add tests

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solution.md updated

docs/03_tests/48_long_flight_3000_images_spec.md

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+# Cross-Cutting Acceptance Test: Long Flight Maximum Scale
+
+## Summary
+Validate system scalability with maximum expected flight length of 3000 images.
+
+## Test Description
+Process extended flight with 3000 images (simulated or actual) to validate system can handle maximum scale per requirements.
+
+## Test Steps
+1. Create flight with 3000 images
+2. Process through complete pipeline
+3. Monitor memory usage, processing time, accuracy
+4. Verify no degradation over time
+
+## Success Criteria
+- All 3000 images processed
+- Total time < 15,000 seconds (5s/image)
+- Accuracy maintained throughout (AC-1, AC-2)
+- Memory usage stable (no leaks)
+- Registration rate > 95% (AC-9)
+
+## Pass/Fail
+**Passes**: System handles 3000 images without failure
+**Fails**: Memory exhaustion, crashes, significant performance degradation
+