[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);
+        }
+    }
+}

SatelliteProvider.Services.RouteManagement/RouteCsvWriter.cs

@@ -0,0 +1,40 @@
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.Common.Utils;
+
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService.GenerateRouteCsvAsync.
+// Owns the route_<id>_ready.csv path computation and delegates the actual
+// rows-to-CSV serialization to the shared TileCsvWriter (Common). Returns
+// the produced file path so the orchestrator can persist it on the route.
+public class RouteCsvWriter
+{
+    private readonly StorageConfig _storageConfig;
+    private readonly ILogger<RouteCsvWriter> _logger;
+
+    public RouteCsvWriter(IOptions<StorageConfig> storageConfig, ILogger<RouteCsvWriter> logger)
+    {
+        ArgumentNullException.ThrowIfNull(storageConfig);
+        _storageConfig = storageConfig.Value;
+        _logger = logger;
+    }
+
+    public async Task<string> WriteAsync(
+        Guid routeId,
+        IEnumerable<TileInfo> tiles,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(tiles);
+
+        Directory.CreateDirectory(_storageConfig.ReadyDirectory);
+        var filePath = Path.Combine(_storageConfig.ReadyDirectory, $"route_{routeId}_ready.csv");
+
+        var rows = tiles.Select(t => new TileCsvRow(t.Latitude, t.Longitude, t.FilePath)).ToList();
+        await new TileCsvWriter().WriteAsync(filePath, rows, cancellationToken);
+
+        _logger.LogInformation("Route CSV generated: {FilePath} with {Count} tiles", filePath, rows.Count);
+        return filePath;
+    }
+}

SatelliteProvider.Services.RouteManagement/RouteImageRenderer.cs

@@ -0,0 +1,153 @@
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.Common.DTO;
+using SatelliteProvider.Common.Imaging;
+using SatelliteProvider.Common.Utils;
+using SatelliteProvider.DataAccess.Models;
+using SixLabors.ImageSharp;
+using SixLabors.ImageSharp.PixelFormats;
+
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService.StitchRouteTilesAsync.
+// Owns the route_<id>_stitched.jpg path computation, the per-tile filename
+// parsing into TilePlacement, the call into the shared TileGridStitcher
+// (Common), and the route-specific overlays (yellow geofence rectangles,
+// red 50-arm crosses on each route point). Behavior preserved verbatim per
+// AC-2 (pixel-for-pixel identical output for existing scenarios).
+public class RouteImageRenderer
+{
+    private const int TileSizePixels = 256;
+
+    private readonly StorageConfig _storageConfig;
+    private readonly ILogger<RouteImageRenderer> _logger;
+
+    public RouteImageRenderer(IOptions<StorageConfig> storageConfig, ILogger<RouteImageRenderer> logger)
+    {
+        ArgumentNullException.ThrowIfNull(storageConfig);
+        _storageConfig = storageConfig.Value;
+        _logger = logger;
+    }
+
+    public async Task<string?> RenderAsync(
+        Guid routeId,
+        IReadOnlyList<TileInfo> tiles,
+        int zoomLevel,
+        IReadOnlyList<(int MinX, int MinY, int MaxX, int MaxY)> geofencePolygonBounds,
+        IReadOnlyList<RoutePointEntity> routePoints,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(tiles);
+        ArgumentNullException.ThrowIfNull(geofencePolygonBounds);
+        ArgumentNullException.ThrowIfNull(routePoints);
+
+        if (tiles.Count == 0)
+        {
+            _logger.LogWarning("No tiles to stitch for route map");
+            return null;
+        }
+
+        var placements = tiles
+            .Select(t =>
+            {
+                var (tileX, tileY) = ExtractTileCoordinatesFromFilename(t.FilePath);
+                return new TilePlacement(tileX, tileY, t.FilePath);
+            })
+            .Where(p => p.TileX >= 0 && p.TileY >= 0)
+            .ToList();
+
+        if (placements.Count == 0)
+        {
+            _logger.LogWarning("No tiles with extractable coordinates to stitch for route map");
+            return null;
+        }
+
+        Directory.CreateDirectory(_storageConfig.ReadyDirectory);
+        var outputPath = Path.Combine(_storageConfig.ReadyDirectory, $"route_{routeId}_stitched.jpg");
+
+        var stitcher = new TileGridStitcher();
+        var result = await stitcher.StitchAsync(
+            placements,
+            TileSizePixels,
+            deduplicateByTileCoords: true,
+            swallowTileLoadErrors: true,
+            cancellationToken);
+
+        using var stitchedImage = result.Image;
+
+        foreach (var missing in result.MissingTiles)
+        {
+            if (missing.Reason == MissingTileReason.LoadFailed)
+            {
+                _logger.LogWarning(missing.Error, "Failed to load tile at {FilePath}, leaving black", missing.Tile.FilePath);
+            }
+            else
+            {
+                _logger.LogWarning("Tile file not found: {FilePath}, leaving black", missing.Tile.FilePath);
+            }
+        }
+
+        var minX = result.MinX;
+        var minY = result.MinY;
+        var imageWidth = result.ImageWidth;
+        var imageHeight = result.ImageHeight;
+        var yellow = new Rgb24(255, 255, 0);
+        var red = new Rgb24(255, 0, 0);
+
+        foreach (var (geoMinX, geoMinY, geoMaxX, geoMaxY) in geofencePolygonBounds)
+        {
+            var x1 = (geoMinX - minX) * TileSizePixels;
+            var y1 = (geoMinY - minY + 1) * TileSizePixels;
+            var x2 = (geoMaxX - minX + 2) * TileSizePixels - 1;
+            var y2 = (geoMaxY - minY + 1) * TileSizePixels - 1;
+
+            x1 = Math.Max(0, Math.Min(x1, imageWidth - 1));
+            y1 = Math.Max(0, Math.Min(y1, imageHeight - 1));
+            x2 = Math.Max(0, Math.Min(x2, imageWidth - 1));
+            y2 = Math.Max(0, Math.Min(y2, imageHeight - 1));
+
+            if (x1 >= 0 && y1 >= 0 && x2 < imageWidth && y2 < imageHeight && x2 > x1 && y2 > y1)
+            {
+                stitcher.DrawRectangleBorder(
+                    stitchedImage,
+                    new Rectangle(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
+                    yellow);
+            }
+        }
+
+        foreach (var point in routePoints)
+        {
+            var geoPoint = new GeoPoint(point.Latitude, point.Longitude);
+            var (tileX, tileY) = GeoUtils.WorldToTilePos(geoPoint, zoomLevel);
+
+            var pixelX = (tileX - minX) * TileSizePixels + TileSizePixels / 2;
+            var pixelY = (tileY - minY) * TileSizePixels + TileSizePixels / 2;
+
+            if (pixelX >= 0 && pixelX < imageWidth && pixelY >= 0 && pixelY < imageHeight)
+            {
+                stitcher.DrawCross(stitchedImage, new Point(pixelX, pixelY), red, 50);
+            }
+        }
+
+        await stitchedImage.SaveAsJpegAsync(outputPath, cancellationToken);
+        return outputPath;
+    }
+
+    // Parses tile_<zoom>_<x>_<y>_<timestamp>.jpg via StorageConfig.TryExtractTileCoordinates.
+    // On parse failure, logs a warning and returns the (-1, -1) sentinel — the
+    // RenderAsync pipeline filters those out before stitching. ArgumentNullException
+    // on null input is propagated from StorageConfig.
+    internal (int TileX, int TileY) ExtractTileCoordinatesFromFilename(string filePath)
+    {
+        if (StorageConfig.TryExtractTileCoordinates(filePath, out var tileX, out var tileY))
+        {
+            return (tileX, tileY);
+        }
+
+        _logger.LogWarning(
+            "Could not extract tile coordinates from filename {FilePath}; expected pattern tile_<zoom>_<x>_<y>_<timestamp>",
+            filePath);
+        return (-1, -1);
+    }
+}

SatelliteProvider.Services.RouteManagement/RouteManagementServiceCollectionExtensions.cs

@@ -8,6 +8,11 @@ public static class RouteManagementServiceCollectionExtensions
 {
     public static IServiceCollection AddRouteManagement(this IServiceCollection services)
     {
+        services.AddSingleton<RouteCsvWriter>();
+        services.AddSingleton<RouteSummaryWriter>();
+        services.AddSingleton<RouteImageRenderer>();
+        services.AddSingleton<TilesZipBuilder>();
+        services.AddSingleton<RegionFileCleaner>();
         services.AddSingleton<IRouteService, RouteService>();
         services.AddHostedService<RouteProcessingService>();
         return services;

SatelliteProvider.Services.RouteManagement/RouteProcessingService.cs

@@ -1,37 +1,53 @@
-using System.IO.Compression;
-using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Hosting;
 using Microsoft.Extensions.Logging;
-using Microsoft.Extensions.Options;
-using SatelliteProvider.Common.Configs;
-using SatelliteProvider.Common.Imaging;
+using SatelliteProvider.Common.DTO;
+using SatelliteProvider.Common.Interfaces;
 using SatelliteProvider.Common.Utils;
+using SatelliteProvider.DataAccess.Models;
 using SatelliteProvider.DataAccess.Repositories;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.PixelFormats;
 
 namespace SatelliteProvider.Services.RouteManagement;
 
+// AZ-364 / C11: thin orchestrator after the god-class decomposition.
+// Polls the route repository, classifies region statuses, queues region work
+// via IRegionService (AZ-360 / C08 — direct dependency, no IServiceProvider),
+// and dispatches output generation to the per-concern collaborators
+// (RouteCsvWriter, RouteSummaryWriter, RouteImageRenderer, TilesZipBuilder,
+// RegionFileCleaner, RouteRegionMatcher).
 public class RouteProcessingService : BackgroundService
 {
     private readonly IRouteRepository _routeRepository;
     private readonly IRegionRepository _regionRepository;
-    private readonly IServiceProvider _serviceProvider;
-    private readonly StorageConfig _storageConfig;
+    private readonly IRegionService _regionService;
+    private readonly RouteCsvWriter _routeCsvWriter;
+    private readonly RouteSummaryWriter _routeSummaryWriter;
+    private readonly RouteImageRenderer _routeImageRenderer;
+    private readonly TilesZipBuilder _tilesZipBuilder;
+    private readonly RegionFileCleaner _regionFileCleaner;
+    private readonly RouteRegionMatcher _routeRegionMatcher;
     private readonly ILogger<RouteProcessingService> _logger;
     private readonly TimeSpan _checkInterval = TimeSpan.FromSeconds(5);
 
     public RouteProcessingService(
         IRouteRepository routeRepository,
         IRegionRepository regionRepository,
-        IServiceProvider serviceProvider,
-        IOptions<StorageConfig> storageConfig,
+        IRegionService regionService,
+        RouteCsvWriter routeCsvWriter,
+        RouteSummaryWriter routeSummaryWriter,
+        RouteImageRenderer routeImageRenderer,
+        TilesZipBuilder tilesZipBuilder,
+        RegionFileCleaner regionFileCleaner,
         ILogger<RouteProcessingService> logger)
     {
         _routeRepository = routeRepository;
         _regionRepository = regionRepository;
-        _serviceProvider = serviceProvider;
-        _storageConfig = storageConfig.Value;
+        _regionService = regionService;
+        _routeCsvWriter = routeCsvWriter;
+        _routeSummaryWriter = routeSummaryWriter;
+        _routeImageRenderer = routeImageRenderer;
+        _tilesZipBuilder = tilesZipBuilder;
+        _regionFileCleaner = regionFileCleaner;
+        _routeRegionMatcher = new RouteRegionMatcher();
         _logger = logger;
     }
 
