Introduce setting override tracking and update SettingContainer

src/cascadia/TerminalSettingsEditor/Resources/en-US/Resources.resw

@@ -830,7 +830,7 @@
   <data name="ColorScheme_SystemColorsHeader.Text" xml:space="preserve">
     <value>System colors</value>
   </data>
-  <data name="SettingContainer_OverrideMessageProtoExtension" xml:space="preserve">
+  <data name="SettingContainer_OverrideMessageFragmentExtension" xml:space="preserve">
     <value>Reset to value from: {}</value>
     <comment>{} is replaced by the name of another profile or generator.</comment>
   </data>

src/cascadia/TerminalSettingsEditor/SettingContainer.cpp

@@ -5,7 +5,6 @@
 #include "SettingContainer.h"
 #include "SettingContainer.g.cpp"
 #include "LibraryResources.h"
-#include "../TerminalSettingsModel/LegacyProfileGeneratorNamespaces.h"
 
 using namespace winrt::Windows::UI::Xaml;
 
@@ -189,19 +188,13 @@ namespace winrt::Microsoft::Terminal::Settings::Editor::implementation
         }
         else if (originTag == Model::OriginTag::Generated)
         {
-            const auto profileSource{ profile.Source() };
-            if (profileSource == WslGeneratorNamespace ||
-                profileSource == AzureGeneratorNamespace ||
-                profileSource == PowershellCoreGeneratorNamespace)
-            {
-                // from a dynamic profile generator
-                return {};
-            }
-            else
-            {
-                // proto-extensions
-                return hstring{ fmt::format(std::wstring_view(RS_(L"SettingContainer_OverrideMessageProtoExtension")), profileSource) };
-            }
+            // from a dynamic profile generator
+            return {};
+        }
+        else if (originTag == Model::OriginTag::Fragment)
+        {
+            // from a fragment extension
+            return hstring{ fmt::format(std::wstring_view(RS_(L"SettingContainer_OverrideMessageFragmentExtension")), profile.Source()) };
         }
         else
         {

src/cascadia/TerminalSettingsModel/CascadiaSettingsSerialization.cpp

@@ -597,7 +597,7 @@ void CascadiaSettings::_ParseAndLayerFragmentFiles(const std::unordered_set<std:
                         // (we add a new inheritance layer)
                         auto childImpl{ matchingProfile->CreateChild() };
                         childImpl->LayerJson(profileStub);
-                        childImpl->Origin(OriginTag::Generated);
+                        childImpl->Origin(OriginTag::Fragment);
                         childImpl->Source(source);
 
                         // replace parent in _profiles with child
@@ -615,7 +615,7 @@ void CascadiaSettings::_ParseAndLayerFragmentFiles(const std::unordered_set<std:
                         // We don't make modifications to the user's settings file yet, that will happen when
                         // _AppendDynamicProfilesToUserSettings() is called later
                         newProfile->Source(source);
-                        newProfile->Origin(OriginTag::Generated);
+                        newProfile->Origin(OriginTag::Fragment);
                         _allProfiles.Append(*newProfile);
                     }
                 }

src/cascadia/TerminalSettingsModel/Profile.idl

@@ -14,7 +14,8 @@ namespace Microsoft.Terminal.Settings.Model
     {
         Custom = 0,
         InBox,
-        Generated
+        Generated,
+        Fragment
     };
 
     enum CloseOnExitMode