feat(ui): pattern modes, bundles, and zone content kind

Add profile/preset/sequence JSON import and export; map preset mode to
wire n6 with a mode dropdown for multi-mode patterns; zone edit shows
presets or sequences only with content_kind on save; update catalogue
and tests for merged pattern names.

Co-authored-by: Cursor <cursoragent@cursor.com>

pyproject.toml

@@ -1,3 +1,5 @@
 [tool.pytest.ini_options]
 testpaths = ["tests"]
-python_files = ["test_endpoints_pytest.py"]
+python_files = ["test_*.py"]
+# ``tests/models/`` is a package name clash with ``src/models``; run via tests/models/run_all.py
+norecursedirs = ["models"]