Add CIVIL tab to Bonsai Properties sidebar for alignment tools

- Add new CIVIL tab (4th position) with CURVE_DATA icon
- Create BIM_PT_tab_horizontal_alignment panel container
- Move alignment UI from N-panel to Properties sidebar
- Remove old "Saikei Civil" N-panel tab

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/bonsai/bonsai/bim/__init__.py

@@ -182,6 +182,8 @@ classes = [
     ui.BIM_PT_tab_materials,
     ui.BIM_PT_tab_styles,
     ui.BIM_PT_tab_profiles,
+    # Civil infrastructure
+    ui.BIM_PT_tab_horizontal_alignment,
     # Drawings and documents
     ui.BIM_PT_tab_sheets,
     ui.BIM_PT_tab_drawings,

src/bonsai/bonsai/bim/module/alignment/__init__.py

@@ -60,8 +60,8 @@ classes = (
     # Operators - Stationing
     operator.SAIKEI_OT_add_stationing_referent,
     operator.SAIKEI_OT_name_segments,
-    # UI Panels
+    # UI Panels (appear in Properties sidebar under CIVIL tab)
-    ui.SAIKEI_PT_horizontal_alignment,
+    ui.SAIKEI_PT_alignment_status,
     ui.SAIKEI_PT_alignment_creation,
     ui.SAIKEI_PT_pi_editor,
     ui.SAIKEI_PT_alignment_stationing,

src/bonsai/bonsai/bim/module/alignment/ui.py

@@ -19,7 +19,8 @@
 
 """UI panels for the alignment module
 
-All panels appear in the VIEW_3D N-panel under the "Saikei Civil" tab.
+All panels appear in the Properties sidebar under the CIVIL tab,
+nested under BIM_PT_tab_horizontal_alignment.
 """
 
 import bpy
@@ -118,39 +119,44 @@ class SAIKEI_UL_alignment_pis(UIList):
 
 
 # =============================================================================
-# Main Panel
+# Main Status Panel
 # =============================================================================
 
 
-class SAIKEI_PT_horizontal_alignment(Panel):
+class SAIKEI_PT_alignment_status(Panel):
-    """Main Horizontal Alignment panel in the N-panel"""
+    """Status panel showing IFC schema and alignment count"""
 
-    bl_label = "Horizontal Alignment"
+    bl_label = "Status"
-    bl_idname = "SAIKEI_PT_horizontal_alignment"
+    bl_idname = "SAIKEI_PT_alignment_status"
-    bl_space_type = "VIEW_3D"
+    bl_space_type = "PROPERTIES"
-    bl_region_type = "UI"
+    bl_region_type = "WINDOW"
-    bl_category = "Saikei Civil"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_tab_horizontal_alignment"
+    bl_options = {"HIDE_HEADER"}
+
+    @classmethod
+    def poll(cls, context):
+        return tool.Blender.should_show_panel(context, "CIVIL", cls.bl_idname) and tool.Ifc.get()
 
     def draw(self, context):
         layout = self.layout
         props = context.scene.SaikeiAlignmentProperties
-
-        # Status box
-        box = layout.box()
         ifc = tool.Ifc.get()
 
         if ifc is None:
-            box.label(text="No IFC file loaded", icon="ERROR")
+            row = layout.row()
-            box.label(text="Open an IFC4X3 file via Bonsai")
+            row.label(text="No IFC file loaded", icon="ERROR")
             return
 
         if ifc.schema != "IFC4X3":
-            box.label(text=f"Schema: {ifc.schema}", icon="ERROR")
+            row = layout.row()
-            box.label(text="Alignments require IFC4X3")
+            row.label(text=f"Schema: {ifc.schema}", icon="ERROR")
+            row = layout.row()
+            row.label(text="Alignments require IFC4X3")
             return
 
         # IFC file is loaded and correct schema
-        row = box.row()
+        row = layout.row()
         row.label(text="IFC4X3", icon="CHECKMARK")
 
         # Count alignments
@@ -159,9 +165,9 @@ class SAIKEI_PT_horizontal_alignment(Panel):
 
         # Active alignment selector
         if alignments:
-            box = layout.box()
+            row = layout.row()
-            box.label(text="Active Alignment:", icon="CURVE_PATH")
+            row.label(text="Active Alignment:", icon="CURVE_DATA")
-            row = box.row()
+            row = layout.row()
             row.prop(props, "active_alignment_name", text="")
 
 
@@ -175,15 +181,15 @@ class SAIKEI_PT_alignment_creation(Panel):
 
     bl_label = "Creation"
     bl_idname = "SAIKEI_PT_alignment_creation"
-    bl_space_type = "VIEW_3D"
+    bl_space_type = "PROPERTIES"
-    bl_region_type = "UI"
+    bl_region_type = "WINDOW"
-    bl_category = "Saikei Civil"
+    bl_context = "scene"
-    bl_parent_id = "SAIKEI_PT_horizontal_alignment"
+    bl_parent_id = "BIM_PT_tab_horizontal_alignment"
     bl_options = {"DEFAULT_CLOSED"}
 
     @classmethod
     def poll(cls, context):
-        return is_ifc4x3()
+        return tool.Blender.should_show_panel(context, "CIVIL", cls.bl_idname) and is_ifc4x3()
 
     def draw(self, context):
         layout = self.layout
@@ -198,7 +204,7 @@ class SAIKEI_PT_alignment_creation(Panel):
         # Creation operators
         col = layout.column(align=True)
         col.operator("saikei.create_alignment", icon="ADD")
-        col.operator("saikei.create_alignment_by_pi", icon="CURVE_PATH")
+        col.operator("saikei.create_alignment_by_pi", icon="CURVE_DATA")
         col.operator("saikei.import_alignment_csv", icon="IMPORT")
 
