diff --git a/backend/magic_plan/models.py b/backend/magic_plan/models.py
index 5bb5e413..016f2c65 100644
--- a/backend/magic_plan/models.py
+++ b/backend/magic_plan/models.py
@@ -14,6 +14,7 @@ class MagicPlanRoomPoint:
 @dataclass
 class MagicPlanWallPoint:
     """Point in <exploded><wall> — absolute coords, no uid or values."""
+
     x: float
     y: float
     height: float
@@ -22,18 +23,19 @@ class MagicPlanWallPoint:
 @dataclass
 class MagicPlanDoor:
     """Door in <floorRoom> context — wall-relative position."""
+
     wall_point_index: int
     type: str
-    u: float                   # position along wall (0-1)
-    width: float               # m
-    depth: float               # m
-    height: float              # m
+    u: float
+    width: float  # m
+    depth: float  # m
+    height: float  # m
     orientation: int
     snapped_type: str
     snapped_position: float
-    snapped_width: float       # m
-    snapped_depth: float       # m
-    snapped_height: float      # m
+    snapped_width: float  # m
+    snapped_depth: float  # m
+    snapped_height: float  # m
     snapped_orientation: int
     inset_x: float
     inset_y: float
@@ -45,18 +47,19 @@ class MagicPlanDoor:
 @dataclass
 class MagicPlanWindow:
     """Window in <floorRoom> context — wall-relative position."""
+
     wall_point_index: int
     type: str
-    u: float                   # position along wall (0-1)
-    width: float               # m
-    depth: float               # m
-    height: float              # m
+    u: float
+    width: float  # m
+    depth: float  # m
+    height: float  # m
     orientation: int
     snapped_type: str
     snapped_position: float
-    snapped_width: float       # m
-    snapped_depth: float       # m
-    snapped_height: float      # m
+    snapped_width: float  # m
+    snapped_depth: float  # m
+    snapped_height: float  # m
     snapped_orientation: int
     inset_x: float
     inset_y: float
@@ -67,14 +70,15 @@ class MagicPlanWindow:
 @dataclass
 class MagicPlanExplodedOpening:
     """Door or window in <exploded> context — absolute coords, no snapped* fields."""
+
     type: str
     x1: float
     y1: float
     x2: float
     y2: float
-    width: float               # m
-    depth: float               # m
-    height: float              # m
+    width: float  # m
+    depth: float  # m
+    height: float  # m
     inset_x: float
     inset_y: float
     orientation: int
@@ -89,12 +93,12 @@ class MagicPlanFurniture:
     snapped_x: float
     snapped_y: float
     angle: float
-    width: float               # m
-    depth: float               # m
-    height: float              # m
-    snapped_width: float       # m
-    snapped_depth: float       # m
-    snapped_height: float      # m
+    width: float  # m
+    depth: float  # m
+    height: float  # m
+    snapped_width: float  # m
+    snapped_depth: float  # m
+    snapped_height: float  # m
     size_lock_0: str
     size_lock_1: str
     size_lock_2: str
@@ -114,7 +118,7 @@ class MagicPlanMainDimension:
 
 @dataclass
 class MagicPlanExplodedWall:
-    wall_type: str             # "exterior" | "interior"
+    wall_type: str  # "exterior" | "interior"
     points: list[MagicPlanWallPoint]
 
 
@@ -132,7 +136,7 @@ class MagicPlanSymbolInstance:
     uid: str
     parent_uid: str
     symbol: str
-    values: dict[str, str]    # ceilingHeight, width, height, depth, distanceUnit, etc.
+    values: dict[str, str]  # ceilingHeight, width, height, depth, distanceUnit, etc.
 
 
 @dataclass
@@ -145,9 +149,9 @@ class MagicPlanRoom:
     was_modified: bool
     linked_room_0: str
     linked_room_1: str
-    area: float               # m²
-    perimeter: float          # m
-    values: dict[str, str]    # ceilingHeight, label, etc.
+    area: float  # m²
+    perimeter: float  # m
+    values: dict[str, str]  # ceilingHeight, label, etc.
     points: list[MagicPlanRoomPoint]
     doors: list[MagicPlanDoor]
     windows: list[MagicPlanWindow]
@@ -159,12 +163,12 @@ class MagicPlanRoom:
 class MagicPlanFloor:
     uid: str
     name: str
-    floor_type: str           # "0"=ground, "1"=upper, "2"=basement
+    floor_type: str  # "0"=ground, "1"=upper, "2"=basement
     rotation: float
     compass_angle: float
-    area_without_walls: float          # m²
+    area_without_walls: float  # m²
     area_with_interior_walls_only: float  # m²
-    area_with_walls: float             # m²
+    area_with_walls: float  # m²
     symbol_instance: MagicPlanSymbolInstance
     rooms: list[MagicPlanRoom]
     furniture: list[MagicPlanFurniture]  # floor-level furniture (not inside any room)
@@ -174,6 +178,7 @@ class MagicPlanFloor:
 @dataclass
 class MagicPlanSummary:
     """Plan metadata returned by the list-plans API endpoint."""
+
     id: str
     project_id: str
     name: str
@@ -192,6 +197,7 @@ class MagicPlanSummary:
 @dataclass
 class MagicPlanDetail:
     """Full plan response: summary metadata + parsed XML plan."""
+
     summary: MagicPlanSummary
     plan_xml: "MagicPlanPlan"
 
@@ -202,12 +208,12 @@ class MagicPlanPlan:
     uid: str
     name: str
     type: str
-    interior_wall_width: float        # m
-    exterior_wall_width: float        # m
+    interior_wall_width: float  # m
+    exterior_wall_width: float  # m
     schematic: bool
     has_land_survey_address: bool
     last_patch_identifier: str
     last_roll_identifier: str
-    values: dict[str, str]            # date, statistics.*, distanceUnit, etc.
+    values: dict[str, str]  # date, statistics.*, distanceUnit, etc.
     floors: list[MagicPlanFloor]
     interior_room_floors: list[MagicPlanFloor]  # from <interiorRoomPoints>