fix(shell): readable ink prose + uniform consumable tiles

The narration RichTextLabel had no theme styling, so it rendered near-white
and was unreadable on parchment. Add a base RichTextLabel style to the theme
(dark INK_BODY serif at 20px, italic face wired) — systemic and previews in
the editor; every parchment prose surface now reads as dark ink. Also clip
the consumable slot labels so a long name ("Antidote") can't stretch its tile
wider than the empty ones — all 8 stay a uniform 62px.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

client/scenes/shell/MainWindowShell.tscn

@@ -176,6 +176,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Salve"
 
@@ -189,6 +191,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Draught"
 
@@ -202,6 +206,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Bomb"
 
@@ -215,6 +221,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Antidote"
 
@@ -228,6 +236,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Ration"
 
@@ -241,6 +251,8 @@ theme_type_variation = &"ItemTile"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 text = "Torch"
 
@@ -254,6 +266,8 @@ theme_type_variation = &"ItemTileEmpty"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 
 [node name="Slot8" type="PanelContainer" parent="Split/World/CommandBar/Consumables"]
@@ -266,6 +280,8 @@ theme_type_variation = &"ItemTileEmpty"
 layout_mode = 2
 horizontal_alignment = 1
 vertical_alignment = 2
+clip_text = true
+theme_override_font_sizes/font_size = 11
 theme_type_variation = &"Mono"
 
 [node name="EndTurn" type="Button" parent="Split/World/CommandBar"]