@@ -58,7 +74,7 @@ public class RouteProcessingService : BackgroundService
 
     private async Task ProcessPendingRoutesAsync(CancellationToken cancellationToken)
     {
-        var pendingRoutes = await GetRoutesWithPendingMapsAsync();
+        var pendingRoutes = await _routeRepository.GetRoutesWithPendingMapsAsync();
 
         foreach (var route in pendingRoutes)
         {
@@ -76,12 +92,6 @@ public class RouteProcessingService : BackgroundService
         }
     }
 
-    private async Task<List<(Guid Id, bool RequestMaps)>> GetRoutesWithPendingMapsAsync()
-    {
-        var routes = await _routeRepository.GetRoutesWithPendingMapsAsync();
-        return routes.Select(r => (r.Id, r.RequestMaps)).ToList();
-    }
-
     private async Task ProcessRouteSequentiallyAsync(Guid routeId, CancellationToken cancellationToken)
     {
         var route = await _routeRepository.GetByIdAsync(routeId);
@@ -90,7 +100,7 @@ public class RouteProcessingService : BackgroundService
             _logger.LogWarning("Route {RouteId}: Route not found, skipping processing", routeId);
             return;
         }
-        
+
         if (!route.RequestMaps || route.MapsReady)
         {
             return;
@@ -99,33 +109,30 @@ public class RouteProcessingService : BackgroundService
         var routePointsList = (await _routeRepository.GetRoutePointsAsync(routeId)).ToList();
         var regionIdsList = (await _routeRepository.GetRegionIdsByRouteAsync(routeId)).ToList();
         var geofenceRegionIdsList = (await _routeRepository.GetGeofenceRegionIdsByRouteAsync(routeId)).ToList();
-        
+
         var allRegionIds = regionIdsList.Union(geofenceRegionIdsList).ToList();
-        
+
         if (regionIdsList.Count == 0 && routePointsList.Count > 0)
         {
-            using var scope = _serviceProvider.CreateScope();
-            var regionService = scope.ServiceProvider.GetRequiredService<Common.Interfaces.IRegionService>();
-            
             foreach (var point in routePointsList)
             {
                 var regionId = Guid.NewGuid();
-                
-                await regionService.RequestRegionAsync(
+
+                await _regionService.RequestRegionAsync(
                     regionId,
                     point.Latitude,
                     point.Longitude,
                     route.RegionSizeMeters,
                     route.ZoomLevel,
                     stitchTiles: false);
-                
+
                 await _routeRepository.LinkRouteToRegionAsync(routeId, regionId);
             }
-            
+
             return;
         }
-        
-        var regions = new List<DataAccess.Models.RegionEntity>();
+
+        var regions = new List<RegionEntity>();
         foreach (var regionId in allRegionIds)
         {
             var region = await _regionRepository.GetByIdAsync(regionId);
@@ -134,106 +141,99 @@ public class RouteProcessingService : BackgroundService
                 regions.Add(region);
             }
         }
-        
+
         var completedRegions = regions.Where(r => r.Status == "completed").ToList();
         var failedRegions = regions.Where(r => r.Status == "failed").ToList();
         var processingRegions = regions.Where(r => r.Status == "queued" || r.Status == "processing").ToList();
-        
+
         var completedRoutePointRegions = completedRegions.Where(r => !geofenceRegionIdsList.Contains(r.Id)).ToList();
         var completedGeofenceRegions = completedRegions.Where(r => geofenceRegionIdsList.Contains(r.Id)).ToList();
-        
+
         var hasRoutePointRegions = regionIdsList.Count > 0;
         var hasEnoughRoutePointRegions = !hasRoutePointRegions || completedRoutePointRegions.Count >= routePointsList.Count;
         var hasAllGeofenceRegions = geofenceRegionIdsList.Count == 0 || completedGeofenceRegions.Count >= geofenceRegionIdsList.Count;
         var hasEnoughCompleted = hasEnoughRoutePointRegions && hasAllGeofenceRegions;
-        
+
         var activeRegions = completedRegions.Count + processingRegions.Count;
         var shouldRetryFailed = failedRegions.Count > 0 && !hasEnoughCompleted && activeRegions < allRegionIds.Count;
-        
+
         if (hasEnoughCompleted)
         {
-            var orderedRouteRegions = MatchRegionsToRoutePoints(routePointsList, completedRoutePointRegions, routeId);
-            var routeRegionIds = orderedRouteRegions.Select(r => r.Id).ToList();
-            var allRegionIdsForStitching = routeRegionIds.Concat(completedGeofenceRegions.Select(r => r.Id)).Distinct();
-            var geofenceRegionIdsForBorders = completedGeofenceRegions.Select(r => r.Id).ToList();
-            
-            await GenerateRouteMapsAsync(routeId, route, allRegionIdsForStitching, geofenceRegionIdsForBorders, routePointsList, cancellationToken);
+            var orderedRouteRegions = _routeRegionMatcher.Match(routePointsList, completedRoutePointRegions);
+            var regionsForOutput = orderedRouteRegions.Concat(completedGeofenceRegions)
+                .GroupBy(r => r.Id)
+                .Select(g => g.First())
+                .ToList();
+
+            await GenerateRouteMapsAsync(routeId, route, regionsForOutput, completedGeofenceRegions, routePointsList, cancellationToken);
             return;
         }
-        
+
         if (shouldRetryFailed)
         {
-            using var scope = _serviceProvider.CreateScope();
-            var regionService = scope.ServiceProvider.GetRequiredService<Common.Interfaces.IRegionService>();
-            
             foreach (var failedRegion in failedRegions)
             {
                 var newRegionId = Guid.NewGuid();
-                
-                await regionService.RequestRegionAsync(
+
+                await _regionService.RequestRegionAsync(
                     newRegionId,
                     failedRegion.Latitude,
                     failedRegion.Longitude,
                     failedRegion.SizeMeters,
                     failedRegion.ZoomLevel,
                     stitchTiles: false);
-                
+
                 await _routeRepository.LinkRouteToRegionAsync(routeId, newRegionId);
             }
-            
+
             return;
         }
-        
+
         var anyProcessing = processingRegions.Count > 0;
         if (anyProcessing)
         {
             return;
         }
-        
-        _logger.LogWarning("Route {RouteId}: No processing regions, but not enough completed. This is an unexpected state - hasEnoughCompleted={HasEnough}, shouldRetryFailed={ShouldRetry}, anyProcessing={AnyProcessing}", 
+
+        _logger.LogWarning(
+            "Route {RouteId}: No processing regions, but not enough completed. This is an unexpected state - hasEnoughCompleted={HasEnough}, shouldRetryFailed={ShouldRetry}, anyProcessing={AnyProcessing}",
             routeId, hasEnoughCompleted, shouldRetryFailed, anyProcessing);
     }
 
     private async Task GenerateRouteMapsAsync(
         Guid routeId,
-        DataAccess.Models.RouteEntity route,
-        IEnumerable<Guid> regionIds,
-        List<Guid> geofenceRegionIds,
-        List<DataAccess.Models.RoutePointEntity> routePoints,
+        RouteEntity route,
+        IReadOnlyList<RegionEntity> regionsForOutput,
+        IReadOnlyList<RegionEntity> geofenceRegions,
+        IReadOnlyList<RoutePointEntity> routePoints,
         CancellationToken cancellationToken)
     {
         try
         {
-            var readyDir = _storageConfig.ReadyDirectory;
-            Directory.CreateDirectory(readyDir);
-
             var allTiles = new Dictionary<string, TileInfo>();
             int totalTilesFromRegions = 0;
             int duplicateTiles = 0;
 
-            foreach (var regionId in regionIds)
+            foreach (var region in regionsForOutput)
             {
-                var region = await _regionRepository.GetByIdAsync(regionId);
-                if (region == null || string.IsNullOrEmpty(region.CsvFilePath) || !File.Exists(region.CsvFilePath))
+                if (string.IsNullOrEmpty(region.CsvFilePath) || !File.Exists(region.CsvFilePath))
                 {
-                    _logger.LogWarning("Route {RouteId}: Region {RegionId} CSV not found", routeId, regionId);
+                    _logger.LogWarning("Route {RouteId}: Region {RegionId} CSV not found", routeId, region.Id);
                     continue;
                 }
 
                 var csvLines = await File.ReadAllLinesAsync(region.CsvFilePath, cancellationToken);
 
-                var lineNumber = 0;
                 foreach (var line in csvLines.Skip(1))
                 {
-                    lineNumber++;
                     var parts = line.Split(',');
                     if (parts.Length < 3) continue;
 
-                    if (!double.TryParse(parts[0], out var lat)) 
+                    if (!double.TryParse(parts[0], out var lat))
                     {
                         continue;
                     }
-                    if (!double.TryParse(parts[1], out var lon)) 
+                    if (!double.TryParse(parts[1], out var lon))
                     {
                         continue;
                     }
@@ -244,12 +244,7 @@ public class RouteProcessingService : BackgroundService
 
                     if (!allTiles.ContainsKey(key))
                     {
-                        allTiles[key] = new TileInfo
-                        {
-                            Latitude = lat,
-                            Longitude = lon,
-                            FilePath = filePath
-                        };
+                        allTiles[key] = new TileInfo(lat, lon, filePath);
                     }
                     else
                     {
@@ -258,65 +253,36 @@ public class RouteProcessingService : BackgroundService
                 }
             }
 
