[AZ-284] Autodev baseline + testability refactor

Phase A baseline outputs from /autodev (Steps 1-5):
- Problem & solution docs (_docs/00_problem, _docs/01_solution)
- Codebase documentation (_docs/02_document) incl. architecture,
  module-layout, glossary, system-flows, baseline compliance scan
- Test specs (blackbox, performance, resilience, security, resource,
  traceability matrix)
- Test task decomposition (_docs/02_tasks/todo): AZ-285..AZ-290
- Testability refactor (_docs/04_refactoring/01-testability-refactoring):
  - TC-01 Move DownloadedTileInfoV2 + new ExistingTileInfo to Common.DTO
  - TC-02 Replace dead ISatelliteDownloader API with real signatures
  - TC-03 GoogleMapsDownloaderV2 implements ISatelliteDownloader
  - TC-04 TileService depends on ISatelliteDownloader (mockable)
  - TC-05 DI + endpoints use ISatelliteDownloader
- Test runner scripts (scripts/run-tests.sh, run-performance-tests.sh)
- Autodev state pointer (_docs/_autodev_state.md)

Prepares the codebase for AZ-285..AZ-290 unit/integration test work.

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

_docs/02_tasks/todo/AZ-289_integration_route_maps.md

@@ -0,0 +1,31 @@
+# Integration Tests: Route Map Processing + ZIP
+
+**Task**: AZ-289_integration_route_maps
+**Name**: Integration tests: route map processing + ZIP
+**Complexity**: 2 points
+**Dependencies**: AZ-285
+**Component**: Blackbox Tests
+**Tracker**: AZ-289
+**Epic**: AZ-284
+
+## Scenarios
+
+- BT-08: Route with requestMaps=true — verify mapsReady=true, stitchedImagePath, csvFilePath
+- BT-09: Route with createTilesZip=true — verify ZIP contents match CSV tile count, directory structure preserved
+
+## System Under Test Boundary
+
+Tests drive the API via HTTP endpoints. No internal module stubs — all services run in Docker as production.
+
+## Test Data
+
+Route points from test_coordinates.md (ROUTE-02, ROUTE-03)
+
+## Notes
+
+BT-10/11/12 are already covered by existing integration tests (ComplexRouteTests, ExtendedRouteTests).
+
+## Acceptance Criteria
+
+AC-1: Route map processing completes within 180s
+AC-2: ZIP file structure is validated (entry count matches CSV, path prefix "tiles/")