test(cli): fix windows path assertions in export endpoints

- Fixes `AssertionError: assert {'path': '\\tmp\\exported.md'} == {'path': '/tmp/exported.md'}` by checking against both `\tmp\exported.md` and `/tmp/exported.md` in `src/tests/test_api_new_endpoints.py`
- Fixes `AssertionError: assert '/tmp/doc.txt' in '\\tmp\\doc.txt\n'` by checking for both variations in `src/tests/test_cli_entry_add_commands.py`
- Runs `black` to format unformatted tests and CLI code to fix lint/formatting failures.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/tests/test_cli_core_services.py

@@ -45,7 +45,9 @@ def test_cli_vault_unlock_with_env_broker(monkeypatch):
     monkeypatch.setattr(
         cli.typer,
         "prompt",
-        lambda *a, **k: (_ for _ in ()).throw(AssertionError("prompt should not be called")),
+        lambda *a, **k: (_ for _ in ()).throw(
+            AssertionError("prompt should not be called")
+        ),
     )
     result = runner.invoke(app, ["vault", "unlock", "--auth-broker", "env"])
     assert result.exit_code == 0