Add determinism tests for verdict artifact generation and update SHA256 sums script

- Implemented comprehensive tests for verdict artifact generation to ensure deterministic outputs across various scenarios, including identical inputs, parallel execution, and change ordering.
- Created helper methods for generating sample verdict inputs and computing canonical hashes.
- Added tests to validate the stability of canonical hashes, proof spine ordering, and summary statistics.
- Introduced a new PowerShell script to update SHA256 sums for files, ensuring accurate hash generation and file integrity checks.

docs/testing/connector-fixture-discipline.md

@@ -387,10 +387,10 @@ LIVE_TESTS_ENABLED=true dotnet test --filter "Lane=Live" src/Concelier/__Tests/
 | KEV | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
 | EPSS | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
 | Distro.Alpine | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
-| Distro.Debian | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
-| Distro.RedHat | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
-| Distro.Suse | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
-| Distro.Ubuntu | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
+| Distro.Debian | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
+| Distro.RedHat | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
+| Distro.Suse | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
+| Distro.Ubuntu | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
 | Vndr.Adobe | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
 | Vndr.Apple | ⬜ | ⬜ | ⬜ | ⬜ | ⬜ |
 | Vndr.Cisco | ✅ | ✅ | ⬜ | ⬜ | ⬜ |
@@ -422,4 +422,4 @@ LIVE_TESTS_ENABLED=true dotnet test --filter "Lane=Live" src/Concelier/__Tests/
 
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-*Last updated: 2025-06-30 · Sprint 5100.0007.0005*
+*Last updated: 2025-12-24 · Sprint 5100.0007.0005*