M6.7: Parchment theme pass

Lights up the M5 codex design system across the wizard. Default
palette swaps from dark leather to aged-parchment cream with
sealing-wax red selection emphasis, matching the React prototype's
default theme variant. CodexTheme.Build() is applied at the wizard
root so every step + Aside + popover cascades through it.

Theme additions:
- Parchment palette in CodexPalette (Dark retained as alt)
- Type variations registered for Card, CodexPopover, Pill,
  PillDetriment, AbilityToken, AbilitySlot, SkillRow — without
  SetTypeVariation, panel-stylebox lookup falls through to Godot's
  default dark slate, which is what was happening to every bare
  PanelContainer before this pass.
- panel_hover stylebox on Card (gild border) wired via CodexCard's
  MouseEntered/Exited helper; panel_selected bumped to 3px seal-red
  border + soft shadow so selection reads at a glance.

Card selection refactor:
- Replaced the warm-cream Modulate hint on cards with stylebox swaps
  via the new CodexCard.SetSelected helper. The Modulate approach
  was a no-op on cream-on-cream parchment; the stylebox swap looks
  the same on either palette.
- Step intros + Aside section headers now use the existing Eyebrow /
  H2 / H3 / CardName / CardMeta / CardBody label variations.
- Confirm button on Step VIII uses the PrimaryButton variation.

Popover + chip behaviour:
- PopoverLayer is now MouseFilter=Ignore so clicks/scroll/hover all
  pass through. Adjacent chips fire reliably even when the previous
  popover overlaps them spatially.
- Dropped the 80ms grace timer; chip MouseExited closes immediately.
- TraitChip MouseFilter Stop → Pass so clicks bubble up to the
  parent card's GuiInput (selecting the card).

Misc:
- Wizard._Ready inserts a backing Panel so the parchment Bg fills
  the canvas — Wizard root is a plain Control, which paints nothing.
- CodexTheme font lookup tries Cormorant-Medium before -Regular and
  globalizes res://Fonts/ for runtime FontFile load (the previous
  fallback used ContentPaths which points at a sibling data tree).
- StepStats final-score Label rendered at font_size 22 to match the
  AbilityToken die.

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

Theriapolis.Godot/Scenes/Steps/StepSkills.cs

@@ -41,8 +41,8 @@ public partial class StepSkills : VBoxContainer, IStep
         var intro = new VBoxContainer();
         intro.AddThemeConstantOverride("separation", 6);
         AddChild(intro);
-        intro.AddChild(new Label { Text = "FOLIO VII · SKILLS" });
-        intro.AddChild(new Label { Text = "Choose Your Skills" });
+        intro.AddChild(new Label { Text = "FOLIO VII · SKILLS", ThemeTypeVariation = "Eyebrow" });
+        intro.AddChild(new Label { Text = "Choose Your Skills", ThemeTypeVariation = "H2" });
         intro.AddChild(new Label
         {
             Text = "Your background grants two skills automatically (sealed). From your "
@@ -51,7 +51,7 @@ public partial class StepSkills : VBoxContainer, IStep
             AutowrapMode = TextServer.AutowrapMode.WordSmart,
         });
 
-        _countLabel = new Label { Text = "0 / 0 chosen" };
+        _countLabel = new Label { Text = "0 / 0 chosen", ThemeTypeVariation = "Meta" };
         AddChild(_countLabel);
 
         _groupsGrid = new GridContainer
@@ -96,7 +96,11 @@ public partial class StepSkills : VBoxContainer, IStep
                                        HashSet<string> chosen,
                                        int required)
     {
-        var panel = new PanelContainer { SizeFlagsHorizontal = SizeFlags.ExpandFill };
+        var panel = new PanelContainer
+        {
+            SizeFlagsHorizontal = SizeFlags.ExpandFill,
+            ThemeTypeVariation = "Card",
+        };
         var col = new VBoxContainer();
         col.AddThemeConstantOverride("separation", 4);
         panel.AddChild(col);
@@ -105,10 +109,10 @@ public partial class StepSkills : VBoxContainer, IStep
         var header = new HBoxContainer();
         header.AddThemeConstantOverride("separation", 8);
         col.AddChild(header);
-        header.AddChild(new Label { Text = SkillsCatalog.AbilityFullName[ability] });
+        header.AddChild(new Label { Text = SkillsCatalog.AbilityFullName[ability], ThemeTypeVariation = "H3" });
         var spacer = new Control { SizeFlagsHorizontal = SizeFlags.ExpandFill };
         header.AddChild(spacer);
-        header.AddChild(new Label { Text = ability });
+        header.AddChild(new Label { Text = ability, ThemeTypeVariation = "Eyebrow" });
 
         foreach (var s in SkillsCatalog.ByAbility(ability))
             col.AddChild(BuildSkillRow(s, lockedFromBg, classOptions, chosen, required));
@@ -130,6 +134,7 @@ public partial class StepSkills : VBoxContainer, IStep
         var row = new PanelContainer
         {
             MouseFilter = MouseFilterEnum.Stop,
+            ThemeTypeVariation = "SkillRow",
         };
 
         // Visual state: dim unavailable rows, gild-tint background-locked,