From 07b9d06cadef35dd12fbc152530222b5821d0dea Mon Sep 17 00:00:00 2001
From: catlog22 <catlog22@github.com>
Date: Mon, 23 Feb 2026 23:10:47 +0800
Subject: [PATCH] fix(memorycore): preserve tags in importMemories and guard
 division by zero

- Add tags: memory.tags to importMemories upsertMemory call to prevent
  tag loss during cross-project import
- Guard buildCompressionMetadata against division by zero when
  originalSize is 0
---
 ccw/src/core/core-memory-store.ts | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/ccw/src/core/core-memory-store.ts b/ccw/src/core/core-memory-store.ts
index 6b6c7398..78acf727 100644
--- a/ccw/src/core/core-memory-store.ts
+++ b/ccw/src/core/core-memory-store.ts
@@ -654,7 +654,7 @@ export class CoreMemoryStore {
   buildCompressionMetadata(sourceIds: string[], originalSize: number, compressedSize: number): string {
     return JSON.stringify({
       compressed_from: sourceIds,
-      compression_ratio: compressedSize / originalSize,
+      compression_ratio: originalSize > 0 ? compressedSize / originalSize : 0,
       compressed_at: new Date().toISOString()
     });
   }
@@ -1868,7 +1868,8 @@ export function importMemories(
       content: memory.content,
       summary: memory.summary,
       raw_output: memory.raw_output,
-      metadata: memory.metadata
+      metadata: memory.metadata,
+      tags: memory.tags
     });
 
     imported++;