Panels: colored headers and fixed order

Every WTD panel gets a colored icon in its header (config PANEL_COLORS,
the Scene Manager sub-panels share its green) and the sidebar order is
set with bl_order: Tools, Rename, Scene Manager, Shot Manager, Sanity
Check.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ui/panel.py

@@ -166,11 +166,21 @@ def _draw_check(layout, context, check, report, disabled):
     col.separator(factor=0.5)
 
 
+def _draw_color_header(self, context):
+    """Colored icon in the panel header (config PANEL_COLORS), to tell the tools apart."""
+    self.layout.label(text="", icon=config.PANEL_COLORS.get(self.color, "NONE"))
+
+
+# Sidebar order (bl_order), top to bottom: Tools, Rename, Scene Manager, Shot Manager,
+# Sanity Check.
 class _SanityPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Sanity Check"
     bl_options = {"DEFAULT_CLOSED"}  # panel starts collapsed
+    bl_order = 4
+    color = "Sanity Check"
+    draw_header = _draw_color_header
 
     def draw(self, context):
         draw_sanity_checks_panel(self, context)
@@ -180,6 +190,9 @@ class _ToolsPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Tools"
+    bl_order = 0
+    color = "Tools"
+    draw_header = _draw_color_header
 
     def draw(self, context) -> None:
         layout = self.layout
@@ -197,6 +210,9 @@ class _RenamePanel:
     bl_category = "WTD"
     bl_label = "Rename"
     bl_options = {"DEFAULT_CLOSED"}  # panel starts collapsed
+    bl_order = 1
+    color = "Rename"
+    draw_header = _draw_color_header
 
     PREVIEW_COUNT = 10
 
@@ -294,6 +310,9 @@ class _ShotViewerPanel:
     bl_category = "WTD"
     bl_label = "Shot Manager"
     bl_options = {"DEFAULT_CLOSED"}  # panel starts collapsed
+    bl_order = 3
+    color = "Shot Manager"
+    draw_header = _draw_color_header
 
     def draw(self, context) -> None:
         layout = self.layout
@@ -361,6 +380,9 @@ class _SceneManagerPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Scene Manager"
+    bl_order = 2
+    color = "Scene Manager"
+    draw_header = _draw_color_header
 
     def draw(self, context) -> None:
         layout = self.layout
@@ -417,6 +439,8 @@ class _SceneCastingPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Casting"
+    color = "Scene Manager"
+    draw_header = _draw_color_header
     bl_parent_id = "WTD_PT_scene_manager_view3d"
 
     def draw(self, context) -> None:
@@ -509,6 +533,8 @@ class _SceneLoadedPanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Loaded"
+    color = "Scene Manager"
+    draw_header = _draw_color_header
     bl_parent_id = "WTD_PT_scene_manager_view3d"
 
     def draw(self, context) -> None:
@@ -640,6 +666,8 @@ class _SceneAssetizePanel:
     bl_region_type = "UI"
     bl_category = "WTD"
     bl_label = "Assetize"
+    color = "Scene Manager"
+    draw_header = _draw_color_header
     bl_parent_id = "WTD_PT_scene_manager_view3d"
     bl_options = {"DEFAULT_CLOSED"}
 
@@ -710,15 +738,15 @@ class WTD_PT_sanity_sequencer(_SanityPanel, bpy.types.Panel):
 
 classes = (
     WTD_UL_shots,
-    WTD_PT_sanity_view3d,
     WTD_PT_tools_view3d,
-    WTD_PT_shot_viewer_view3d,
+    WTD_PT_rename_view3d,
+    WTD_PT_rename_node_editor,
     WTD_PT_scene_manager_view3d,
     WTD_PT_scene_casting_view3d,
     WTD_PT_scene_loaded_view3d,
     WTD_PT_scene_assetize_view3d,
-    WTD_PT_rename_view3d,
-    WTD_PT_rename_node_editor,
+    WTD_PT_shot_viewer_view3d,
+    WTD_PT_sanity_view3d,
     WTD_PT_sanity_sequencer,
 )