[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>

scripts/run-tests.sh

@@ -0,0 +1,39 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
+
+cleanup() {
+    docker compose -f "$PROJECT_ROOT/docker-compose.yml" -f "$PROJECT_ROOT/docker-compose.tests.yml" down --remove-orphans 2>/dev/null || true
+}
+trap cleanup EXIT
+
+echo "=== Satellite Provider Test Suite ==="
+echo ""
+
+if [[ "${1:-}" == "--unit-only" ]]; then
+    echo "Running unit tests only..."
+    docker run --rm -v "$PROJECT_ROOT:/src" -w /src mcr.microsoft.com/dotnet/sdk:8.0 \
+        dotnet test SatelliteProvider.Tests/SatelliteProvider.Tests.csproj \
+        --no-restore --configuration Release \
+        --logger "console;verbosity=normal"
+    echo ""
+    echo "=== Unit tests complete ==="
+    exit 0
+fi
+
+echo "Running full test suite (unit + integration)..."
+echo ""
+
+echo "Step 1: Unit tests"
+docker run --rm -v "$PROJECT_ROOT:/src" -w /src mcr.microsoft.com/dotnet/sdk:8.0 \
+    sh -c "dotnet restore SatelliteProvider.sln && dotnet test SatelliteProvider.Tests/SatelliteProvider.Tests.csproj --no-restore --configuration Release --logger 'console;verbosity=normal'"
+
+echo ""
+echo "Step 2: Integration tests (Docker Compose)"
+docker compose -f "$PROJECT_ROOT/docker-compose.yml" -f "$PROJECT_ROOT/docker-compose.tests.yml" \
+    up --build --abort-on-container-exit --exit-code-from integration-tests
+
+echo ""
+echo "=== All tests passed ==="