chore: housekeeping — linter & formatter setup

Add .prettierrc.json, .markdownlint.json, .yamllint.yaml, .gitattributes
Run CSharpier, Prettier and markdownlint across the entire codebase.
No logic changes — formatting, using order and line endings only.

HellionChat/Ui/SettingsTabs/ThemeAndLayout.cs

@@ -14,7 +14,8 @@ internal sealed class ThemeAndLayout : ISettingsTab
 
     private string? _applyDismissedFor;
 
-    public string Name => HellionStrings.Settings_Card_ThemeAndLayout_Title + "###tabs-themeandlayout";
+    public string Name =>
+        HellionStrings.Settings_Card_ThemeAndLayout_Title + "###tabs-themeandlayout";
 
     internal ThemeAndLayout(Plugin plugin, Configuration mutable)
     {
@@ -42,7 +43,8 @@ internal sealed class ThemeAndLayout : ISettingsTab
             var registry = Plugin.ThemeRegistry;
             var active = registry.Get(Mutable.Theme);
 
-            var activeLabelTemplate = HellionStrings.ResourceManager.GetString("Settings_Themes_Active") ?? "Active: {0}";
+            var activeLabelTemplate =
+                HellionStrings.ResourceManager.GetString("Settings_Themes_Active") ?? "Active: {0}";
             ImGui.TextUnformatted(string.Format(activeLabelTemplate, active.Name));
             using (ImRaii.PushColor(ImGuiCol.Text, 0xFF8FA3B5u))
                 ImGui.TextUnformatted(active.Author);
@@ -53,7 +55,9 @@ internal sealed class ThemeAndLayout : ISettingsTab
             ImGui.Separator();
             ImGui.Spacing();
 
-            var builtInsLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_BuiltIns") ?? "Built-in themes";
+            var builtInsLabel =
+                HellionStrings.ResourceManager.GetString("Settings_Themes_BuiltIns")
+                ?? "Built-in themes";
             ImGui.TextUnformatted(builtInsLabel);
             ImGui.Spacing();
             DrawThemeGrid(registry.AllBuiltIns(), active.Slug);
@@ -64,7 +68,9 @@ internal sealed class ThemeAndLayout : ISettingsTab
                 ImGui.Spacing();
                 ImGui.Separator();
                 ImGui.Spacing();
-                var customLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_Custom") ?? "Custom themes";
+                var customLabel =
+                    HellionStrings.ResourceManager.GetString("Settings_Themes_Custom")
+                    ?? "Custom themes";
                 ImGui.TextUnformatted(customLabel);
                 ImGui.Spacing();
                 DrawThemeGrid(customs, active.Slug);
@@ -74,7 +80,9 @@ internal sealed class ThemeAndLayout : ISettingsTab
             ImGui.Separator();
             ImGui.Spacing();
 
-            var openFolderLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_OpenFolder") ?? "Open themes folder";
+            var openFolderLabel =
+                HellionStrings.ResourceManager.GetString("Settings_Themes_OpenFolder")
+                ?? "Open themes folder";
             if (ImGui.Button(openFolderLabel))
             {
                 var dir = Path.Combine(Plugin.Interface.ConfigDirectory.FullName, "themes");
@@ -83,7 +91,9 @@ internal sealed class ThemeAndLayout : ISettingsTab
             }
 
             ImGui.SameLine();
-            var exportLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ExportActive") ?? "Export active...";
+            var exportLabel =
+                HellionStrings.ResourceManager.GetString("Settings_Themes_ExportActive")
+                ?? "Export active...";
             if (ImGui.Button(exportLabel))
             {
                 var dir = Path.Combine(Plugin.Interface.ConfigDirectory.FullName, "themes");
@@ -130,12 +140,26 @@ internal sealed class ThemeAndLayout : ISettingsTab
         if (isActive)
         {
             var border = ColourUtil.RgbaToAbgr(theme.Colors.Primary);
-            draw.AddRect(cursorBefore, cursorBefore + new Vector2(w, h), border, 4f, ImDrawFlags.None, 2f);
+            draw.AddRect(
+                cursorBefore,
+                cursorBefore + new Vector2(w, h),
+                border,
+                4f,
+                ImDrawFlags.None,
+                2f
+            );
         }
         else if (hovered)
         {
             var border = ColourUtil.RgbaToAbgr(theme.Colors.PrimaryLight & 0xFFFFFF99u);
-            draw.AddRect(cursorBefore, cursorBefore + new Vector2(w, h), border, 4f, ImDrawFlags.None, 1f);
+            draw.AddRect(
+                cursorBefore,
+                cursorBefore + new Vector2(w, h),
+                border,
+                4f,
+                ImDrawFlags.None,
+                1f
+            );
         }
 
         var mockupOrigin = cursorBefore + new Vector2(12f, 12f);
@@ -166,7 +190,8 @@ internal sealed class ThemeAndLayout : ISettingsTab
             return;
 
         var alreadyMatching = themeChatColors.Channels.All(kvp =>
-            Mutable.ChatColours.TryGetValue(kvp.Key, out var current) && current == kvp.Value);
+            Mutable.ChatColours.TryGetValue(kvp.Key, out var current) && current == kvp.Value
+        );
         if (alreadyMatching)
             return;
 
@@ -181,12 +206,15 @@ internal sealed class ThemeAndLayout : ISettingsTab
         draw.AddRectFilled(origin, origin + new Vector2(width, height), bgFill, 4f);
         draw.AddRect(origin, origin + new Vector2(width, height), border, 4f, ImDrawFlags.None, 1f);
 
