## Summary
- add the Spec 295 artifacts for full-suite failure classification and CI lane baseline work
- fix `scripts/platform-test-artifacts` so Sail passes artifact staging inputs into the embedded PHP script via argv
- add a guard test covering the artifact staging input contract
## Scope guards
- no browser screenshot baselines included
- no generated test artifacts included
- no runtime application code changes included
## Notes
- classification evidence and follow-up ownership are documented in `specs/295-full-suite-ci-baseline/failure-classification.md`
- this PR is intentionally limited to the CI/lane/artifact contract slice for Spec 295
Co-authored-by: Ahmed Darrazi <ahmed.darrazi@live.de>
Reviewed-on: #350
ahmido
f03555eae1