chore: Update version to 0.12.11, upgrade BlendJob wheel to 0.1.13, and enhance documentation for environment installation and model management

src/snapform/preferences.py

@@ -42,6 +42,13 @@ class SnapFormPreferences(bpy.types.AddonPreferences):
                 text="Install Environment",
                 icon="IMPORT",
             )
+            mirror_row = layout.row()
+            mirror_row.enabled = runtime.active_job is None
+            mirror_row.operator(
+                "snapform.install_environment_mirror",
+                text="Install Environment (Mirror)",
+                icon="IMPORT",
+            )
         layout.separator()
         layout.operator(
             "snapform.open_server_log",