Make TabbedPanelImage/Label mode-aware for icon extraction

- TabbedPanelImage/Label now return plain tables in RmlUi mode
- These wrappers work with ActionButton to provide icons
- Convert texture_editor.lua to use ActionButton (4 buttons)
- Convert players_window.lua to use ActionButton (1 button)
- Fixes crash when old editors created Chili buttons with plain table children

Author: claude

scen_edit/view/general/players_window.lua

@@ -24,7 +24,7 @@ function PlayersWindow:init()
     SB.model.teamManager:addListener(self)
     self:Populate()
 
-    self.btnAddPlayer = TabbedPanelButton({
+    self.btnAddPlayer = ActionButton({
         x = 0,
         y = 0,
         tooltip = "Add team",

scen_edit/view/main_window/main_window_panel.lua

@@ -31,12 +31,12 @@ function TabbedPanelButton(tbl)
 end
 
 function TabbedPanelImage(tbl)
-    -- In RmlUi mode, just return the table with file property for extraction
+    -- In RmlUi mode, return plain table (for ActionButton wrapper)
     if SB.view and SB.view.useRmlUi then
-        return tbl  -- Return plain table { file = "..." }
+        return tbl
     end
 
-    -- Chili mode - create actual Image object
+    -- In Chili mode, create Chili Image object
     return Image:New(Table.Merge({
         width = SB.conf.TOOLBOX_ITEM_WIDTH / 2,
         height = SB.conf.TOOLBOX_ITEM_HEIGHT / 2,
@@ -47,12 +47,12 @@ function TabbedPanelImage(tbl)
 end
 
 function TabbedPanelLabel(tbl)
-    -- In RmlUi mode, just return the table with caption property for extraction
+    -- In RmlUi mode, return plain table (for ActionButton wrapper)
     if SB.view and SB.view.useRmlUi then
-        return tbl  -- Return plain table { caption = "..." }
+        return tbl
     end
 
-    -- Chili mode - create actual Label object
+    -- In Chili mode, create Chili Label object
     return Label:New(Table.Merge({
         bottom = SB.conf.TOOLBOX_ITEM_HEIGHT / 8,
         width = SB.conf.TOOLBOX_ITEM_WIDTH,

scen_edit/view/map/texture_editor.lua

@@ -137,7 +137,7 @@ function TextureEditor:init()
         name = "dntsIndex",
         value = 0,
     }))
-    self.btnPaint = TabbedPanelButton({
+    self.btnPaint = ActionButton({
         x = 0,
         y = 0,
         tooltip = "Paint the terrain",
@@ -162,7 +162,7 @@ function TextureEditor:init()
             end
         },
     })
-    self.btnFilter = TabbedPanelButton({
+    self.btnFilter = ActionButton({
         x = SB.conf.TOOLBOX_ITEM_WIDTH,
         y = 0,
         tooltip = "Apply a filter",
@@ -190,7 +190,7 @@ function TextureEditor:init()
             end
         },
     })
-    self.btnDNTS = TabbedPanelButton({
+    self.btnDNTS = ActionButton({
         x = SB.conf.TOOLBOX_ITEM_WIDTH * 2,
         y = 0,
         tooltip = "DNTS textures",
@@ -234,7 +234,7 @@ function TextureEditor:init()
             end
         },
     })
-    self.btnVoid = TabbedPanelButton({
+    self.btnVoid = ActionButton({
         x = SB.conf.TOOLBOX_ITEM_WIDTH * 3,
         y = 0,
         tooltip = "Make the terrain transparent",