[AZ-364] [AZ-360] Refactor C11+C08: decompose RouteProcessingService

Extracts RouteRegionMatcher, RouteCsvWriter, RouteSummaryWriter,
RouteImageRenderer, TilesZipBuilder, RegionFileCleaner from the
~750-LOC RouteProcessingService god-class. Moves TileInfo to its
own file as a sealed record. Replaces IServiceProvider scope-
locator with a direct IRegionService injection (folds AZ-360 / C08).
Updates DI registration and tests.

Tests: 133 / 133 unit + 5 / 5 smoke green; integration suite exit 0.
Pixel-equivalent stitched route image and byte-equivalent CSV /
summary / ZIP outputs verified through the smoke run.

Co-authored-by: Cursor <cursoragent@cursor.com>

SatelliteProvider.Services.RouteManagement/RegionFileCleaner.cs

@@ -0,0 +1,66 @@
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.DataAccess.Models;
+
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService.CleanupRegionFilesAsync.
+// Deletes per-region files (CSV, summary, stitched image) once a route has
+// successfully consumed them. Each delete is best-effort: a failed delete is
+// logged at warning level and does not abort the cleanup of the remaining
+// files. Stitched image path is reconstructed from regionId + ReadyDirectory
+// because regions historically did not always persist that path on the entity.
+public class RegionFileCleaner
+{
+    private readonly StorageConfig _storageConfig;
+    private readonly ILogger<RegionFileCleaner> _logger;
+
+    public RegionFileCleaner(IOptions<StorageConfig> storageConfig, ILogger<RegionFileCleaner> logger)
+    {
+        ArgumentNullException.ThrowIfNull(storageConfig);
+        _storageConfig = storageConfig.Value;
+        _logger = logger;
+    }
+
+    public Task CleanupAsync(IEnumerable<RegionEntity> regions, CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(regions);
+
+        foreach (var region in regions)
+        {
+            if (cancellationToken.IsCancellationRequested)
+                break;
+
+            if (region == null) continue;
+
+            DeleteIfPresent(region.CsvFilePath, "region CSV file");
+            DeleteIfPresent(region.SummaryFilePath, "region summary file");
+
+            var stitchedImagePath = Path.Combine(_storageConfig.ReadyDirectory, $"region_{region.Id}_stitched.jpg");
+            if (File.Exists(stitchedImagePath))
+            {
+                DeleteIfPresent(stitchedImagePath, "region stitched image");
+            }
+        }
+
+        return Task.CompletedTask;
+    }
+
+    private void DeleteIfPresent(string? path, string label)
+    {
+        if (string.IsNullOrEmpty(path) || !File.Exists(path))
+        {
+            return;
+        }
+
+        try
+        {
+            File.Delete(path);
+        }
+        catch (Exception ex)
+        {
+            _logger.LogWarning(ex, "Failed to delete {Label}: {FilePath}", label, path);
+        }
+    }
+}