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>

tests/models/test_preset.py

@@ -25,18 +25,20 @@ def test_preset():
     print("\nTesting update preset")
     update_data = {
         "name": "test_preset",
-        "pattern": "on",
+        "pattern": "colour_cycle",
         "colors": ["#FF0000", "#00FF00"],
         "delay": 100,
         "brightness": 127,
         "n1": 10,
-        "n2": 20
+        "n2": 20,
+        "mode": 1,
     }
     result = presets.update(preset_id, update_data)
     assert result is True
     updated = presets.read(preset_id)
     assert updated["name"] == "test_preset"
-    assert updated["pattern"] == "on"
+    assert updated["pattern"] == "colour_cycle"
+    assert updated["mode"] == 1
     assert updated["delay"] == 100
     
     print("\nTesting list presets")