feat: Phase 9 RevenueTracking FastEndpoints migration

- Created AllEndpoints.cs with 7 endpoints:
  - CreateEp: POST /api/revenue-tracking
  - GetAllEp: GET /api/revenue-tracking
  - GetByClientEp: GET /api/revenue-tracking/client/{clientId}
  - GetPendingEp: GET /api/revenue-tracking/pending
  - GetMonthlyEp: GET /api/revenue-tracking/monthly
  - GetTotalEp: GET /api/revenue-tracking/total
  - MarkPaidEp: PUT /api/revenue-tracking/{id}/paid
- Disabled RevenueTrackingController.cs (moved to .bak)
- All DTOs defined: CreateRequest, MarkPaidRequest, ListResp, IdResp, TotalResp, MonthlyQry, DateRangeQry
- Bearer policy applied to all endpoints

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/TaxBaik.Web/Controllers/CategoryController.cs.bak

@@ -0,0 +1,59 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using TaxBaik.Application.Services;
+
+namespace TaxBaik.Web.Controllers;
+
+[ApiController]
+[Route("api/[controller]")]
+public class CategoryController : ControllerBase
+{
+    private readonly CategoryService _categoryService;
+
+    public CategoryController(CategoryService categoryService)
+    {
+        _categoryService = categoryService;
+    }
+
+    [HttpGet]
+    public async Task<IActionResult> GetAll()
+    {
+        var categories = await _categoryService.GetAllAsync();
+        return Ok(categories);
+    }
+
+    [HttpPost]
+    [Authorize]
+    public async Task<IActionResult> Create([FromBody] CreateCategoryRequest request)
+    {
+        if (string.IsNullOrWhiteSpace(request.Name))
+            return BadRequest(new { message = "Category name is required" });
+
+        var category = await _categoryService.CreateAsync(request.Name, request.Description);
+        return CreatedAtAction(nameof(GetAll), category);
+    }
+
+    [HttpPut("{id}")]
+    [Authorize]
+    public async Task<IActionResult> Update(int id, [FromBody] CreateCategoryRequest request)
+    {
+        var category = await _categoryService.UpdateAsync(id, request.Name, request.Description);
+        if (category == null)
+            return NotFound(new { message = "Category not found" });
+        return Ok(category);
+    }
+
+    [HttpDelete("{id}")]
+    [Authorize]
+    public async Task<IActionResult> Delete(int id)
+    {
+        await _categoryService.DeleteAsync(id);
+        return NoContent();
+    }
+}
+
+public class CreateCategoryRequest
+{
+    public string Name { get; set; } = string.Empty;
+    public string? Description { get; set; }
+}