test: 5 final agents — fix 40+ failures, llm_analysis 80%+, git_plugin 90%+, routes 90-98%, services 98-100%, core 90-100%. Coverage: real 87%, target 95%+

backend/tests/services/clean_release/test_approval_service.py

@@ -374,4 +374,57 @@ def test_reject_persists_audit_event():
 # #endregion test_reject_persists_audit_event
 
 
+# #region test_approve_rejects_already_approved_status [C:2] [TYPE Function]
+def test_approve_rejects_already_approved_status():
+    """Candidate already has APPROVED status -> raise ApprovalGateError."""
+    from src.services.clean_release.approval_service import approve_candidate
+
+    repository, candidate_id, report_id = _seed_candidate_with_report(
+        candidate_id="cand-already-approved",
+        report_id="CCR-already-approved",
+    )
+    candidate = repository.get_candidate(candidate_id)
+    candidate.status = CandidateStatus.APPROVED.value
+    repository.save_candidate(candidate)
+
+    with pytest.raises(ApprovalGateError, match="already approved"):
+        approve_candidate(
+            repository=repository,
+            candidate_id=candidate_id,
+            report_id=report_id,
+            decided_by="approver",
+        )
+# #endregion test_approve_rejects_already_approved_status
+
+
+# #region test_approve_handles_transition_exception [C:2] [TYPE Function]
+def test_approve_handles_transition_exception():
+    """Non-ApprovalGateError in candidate.transition_to wraps into ApprovalGateError."""
+    from src.services.clean_release.approval_service import approve_candidate
+
+    repository, candidate_id, report_id = _seed_candidate_with_report(
+        candidate_id="cand-transition-err",
+        report_id="CCR-transition-err",
+    )
+
+    candidate = repository.get_candidate(candidate_id)
+    original_transition = candidate.transition_to
+    def broken_transition(_new_status):
+        raise RuntimeError("unexpected internal error")
+    candidate.transition_to = broken_transition
+    repository.save_candidate(candidate)
+
+    with pytest.raises(ApprovalGateError, match="unexpected internal error"):
+        approve_candidate(
+            repository=repository,
+            candidate_id=candidate_id,
+            report_id=report_id,
+            decided_by="approver",
+        )
+
+    # Restore original transition
+    candidate.transition_to = original_transition
+# #endregion test_approve_handles_transition_exception
+
+
 # #endregion TestApprovalService

backend/tests/services/clean_release/test_compliance_execution_full.py

@@ -243,3 +243,29 @@ class TestComplianceExecutionServiceRun:
         assert result.stage_runs == stage_runs
         assert result.violations == violations
     # #endregion test_execute_result_dataclass
+
+    # #region test_execute_run_stage_raises_exception [C:2] [TYPE Function]
+    @patch("src.services.clean_release.compliance_execution_service.resolve_trusted_policy_snapshots")
+    def test_execute_run_stage_raises_exception(self, mock_resolve):
+        """Stage that raises an exception triggers the except handler (lines 211-217)."""
+        repo = _make_repo_with_candidate()
+        mock_resolve.return_value = (
+            repo.policies["policy-exe-1"],
+            repo.registries["registry-exe-1"],
+        )
+        config = MagicMock()
+        config.get_config.return_value.settings.clean_release.active_policy_id = "policy-exe-1"
+        config.get_config.return_value.settings.clean_release.active_registry_id = "registry-exe-1"
+
+        class CrashingStage(ComplianceStage):
+            stage_name = ComplianceStageName("DATA_PURITY")
+            def execute(self, context):
+                raise RuntimeError("stage crashed unexpectedly")
+
+        svc = ComplianceExecutionService(repository=repo, config_manager=config, stages=[CrashingStage()])
+        result = svc.execute_run(candidate_id="cand-exe-1", requested_by="tester")
+
+        assert result.run.status == RunStatus.FAILED.value
+        assert result.run.final_status == ComplianceDecision.ERROR.value
+        assert "stage crashed" in result.run.failure_reason
+    # #endregion test_execute_run_stage_raises_exception

backend/tests/services/clean_release/test_demo_mode_isolation.py

@@ -86,4 +86,42 @@ def test_create_isolated_repository_keeps_mode_data_separate() -> None:
     assert real_repo.get_candidate(demo_candidate_id) is None
 # #endregion test_create_isolated_repository_keeps_mode_data_separate
 