-            var csvPath = Path.Combine(readyDir, $"route_{routeId}_ready.csv");
-            await GenerateRouteCsvAsync(csvPath, allTiles.Values, cancellationToken);
+            var tileList = allTiles.Values.ToList();
+
+            var csvPath = await _routeCsvWriter.WriteAsync(routeId, tileList, cancellationToken);
 
             string? stitchedImagePath = null;
             if (route.RequestMaps)
             {
-                var geofencePolygonBounds = new List<(int MinX, int MinY, int MaxX, int MaxY)>();
-                
-                var geofencesByPolygon = await _routeRepository.GetGeofenceRegionsByPolygonAsync(routeId);
-                
-                foreach (var (polygonIndex, polygonRegionIds) in geofencesByPolygon.OrderBy(kvp => kvp.Key))
-                {
-                    int? minX = null, minY = null, maxX = null, maxY = null;
-                    
-                    foreach (var geofenceId in polygonRegionIds)
-                    {
-                        var region = await _regionRepository.GetByIdAsync(geofenceId);
-                        if (region != null && !string.IsNullOrEmpty(region.CsvFilePath) && File.Exists(region.CsvFilePath))
-                        {
-                            var csvLines = await File.ReadAllLinesAsync(region.CsvFilePath, cancellationToken);
-                            
-                            foreach (var line in csvLines.Skip(1))
-                            {
-                                var parts = line.Split(',');
-                                if (parts.Length >= 3)
-                                {
-                                    if (double.TryParse(parts[0], out var lat) && double.TryParse(parts[1], out var lon))
-                                    {
-                                        var tile = GeoUtils.WorldToTilePos(new Common.DTO.GeoPoint { Lat = lat, Lon = lon }, route.ZoomLevel);
-                                        minX = minX == null ? tile.x : Math.Min(minX.Value, tile.x);
-                                        minY = minY == null ? tile.y : Math.Min(minY.Value, tile.y);
-                                        maxX = maxX == null ? tile.x : Math.Max(maxX.Value, tile.x);
-                                        maxY = maxY == null ? tile.y : Math.Max(maxY.Value, tile.y);
-                                    }
-                                }
-                            }
-                        }
-                    }
-                    
-                    if (minX.HasValue && minY.HasValue && maxX.HasValue && maxY.HasValue)
-                    {
-                        geofencePolygonBounds.Add((minX.Value, minY.Value, maxX.Value, maxY.Value));
-                    }
-                }
-                
-                stitchedImagePath = Path.Combine(readyDir, $"route_{routeId}_stitched.jpg");
-                    
-                await StitchRouteTilesAsync(allTiles.Values.ToList(), stitchedImagePath, route.ZoomLevel, geofencePolygonBounds, routePoints, cancellationToken);
+                var geofencePolygonBounds = await ComputeGeofencePolygonBoundsAsync(routeId, route.ZoomLevel, cancellationToken);
+                stitchedImagePath = await _routeImageRenderer.RenderAsync(
+                    routeId,
+                    tileList,
+                    route.ZoomLevel,
+                    geofencePolygonBounds,
+                    routePoints,
+                    cancellationToken);
             }
 
             string? tilesZipPath = null;
             if (route.CreateTilesZip)
             {
-                tilesZipPath = Path.Combine(readyDir, $"route_{routeId}_tiles.zip");
-                await CreateTilesZipAsync(tilesZipPath, allTiles.Values, cancellationToken);
+                tilesZipPath = await _tilesZipBuilder.BuildAsync(routeId, tileList, cancellationToken);
             }
 
-            var summaryPath = Path.Combine(readyDir, $"route_{routeId}_summary.txt");
-            await GenerateRouteSummaryAsync(summaryPath, route, allTiles.Count, totalTilesFromRegions, duplicateTiles, tilesZipPath, cancellationToken);
+            var summaryPath = await _routeSummaryWriter.WriteAsync(
+                route,
+                tileList.Count,
+                totalTilesFromRegions,
+                duplicateTiles,
+                tilesZipPath,
+                cancellationToken);
 
             route.MapsReady = true;
             route.CsvFilePath = csvPath;
@@ -327,7 +293,7 @@ public class RouteProcessingService : BackgroundService
 
             await _routeRepository.UpdateRouteAsync(route);
 
-            await CleanupRegionFilesAsync(regionIds, cancellationToken);
+            await _regionFileCleaner.CleanupAsync(regionsForOutput, cancellationToken);
 
             _logger.LogInformation("Route {RouteId} maps processing completed successfully", routeId);
         }
@@ -338,313 +304,51 @@ public class RouteProcessingService : BackgroundService
         }
     }
 
-    private async Task CleanupRegionFilesAsync(IEnumerable<Guid> regionIds, CancellationToken cancellationToken)
-    {
-        foreach (var regionId in regionIds)
-        {
-            var region = await _regionRepository.GetByIdAsync(regionId);
-            if (region == null) continue;
-
-            if (!string.IsNullOrEmpty(region.CsvFilePath) && File.Exists(region.CsvFilePath))
-            {
-                try
-                {
-                    File.Delete(region.CsvFilePath);
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogWarning(ex, "Failed to delete region CSV file: {FilePath}", region.CsvFilePath);
-                }
-            }
-
-            if (!string.IsNullOrEmpty(region.SummaryFilePath) && File.Exists(region.SummaryFilePath))
-            {
-                try
-                {
-                    File.Delete(region.SummaryFilePath);
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogWarning(ex, "Failed to delete region summary file: {FilePath}", region.SummaryFilePath);
-                }
-            }
-
-            var readyDir = _storageConfig.ReadyDirectory;
-            var stitchedImagePath = Path.Combine(readyDir, $"region_{regionId}_stitched.jpg");
-            if (File.Exists(stitchedImagePath))
-            {
-                try
-                {
-                    File.Delete(stitchedImagePath);
-                }
-                catch (Exception ex)
-                {
-                    _logger.LogWarning(ex, "Failed to delete region stitched image: {FilePath}", stitchedImagePath);
-                }
-            }
-        }
-    }
-
-    private async Task GenerateRouteCsvAsync(
-        string filePath,
-        IEnumerable<TileInfo> tiles,
-        CancellationToken cancellationToken)
-    {
-        var rows = tiles.Select(t => new TileCsvRow(t.Latitude, t.Longitude, t.FilePath)).ToList();
-        await new TileCsvWriter().WriteAsync(filePath, rows, cancellationToken);
-        _logger.LogInformation("Route CSV generated: {FilePath} with {Count} tiles", filePath, rows.Count);
-    }
-
-    private async Task GenerateRouteSummaryAsync(
-        string filePath,
-        DataAccess.Models.RouteEntity route,
-        int uniqueTiles,
-        int totalTilesFromRegions,
-        int duplicateTiles,
-        string? tilesZipPath,
-        CancellationToken cancellationToken)
-    {
-        var summary = new System.Text.StringBuilder();
-        summary.AppendLine("Route Maps Summary");
-        summary.AppendLine("==================");
-        summary.AppendLine($"Route ID: {route.Id}");
-        summary.AppendLine($"Route Name: {route.Name}");
-        if (!string.IsNullOrEmpty(route.Description))
-        {
-            summary.AppendLine($"Description: {route.Description}");
-        }
-        summary.AppendLine($"Total Points: {route.TotalPoints}");
-        summary.AppendLine($"Total Distance: {route.TotalDistanceMeters:F2} meters");
-        summary.AppendLine($"Region Size: {route.RegionSizeMeters:F0} meters");
-        summary.AppendLine($"Zoom Level: {route.ZoomLevel}");
-        summary.AppendLine();
-        summary.AppendLine("Tile Statistics:");
-        summary.AppendLine($"- Unique Tiles: {uniqueTiles}");
-        summary.AppendLine($"- Total Tiles from Regions: {totalTilesFromRegions}");
-        summary.AppendLine($"- Duplicate Tiles (overlap): {duplicateTiles}");
-        summary.AppendLine();
-        summary.AppendLine("Files Created:");
-        summary.AppendLine($"- CSV: route_{route.Id}_ready.csv");
-        summary.AppendLine($"- Summary: route_{route.Id}_summary.txt");
-        if (route.RequestMaps)
-        {
-            summary.AppendLine($"- Stitched Map: route_{route.Id}_stitched.jpg");
-        }
-        if (tilesZipPath != null)
-        {
-            summary.AppendLine($"- Tiles ZIP: route_{route.Id}_tiles.zip");
-        }
-        summary.AppendLine();
-        summary.AppendLine($"Completed: {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC");
-
-        await File.WriteAllTextAsync(filePath, summary.ToString(), cancellationToken);
-
-        _logger.LogInformation("Route summary generated: {FilePath}", filePath);
-    }
-
-    private async Task StitchRouteTilesAsync(
-        List<TileInfo> tiles,
-        string outputPath,
+    private async Task<List<(int MinX, int MinY, int MaxX, int MaxY)>> ComputeGeofencePolygonBoundsAsync(
+        Guid routeId,
         int zoomLevel,
-        List<(int MinX, int MinY, int MaxX, int MaxY)> geofencePolygonBounds,
-        List<DataAccess.Models.RoutePointEntity> routePoints,
         CancellationToken cancellationToken)
     {
-        if (tiles.Count == 0)
+        var bounds = new List<(int MinX, int MinY, int MaxX, int MaxY)>();
+        var geofencesByPolygon = await _routeRepository.GetGeofenceRegionsByPolygonAsync(routeId);
+
+        foreach (var (_, polygonRegionIds) in geofencesByPolygon.OrderBy(kvp => kvp.Key))
         {
-            _logger.LogWarning("No tiles to stitch for route map");
-            return;
-        }
+            int? minX = null, minY = null, maxX = null, maxY = null;
 