 
@@ -212,15 +218,15 @@ class SAIKEI_PT_pi_editor(Panel):
 
     bl_label = "PI Editor"
     bl_idname = "SAIKEI_PT_pi_editor"
-    bl_space_type = "VIEW_3D"
+    bl_space_type = "PROPERTIES"
-    bl_region_type = "UI"
+    bl_region_type = "WINDOW"
-    bl_category = "Saikei Civil"
+    bl_context = "scene"
-    bl_parent_id = "SAIKEI_PT_horizontal_alignment"
+    bl_parent_id = "BIM_PT_tab_horizontal_alignment"
     bl_options = set()  # Open by default
 
     @classmethod
     def poll(cls, context):
-        return is_ifc4x3()
+        return tool.Blender.should_show_panel(context, "CIVIL", cls.bl_idname) and is_ifc4x3()
 
     def draw(self, context):
         layout = self.layout
@@ -327,15 +333,15 @@ class SAIKEI_PT_alignment_stationing(Panel):
 
     bl_label = "Stationing"
     bl_idname = "SAIKEI_PT_alignment_stationing"
-    bl_space_type = "VIEW_3D"
+    bl_space_type = "PROPERTIES"
-    bl_region_type = "UI"
+    bl_region_type = "WINDOW"
-    bl_category = "Saikei Civil"
+    bl_context = "scene"
-    bl_parent_id = "SAIKEI_PT_horizontal_alignment"
+    bl_parent_id = "BIM_PT_tab_horizontal_alignment"
     bl_options = {"DEFAULT_CLOSED"}
 
     @classmethod
     def poll(cls, context):
-        return is_ifc4x3()
+        return tool.Blender.should_show_panel(context, "CIVIL", cls.bl_idname) and is_ifc4x3()
 
     def draw(self, context):
         layout = self.layout
@@ -352,4 +358,4 @@ class SAIKEI_PT_alignment_stationing(Panel):
         # Stationing operators
         col = layout.column(align=True)
         col.operator("saikei.add_stationing_referent", icon="EMPTY_AXIS")
-        col.operator("saikei.name_segments", icon="FONT_DATA")
+        col.operator("saikei.name_segments", icon="FONT_DATA")

src/bonsai/bonsai/bim/prop.py

@@ -496,15 +496,16 @@ def get_tab(
             ("PROJECT", "Project Overview", "", bonsai.bim.icons[icon_key].icon_id, 0),
             ("OBJECT", "Object Information", "", "FILE_3D", 1),
             ("GEOMETRY", "Geometry and Materials", "", "MATERIAL", 2),
-            ("DRAWINGS", "Drawings and Documents", "", "DOCUMENTS", 3),
+            ("CIVIL", "Civil Infrastructure", "", "CURVE_DATA", 3),
-            ("SERVICES", "Services and Systems", "", "NETWORK_DRIVE", 4),
+            ("DRAWINGS", "Drawings and Documents", "", "DOCUMENTS", 4),
-            ("STRUCTURE", "Structural Analysis", "", "EDITMODE_HLT", 5),
+            ("SERVICES", "Services and Systems", "", "NETWORK_DRIVE", 5),
-            ("SCHEDULING", "Costing and Scheduling", "", "NLA", 6),
+            ("STRUCTURE", "Structural Analysis", "", "EDITMODE_HLT", 6),
-            ("FM", "Facility Management", "", "PACKAGE", 7),
+            ("SCHEDULING", "Costing and Scheduling", "", "NLA", 7),
-            ("QUALITY", "Quality and Coordination", "", "COMMUNITY", 8),
+            ("FM", "Facility Management", "", "PACKAGE", 8),
-            ("BOOKMARK", "Bookmark", "", "SOLO_ON", 9),
+            ("QUALITY", "Quality and Coordination", "", "COMMUNITY", 9),
+            ("BOOKMARK", "Bookmark", "", "SOLO_ON", 10),
             None,
-            ("BLENDER", "Blender Properties", "", "BLENDER", 10),
+            ("BLENDER", "Blender Properties", "", "BLENDER", 11),
         ]
     return get_tab.enum_items
 

src/bonsai/bonsai/bim/ui.py

@@ -1675,6 +1675,25 @@ class BIM_PT_tab_profiles(Panel):
         pass
 
 
+# Civil Infrastructure tab panels
+class BIM_PT_tab_horizontal_alignment(Panel):
+    bl_idname = "BIM_PT_tab_horizontal_alignment"
+    bl_label = "Horizontal Alignment"
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_order = 1
+    bim_tab_name = "CIVIL"
+
+    @classmethod
+    def poll(cls, context):
+        if tool.Blender.should_show_panel(context, cls.bim_tab_name, cls.bl_idname) and tool.Ifc.get():
+            return True
+
+    def draw(self, context):
+        pass
+
+
 class BIM_PT_tab_sheets(Panel):
     bl_idname = "BIM_PT_tab_sheets"
     bl_label = "Sheets"
@@ -1861,6 +1880,7 @@ class UIData:
                 ("PROJECT", bonsai.bim.icons[f"{color_mode}_ifc"].icon_id, True),
                 ("OBJECT", "FILE_3D", is_ifc_project),
                 ("GEOMETRY", "MATERIAL", is_ifc_project),
+                ("CIVIL", "CURVE_DATA", is_ifc_project),
                 ("DRAWINGS", "DOCUMENTS", is_ifc_project),
                 ("SERVICES", "NETWORK_DRIVE", is_ifc_project),
                 ("STRUCTURE", "EDITMODE_HLT", is_ifc_project),