diff --git a/apps/ai-game-creator-shell/scripts/check-config.mjs b/apps/ai-game-creator-shell/scripts/check-config.mjs
index 037526aaa..91e3a982c 100644
--- a/apps/ai-game-creator-shell/scripts/check-config.mjs
+++ b/apps/ai-game-creator-shell/scripts/check-config.mjs
@@ -114,6 +114,7 @@ const allowedUncalledTauriCommands = [
   'open_game_creator_launcher_window',
   'open_game_creator_workspace_window',
   'read_direct_project_conversation',
+  'reset_design_agent_session',
   'stop_local_game_preview_if_matches',
   'start_game_creator_external_mcp',
   'stop_game_creator_external_mcp',
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 3fad0ae77..a8bb580e9 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
@@ -835,7 +835,15 @@ pub(crate) fn hydrate_design_agent_session(
         return Ok(None);
     }
     let project_id = design_project_id(root)?;
-    let Some(session) = read_design_session(root)? else {
+    let session = match read_design_session(root) {
+        Ok(session) => session,
+        Err(error) if design_session_error_is_recoverable(&error) => {
+            quarantine_corrupted_design_session(root)?;
+            return Ok(None);
+        }
+        Err(error) => return Err(error),
+    };
+    let Some(session) = session else {
         return Ok(None);
     };
     if session.project_id != project_id {
@@ -845,20 +853,35 @@ pub(crate) fn hydrate_design_agent_session(
     Ok(Some(design_view(&session, active.is_none())))
 }
 
+fn design_session_error_is_recoverable(error: &str) -> bool {
+    error.contains("策划 Agent 会话")
+        && (error.contains("解析")
+            || error.contains("字段无效")
+            || error.contains("超过")
+            || error.contains("JSON"))
+}
+
+fn quarantine_corrupted_design_session(root: &Path) -> Result<(), String> {
+    let _lock = acquire_game_creator_agent_runtime_project_write_lock_with_wait(
+        root,
+        "design.session-quarantine",
+    )?;
+    let path = crate::agent::runtime_protocol::design_session_path(root);
+    if !path.exists() {
+        return Ok(());
+    }
+    let backup = path.with_file_name(format!("session.corrupted.{}.json", unix_timestamp()));
+    std::fs::rename(&path, &backup).map_err(|error| format!("隔离损坏的策划会话失败：{error}"))
+}
+
 #[tauri::command]
 pub(crate) fn reset_design_agent_session(project_path: String) -> Result<(), String> {
     let root = Path::new(project_path.trim());
     enforce_project_permission_policy(root, "conversation.write")?;
     design_project_id(root)?;
-    let _lock = acquire_game_creator_agent_runtime_project_write_lock_with_wait(
-        root,
-        "design.session-reset",
-    )?;
     let path = crate::agent::runtime_protocol::design_session_path(root);
     if path.exists() {
-        let backup = path.with_file_name(format!("session.corrupted.{}.json", unix_timestamp()));
-        std::fs::rename(&path, &backup)
-            .map_err(|error| format!("备份损坏的策划会话失败：{error}"))?;
+        quarantine_corrupted_design_session(root)?;
     }
     Ok(())
 }