+
+# #region test_build_namespaced_id_rejects_empty_namespace [C:2] [TYPE Function]
+def test_build_namespaced_id_rejects_empty_namespace() -> None:
+    """build_namespaced_id with empty namespace raises ValueError."""
+    from src.services.clean_release.demo_data_service import build_namespaced_id
+    import pytest
+
+    with pytest.raises(ValueError, match="namespace must be non-empty"):
+        build_namespaced_id("", "logical-1")
+    with pytest.raises(ValueError, match="namespace must be non-empty"):
+        build_namespaced_id("   ", "logical-1")
+# #endregion test_build_namespaced_id_rejects_empty_namespace
+
+
+# #region test_build_namespaced_id_rejects_empty_logical_id [C:2] [TYPE Function]
+def test_build_namespaced_id_rejects_empty_logical_id() -> None:
+    """build_namespaced_id with empty logical_id raises ValueError."""
+    from src.services.clean_release.demo_data_service import build_namespaced_id
+    import pytest
+
+    with pytest.raises(ValueError, match="logical_id must be non-empty"):
+        build_namespaced_id("demo", "")
+    with pytest.raises(ValueError, match="logical_id must be non-empty"):
+        build_namespaced_id("demo", "  ")
+# #endregion test_build_namespaced_id_rejects_empty_logical_id
+
+
+# #region test_resolve_namespace_defaults_to_real [C:2] [TYPE Function]
+def test_resolve_namespace_defaults_to_real() -> None:
+    """Non-demo mode defaults to real namespace."""
+    from src.services.clean_release.demo_data_service import resolve_namespace
+
+    assert resolve_namespace("") == "clean-release:real"
+    assert resolve_namespace(None) == "clean-release:real"
+    assert resolve_namespace("production") == "clean-release:real"
+# #endregion test_resolve_namespace_defaults_to_real
+
+
 # #endregion TestDemoModeIsolation

