coverage: drop the rendered report section

The ledger stays a machine-written artifact (coverage.json and the SARIF
non-failing results); the executive report goes back to being the agent's
document.

tests/test_report_coverage.py

@@ -9,7 +9,6 @@ from strix.report.coverage import (
     _SKILL_PHRASINGS,
     build_coverage_document,
     read_agent_graph,
-    render_coverage_markdown,
     write_coverage,
 )
 from strix.skills import get_available_skills
@@ -171,27 +170,6 @@ def test_write_coverage_emits_a_top_level_artifact(tmp_path: Path) -> None:
     assert json.loads(path.read_text(encoding="utf-8"))["schema_version"] == 1
 
 
-def test_markdown_renders_a_surface_table() -> None:
-    markdown = render_coverage_markdown(_document())
-
-    assert "# Coverage" in markdown
-    assert "| POST /api/orders/{id} | object-level authorization | No issue identified |" in (
-        markdown
-    )
-
-
-def test_markdown_says_so_when_nothing_was_recorded() -> None:
-    markdown = render_coverage_markdown(_document(entries=[], agent_graph={}))
-
-    assert "cannot be read as evidence" in markdown
-
-
-def test_markdown_cell_escapes_pipes() -> None:
-    markdown = render_coverage_markdown(_document(entries=[_entry(surface="a|b")]))
-
-    assert "| a\\|b |" in markdown
-
-
 def test_read_agent_graph_tolerates_a_missing_or_corrupt_snapshot(tmp_path: Path) -> None:
     assert read_agent_graph(tmp_path) == {}
 

tests/test_report_writer.py

@@ -206,11 +206,3 @@ def test_render_vulnerability_md_surfaces_calibration_metadata() -> None:
     assert "## Confidence Rationale" in md
     assert "## What Would Change This Severity" in md
     assert "## Fix Verification" in md
-
-
-def test_write_executive_report_appends_the_coverage_section(tmp_path: Path) -> None:
-    write_executive_report(tmp_path, "Scan complete.", "# Coverage\n\nNothing tested.\n")
-    content = (tmp_path / "penetration_test_report.md").read_text(encoding="utf-8")
-
-    assert content.index("Scan complete.") < content.index("# Coverage")
-    assert "Nothing tested." in content

tests/test_state_coverage_artifact.py

@@ -45,17 +45,6 @@ def test_coverage_is_written_beside_the_other_artifacts(state: ReportState) -> N
     assert document["summary"]["surfaces_reviewed"] == 1
 
 
-def test_report_carries_a_coverage_section_from_the_ledger(state: ReportState) -> None:
-    _record_a_cleared_surface()
-    state.final_scan_result = "Scan complete."
-
-    state._save_artifacts()
-
-    report = (state.get_run_dir() / "penetration_test_report.md").read_text(encoding="utf-8")
-    assert "# Coverage" in report
-    assert "POST /api/orders/{id}" in report
-
-
 def test_cleared_surfaces_reach_sarif(state: ReportState) -> None:
     _record_a_cleared_surface()