-        const int tileSizePixels = 256;
-
-        var placements = tiles
-            .Select(t =>
+            foreach (var geofenceId in polygonRegionIds)
             {
-                var (tileX, tileY) = ExtractTileCoordinatesFromFilename(t.FilePath);
-                return new TilePlacement(tileX, tileY, t.FilePath);
-            })
-            .Where(p => p.TileX >= 0 && p.TileY >= 0)
-            .ToList();
-
-        if (placements.Count == 0)
-        {
-            _logger.LogWarning("No tiles with extractable coordinates to stitch for route map");
-            return;
-        }
-
-        var stitcher = new TileGridStitcher();
-        var result = await stitcher.StitchAsync(
-            placements,
-            tileSizePixels,
-            deduplicateByTileCoords: true,
-            swallowTileLoadErrors: true,
-            cancellationToken);
-
-        using var stitchedImage = result.Image;
-
-        foreach (var missing in result.MissingTiles)
-        {
-            if (missing.Reason == MissingTileReason.LoadFailed)
-            {
-                _logger.LogWarning(missing.Error, "Failed to load tile at {FilePath}, leaving black", missing.Tile.FilePath);
-            }
-            else
-            {
-                _logger.LogWarning("Tile file not found: {FilePath}, leaving black", missing.Tile.FilePath);
-            }
-        }
-
-        var minX = result.MinX;
-        var minY = result.MinY;
-        var imageWidth = result.ImageWidth;
-        var imageHeight = result.ImageHeight;
-        var yellow = new Rgb24(255, 255, 0);
-        var red = new Rgb24(255, 0, 0);
-
-        foreach (var (geoMinX, geoMinY, geoMaxX, geoMaxY) in geofencePolygonBounds)
-        {
-            var x1 = (geoMinX - minX) * tileSizePixels;
-            var y1 = (geoMinY - minY + 1) * tileSizePixels;
-            var x2 = (geoMaxX - minX + 2) * tileSizePixels - 1;
-            var y2 = (geoMaxY - minY + 1) * tileSizePixels - 1;
-
-            x1 = Math.Max(0, Math.Min(x1, imageWidth - 1));
-            y1 = Math.Max(0, Math.Min(y1, imageHeight - 1));
-            x2 = Math.Max(0, Math.Min(x2, imageWidth - 1));
-            y2 = Math.Max(0, Math.Min(y2, imageHeight - 1));
-
-            if (x1 >= 0 && y1 >= 0 && x2 < imageWidth && y2 < imageHeight && x2 > x1 && y2 > y1)
-            {
-                stitcher.DrawRectangleBorder(
-                    stitchedImage,
-                    new Rectangle(x1, y1, x2 - x1 + 1, y2 - y1 + 1),
-                    yellow);
-            }
-        }
-
-        foreach (var point in routePoints)
-        {
-            var geoPoint = new Common.DTO.GeoPoint { Lat = point.Latitude, Lon = point.Longitude };
-            var (tileX, tileY) = GeoUtils.WorldToTilePos(geoPoint, zoomLevel);
-
-            var pixelX = (tileX - minX) * tileSizePixels + tileSizePixels / 2;
-            var pixelY = (tileY - minY) * tileSizePixels + tileSizePixels / 2;
-
-            if (pixelX >= 0 && pixelX < imageWidth && pixelY >= 0 && pixelY < imageHeight)
-            {
-                stitcher.DrawCross(stitchedImage, new Point(pixelX, pixelY), red, 50);
-            }
-        }
-
-        await stitchedImage.SaveAsJpegAsync(outputPath, cancellationToken);
-    }
-
-    private List<DataAccess.Models.RegionEntity> MatchRegionsToRoutePoints(
-        List<DataAccess.Models.RoutePointEntity> routePoints,
-        List<DataAccess.Models.RegionEntity> regions,
-        Guid routeId)
-    {
-        var orderedRegions = new List<DataAccess.Models.RegionEntity>();
-        var availableRegions = new List<DataAccess.Models.RegionEntity>(regions);
-        
-        foreach (var point in routePoints)
-        {
-            var pointGeo = new Common.DTO.GeoPoint { Lat = point.Latitude, Lon = point.Longitude };
-            var matchedRegion = availableRegions
-                .OrderBy(r => GeoUtils.CalculateDistance(pointGeo, new Common.DTO.GeoPoint { Lat = r.Latitude, Lon = r.Longitude }))
-                .FirstOrDefault();
-
-            if (matchedRegion != null)
-            {
-                orderedRegions.Add(matchedRegion);
-                availableRegions.Remove(matchedRegion);
-            }
-        }
-
-        return orderedRegions;
-    }
-
-    internal (int TileX, int TileY) ExtractTileCoordinatesFromFilename(string filePath)
-    {
-        if (StorageConfig.TryExtractTileCoordinates(filePath, out var tileX, out var tileY))
-        {
-            return (tileX, tileY);
-        }
-
-        _logger.LogWarning(
-            "Could not extract tile coordinates from filename {FilePath}; expected pattern tile_<zoom>_<x>_<y>_<timestamp>",
-            filePath);
-        return (-1, -1);
-    }
-
-    private Task CreateTilesZipAsync(
-        string zipFilePath,
-        IEnumerable<TileInfo> tiles,
-        CancellationToken cancellationToken)
-    {
-        return Task.Run(() =>
-        {
-            if (File.Exists(zipFilePath))
-            {
-                File.Delete(zipFilePath);
-            }
-
-            using var zipArchive = ZipFile.Open(zipFilePath, ZipArchiveMode.Create);
-            int addedFiles = 0;
-            int missingFiles = 0;
-
-            var tilesBasePath = _storageConfig.TilesDirectory;
-            var normalizedBasePath = Path.GetFullPath(tilesBasePath).TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
-
-            foreach (var tile in tiles)
-            {
-                if (cancellationToken.IsCancellationRequested)
-                    break;
-
-                if (File.Exists(tile.FilePath))
+                var region = await _regionRepository.GetByIdAsync(geofenceId);
+                if (region == null || string.IsNullOrEmpty(region.CsvFilePath) || !File.Exists(region.CsvFilePath))
                 {
-                    try
-                    {
-                        var fullPath = Path.GetFullPath(tile.FilePath);
-                        string entryName;
-
-                        if (fullPath.StartsWith(normalizedBasePath, StringComparison.OrdinalIgnoreCase))
-                        {
-                            var relativePath = fullPath.Substring(normalizedBasePath.Length + 1);
-                            relativePath = relativePath.Replace(Path.DirectorySeparatorChar, '/');
-                            entryName = "tiles/" + relativePath;
-                        }
-                        else
-                        {
-                            entryName = "tiles/" + Path.GetFileName(tile.FilePath);
-                        }
-
-                        zipArchive.CreateEntryFromFile(tile.FilePath, entryName, CompressionLevel.Optimal);
-                        addedFiles++;
-                    }
-                    catch (Exception ex)
-                    {
-                        _logger.LogWarning(ex, "Failed to add tile to zip: {FilePath}", tile.FilePath);
-                    }
+                    continue;
                 }
-                else
+
+                var csvLines = await File.ReadAllLinesAsync(region.CsvFilePath, cancellationToken);
+
+                foreach (var line in csvLines.Skip(1))
                 {
-                    _logger.LogWarning("Tile file not found for zip: {FilePath}", tile.FilePath);
-                    missingFiles++;
+                    var parts = line.Split(',');
+                    if (parts.Length < 3) continue;
+                    if (!double.TryParse(parts[0], out var lat) || !double.TryParse(parts[1], out var lon))
+                    {
+                        continue;
+                    }
+
+                    var tile = GeoUtils.WorldToTilePos(new GeoPoint(lat, lon), zoomLevel);
+                    minX = minX == null ? tile.x : Math.Min(minX.Value, tile.x);
+                    minY = minY == null ? tile.y : Math.Min(minY.Value, tile.y);
+                    maxX = maxX == null ? tile.x : Math.Max(maxX.Value, tile.x);
+                    maxY = maxY == null ? tile.y : Math.Max(maxY.Value, tile.y);
                 }
             }
 
-            _logger.LogInformation("Tiles zip created: {ZipPath} with {AddedFiles} tiles ({MissingFiles} missing)", 
-                zipFilePath, addedFiles, missingFiles);
-        }, cancellationToken);
+            if (minX.HasValue && minY.HasValue && maxX.HasValue && maxY.HasValue)
+            {
+                bounds.Add((minX.Value, minY.Value, maxX.Value, maxY.Value));
+            }
+        }
+
+        return bounds;
     }
 }
-
-public class TileInfo
-{
-    public double Latitude { get; set; }
-    public double Longitude { get; set; }
-    public string FilePath { get; set; } = string.Empty;
-}
-

SatelliteProvider.Services.RouteManagement/RouteRegionMatcher.cs

@@ -0,0 +1,39 @@
+using SatelliteProvider.Common.DTO;
+using SatelliteProvider.Common.Utils;
+using SatelliteProvider.DataAccess.Models;
+
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService.MatchRegionsToRoutePoints.
+// Pure: given a list of route points and the regions known to be completed,
+// return the regions ordered to match the route point sequence using nearest-
+// neighbour Haversine distance. Each region is consumed at most once.
+public class RouteRegionMatcher
+{
+    public List<RegionEntity> Match(
+        IReadOnlyList<RoutePointEntity> routePoints,
+        IReadOnlyList<RegionEntity> regions)
+    {
+        ArgumentNullException.ThrowIfNull(routePoints);
+        ArgumentNullException.ThrowIfNull(regions);
+
+        var orderedRegions = new List<RegionEntity>(routePoints.Count);
+        var availableRegions = new List<RegionEntity>(regions);
+
+        foreach (var point in routePoints)
+        {
+            var pointGeo = new GeoPoint(point.Latitude, point.Longitude);
+            var matchedRegion = availableRegions
+                .OrderBy(r => GeoUtils.CalculateDistance(pointGeo, new GeoPoint(r.Latitude, r.Longitude)))
+                .FirstOrDefault();
+
+            if (matchedRegion != null)
+            {
+                orderedRegions.Add(matchedRegion);
+                availableRegions.Remove(matchedRegion);
+            }
+        }
+
+        return orderedRegions;
+    }
+}

SatelliteProvider.Services.RouteManagement/RouteSummaryWriter.cs

@@ -0,0 +1,76 @@
+using System.Text;
+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.GenerateRouteSummaryAsync.
+// Owns the route_<id>_summary.txt path and the StringBuilder block that
+// describes the route, tile statistics, and produced files. Output content
+// preserved verbatim to satisfy AC-2 (byte-identical for existing scenarios).
+public class RouteSummaryWriter
+{
+    private readonly StorageConfig _storageConfig;
+    private readonly ILogger<RouteSummaryWriter> _logger;
+
+    public RouteSummaryWriter(IOptions<StorageConfig> storageConfig, ILogger<RouteSummaryWriter> logger)
+    {
+        ArgumentNullException.ThrowIfNull(storageConfig);
+        _storageConfig = storageConfig.Value;
+        _logger = logger;
+    }
+
+    public async Task<string> WriteAsync(
+        RouteEntity route,
+        int uniqueTiles,
+        int totalTilesFromRegions,
+        int duplicateTiles,
+        string? tilesZipPath,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(route);
+
+        Directory.CreateDirectory(_storageConfig.ReadyDirectory);
+        var filePath = Path.Combine(_storageConfig.ReadyDirectory, $"route_{route.Id}_summary.txt");
+
+        var summary = new StringBuilder();
+        summary.AppendLine("Route Maps Summary");
+        summary.AppendLine("==================");
+        summary.AppendLine($"Route ID: {route.Id}");
+        summary.AppendLine($"Route Name: {route.Name}");
+        if (!string.IsNullOrEmpty(route.Description))
+        {
+            summary.AppendLine($"Description: {route.Description}");
+        }
+        summary.AppendLine($"Total Points: {route.TotalPoints}");
+        summary.AppendLine($"Total Distance: {route.TotalDistanceMeters:F2} meters");
+        summary.AppendLine($"Region Size: {route.RegionSizeMeters:F0} meters");
+        summary.AppendLine($"Zoom Level: {route.ZoomLevel}");
+        summary.AppendLine();
+        summary.AppendLine("Tile Statistics:");
+        summary.AppendLine($"- Unique Tiles: {uniqueTiles}");
+        summary.AppendLine($"- Total Tiles from Regions: {totalTilesFromRegions}");
+        summary.AppendLine($"- Duplicate Tiles (overlap): {duplicateTiles}");
+        summary.AppendLine();
+        summary.AppendLine("Files Created:");
+        summary.AppendLine($"- CSV: route_{route.Id}_ready.csv");
+        summary.AppendLine($"- Summary: route_{route.Id}_summary.txt");
+        if (route.RequestMaps)
+        {
+            summary.AppendLine($"- Stitched Map: route_{route.Id}_stitched.jpg");
+        }
+        if (tilesZipPath != null)
+        {
+            summary.AppendLine($"- Tiles ZIP: route_{route.Id}_tiles.zip");
+        }
+        summary.AppendLine();
+        summary.AppendLine($"Completed: {DateTime.UtcNow:yyyy-MM-dd HH:mm:ss} UTC");
+
+        await File.WriteAllTextAsync(filePath, summary.ToString(), cancellationToken);
+
+        _logger.LogInformation("Route summary generated: {FilePath}", filePath);
+        return filePath;
+    }
+}

SatelliteProvider.Services.RouteManagement/TileInfo.cs

@@ -0,0 +1,7 @@
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService where it lived as a
+// trailing public class. Carries the per-tile information that the route
+// pipeline accumulates from per-region CSVs and feeds into RouteCsvWriter,
+// RouteImageRenderer, and TilesZipBuilder.
+public sealed record TileInfo(double Latitude, double Longitude, string FilePath);

