feat: 尝试深度拷贝数据以分离引用

src/query.ts

@@ -479,6 +479,22 @@ async function* queryLoop(
 
     let messagesForQuery = getMessagesAfterCompactBoundary(messages)
 
+    // Release toolUseResult payloads from previous turns. By this point the
+    // UI has already rendered those results and the next API call only needs
+    // message.message.content (tool_result blocks), not the raw output object.
+    // This prevents unbounded memory growth in long sessions before compact
+    // triggers — a single FileRead of a 400KB file would otherwise stay in
+    // mutableMessages forever.
+    for (const msg of messagesForQuery) {
+      if (
+        msg.type === 'user' &&
+        'toolUseResult' in msg &&
+        msg.toolUseResult !== undefined
+      ) {
+        delete (msg as Message & { toolUseResult?: unknown }).toolUseResult
+      }
+    }
+
     let tracking = autoCompactTracking
 
     // Enforce per-message budget on aggregate tool result size. Runs BEFORE