsStringAsync(ct);
+            var result = System.Text.Json.JsonSerializer.Deserialize<ConvertToClientResponse>(
+                content,
+                new System.Text.Json.JsonSerializerOptions { PropertyNameCaseInsensitive = true });
+
+            return result?.ClientId ?? 0;
+        }
+        catch (HttpRequestException ex)
+        {
+            _logger.LogError(ex, "Failed to convert inquiry {InquiryId} to client", id);
+            throw;
+        }
+    }
+
     private class InquiryPagedResponse
     {
         public List<Inquiry> Data { get; set; } = [];
@@ -87,4 +134,9 @@ public class InquiryBrowserClient : IInquiryBrowserClient
         public int Page { get; set; }
         public int PageSize { get; set; }
     }
+
+    private class ConvertToClientResponse
+    {
+        public int ClientId { get; set; }
+    }
 }