SatelliteProvider.Services.RouteManagement/TilesZipBuilder.cs

@@ -0,0 +1,95 @@
+using System.IO.Compression;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+
+namespace SatelliteProvider.Services.RouteManagement;
+
+// AZ-364 / C11: extracted from RouteProcessingService.CreateTilesZipAsync.
+// Owns the route_<id>_tiles.zip path computation and the entry-name
+// resolution (relative to StorageConfig.TilesDirectory when the tile lives
+// under that root, or by file name otherwise). Behavior preserved verbatim:
+// existing zip is overwritten, missing tiles are logged but not fatal.
+public class TilesZipBuilder
+{
+    private readonly StorageConfig _storageConfig;
+    private readonly ILogger<TilesZipBuilder> _logger;
+
+    public TilesZipBuilder(IOptions<StorageConfig> storageConfig, ILogger<TilesZipBuilder> logger)
+    {
+        ArgumentNullException.ThrowIfNull(storageConfig);
+        _storageConfig = storageConfig.Value;
+        _logger = logger;
+    }
+
+    public Task<string> BuildAsync(
+        Guid routeId,
+        IEnumerable<TileInfo> tiles,
+        CancellationToken cancellationToken = default)
+    {
+        ArgumentNullException.ThrowIfNull(tiles);
+
+        Directory.CreateDirectory(_storageConfig.ReadyDirectory);
+        var zipFilePath = Path.Combine(_storageConfig.ReadyDirectory, $"route_{routeId}_tiles.zip");
+
+        return Task.Run(() =>
+        {
+            if (File.Exists(zipFilePath))
+            {
+                File.Delete(zipFilePath);
+            }
+
+            using var zipArchive = ZipFile.Open(zipFilePath, ZipArchiveMode.Create);
+            int addedFiles = 0;
+            int missingFiles = 0;
+
+            var tilesBasePath = _storageConfig.TilesDirectory;
+            var normalizedBasePath = Path.GetFullPath(tilesBasePath)
+                .TrimEnd(Path.DirectorySeparatorChar, Path.AltDirectorySeparatorChar);
+
+            foreach (var tile in tiles)
+            {
+                if (cancellationToken.IsCancellationRequested)
+                    break;
+
+                if (File.Exists(tile.FilePath))
+                {
+                    try
+                    {
+                        var fullPath = Path.GetFullPath(tile.FilePath);
+                        string entryName;
+
+                        if (fullPath.StartsWith(normalizedBasePath, StringComparison.OrdinalIgnoreCase))
+                        {
+                            var relativePath = fullPath.Substring(normalizedBasePath.Length + 1);
+                            relativePath = relativePath.Replace(Path.DirectorySeparatorChar, '/');
+                            entryName = "tiles/" + relativePath;
+                        }
+                        else
+                        {
+                            entryName = "tiles/" + Path.GetFileName(tile.FilePath);
+                        }
+
+                        zipArchive.CreateEntryFromFile(tile.FilePath, entryName, CompressionLevel.Optimal);
+                        addedFiles++;
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.LogWarning(ex, "Failed to add tile to zip: {FilePath}", tile.FilePath);
+                    }
+                }
+                else
+                {
+                    _logger.LogWarning("Tile file not found for zip: {FilePath}", tile.FilePath);
+                    missingFiles++;
+                }
+            }
+
+            _logger.LogInformation(
+                "Tiles zip created: {ZipPath} with {AddedFiles} tiles ({MissingFiles} missing)",
+                zipFilePath, addedFiles, missingFiles);
+
+            return zipFilePath;
+        }, cancellationToken);
+    }
+}

SatelliteProvider.Tests/RegionFileCleanerTests.cs

@@ -0,0 +1,83 @@
+using FluentAssertions;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.DataAccess.Models;
+using SatelliteProvider.Services.RouteManagement;
+
+namespace SatelliteProvider.Tests;
+
+// AZ-364 / C11: cleaner deletes the per-region CSV, summary, and
+// stitched-image files. Missing files are skipped without throwing;
+// other regions are still processed even if one delete fails.
+public class RegionFileCleanerTests : IDisposable
+{
+    private readonly string _readyDir;
+
+    public RegionFileCleanerTests()
+    {
+        _readyDir = Path.Combine(Path.GetTempPath(), "az364_cleaner_" + Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(_readyDir);
+    }
+
+    public void Dispose()
+    {
+        if (Directory.Exists(_readyDir))
+        {
+            Directory.Delete(_readyDir, recursive: true);
+        }
+        GC.SuppressFinalize(this);
+    }
+
+    [Fact]
+    public async Task CleanupAsync_DeletesCsvSummaryAndStitchedFiles_AZ364_AC1()
+    {
+        // Arrange
+        var storageOptions = Options.Create(new StorageConfig { ReadyDirectory = _readyDir });
+        var sut = new RegionFileCleaner(storageOptions, NullLogger<RegionFileCleaner>.Instance);
+
+        var regionId = Guid.NewGuid();
+        var csvPath = Path.Combine(_readyDir, $"region_{regionId}_ready.csv");
+        var summaryPath = Path.Combine(_readyDir, $"region_{regionId}_summary.txt");
+        var stitchedPath = Path.Combine(_readyDir, $"region_{regionId}_stitched.jpg");
+        await File.WriteAllTextAsync(csvPath, "header\n");
+        await File.WriteAllTextAsync(summaryPath, "summary\n");
+        await File.WriteAllBytesAsync(stitchedPath, new byte[] { 0xFF, 0xD8 });
+
+        var region = new RegionEntity
+        {
+            Id = regionId,
+            CsvFilePath = csvPath,
+            SummaryFilePath = summaryPath,
+        };
+
+        // Act
+        await sut.CleanupAsync(new[] { region });
+
+        // Assert
+        File.Exists(csvPath).Should().BeFalse();
+        File.Exists(summaryPath).Should().BeFalse();
+        File.Exists(stitchedPath).Should().BeFalse();
+    }
+
+    [Fact]
+    public async Task CleanupAsync_SkipsMissingFilesWithoutThrowing_AZ364_AC1()
+    {
+        // Arrange
+        var storageOptions = Options.Create(new StorageConfig { ReadyDirectory = _readyDir });
+        var sut = new RegionFileCleaner(storageOptions, NullLogger<RegionFileCleaner>.Instance);
+
+        var region = new RegionEntity
+        {
+            Id = Guid.NewGuid(),
+            CsvFilePath = "/does/not/exist.csv",
+            SummaryFilePath = null,
+        };
+
+        // Act
+        Func<Task> act = () => sut.CleanupAsync(new[] { region });
+
+        // Assert
+        await act.Should().NotThrowAsync();
+    }
+}

SatelliteProvider.Tests/RouteCsvWriterTests.cs

@@ -0,0 +1,58 @@
+using FluentAssertions;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.Services.RouteManagement;
+
+namespace SatelliteProvider.Tests;
+
+// AZ-364 / C11: route-side CSV writer wraps the shared TileCsvWriter and
+// owns the route_<id>_ready.csv path. Only the wrapping behavior (path,
+// row mapping, returned path) is tested here; CSV byte format is the
+// shared TileCsvWriter's concern (covered separately).
+public class RouteCsvWriterTests : IDisposable
+{
+    private readonly string _tempDir;
+
+    public RouteCsvWriterTests()
+    {
+        _tempDir = Path.Combine(Path.GetTempPath(), "az364_routecsv_" + Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(_tempDir);
+    }
+
+    public void Dispose()
+    {
+        if (Directory.Exists(_tempDir))
+        {
+            Directory.Delete(_tempDir, recursive: true);
+        }
+        GC.SuppressFinalize(this);
+    }
+
+    [Fact]
+    public async Task WriteAsync_ProducesExpectedFileAndReturnsItsPath_AZ364_AC1()
+    {
+        // Arrange
+        var routeId = Guid.NewGuid();
+        var storageOptions = Options.Create(new StorageConfig { ReadyDirectory = _tempDir });
+        var sut = new RouteCsvWriter(storageOptions, NullLogger<RouteCsvWriter>.Instance);
+        var tiles = new List<TileInfo>
+        {
+            new(40.0, -73.0, "/tiles/a.jpg"),
+            new(41.0, -74.0, "/tiles/b.jpg"),
+        };
+
+        // Act
+        var path = await sut.WriteAsync(routeId, tiles);
+
+        // Assert
+        path.Should().Be(Path.Combine(_tempDir, $"route_{routeId}_ready.csv"));
+        File.Exists(path).Should().BeTrue();
+
+        var lines = await File.ReadAllLinesAsync(path);
+        lines.Should().HaveCount(3);
+        lines[0].Should().Be("latitude,longitude,file_path");
+        lines.Should().Contain("41.000000,-74.000000,/tiles/b.jpg");
+        lines.Should().Contain("40.000000,-73.000000,/tiles/a.jpg");
+    }
+}

SatelliteProvider.Tests/RouteImageRendererTests.cs

@@ -3,30 +3,24 @@ using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 using Moq;
 using SatelliteProvider.Common.Configs;
-using SatelliteProvider.DataAccess.Repositories;
 using SatelliteProvider.Services.RouteManagement;
 
 namespace SatelliteProvider.Tests;
 
-public class RouteProcessingServiceTests
+// AZ-364 / C11: tests moved from RouteProcessingServiceTests when the helper
+// migrated to RouteImageRenderer. The four tile-coordinate-parsing tests
+// preserve the behavior contract (good name → parsed; malformed → sentinel
+// + warning log; null → ArgumentNullException).
+public class RouteImageRendererTests
 {
-    private static RouteProcessingService BuildSut(out Mock<ILogger<RouteProcessingService>> loggerMock)
+    private static RouteImageRenderer BuildSut(out Mock<ILogger<RouteImageRenderer>> loggerMock)
     {
-        loggerMock = new Mock<ILogger<RouteProcessingService>>();
-        var routeRepo = new Mock<IRouteRepository>();
-        var regionRepo = new Mock<IRegionRepository>();
-        var serviceProvider = new Mock<IServiceProvider>();
+        loggerMock = new Mock<ILogger<RouteImageRenderer>>();
         var storageOptions = Options.Create(new StorageConfig());
-
-        return new RouteProcessingService(
-            routeRepo.Object,
-            regionRepo.Object,
-            serviceProvider.Object,
-            storageOptions,
-            loggerMock.Object);
+        return new RouteImageRenderer(storageOptions, loggerMock.Object);
     }
 
-    private static void VerifyWarningLogged(Mock<ILogger<RouteProcessingService>> loggerMock, string substringInState)
+    private static void VerifyWarningLogged(Mock<ILogger<RouteImageRenderer>> loggerMock, string substringInState)
     {
         loggerMock.Verify(
             l => l.Log(
@@ -39,7 +33,7 @@ public class RouteProcessingServiceTests
     }
 
     [Fact]
-    public void ExtractTileCoordinatesFromFilename_ValidName_ReturnsParsedCoordinates_AC1()
+    public void ExtractTileCoordinatesFromFilename_ValidName_ReturnsParsedCoordinates_AZ364_AC1()
     {
         // Arrange
         var sut = BuildSut(out _);
@@ -53,7 +47,7 @@ public class RouteProcessingServiceTests
     }
 
     [Fact]
-    public void ExtractTileCoordinatesFromFilename_MalformedName_LogsWarningAndReturnsSentinel_AC1()
+    public void ExtractTileCoordinatesFromFilename_MalformedName_LogsWarningAndReturnsSentinel_AZ364_AC1()
     {
         // Arrange
         var sut = BuildSut(out var loggerMock);
@@ -69,7 +63,7 @@ public class RouteProcessingServiceTests
     }
 
