Add presets (table/chair), object count, near_object condition, optimization locks placed objects and randomizes remaining

src/types/index.ts

@@ -26,6 +26,7 @@ export type ConditionKind =
   | 'walk_to_and_sit'
   | 'around_open_area'
   | 'near_entrance'
+  | 'near_object'
   | 'not_blocking_path'
   | 'accessible'
   | 'open_circulation';
@@ -87,8 +88,18 @@ export interface LayoutEvaluation {
   penalty: number;
 }
 
+export interface FurniturePreset {
+  id: string;
+  name: string;
+  shape: Omit<ShapeData, 'x' | 'y'>;
+  conditions: ConditionSpec[];
+  color?: string;
+}
+
 export interface LayoutState {
   room: RoomConfig;
   entrance: Entrance | null;
   furniture: FurnitureConfig[];
+  presets?: FurniturePreset[];
+  objectCount?: number;
 }