feat: add General Ledger integration and financial reporting features

- Implemented General Ledger client component for managing GL integration.
- Created a dedicated page for General Ledger configuration.
- Developed Finance Report client component for generating various financial reports.
- Added report blocks for structured display of financial data.
- Introduced API endpoints for fetching GL accounts and financial reports.
- Updated navigation to include links for GL integration and financial reports.
- Enhanced permissions to manage GL and view financial reports.
- Updated appsettings to include General Ledger API configuration.

Distribution/Features/GeneralLedger/GeneralLedgerClient.cs

@@ -0,0 +1,48 @@
+using System.Net.Http.Json;
+using System.Text.Json;
+
+namespace Distribution.Features.GeneralLedger;
+
+public record GeneralLedgerResult(int StatusCode, bool Success, JsonElement? Body);
+
+public interface IGeneralLedgerClient
+{
+    Task<bool> IsHealthyAsync(CancellationToken ct = default);
+    Task<GeneralLedgerResult> SendAsync(HttpMethod method, string path, object? payload = null, CancellationToken ct = default);
+}
+
+/// <summary>
+/// Service-to-service client for the General Ledger microservice. The GL service is not user-facing:
+/// every request carries the shared X-Api-Key (GeneralLedger:ApiKey, must equal the GL service's ApiKey:Value).
+/// <paramref name="path"/> is relative to GeneralLedger:BaseUrl and carries the API version (e.g. "v1/accounts", "v1/journal-entries"), so moving a call to v2 is a one-path change.
+/// </summary>
+public class GeneralLedgerClient(HttpClient http) : IGeneralLedgerClient
+{
+    public async Task<bool> IsHealthyAsync(CancellationToken ct = default)
+    {
+        try
+        {
+            using var response = await http.GetAsync("/health", ct);
+            return response.IsSuccessStatusCode;
+        }
+        catch (HttpRequestException)
+        {
+            return false;
+        }
+    }
+
+    public async Task<GeneralLedgerResult> SendAsync(HttpMethod method, string path, object? payload = null, CancellationToken ct = default)
+    {
+        using var request = new HttpRequestMessage(method, path.TrimStart('/'));
+        if (payload is not null) request.Content = JsonContent.Create(payload);
+
+        using var response = await http.SendAsync(request, ct);
+        JsonElement? body = null;
+        if (response.Content.Headers.ContentLength != 0)
+        {
+            try { body = await response.Content.ReadFromJsonAsync<JsonElement>(cancellationToken: ct); }
+            catch (JsonException) { }
+        }
+        return new GeneralLedgerResult((int)response.StatusCode, response.IsSuccessStatusCode, body);
+    }
+}