diff --git a/apps/ai-game-creator-shell/scripts/start-tauri-dev.mjs b/apps/ai-game-creator-shell/scripts/start-tauri-dev.mjs
index 95a866f95..87144db48 100644
--- a/apps/ai-game-creator-shell/scripts/start-tauri-dev.mjs
+++ b/apps/ai-game-creator-shell/scripts/start-tauri-dev.mjs
@@ -20,6 +20,7 @@ import {
 const appRoot = fileURLToPath(new URL('..', import.meta.url));
 const repoRoot = resolve(appRoot, '../..');
 const tauriCliPath = resolve(repoRoot, 'node_modules/@tauri-apps/cli/tauri.js');
+const AGC_DESIGN_DEBUG_ENV = 'GENARRATIVE_AGC_DESIGN_DEBUG';
 
 function buildTauriArguments(argv, devUrl = readAgcDevEndpoint().url) {
   const args = [...argv];
@@ -108,7 +109,10 @@ async function runTauriDev(
     if (!prepared || shutdownSignal) return 1;
     const tauriArguments = buildTauriArguments(argv, endpoint.url);
     child = spawnCli(tauriArguments, {
-      env: withAgcDevEndpointEnv(endpoint),
+      env: {
+        ...withAgcDevEndpointEnv(endpoint),
+        [AGC_DESIGN_DEBUG_ENV]: '1',
+      },
     });
     const childResult = waitForCli(child);
     const outcome = await Promise.race([
diff --git a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
index f20f92c23..8dba870dd 100644
--- a/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
+++ b/apps/ai-game-creator-shell/src-tauri/src/agent/design_runtime.rs
@@ -460,6 +460,13 @@ fn build_design_request(
 
 // 调试队列只接收副本，写盘慢或失败时丢弃，不参与会话恢复。
 fn design_debug(root: &Path, kind: &str, data: Value) {
+    if std::env::var("GENARRATIVE_AGC_DESIGN_DEBUG")
+        .ok()
+        .as_deref()
+        != Some("1")
+    {
+        return;
+    }
     type Entry = (PathBuf, Value);
     static QUEUE: OnceLock<std::sync::mpsc::SyncSender<Entry>> = OnceLock::new();
     let sender = QUEUE.get_or_init(|| {