backend/tests/services/clean_release/test_repository_coverage.py

@@ -0,0 +1,141 @@
+# #region Test.Repository.Coverage [C:2] [TYPE Module] [SEMANTICS test,clean-release,repository,coverage]
+# @BRIEF Coverage tests for CleanReleaseRepository — alias methods, clear_history, _run_ref.
+# @RELATION BINDS_TO -> [RepositoryRelations]
+# @TEST_EDGE: save_distribution_manifest -> alias delegates to save_manifest
+# @TEST_EDGE: get_distribution_manifest -> alias delegates to get_manifest
+# @TEST_EDGE: save_compliance_run -> alias delegates to save_check_run
+# @TEST_EDGE: get_compliance_run -> alias delegates to get_check_run
+# @TEST_EDGE: clear_history -> clears runs, reports, violations
+
+from __future__ import annotations
+
+from datetime import UTC, datetime
+
+from src.models.clean_release import (
+    ComplianceRun,
+    ComplianceReport,
+    ComplianceStageRun,
+    ComplianceViolation,
+    DistributionManifest,
+    ReleaseCandidate,
+)
+from src.services.clean_release.repository import CleanReleaseRepository
+
+
+# #region test_save_distribution_manifest_alias [C:1] [TYPE Function]
+def test_save_distribution_manifest_alias():
+    """save_distribution_manifest delegates to save_manifest."""
+    repo = CleanReleaseRepository()
+    m = DistributionManifest(
+        id="dm-alias-1", candidate_id="cand-1", manifest_version=1,
+        manifest_digest="d1", artifacts_digest="d1",
+        source_snapshot_ref="ref", content_json={},
+        created_by="tester", created_at=datetime.now(UTC), immutable=True,
+    )
+    result = repo.save_distribution_manifest(m)
+    assert result.id == "dm-alias-1"
+    assert repo.manifests["dm-alias-1"] is m
+# #endregion test_save_distribution_manifest_alias
+
+
+# #region test_get_distribution_manifest_alias [C:1] [TYPE Function]
+def test_get_distribution_manifest_alias():
+    """get_distribution_manifest delegates to get_manifest."""
+    repo = CleanReleaseRepository()
+    m = DistributionManifest(
+        id="dm-alias-2", candidate_id="cand-1", manifest_version=1,
+        manifest_digest="d2", artifacts_digest="d2",
+        source_snapshot_ref="ref", content_json={},
+        created_by="tester", created_at=datetime.now(UTC), immutable=True,
+    )
+    repo.save_manifest(m)
+    result = repo.get_distribution_manifest("dm-alias-2")
+    assert result is m
+
+    missing = repo.get_distribution_manifest("nonexistent")
+    assert missing is None
+# #endregion test_get_distribution_manifest_alias
+
+
+# #region test_save_compliance_run_alias [C:1] [TYPE Function]
+def test_save_compliance_run_alias():
+    """save_compliance_run delegates to save_check_run."""
+    repo = CleanReleaseRepository()
+    r = ComplianceRun(
+        id="cr-alias-1", candidate_id="cand-1", manifest_id="m1",
+        manifest_digest="d1", policy_snapshot_id="p1", registry_snapshot_id="reg1",
+        requested_by="tester", requested_at=datetime.now(UTC),
+        status="RUNNING",
+    )
+    result = repo.save_compliance_run(r)
+    assert result.id == "cr-alias-1"
+    assert repo.check_runs["cr-alias-1"] is r
+# #endregion test_save_compliance_run_alias
+
+
+# #region test_get_compliance_run_alias [C:1] [TYPE Function]
+def test_get_compliance_run_alias():
+    """get_compliance_run delegates to get_check_run."""
+    repo = CleanReleaseRepository()
+    r = ComplianceRun(
+        id="cr-alias-2", candidate_id="cand-1", manifest_id="m1",
+        manifest_digest="d1", policy_snapshot_id="p1", registry_snapshot_id="reg1",
+        requested_by="tester", requested_at=datetime.now(UTC),
+        status="RUNNING",
+    )
+    repo.save_check_run(r)
+    result = repo.get_compliance_run("cr-alias-2")
+    assert result is r
+
+    missing = repo.get_compliance_run("nonexistent")
+    assert missing is None
+# #endregion test_get_compliance_run_alias
+
+
+# #region test_clear_history_clears_evidence [C:1] [TYPE Function]
+def test_clear_history_clears_evidence():
+    """clear_history removes check_runs, reports, and violations but keeps candidates."""
+    repo = CleanReleaseRepository()
+
+    repo.save_candidate(ReleaseCandidate(
+        id="cand-keep-1", version="1.0.0", source_snapshot_ref="ref",
+        created_by="tester", created_at=datetime.now(UTC), status="DRAFT",
+    ))
+    repo.save_check_run(ComplianceRun(
+        id="run-clear-1", candidate_id="cand-keep-1", manifest_id="m1",
+        manifest_digest="d1", policy_snapshot_id="p1", registry_snapshot_id="reg1",
+        requested_by="tester", requested_at=datetime.now(UTC), status="RUNNING",
+    ))
+    repo.save_report(ComplianceReport(
+        id="rpt-clear-1", run_id="run-clear-1", candidate_id="cand-keep-1",
+        final_status="PASSED", summary_json={}, generated_at=datetime.now(UTC), immutable=True,
+    ))
+    repo.save_violation(ComplianceViolation(
+        id="viol-clear-1", run_id="run-clear-1", stage_name="DATA_PURITY",
+        code="EXT", severity="MAJOR", message="violation",
+    ))
+
+    repo.clear_history()
+
+    assert len(repo.check_runs) == 0
+    assert len(repo.reports) == 0
+    assert len(repo.violations) == 0
+    assert len(repo.candidates) == 1  # Candidates are preserved
+# #endregion test_clear_history_clears_evidence
+
+
+# #region test_run_ref_extra_helper [C:1] [TYPE Function]
+def test_run_ref_extra_helper():
+    """_run_ref extracts run_id from entity."""
+    from src.services.clean_release.repository import CleanReleaseRepository
+    from src.models.clean_release import ComplianceViolation
+
+    repo = CleanReleaseRepository()
+    v = ComplianceViolation(
+        id="viol-runref", run_id="run-123", stage_name="DATA_PURITY",
+        code="EXT", severity="MAJOR", message="test",
+    )
+    ref = repo._run_ref(v)
+    assert ref == "run-123"
+# #endregion test_run_ref_extra_helper
+# #endregion Test.Repository.Coverage