-        var hint = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Hint")
-                   ?? "This theme suggests its own chat channel colours.";
-        var applyLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Apply")
-                         ?? "Apply";
-        var keepLabel = HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Keep")
-                        ?? "Keep current";
+        var hint =
+            HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Hint")
+            ?? "This theme suggests its own chat channel colours.";
+        var applyLabel =
+            HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Apply")
+            ?? "Apply";
+        var keepLabel =
+            HellionStrings.ResourceManager.GetString("Settings_Themes_ApplyChatColors_Keep")
+            ?? "Keep current";
 
         var textColor = ColourUtil.RgbaToAbgr(active.Colors.TextPrimary);
         draw.AddText(origin + new Vector2(12f, 10f), textColor, hint);
@@ -217,7 +245,9 @@ internal sealed class ThemeAndLayout : ISettingsTab
 
     private void DrawWindowStyleSection()
     {
-        using var tree = ImRaii.TreeNode(HellionStrings.Settings_ThemeAndLayout_WindowStyle_Heading);
+        using var tree = ImRaii.TreeNode(
+            HellionStrings.Settings_ThemeAndLayout_WindowStyle_Heading
+        );
         if (!tree.Success)
             return;
 
@@ -225,13 +255,18 @@ internal sealed class ThemeAndLayout : ISettingsTab
         {
             ImGui.Checkbox(Language.Options_ShowTitleBar_Name, ref Mutable.ShowTitleBar);
 
-            ImGui.Checkbox(Language.Options_ShowPopOutTitleBar_Name, ref Mutable.ShowPopOutTitleBar);
+            ImGui.Checkbox(
+                Language.Options_ShowPopOutTitleBar_Name,
+                ref Mutable.ShowPopOutTitleBar
+            );
 
             ImGui.Checkbox(Language.Options_ShowHideButton_Name, ref Mutable.ShowHideButton);
             ImGuiUtil.HelpMarker(Language.Options_ShowHideButton_Description);
 
             ImGui.Checkbox(Language.Options_SidebarTabView_Name, ref Mutable.SidebarTabView);
-            ImGuiUtil.HelpMarker(string.Format(Language.Options_SidebarTabView_Description, Plugin.PluginName));
+            ImGuiUtil.HelpMarker(
+                string.Format(Language.Options_SidebarTabView_Description, Plugin.PluginName)
+            );
 
             ImGui.Spacing();
             ImGui.Separator();
@@ -241,14 +276,17 @@ internal sealed class ThemeAndLayout : ISettingsTab
             // Untere Schwelle 50 % verhindert versehentliches Komplett-Wegblenden
             // des Chat-Hintergrunds (war v1.2.0 Bug bei WindowAlpha=0).
             var opacityPercent = Mutable.WindowOpacity * 100f;
-            if (ImGuiUtil.DragFloatVertical(
+            if (
+                ImGuiUtil.DragFloatVertical(
                     HellionStrings.Settings_ThemeAndLayout_WindowOpacity_Name,
                     ref opacityPercent,
                     .25f,
                     50f,
                     100f,
                     $"{opacityPercent:N0}%%",
-                    ImGuiSliderFlags.AlwaysClamp))
+                    ImGuiSliderFlags.AlwaysClamp
+                )
+            )
             {
                 Mutable.WindowOpacity = opacityPercent / 100f;
             }
@@ -258,24 +296,38 @@ internal sealed class ThemeAndLayout : ISettingsTab
 
     private void DrawTimestampStyleSection()
     {
-        using var tree = ImRaii.TreeNode(HellionStrings.Settings_ThemeAndLayout_TimestampStyle_Heading);
+        using var tree = ImRaii.TreeNode(
+            HellionStrings.Settings_ThemeAndLayout_TimestampStyle_Heading
+        );
         if (!tree.Success)
             return;
 
         using (ImRaii.PushIndent(ImGui.GetStyle().IndentSpacing, false))
         {
-            ImGui.Checkbox(Language.Options_PrettierTimestamps_Name, ref Mutable.PrettierTimestamps);
+            ImGui.Checkbox(
+                Language.Options_PrettierTimestamps_Name,
+                ref Mutable.PrettierTimestamps
+            );
             ImGuiUtil.HelpMarker(Language.Options_PrettierTimestamps_Description);
 
             if (Mutable.PrettierTimestamps)
             {
-                ImGui.Checkbox(Language.Options_MoreCompactPretty_Name, ref Mutable.MoreCompactPretty);
+                ImGui.Checkbox(
+                    Language.Options_MoreCompactPretty_Name,
+                    ref Mutable.MoreCompactPretty
+                );
                 ImGuiUtil.HelpMarker(Language.Options_MoreCompactPretty_Description);
 
-                ImGui.Checkbox(HellionStrings.Appearance_UseCompactDensity_Name, ref Mutable.UseCompactDensity);
+                ImGui.Checkbox(
+                    HellionStrings.Appearance_UseCompactDensity_Name,
+                    ref Mutable.UseCompactDensity
+                );
                 ImGuiUtil.HelpMarker(HellionStrings.Appearance_UseCompactDensity_Description);
 
-                ImGui.Checkbox(Language.Options_HideSameTimestamps_Name, ref Mutable.HideSameTimestamps);
+                ImGui.Checkbox(
+                    Language.Options_HideSameTimestamps_Name,
+                    ref Mutable.HideSameTimestamps
+                );
                 ImGuiUtil.HelpMarker(Language.Options_HideSameTimestamps_Description);
             }