Initialer Import des AssetManagers

UPDATE-0.3.8.0.txt

@@ -0,0 +1,19 @@
+AssetManager 0.3.8.0 - Central field catalog and MeshCentral GUI configuration
+
+IMPORTANT:
+- Stable rollback version before this structural migration: 0.3.7.10
+- Create a PostgreSQL/database backup before first start.
+- Do not copy .env, config.json, data, uploads or logs from this ZIP.
+
+New database objects:
+- field_definitions
+- asset_field_values
+- mesh_field_mappings (prepared for future database-backed mappings)
+- category_fields.field_definition_id
+
+Design:
+- System fields remain physical columns in assets.
+- User-created fields are type-aware values in asset_field_values. No ALTER TABLE assets is needed.
+- Categories only control active/required/show-in-list/sort order.
+- Labels, descriptions, types and read-only properties are central.
+- MeshCentral connection, sync behavior, update rules and source-path mappings are editable in the web UI.