Palette: show only kits declared in the app's schema

The sidebar palette combo now lists kits from the open file's schema
rather than every kit installed in Sedona home, with their resolved
version labels. Falls back to all installed kits when no file is open.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app_state.py

@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.
 import configparser
 import os
 
-VERSION = "0.0.0.060"
+VERSION = "0.0.0.061"
 PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")
 DEFAULT_GRID_SIZE = 10
 DEFAULT_ADD_TIMESTAMP = True