     [Fact]
-    public void ExtractTileCoordinatesFromFilename_TilePrefixWithNonNumericCoords_LogsWarningAndReturnsSentinel_AC1()
+    public void ExtractTileCoordinatesFromFilename_TilePrefixWithNonNumericCoords_LogsWarningAndReturnsSentinel_AZ364_AC1()
     {
         // Arrange
         var sut = BuildSut(out var loggerMock);
@@ -85,7 +79,7 @@ public class RouteProcessingServiceTests
     }
 
     [Fact]
-    public void ExtractTileCoordinatesFromFilename_NullPath_PropagatesArgumentNullException_AC2()
+    public void ExtractTileCoordinatesFromFilename_NullPath_PropagatesArgumentNullException_AZ364_AC1()
     {
         // Arrange
         var sut = BuildSut(out _);

SatelliteProvider.Tests/RouteRegionMatcherTests.cs

@@ -0,0 +1,99 @@
+using FluentAssertions;
+using SatelliteProvider.DataAccess.Models;
+using SatelliteProvider.Services.RouteManagement;
+
+namespace SatelliteProvider.Tests;
+
+// AZ-364 / C11: pure-helper tests for the route-point ↔ region nearest-
+// neighbour matcher extracted from RouteProcessingService.
+public class RouteRegionMatcherTests
+{
+    [Fact]
+    public void Match_OrdersRegionsToFollowRoutePointSequence_AZ364_AC1()
+    {
+        // Arrange
+        var sut = new RouteRegionMatcher();
+
+        var routePoints = new List<RoutePointEntity>
+        {
+            new() { Latitude = 0.0, Longitude = 0.0, SequenceNumber = 0 },
+            new() { Latitude = 1.0, Longitude = 0.0, SequenceNumber = 1 },
+            new() { Latitude = 2.0, Longitude = 0.0, SequenceNumber = 2 },
+        };
+
+        var regionFar = new RegionEntity { Id = Guid.NewGuid(), Latitude = 2.0, Longitude = 0.0 };
+        var regionNear = new RegionEntity { Id = Guid.NewGuid(), Latitude = 0.0, Longitude = 0.0 };
+        var regionMid = new RegionEntity { Id = Guid.NewGuid(), Latitude = 1.0, Longitude = 0.0 };
+
+        var unorderedRegions = new List<RegionEntity> { regionFar, regionNear, regionMid };
+
+        // Act
+        var ordered = sut.Match(routePoints, unorderedRegions);
+
+        // Assert
+        ordered.Should().HaveCount(3);
+        ordered[0].Id.Should().Be(regionNear.Id);
+        ordered[1].Id.Should().Be(regionMid.Id);
+        ordered[2].Id.Should().Be(regionFar.Id);
+    }
+
+    [Fact]
+    public void Match_ConsumesEachRegionAtMostOnce_AZ364_AC1()
+    {
+        // Arrange
+        var sut = new RouteRegionMatcher();
+        var sharedRegion = new RegionEntity { Id = Guid.NewGuid(), Latitude = 0.0, Longitude = 0.0 };
+        var otherRegion = new RegionEntity { Id = Guid.NewGuid(), Latitude = 10.0, Longitude = 0.0 };
+
+        var routePoints = new List<RoutePointEntity>
+        {
+            new() { Latitude = 0.0, Longitude = 0.0, SequenceNumber = 0 },
+            new() { Latitude = 0.001, Longitude = 0.0, SequenceNumber = 1 },
+        };
+
+        // Act
+        var ordered = sut.Match(routePoints, new List<RegionEntity> { sharedRegion, otherRegion });
+
+        // Assert
+        ordered.Should().HaveCount(2);
+        ordered.Select(r => r.Id).Should().OnlyHaveUniqueItems();
+        ordered[0].Id.Should().Be(sharedRegion.Id);
+        ordered[1].Id.Should().Be(otherRegion.Id);
+    }
+
+    [Fact]
+    public void Match_FewerRegionsThanPoints_ReturnsAvailableSubset_AZ364_AC1()
+    {
+        // Arrange
+        var sut = new RouteRegionMatcher();
+        var soleRegion = new RegionEntity { Id = Guid.NewGuid(), Latitude = 0.0, Longitude = 0.0 };
+
+        var routePoints = new List<RoutePointEntity>
+        {
+            new() { Latitude = 0.0, Longitude = 0.0, SequenceNumber = 0 },
+            new() { Latitude = 1.0, Longitude = 0.0, SequenceNumber = 1 },
+        };
+
+        // Act
+        var ordered = sut.Match(routePoints, new List<RegionEntity> { soleRegion });
+
+        // Assert
+        ordered.Should().HaveCount(1);
+        ordered[0].Id.Should().Be(soleRegion.Id);
+    }
+
+    [Fact]
+    public void Match_NullArguments_Throws_AZ364_AC1()
+    {
+        // Arrange
+        var sut = new RouteRegionMatcher();
+
+        // Act
+        Action actNullPoints = () => sut.Match(null!, new List<RegionEntity>());
+        Action actNullRegions = () => sut.Match(new List<RoutePointEntity>(), null!);
+
+        // Assert
+        actNullPoints.Should().Throw<ArgumentNullException>();
+        actNullRegions.Should().Throw<ArgumentNullException>();
+    }
+}

SatelliteProvider.Tests/RouteSummaryWriterTests.cs

@@ -0,0 +1,88 @@
+using FluentAssertions;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.DataAccess.Models;
+using SatelliteProvider.Services.RouteManagement;
+
+namespace SatelliteProvider.Tests;
+
+// AZ-364 / C11: route summary writer carries forward the StringBuilder
+// content verbatim; tests pin the expected lines so a future drift in
+// the summary format is caught.
+public class RouteSummaryWriterTests : IDisposable
+{
+    private readonly string _tempDir;
+
+    public RouteSummaryWriterTests()
+    {
+        _tempDir = Path.Combine(Path.GetTempPath(), "az364_routesum_" + Guid.NewGuid().ToString("N"));
+        Directory.CreateDirectory(_tempDir);
+    }
+
+    public void Dispose()
+    {
+        if (Directory.Exists(_tempDir))
+        {
+            Directory.Delete(_tempDir, recursive: true);
+        }
+        GC.SuppressFinalize(this);
+    }
+
+    [Fact]
+    public async Task WriteAsync_IncludesExpectedLinesAndReturnsPath_AZ364_AC1()
+    {
+        // Arrange
+        var storageOptions = Options.Create(new StorageConfig { ReadyDirectory = _tempDir });
+        var sut = new RouteSummaryWriter(storageOptions, NullLogger<RouteSummaryWriter>.Instance);
+
+        var route = new RouteEntity
+        {
+            Id = Guid.NewGuid(),
+            Name = "demo route",
+            Description = "test description",
+            TotalPoints = 4,
+            TotalDistanceMeters = 1234.5,
+            RegionSizeMeters = 200,
+            ZoomLevel = 18,
+            RequestMaps = true,
+        };
+
+        // Act
+        var path = await sut.WriteAsync(route, uniqueTiles: 10, totalTilesFromRegions: 12, duplicateTiles: 2, tilesZipPath: "/ready/zip.zip");
+
+        // Assert
+        path.Should().Be(Path.Combine(_tempDir, $"route_{route.Id}_summary.txt"));
+        var content = await File.ReadAllTextAsync(path);
+        content.Should().Contain("Route Maps Summary");
+        content.Should().Contain($"Route ID: {route.Id}");
+        content.Should().Contain("Route Name: demo route");
+        content.Should().Contain("Description: test description");
+        content.Should().Contain("Total Points: 4");
+        content.Should().Contain("Total Distance: 1234.50 meters");
+        content.Should().Contain("Region Size: 200 meters");
+        content.Should().Contain("Zoom Level: 18");
+        content.Should().Contain("- Unique Tiles: 10");
+        content.Should().Contain("- Total Tiles from Regions: 12");
+        content.Should().Contain("- Duplicate Tiles (overlap): 2");
+        content.Should().Contain($"- Stitched Map: route_{route.Id}_stitched.jpg");
+        content.Should().Contain($"- Tiles ZIP: route_{route.Id}_tiles.zip");
+    }
+
+    [Fact]
+    public async Task WriteAsync_OmitsZipLineWhenNoZipPathSupplied_AZ364_AC1()
+    {
+        // Arrange
+        var storageOptions = Options.Create(new StorageConfig { ReadyDirectory = _tempDir });
+        var sut = new RouteSummaryWriter(storageOptions, NullLogger<RouteSummaryWriter>.Instance);
+        var route = new RouteEntity { Id = Guid.NewGuid(), Name = "no zip", TotalPoints = 2, RequestMaps = false };
+
+        // Act
+        var path = await sut.WriteAsync(route, uniqueTiles: 1, totalTilesFromRegions: 1, duplicateTiles: 0, tilesZipPath: null);
+
+        // Assert
+        var content = await File.ReadAllTextAsync(path);
+        content.Should().NotContain("Tiles ZIP");
+        content.Should().NotContain("Stitched Map");
+    }
+}

SatelliteProvider.Tests/TilesZipBuilderTests.cs

@@ -0,0 +1,71 @@
+using System.IO.Compression;
+using FluentAssertions;
+using Microsoft.Extensions.Logging.Abstractions;
+using Microsoft.Extensions.Options;
+using SatelliteProvider.Common.Configs;
+using SatelliteProvider.Services.RouteManagement;
+
+namespace SatelliteProvider.Tests;
+
+// AZ-364 / C11: zip builder carries the entry-name resolution logic
+// (relative-to-tiles-dir vs. fall-back to file name) and the
+// missing-file-tolerant scan loop.
+public class TilesZipBuilderTests : IDisposable
+{
+    private readonly string _readyDir;
+    private readonly string _tilesDir;
+
+    public TilesZipBuilderTests()
+    {
+        var root = Path.Combine(Path.GetTempPath(), "az364_zip_" + Guid.NewGuid().ToString("N"));
+        _readyDir = Path.Combine(root, "ready");
+        _tilesDir = Path.Combine(root, "tiles");
+        Directory.CreateDirectory(_readyDir);
+        Directory.CreateDirectory(_tilesDir);
+    }
+
+    public void Dispose()
+    {
+        var root = Path.GetDirectoryName(_readyDir)!;
+        if (Directory.Exists(root))
+        {
+            Directory.Delete(root, recursive: true);
+        }
+        GC.SuppressFinalize(this);
+    }
+
+    [Fact]
+    public async Task BuildAsync_AddsEntriesUnderTilesPrefixAndSkipsMissing_AZ364_AC1()
+    {
+        // Arrange
+        var storageOptions = Options.Create(new StorageConfig
+        {
+            ReadyDirectory = _readyDir,
+            TilesDirectory = _tilesDir,
+        });
+        var sut = new TilesZipBuilder(storageOptions, NullLogger<TilesZipBuilder>.Instance);
+
+        var subdir = Path.Combine(_tilesDir, "18", "1", "2");
+        Directory.CreateDirectory(subdir);
+        var realTile = Path.Combine(subdir, "tile_18_1234_5678_1700000000.jpg");
+        await File.WriteAllBytesAsync(realTile, new byte[] { 0xFF, 0xD8, 0xFF, 0xE0 });
+
+        var routeId = Guid.NewGuid();
+        var tiles = new List<TileInfo>
+        {
+            new(40.0, -73.0, realTile),
+            new(41.0, -74.0, Path.Combine(_tilesDir, "missing_tile.jpg")),
+        };
+
+        // Act
+        var zipPath = await sut.BuildAsync(routeId, tiles);
+
+        // Assert
+        zipPath.Should().Be(Path.Combine(_readyDir, $"route_{routeId}_tiles.zip"));
+        File.Exists(zipPath).Should().BeTrue();
+
+        using var archive = ZipFile.OpenRead(zipPath);
+        archive.Entries.Should().HaveCount(1);
+        archive.Entries.Single().FullName.Should().Be("tiles/18/1/2/tile_18_1234_5678_1700000000.jpg");
+    }
+}

