fix(text): show selected formatting and style controls

Use category-filtered font and selected-item dropdowns, separate horizontal and vertical alignment, and reuse the border-color palette templates for text color. Persist vertical alignment additively. Follow the established static text-source pattern: https://obsproject.com/kb/text-sources

Services/LayoutStore.Save.cs

@@ -94,7 +94,7 @@ public partial class LayoutStore : IDisposable
                                     AlertVideoAssetId, AlertVideoPath, AlertUseDefaultVideo, AlertShowTicker, AlertVideoVolume,
                                     AlertDisplayMethod, IsBrandLogo, BlurAmount, AlertAudioPath, AlertAudioLoop,
                                     TextContent, TextFontFamily, TextFontSize, TextColor, TextBold, TextItalic,
-                                    TextUnderline, TextAlignment)
+                                    TextUnderline, TextAlignment, TextVerticalAlignment)
                 VALUES ($id, $sceneId, $assetId, $type, $name, $isEnabled,
                         $x, $y, $w, $h, $opacity, $monitor,
                         $clip, $mirrored, $isBackground, $captureKey, $showDesktop, $sort,
@@ -104,7 +104,7 @@ public partial class LayoutStore : IDisposable
                         $alertVideoAssetId, $alertVideoPath, $alertUseDefaultVideo, $alertShowTicker, $alertVideoVolume,
                         $alertDisplayMethod, $isBrandLogo, $blurAmount, $alertAudioPath, $alertAudioLoop,
                         $textContent, $textFontFamily, $textFontSize, $textColor, $textBold, $textItalic,
-                        $textUnderline, $textAlignment)
+                        $textUnderline, $textAlignment, $textVerticalAlignment)
                 """;
             cmd.Transaction = tx;
             var idP = cmd.Parameters.Add("$id", SqliteType.Text);
@@ -156,6 +156,7 @@ public partial class LayoutStore : IDisposable
             var textItalicP = cmd.Parameters.Add("$textItalic", SqliteType.Integer);
             var textUnderlineP = cmd.Parameters.Add("$textUnderline", SqliteType.Integer);
             var textAlignmentP = cmd.Parameters.Add("$textAlignment", SqliteType.Integer);
+            var textVerticalAlignmentP = cmd.Parameters.Add("$textVerticalAlignment", SqliteType.Integer);
 
             // Source and WebcamSceneConfig share ONE z-order space per scene:
             // each element gets its index within scene.Elements regardless of
@@ -216,6 +217,7 @@ public partial class LayoutStore : IDisposable
                     textItalicP.Value = source.TextItalic ? 1 : 0;
                     textUnderlineP.Value = source.TextUnderline ? 1 : 0;
                     textAlignmentP.Value = (int)source.TextAlignment;
+                    textVerticalAlignmentP.Value = (int)source.TextVerticalAlignment;
                     cmd.ExecuteNonQuery();
                 }
             }