M6.13a: Show character sex in Aside lineage block

Sex is a character-level field set at Step 0 — surface it in the
right-rail summary alongside clade and species. Lands as a Sex row
under the lineage cells in both purebred (single Sex cell + filler)
and hybrid (Sex applies to the whole character, spans below the
sire/dam clade and species rows) layouts. Falls back to the empty
"—" placeholder when not yet picked.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Theriapolis.Godot/Scenes/Aside.cs

@@ -85,7 +85,14 @@ public partial class Aside : MarginContainer
 
     private void BuildDetailsGrid()
     {
-        if (_draft!.IsHybrid)
+        string sexLabel = _draft!.Sex switch
+        {
+            "male"   => "Male",
+            "female" => "Female",
+            _        => "",
+        };
+
+        if (_draft.IsHybrid)
         {
             // Hybrid layout: SIRE / DAM column headers above the parent
             // detail rows, then the Calling / Background row spans both
@@ -102,6 +109,10 @@ public partial class Aside : MarginContainer
             lineageGrid.AddChild(MakeCell("Clade",   CodexContent.Clade(_draft.DamCladeId)?.Name));
             lineageGrid.AddChild(MakeCell("Species", CodexContent.SpeciesById(_draft.SireSpeciesId)?.Name));
             lineageGrid.AddChild(MakeCell("Species", CodexContent.SpeciesById(_draft.DamSpeciesId)?.Name));
+            // Sex is a character-level field, not per-parent — span left
+            // column with an empty filler in the right.
+            lineageGrid.AddChild(MakeCell("Sex", sexLabel));
+            lineageGrid.AddChild(new Control());
         }
         else
         {
@@ -109,6 +120,8 @@ public partial class Aside : MarginContainer
             _content.AddChild(lineageGrid);
             lineageGrid.AddChild(MakeCell("Clade",   CodexContent.Clade(_draft.CladeId)?.Name));
             lineageGrid.AddChild(MakeCell("Species", CodexContent.SpeciesById(_draft.SpeciesId)?.Name));
+            lineageGrid.AddChild(MakeCell("Sex", sexLabel));
+            lineageGrid.AddChild(new Control());
         }
 
         // Calling + Background — last row of the lineage block, with