Rebuild graph edges on changes

src/memory.ts

@@ -43,6 +43,7 @@ export class MemoryCache {
 
 	add(memory: Memory): void {
 		this.memories.push(memory);
+		rebuildGraph(this.memories);
 		this.rebuild();
 	}
 
@@ -53,6 +54,7 @@ export class MemoryCache {
 		} else {
 			this.memories.push(memory);
 		}
+		rebuildGraph(this.memories);
 		this.rebuild();
 	}
 
@@ -60,6 +62,7 @@ export class MemoryCache {
 		const idx = this.memories.findIndex(m => m.name === name);
 		if (idx !== -1) {
 			this.memories.splice(idx, 1);
+			rebuildGraph(this.memories);
 			this.rebuild();
 		}
 	}