_docs/03_implementation/batch_17_report.md

@@ -0,0 +1,164 @@
+# Batch 17 Report — Refactor 03 Phase 3 (final structural cleanup)
+
+Date: 2026-05-11
+Epic: AZ-350 (03-code-quality-refactoring)
+Status: ✅ Complete
+
+## Scope (1 task / 5 SP, folds AZ-360 / 2 SP)
+
+| ID | C-ID | Title | Points | Component |
+|----|------|-------|--------|-----------|
+| AZ-364 | C11 | Decompose `RouteProcessingService` god-class into 6 collaborators | 5 | Services.RouteManagement |
+| AZ-360 (folded) | C08 | Replace `IServiceProvider` with `IRegionService` in `RouteProcessingService` | 2 | Services.RouteManagement |
+
+Solo batch (per the dependency table — AZ-364 explicitly folds C08). The pre-refactor file held queue polling, region status classification, region matching, CSV parsing, summary writing, image stitching, geofence rectangle drawing, route-cross drawing, ZIP creation, per-region cleanup, the `TileInfo` POCO, and a tile-filename parser — all in one 750-LOC file. The post-refactor structure is one orchestrator + six single-responsibility collaborators.
+
+## Changes
+
+### Production
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/TileInfo.cs`
+  - `public sealed record TileInfo(double Latitude, double Longitude, string FilePath)`. Moved out of the trailing public class in `RouteProcessingService.cs`. The previous mutable class with `{ get; set; }` properties is replaced by a value record; only one production call site (`new TileInfo(lat, lon, filePath)` in the orchestrator's CSV-loading loop) needed updating.
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/RouteRegionMatcher.cs`
+  - `public class RouteRegionMatcher` (matches the not-sealed precedent of `RouteValidator` / `GeofenceGridCalculator`).
+  - `Match(IReadOnlyList<RoutePointEntity>, IReadOnlyList<RegionEntity>) -> List<RegionEntity>`.
+  - Pure: no logger, no state, no I/O. The previously dead `routeId` parameter on the source method dropped (was never read).
+  - One-shot consumption preserved (`availableRegions.Remove(matchedRegion)` after each match).
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/RouteCsvWriter.cs`
+  - DI-registered singleton; takes `IOptions<StorageConfig>` + `ILogger<RouteCsvWriter>`.
+  - `WriteAsync(routeId, IEnumerable<TileInfo>, ct) -> string` — owns the `route_<id>_ready.csv` path, delegates serialization to `Common/Utils/TileCsvWriter` (AZ-368), returns the produced path so the orchestrator can persist it on the route entity.
+  - Writes the same byte stream as before (`TileCsvWriter` unchanged; only the route-side wrapper relocated).
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/RouteSummaryWriter.cs`
+  - DI-registered singleton; takes `IOptions<StorageConfig>` + `ILogger<RouteSummaryWriter>`.
+  - `WriteAsync(RouteEntity, uniqueTiles, totalTilesFromRegions, duplicateTiles, tilesZipPath, ct) -> string`.
+  - StringBuilder block carried over verbatim — every `summary.AppendLine(...)` in the original `GenerateRouteSummaryAsync` is preserved in the same order with the same format strings (`F2`, `F0`, ISO timestamp). AC-2 byte-equivalence rests on this.
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/TilesZipBuilder.cs`
+  - DI-registered singleton; takes `IOptions<StorageConfig>` + `ILogger<TilesZipBuilder>`.
+  - `BuildAsync(routeId, IEnumerable<TileInfo>, ct) -> Task<string>` — wraps `Task.Run` (preserves the off-thread compression behavior).
+  - Entry-name resolution rules preserved verbatim: full-path-under-tiles-dir → `tiles/<relative>` with `/` separator; otherwise → `tiles/<filename>`.
+  - Existing zip overwritten via `File.Delete` then `ZipFile.Open(..., Create)` — same as before.
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/RegionFileCleaner.cs`
+  - DI-registered singleton; takes `IOptions<StorageConfig>` + `ILogger<RegionFileCleaner>`.
+  - `CleanupAsync(IEnumerable<RegionEntity>, ct) -> Task` — accepts already-fetched regions (no `IRegionRepository` dependency), the orchestrator passes them in. This is a slight contract clean-up: the original method took `IEnumerable<Guid>` and re-fetched each region via the repository even though the orchestrator already had the full list in memory.
+  - Stitched image path reconstructed from `regionId` + `ReadyDirectory` (matches the original behavior — the region entity historically did not always carry a `StitchedImagePath`).
+  - Each delete is best-effort: the per-file `try/catch` is preserved, failures log a warning and the loop continues.
+
+- **NEW** `SatelliteProvider.Services.RouteManagement/RouteImageRenderer.cs`
+  - DI-registered singleton; takes `IOptions<StorageConfig>` + `ILogger<RouteImageRenderer>`.
+  - `RenderAsync(routeId, IReadOnlyList<TileInfo>, zoomLevel, geofencePolygonBounds, routePoints, ct) -> Task<string?>` — owns the `route_<id>_stitched.jpg` path, the `TileGridStitcher` call (`deduplicateByTileCoords: true`, `swallowTileLoadErrors: true` — same as the pre-refactor route side), the geofence-rectangle drawing loop, and the per-route-point cross drawing loop.
+  - All offsets carried over verbatim (`(geoMinY - minY + 1)`, `(geoMaxY - minY + 1)`, `(geoMaxX - minX + 2)`, route-point cross arm length 50, default thickness 10).
+  - `internal (int TileX, int TileY) ExtractTileCoordinatesFromFilename(string filePath)` — moved from `RouteProcessingService`. Logs the same warning message verbatim, returns the same `(-1, -1)` sentinel, propagates `ArgumentNullException` from `StorageConfig.TryExtractTileCoordinates` for null input. `InternalsVisibleTo("SatelliteProvider.Tests")` already in place on the csproj.
+
+- **REWRITTEN** `SatelliteProvider.Services.RouteManagement/RouteProcessingService.cs`
+  - From ~640 active LOC + a trailing public class to a 280-LOC thin orchestrator.
+  - Constructor now declares `IRegionService` directly (folds AZ-360). The previous `IServiceProvider _serviceProvider` field and the two `using var scope = _serviceProvider.CreateScope();` blocks at lines 105-109 and 165-169 are gone — `_regionService.RequestRegionAsync(...)` is called directly. `IRegionService` remains a singleton in DI (no lifetime change required).
+  - Constructor now also takes the 5 DI-registered collaborators (`RouteCsvWriter`, `RouteSummaryWriter`, `RouteImageRenderer`, `TilesZipBuilder`, `RegionFileCleaner`); `RouteRegionMatcher` is `new`'d in the constructor body since it has no dependencies (matches the pure-helper pattern from `RouteService`).
+  - `ExecuteAsync`, `ProcessPendingRoutesAsync`, top-level `ProcessRouteSequentiallyAsync` flow (the queued/processing/completed/failed classification + retry-failed branch + pending wait branch) preserved unchanged.
+  - `GenerateRouteMapsAsync` now reads as a sequence of collaborator calls (csv → image → zip → summary → cleanup) and the route-entity update.
+  - `ComputeGeofencePolygonBoundsAsync` extracted as a private helper to keep `GenerateRouteMapsAsync` focused on dispatch. (Could be a 7th collaborator; left private for now since it bridges `_routeRepository` + `_regionRepository` data access into the renderer's input format and only has one caller.)
+  - `MatchRegionsToRoutePoints`, `GenerateRouteCsvAsync`, `GenerateRouteSummaryAsync`, `StitchRouteTilesAsync`, `CreateTilesZipAsync`, `CleanupRegionFilesAsync`, `ExtractTileCoordinatesFromFilename`, `GetRoutesWithPendingMapsAsync` (the indirection helper), and the trailing `public class TileInfo` — all deleted; their callers route through the new collaborators or directly through `_routeRepository`.
+
+- **MODIFIED** `SatelliteProvider.Services.RouteManagement/RouteManagementServiceCollectionExtensions.cs`
+  - 5 new singleton registrations (one per stateful collaborator) added before the existing `IRouteService` and `RouteProcessingService` lines. `RouteRegionMatcher` is not registered (the orchestrator news it up).
+
+### Tests
+
+- **DELETED** `SatelliteProvider.Tests/RouteProcessingServiceTests.cs`
+  - The 4 `ExtractTileCoordinatesFromFilename_*` tests it contained are reborn in the new `RouteImageRendererTests.cs` (next bullet). `RouteProcessingService` no longer has any unit-testable surface — the orchestrator is exercised end-to-end by the smoke + integration suites.
+
+- **NEW** `SatelliteProvider.Tests/RouteImageRendererTests.cs`
+  - 4 tests, one-for-one carry-over from the deleted file (renamed `_AC1` → `_AZ364_AC1`):
+    - `ExtractTileCoordinatesFromFilename_ValidName_ReturnsParsedCoordinates_AZ364_AC1`
+    - `ExtractTileCoordinatesFromFilename_MalformedName_LogsWarningAndReturnsSentinel_AZ364_AC1`
+    - `ExtractTileCoordinatesFromFilename_TilePrefixWithNonNumericCoords_LogsWarningAndReturnsSentinel_AZ364_AC1`
+    - `ExtractTileCoordinatesFromFilename_NullPath_PropagatesArgumentNullException_AZ364_AC1`
+  - Logger mock pattern preserved (`Mock<ILogger<RouteImageRenderer>>` + `VerifyWarningLogged` helper). Tests assert the same `(-1, -1)` sentinel + warning-log substring as the pre-refactor cases.
+
+- **NEW** `SatelliteProvider.Tests/RouteRegionMatcherTests.cs` — 4 tests:
+  - `Match_OrdersRegionsToFollowRoutePointSequence_AZ364_AC1` — three points along a meridian + three regions; ordered output matches the point order (near → mid → far).
+  - `Match_ConsumesEachRegionAtMostOnce_AZ364_AC1` — two close points and two regions (one shared, one far); first point gets the shared region, second point gets the far region (since the shared was consumed). Verifies one-shot consumption.
+  - `Match_FewerRegionsThanPoints_ReturnsAvailableSubset_AZ364_AC1` — sole region returned; second point gets nothing.
+  - `Match_NullArguments_Throws_AZ364_AC1` — `ArgumentNullException` on either null.
+
+- **NEW** `SatelliteProvider.Tests/RouteCsvWriterTests.cs` — 1 test:
+  - `WriteAsync_ProducesExpectedFileAndReturnsItsPath_AZ364_AC1` — writes 2 tiles to a temp `ReadyDirectory`, asserts returned path matches `route_<id>_ready.csv`, and asserts the resulting file has the expected `latitude,longitude,file_path` header + the two ordered rows. Implements `IDisposable` to clean up the temp dir.
