Fix the five resilience review findings

internal/framework/runner/runner_test.go

@@ -1280,3 +1280,20 @@ func TestRunnerGlossaryModuleUsesConfidenceThreshold(t *testing.T) {
 		t.Fatalf("expected low confidence reason, got %+v", out.ModuleResults[0].ValidatorRejected[0])
 	}
 }
+
+func TestFatalPartialDecisionsRejectUnknownAndDuplicateIdentity(t *testing.T) {
+	origin := errors.New("original fatal failure")
+	candidate := proposals.EnrichedCorrectionProposal{ProposalMetadata: proposals.ProposalMetadata{ProposalIndex: 7}}
+	for _, decisions := range [][]validators.Decision{
+		{{ProposalIndex: 8, Approved: true}},
+		{{ProposalIndex: 7, Approved: true}, {ProposalIndex: 7, Approved: true}},
+	} {
+		v := fakeValidator{name: "broken", validateF: func(contracts.ValidationRequest) (validators.Result, error) {
+			return validators.Result{Decisions: decisions}, origin
+		}}
+		result, err := validateSectionCandidates(context.Background(), validateSectionCandidatesInput{Validators: []contracts.Validator{v}, SectionEnriched: []proposals.EnrichedCorrectionProposal{candidate}})
+		if !errors.Is(err, origin) || len(result.decisions) != 0 || len(result.approved) != 0 {
+			t.Fatalf("invalid partial evidence accepted or origin lost: %+v %v", result, err)
+		}
+	}
+}