Consolidate Odysseus agent harness and tool contracts

tests/test_preview_hides_import_action_static.py

@@ -0,0 +1,12 @@
+from pathlib import Path
+
+
+ROOT = Path(__file__).resolve().parents[1]
+
+
+def test_preview_hides_import_action_and_restores_it_for_empty_editor():
+    source = (ROOT / "static/js/document.js").read_text(encoding="utf-8")
+
+    assert "const emptyImport = document.getElementById('doc-rich-empty-import');" in source
+    assert "if (emptyImport) emptyImport.style.display = 'none';" in source
+    assert "_syncRichEmptyImport(richEmailBody);" in source