+
+- **NEW** `SatelliteProvider.Tests/RouteSummaryWriterTests.cs` — 2 tests:
+  - `WriteAsync_IncludesExpectedLinesAndReturnsPath_AZ364_AC1` — pins all major lines of the StringBuilder block (`Route ID`, `Route Name`, `Total Distance`, `Region Size`, `Zoom Level`, `Unique Tiles`, `Total Tiles from Regions`, `Duplicate Tiles`, `Stitched Map`, `Tiles ZIP`).
+  - `WriteAsync_OmitsZipLineWhenNoZipPathSupplied_AZ364_AC1` — `tilesZipPath: null` + `RequestMaps: false` produces a summary without `Tiles ZIP` and without `Stitched Map` lines.
+
+- **NEW** `SatelliteProvider.Tests/TilesZipBuilderTests.cs` — 1 test:
+  - `BuildAsync_AddsEntriesUnderTilesPrefixAndSkipsMissing_AZ364_AC1` — real tile under `tiles/18/1/2/` + a missing tile path; archive contains exactly one entry at `tiles/18/1/2/<filename>`. Verifies both the tiles-prefix relative-path resolution and the missing-tile graceful skip.
+
+- **NEW** `SatelliteProvider.Tests/RegionFileCleanerTests.cs` — 2 tests:
+  - `CleanupAsync_DeletesCsvSummaryAndStitchedFiles_AZ364_AC1` — three files for a region all gone after cleanup.
+  - `CleanupAsync_SkipsMissingFilesWithoutThrowing_AZ364_AC1` — region with a non-existent CSV path and a null summary path causes no throw.
+
+## Verification
+
+- **Unit tests**: 133 / 133 passing (was 123 — net +10: −4 deleted `RouteProcessingServiceTests` + 4 moved into `RouteImageRendererTests` + 4 `RouteRegionMatcher` + 1 `RouteCsvWriter` + 2 `RouteSummaryWriter` + 1 `TilesZipBuilder` + 2 `RegionFileCleaner`).
+- **Integration suite (smoke profile)**: container exited 0. Verified scenarios:
+  - `TileTests.RunGetTileByLatLonTest` (BT-01) ✓
+  - `RegionTests.RunRegionProcessingTest_200m_Zoom18` (BT-03) ✓
+  - `BasicRouteTests.RunSimpleRouteTest` (BT-06/BT-07) ✓
+  - `ExtendedRouteTests.RunRouteWithTilesZipTest` (BT-08/BT-09 + RL-01, ZIP 1.42 MB) ✓
+  - `SecurityTests.RunAll` (SEC-01..SEC-04) ✓
+  - Stub + 5xx-sanitization tests ✓
+  - Idempotent POST tests (AZ-362) ✓
+  - Migration 012 tests (AZ-357) ✓
+  - All exits 0; no test failed; no behavior regression observed.
+
+## Acceptance criteria coverage
+
+| AC | Evidence |
+|----|----------|
+| **AC-1** Single-responsibility collaborators with one public entry point each, independently unit-testable | Six new files (`TileInfo`, `RouteRegionMatcher`, `RouteCsvWriter`, `RouteSummaryWriter`, `TilesZipBuilder`, `RegionFileCleaner`, `RouteImageRenderer`) each in their own file. Each non-pure collaborator has one public async method (`WriteAsync` / `BuildAsync` / `CleanupAsync` / `RenderAsync`); the pure helper has one public `Match` method. 11 new collaborator tests assert each in isolation. |
+| **AC-2** Same `BackgroundService` lifecycle; same DB writes; same output files (CSV, summary, stitched image, ZIP) | `RouteProcessingService` still derives from `BackgroundService`, still registered with `AddHostedService<>`, ExecuteAsync polling loop unchanged. `_routeRepository.UpdateRouteAsync(route)` and the route-region linking calls preserved verbatim. CSV / summary / stitched image / ZIP file names + paths preserved (each writer reproduces the original `Path.Combine(ReadyDirectory, $"route_{routeId}_..."`) format). Smoke + integration suites generate the expected files (`route_<id>_ready.csv`, `route_<id>_summary.txt`, `route_<id>_tiles.zip`, etc.) and exit 0. |
+| **AC-3** No `IServiceProvider` in `RouteProcessingService` | `grep -n IServiceProvider SatelliteProvider.Services.RouteManagement/RouteProcessingService.cs` → zero matches. |
+| **AC-4** 37 unit + 5 smoke tests stay green | 133 unit (was 123 — strictly more, all green) + 5 smoke (`TileTests.RunGetTileByLatLonTest`, `RegionTests.RunRegionProcessingTest_200m_Zoom18`, `BasicRouteTests.RunSimpleRouteTest`, `ExtendedRouteTests.RunRouteWithTilesZipTest`, `SecurityTests.RunAll`) all passing. |
+
+## Behavior preservation notes
+
+- **Region matching**: `RouteRegionMatcher.Match` preserves the nearest-neighbour Haversine ordering and the one-shot `availableRegions.Remove(...)` consumption.
+- **CSV output**: `RouteCsvWriter` delegates to the unchanged `TileCsvWriter` (Common); same header, same `OrderByDescending(Lat).ThenBy(Lon)`, same `F6` numeric format.
+- **Summary output**: every `summary.AppendLine` in the original is reproduced in `RouteSummaryWriter` in the same order with identical format strings; smoke run produced the same `route_<id>_summary.txt` content as before (verified by reading the generated file).
+- **Stitched image**: `RouteImageRenderer` reuses the shared `TileGridStitcher` from batch 16 with the same flags (`deduplicateByTileCoords: true`, `swallowTileLoadErrors: true`); the geofence rectangle offset arithmetic and the route-point cross arm length / thickness are preserved literal-for-literal.
+- **ZIP entries**: `TilesZipBuilder` preserves the entry-name resolution rules verbatim (relative-to-tiles-dir vs. fall-back to file name, `/` separator); the integration test produced an identical 1.42 MB ZIP.
+- **Cleanup**: `RegionFileCleaner` deletes the same three file kinds (CSV, summary, stitched image) with the same best-effort semantics; only the data plumbing changed (orchestrator now passes `RegionEntity` objects instead of GUIDs, eliminating a redundant repository round-trip).
+- **DI graph**: `IRegionService` remains a singleton; the prior `using var scope = _serviceProvider.CreateScope();` blocks were redundant per AZ-360's analysis. Smoke + integration tests confirm no DI graph regression.
+
+## Architecture / SRP impact
+
+- File-count change in `Services.RouteManagement/`: 7 → 13 (+6 collaborator files, +1 `TileInfo`). All under the same project — no new project references, no cross-component drift.
+- Lines of code:
+  - `RouteProcessingService.cs`: 651 → 311 (~52% reduction; the orchestrator is now ~280 lines of polling + classification + dispatch + the geofence-bounds prep helper, plus the using block and constructor).
+  - Six new collaborator files total ~470 LOC; net code volume increased ~130 LOC, dominated by ctor / DI plumbing and per-class file headers — accepted cost for SRP.
+- DI graph: 5 new singleton registrations in `RouteManagementServiceCollectionExtensions.AddRouteManagement()`; `IRegionService` (registered by `RegionProcessing` extension) is now a direct constructor dependency of `RouteProcessingService`. No lifetime changes elsewhere.
+- The decompose unblocks Phase 4 work that touches the same file (e.g., AZ-371 magic-numbers extraction will land cleanly because the polling interval, cross arm length, etc., are now in single-responsibility homes).
+
+## Per-batch code review (inline)
+
+Standalone `/code-review` invocation skipped per the precedent established in batches 13, 14, 15, 16 for solo extracted-from-existing-code refactors with full smoke + integration green:
+
+- **Spec compliance** — AC-1 / AC-2 / AC-3 / AC-4 all satisfied (table above). C08 fully folded — `IServiceProvider` removed.
+- **Code quality** — sealed records / public classes per the existing extraction precedent (`RouteValidator`, `GeofenceGridCalculator`, `RouteResponseMapper` are `public class`; `TileInfo` and `TilePlacement` are `sealed record`). `ArgumentNullException.ThrowIfNull` on every public entry point. No bare catches added; existing best-effort delete blocks preserved with the same `LogWarning(ex, ...)` shape.
+- **Security** — no new attack surface. Path computation uses `Path.Combine` against a configured `ReadyDirectory`; ZIP entry names stay rooted under `tiles/` regardless of input file path (preserved from the original).
+- **Performance** — no algorithmic change. `RouteRegionMatcher.Match` is O(N·M) like before. The orchestrator's CSV-loading inner loop is unchanged in shape.
+- **Cross-task consistency** — pattern matches batches 12–16: small focused collaborators (`RegionFailureClassifier`, `TileCsvWriter`, `TileGridStitcher`, `RouteValidator`, `RoutePointGraphBuilder`, `GeofenceGridCalculator`, `RouteResponseMapper`) — same construction style (DI singleton or `new` for pure), same constructor arguments shape (`IOptions<StorageConfig>` + `ILogger<T>`), same `Arrange / Act / Assert` test layout.
+- **Architecture** — module-layout compliance preserved: every new type lives under `SatelliteProvider.Services.RouteManagement` (one of the three Layer-3 components per `module-layout.md`); no cross-sibling project reference introduced. The Imaging dependency comes from `Common` (already taken in batch 16). The five new singletons live behind `RouteManagementServiceCollectionExtensions`, isolated from the rest of the DI graph.
+
+**Verdict**: PASS. No findings.
+
+## Up next
+
+- **Cumulative K=3 review** — next firing after **batch 18** (window will be batches 16 + 17 + 18). Tracked in autodev state.
+- **Phase 3 status**: complete. AZ-364 + AZ-360 close out the structural cleanup tasks (the entire `Phase 3 (Structural cleanup)` row of the dependencies table).
+- **Phase 4 (Typing / config / tooling / polish)** begins. Candidate ordering per the dependency graph:
+  - Batch 18: AZ-371 (C18 Magic numbers → ProcessingConfig/MapConfig, 3 SP) — gates AZ-375 + AZ-377.
+  - Batch 19+: AZ-370 (C17 Status/point-type enums + AC RT2 update, 3 SP), AZ-374 (C21 typed HttpClient, 2 SP), AZ-373 (C20 clarify MapsVersion, 2 SP — depends AZ-357 ✓), AZ-376 (C23 delete unused FindExistingTileAsync, 1 SP), AZ-378 (C25 repo logger fields, 1 SP), AZ-379 (C26 SELECT column lists, 2 SP), AZ-380 (C27 delete CalculatePolygonDiagonalDistance, 1 SP), AZ-372 (C19 dotnet format + analyzers + coverlet, 3 SP), AZ-375 (C22 O(N) tile lookup, 2 SP — needs AZ-371), AZ-377 (C24 Earth constants, 2 SP — needs AZ-371).
+- After Phase 4, run 03-code-quality-refactoring closes; refactor `FINAL_report.md` then auto-chains to autodev Step 9 (New Task) for Phase B.