Правки и улучшения визуала. Добавил функционал отметок.

dbapp/mainapp/admin.py

@@ -24,6 +24,7 @@ from .models import (
     Modulation,
     Standard,
     SigmaParMark,
+    ObjectMark,
     SigmaParameter,
     Parameter,
     Satellite,
@@ -339,6 +340,23 @@ class ParameterInline(admin.StackedInline):
 # ============================================================================
 
 
+@admin.register(ObjectMark)
+class ObjectMarkAdmin(BaseAdmin):
+    """Админ-панель для модели ObjectMark."""
+
+    list_display = ("source", "mark", "timestamp", "created_by")
+    list_select_related = ("source", "created_by__user")
+    search_fields = ("source__id",)
+    ordering = ("-timestamp",)
+    list_filter = (
+        "mark",
+        ("timestamp", DateRangeQuickSelectListFilterBuilder()),
+        ("source", MultiSelectRelatedDropdownFilter),
+    )
+    readonly_fields = ("timestamp", "created_by")
+    autocomplete_fields = ("source",)
+
+
 @admin.register(SigmaParMark)
 class SigmaParMarkAdmin(BaseAdmin):
     """Админ-панель для модели SigmaParMark."""
@@ -1023,6 +1041,7 @@ class SourceAdmin(ImportExportActionModelAdmin, LeafletGeoAdmin, BaseAdmin):
         ("created_at", DateRangeQuickSelectListFilterBuilder()),
         ("updated_at", DateRangeQuickSelectListFilterBuilder()),
     )
+    search_fields = ("id",)
     ordering = ("-created_at",)
     readonly_fields = ("created_at", "created_by", "updated_at", "updated_by")
     inlines = [ObjItemInline]