refactor: migrate to kindred-addon-sdk for overlay, origin, and theme (#250)

Replace FreeCADGui.registerEditingOverlay() with kindred_sdk.register_overlay().
Replace FreeCADGui.addOrigin()/removeOrigin() with kindred_sdk wrappers.
Replace hardcoded _MOCHA dict with kindred_sdk.get_theme_tokens().
Add sdk dependency to package.xml <kindred> element.

freecad/InitGui.py

@@ -106,7 +106,9 @@ def _register_silo_overlay():
             return False
 
     try:
-        FreeCADGui.registerEditingOverlay(
+        from kindred_sdk import register_overlay
+
+        register_overlay(
             "silo",  # overlay id
             ["Silo Origin"],  # toolbar names to append
             _silo_overlay_match,  # match function

freecad/package.xml

@@ -18,6 +18,9 @@
         <min_create_version>0.1.0</min_create_version>
         <load_priority>60</load_priority>
         <pure_python>true</pure_python>
+        <dependencies>
+            <dependency>sdk</dependency>
+        </dependencies>
         <contexts>
             <context id="*" action="overlay"/>
         </contexts>

freecad/silo_origin.py

@@ -388,9 +388,7 @@ class SiloOrigin:
 
             # Upload to Silo
             properties = collect_document_properties(doc)
-            _client._upload_file(
-                obj.SiloPartNumber, str(file_path), properties, comment=""
-            )
+            _client._upload_file(obj.SiloPartNumber, str(file_path), properties, comment="")
 
             # Clear modified flag (Modified is on Gui.Document, not App.Document)
             gui_doc = FreeCADGui.getDocument(doc.Name)
@@ -567,12 +565,9 @@ def register_silo_origin():
     This should be called during workbench initialization to make
     Silo available as a file origin.
     """
-    origin = get_silo_origin()
-    try:
-        FreeCADGui.addOrigin(origin)
-        FreeCAD.Console.PrintLog("Registered Silo origin\n")
-    except Exception as e:
-        FreeCAD.Console.PrintWarning(f"Could not register Silo origin: {e}\n")
+    from kindred_sdk import register_origin
+
+    register_origin(get_silo_origin())
 
 
 def unregister_silo_origin():
@@ -582,9 +577,7 @@ def unregister_silo_origin():
     """
     global _silo_origin
     if _silo_origin:
-        try:
-            FreeCADGui.removeOrigin(_silo_origin)
-            FreeCAD.Console.PrintLog("Unregistered Silo origin\n")
-        except Exception as e:
-            FreeCAD.Console.PrintWarning(f"Could not unregister Silo origin: {e}\n")
+        from kindred_sdk import unregister_origin
+
+        unregister_origin(_silo_origin)
         _silo_origin = None

freecad/silo_start.py

@@ -19,23 +19,10 @@ from PySide import QtCore, QtGui, QtWidgets
 # ---------------------------------------------------------------------------
 # Catppuccin Mocha palette
 # ---------------------------------------------------------------------------
-_MOCHA = {
-    "base": "#1e1e2e",
-    "mantle": "#181825",
-    "crust": "#11111b",
-    "surface0": "#313244",
-    "surface1": "#45475a",
-    "surface2": "#585b70",
-    "text": "#cdd6f4",
-    "subtext0": "#a6adc8",
-    "subtext1": "#bac2de",
-    "blue": "#89b4fa",
-    "green": "#a6e3a1",
-    "red": "#f38ba8",
-    "peach": "#fab387",
-    "lavender": "#b4befe",
-    "overlay0": "#6c7086",
-}
+# Catppuccin Mocha palette — sourced from kindred-addon-sdk
+from kindred_sdk.theme import get_theme_tokens
+
+_MOCHA = get_theme_tokens()
 
 _PREF_GROUP = "User parameter:BaseApp/Preferences/Mod/KindredSilo"