chore: commit sisyphus evidence and CI/CD artifacts

.sisyphus/evidence/task-5-missing-evidence-guard.txt

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+# Missing Evidence Guard
+
+This file confirms that every acceptance criterion and QA scenario from tasks T6-T12 has been mapped to at least one evidence artifact path in `.sisyphus/evidence/task-5-traceability-map.txt`.
+
+## Verification Checklist
+- [x] Task 6 ACs mapped: 2/2
+- [x] Task 6 Scenarios mapped: 2/2
+- [x] Task 7 ACs mapped: 3/3
+- [x] Task 7 Scenarios mapped: 2/2
+- [x] Task 8 ACs mapped: 2/2
+- [x] Task 8 Scenarios mapped: 2/2
+- [x] Task 9 ACs mapped: 2/2
+- [x] Task 9 Scenarios mapped: 2/2
+- [x] Task 10 ACs mapped: 3/3
+- [x] Task 10 Scenarios mapped: 2/2
+- [x] Task 11 ACs mapped: 3/3
+- [x] Task 11 Scenarios mapped: 2/2
+- [x] Task 12 ACs mapped: 3/3
+- [x] Task 12 Scenarios mapped: 2/2
+
+## Conclusion
+All criteria are accounted for. No gaps in traceability detected.