Tool windows redesign and the Novel Editor workspace

Tool windows:
- Every editor (scenario, scene builder, map, interactive objects,
  lighting, catalog export) is rebuilt on the interface ToolWindow chrome
  and the denser ToolTheme: header with title/close, status bar, Ctrl+S,
  dirty-state confirmation.
- Shared building blocks in src/Common: ToolUi (rows, buttons, sections),
  CollapsibleSection, FilteredList, ModFileSelector, DragHandle and
  BackgroundCanvas (scene background with pan/zoom).
- The map, interactive and light editors draw on canvases
  (MapEditorCanvas, InteractiveEditorCanvas, LightEditorCanvas) instead of
  one Control "handle" node per object; the *Handle classes are removed.
- Scenario editor: tab data model (TabData), automatic graph layout
  (ScenarioGraphLayout), file tree/info/thumbnail panel updates.
- Services: ModFileService (mod file listing and writing),
  SceneBackgroundService; MapFileService/ModResourceService follow.
- Catalog export: per-language name/description editing.
- Locale (en/ru) regrouped under tools/*; unused keys removed.

Novel Editor:
- collections/novel_editor.json: a "game" whose entry scene is an
  authoring workspace over the novel engine and the story content.
- NovelEditorHub (scenes/novel_editor_hub.tscn) lists every installed
  tool through IToolProvider.AddMenuButton; ToolsInitializer registers it
  as the logical scene "novel_editor".

src/ScenarioEditor/ScenarioInfoPanel.cs

@@ -1,5 +1,7 @@
 using System.Linq;
 using Cthangover.Tools.Services;
+using Cthangover.Core.UI.Theming;
+using Cthangover.Mods.Interface.Tool;
 using Godot;
 
 namespace Cthangover.Core.UI.Tool.ScenarioEditor
@@ -14,26 +16,59 @@ namespace Cthangover.Core.UI.Tool.ScenarioEditor
         private Label _infoLocaleKeys;
         private Label _infoQuestRefs;
 
-        public ScenarioInfoPanel()
+        /// <summary>Binds the rows once the panel enters the tree (see <see cref="Bind"/>).</summary>
+        public override void _Ready()
         {
-            GetNode<Label>("Scroll/VBox/HintScene").Text = TranslationServer.Translate("tools/scenario_editor/info_scene") + ":";
-            GetNode<Label>("Scroll/VBox/HintPriority").Text = TranslationServer.Translate("tools/scenario_editor/info_priority") + ":";
-            GetNode<Label>("Scroll/VBox/HintCondition").Text = TranslationServer.Translate("tools/scenario_editor/info_condition") + ":";
-            GetNode<Label>("Scroll/VBox/HintSwitchTargets").Text = TranslationServer.Translate("tools/scenario_editor/info_switch_targets") + ":";
-            GetNode<Label>("Scroll/VBox/HintLocaleKeys").Text = TranslationServer.Translate("tools/scenario_editor/info_locale_keys") + ":";
-            GetNode<Label>("Scroll/VBox/HintQuestRefs").Text = TranslationServer.Translate("tools/scenario_editor/info_quest_refs") + ":";
+            Bind();
+        }
 
-            _infoScene = GetNode<Label>("Scroll/VBox/InfoScene");
-            _infoPriority = GetNode<Label>("Scroll/VBox/InfoPriority");
-            _infoCondition = GetNode<Label>("Scroll/VBox/InfoCondition");
-            _infoSwitchTargets = GetNode<Label>("Scroll/VBox/InfoSwitchTargets");
-            _infoLocaleKeys = GetNode<Label>("Scroll/VBox/InfoLocaleKeys");
-            _infoQuestRefs = GetNode<Label>("Scroll/VBox/InfoQuestRefs");
+        /// <summary>
+        /// Looks the rows up lazily: the tscn builder runs the constructor before
+        /// the child nodes exist, so lookups there would fail.
+        /// </summary>
+        private void Bind()
+        {
+            if (_infoScene != null)
+                return;
+
+            SetHint("HintScene", "tools/scenario_editor/info_scene");
+            SetHint("HintPriority", "tools/scenario_editor/info_priority");
+            SetHint("HintCondition", "tools/scenario_editor/info_condition");
+            SetHint("HintSwitchTargets", "tools/scenario_editor/info_switch_targets");
+            SetHint("HintLocaleKeys", "tools/scenario_editor/info_locale_keys");
+            SetHint("HintQuestRefs", "tools/scenario_editor/info_quest_refs");
+
+            _infoScene = Value("InfoScene");
+            _infoPriority = Value("InfoPriority");
+            _infoCondition = Value("InfoCondition");
+            _infoSwitchTargets = Value("InfoSwitchTargets");
+            _infoLocaleKeys = Value("InfoLocaleKeys");
+            _infoQuestRefs = Value("InfoQuestRefs");
+        }
+
+        private void SetHint(string node, string key)
+        {
+            var label = GetNode<Label>("Scroll/VBox/" + node);
+            label.Text = TranslationServer.Translate(key).ToString().ToUpperInvariant();
+            label.AddThemeColorOverride("font_color", UiTokens.Muted);
+            label.AddThemeFontSizeOverride("font_size", UiTokens.FontSmall);
+        }
+
+        private Label Value(string node)
+        {
+            var label = GetNode<Label>("Scroll/VBox/" + node);
+            label.AutowrapMode = TextServer.AutowrapMode.WordSmart;
+            label.SizeFlagsHorizontal = SizeFlags.ExpandFill;
+            label.CustomMinimumSize = new Vector2(120, 0);
+            label.AddThemeFontOverride("font", ToolWindow.GetMonospaceFont());
+            label.AddThemeFontSizeOverride("font_size", UiTokens.FontBodySmall);
+            return label;
         }
 
         /// <summary>Parses the given scenario text and refreshes every metadata row.</summary>
         public void Update(string text)
         {
+            Bind();
             if (string.IsNullOrEmpty(text))
             {
                 Clear();
@@ -54,6 +89,7 @@ namespace Cthangover.Core.UI.Tool.ScenarioEditor
         /// <summary>Resets every metadata row to the "-" placeholder.</summary>
         public void Clear()
         {
+            Bind();
             _infoScene.Text = "-";
             _infoPriority.Text = "-";
             _infoCondition.Text = "-";