refactor(services): route logging through IPluginLogProxy

F12.2 step 5b — service cluster (~42 sites in 16 files):
MessageManager, GameFunctions/{Chat, GameFunctions, KeybindManager},
EmoteCache, PayloadHandler, AutoTellTabsService, FontManager, Commands,
Util/{WrapperUtil, AutoTranslate, MemoryUtil}, Message, Themes/ThemeRegistry,
Ipc/ExtraChat, Configuration.

The proxy interface gained Dalamud's params-overload signature
(messageTemplate + params object[]) to cover Configuration.cs:86 which
relies on Serilog-style placeholders.

Verified: zero remaining Plugin.Log.X(...) call-sites in HellionChat/,
build green, build-suite 690/690.

HellionChat/Message.cs

@@ -153,8 +153,8 @@ public partial class Message
             }
             catch (ArgumentException ex)
             {
-                Plugin.Log.Error(ex, "Failed to parse extra chat channel GUID");
-                Plugin.Log.Error($"Byte Array: ${string.Join(", ", data[4..^1])}");
+                Plugin.LogProxy.Error(ex, "Failed to parse extra chat channel GUID");
+                Plugin.LogProxy.Error($"Byte Array: ${string.Join(", ", data[4..^1])}");
                 return Guid.Empty;
             }
         }
@@ -251,7 +251,7 @@ public partial class Message
                         AddChunkWithMessage(
                             text.NewWithStyle(chunk.Source, chunk.Link, token.Value)
                         );
-                        Plugin.Log.Debug(
+                        Plugin.LogProxy.Debug(
                             $"Invalid URL accepted by Regex but failed URI parsing: '{token.Value}'"
                         );
                     }
@@ -416,7 +416,7 @@ public partial class Message
                 catch (Exception)
                 {
                     AddChunkWithMessage(text.NewWithStyle(chunk.Source, chunk.Link, split));
-                    Plugin.Log.Debug($"Failed to parse the text param: '{split}'");
+                    Plugin.LogProxy.Debug($"Failed to parse the text param: '{split}'");
                 }
             }
         }