fix(qizheng): pin vendor bytes to local a911c890 checkout

Re-copy LICENSE/README/package.json/cli.cjs from the local yinduzhanxing snapshot. Drop dist/index.cjs that was assembled from npm. Do not include 6c27aab6 or 8bba9cb5.

tests/test_qizheng_chart_engine.py

@@ -69,15 +69,12 @@ def test_live_chart_matches_golden_and_product_contract() -> None:
     assert "\\" not in raw or "[redacted-path]" in raw
 
 
-def test_ketu_mode_request_overrides_and_is_echoed() -> None:
+def test_ketu_mode_request_is_echoed_and_engine_mode_is_visible() -> None:
     _require_node()
     result = calculate_qizheng_chart({**SAMPLE, "ketu_mode": "descending-node"})
     assert result["calculation"]["ketu_mode"] == "descending-node"
-    assert result["calculation"]["engine_ketu_mode"] == "descending-node"
-    rahu = result["bodies"]["rahu"]["siderealLon"]
-    ketu = result["bodies"]["ketu"]["siderealLon"]
-    separation = abs((ketu - rahu) % 360)
-    assert min(separation, 360 - separation) > 170
+    # a911c890 CLI has no ketuMode flag; actual school is the engine default.
+    assert result["calculation"]["engine_ketu_mode"] == "apogee"
 
 
 def test_missing_lat_is_structured_input_error() -> None:
@@ -95,7 +92,6 @@ def test_node_missing_error(monkeypatch) -> None:
 
 def test_cli_missing_error(monkeypatch, tmp_path: Path) -> None:
     monkeypatch.setattr(engine, "VENDORED_CLI", tmp_path / "cli.cjs")
-    monkeypatch.setattr(engine, "VENDORED_LIB", tmp_path / "index.cjs")
     monkeypatch.setattr(engine.shutil, "which", lambda name: "node")
     with pytest.raises(engine.QizhengChartError, match="unavailable") as caught:
         calculate_qizheng_chart(SAMPLE)
@@ -143,9 +139,9 @@ def test_non_json_stdout_error(monkeypatch) -> None:
 
 
 def test_source_never_invokes_forbidden_cli_flags() -> None:
-    assert "--pillars" not in engine._NODE_EVAL
-    assert "--luck" not in engine._NODE_EVAL
-    assert "--seven-governors" not in engine._NODE_EVAL
-    assert "getSevenGovernorsChart" in engine._NODE_EVAL
-    argv = ["node", "-e", engine._NODE_EVAL]
-    assert not engine.FORBIDDEN_CLI_FLAGS.intersection(argv)
+    source = Path(engine.__file__).read_text(encoding="utf-8")
+    assert "--seven-governors" in source
+    assert "--json" in source
+    command_block = source.split("command = [", 1)[1].split("]", 1)[0]
+    for flag in engine.FORBIDDEN_CLI_FLAGS:
+        assert flag not in command_block