补全Linux持久命令沙箱说明

恢复 command.start 的 workspace-write 与 network-disabled 合同
增加 Linux 平台持久命令沙箱回归断言

apps/ai-game-creator-shell/src-tauri/src/agent/runtime_actions/provider_request_builders.rs

@@ -25,7 +25,7 @@ fn provider_command_exec_contract() -> &'static str {
 
 #[cfg(target_os = "linux")]
 fn provider_command_start_contract() -> &'static str {
-    "command.start 使用 {\"program\":\"受信任 PATH 中的裸可执行名\",\"args\":[\"逐项 argv\"],\"cwd\":\"项目内相对目录\",\"timeoutSeconds\":300}"
+    "command.start 使用 {\"program\":\"受信任 PATH 中的裸可执行名\",\"args\":[\"逐项 argv\"],\"cwd\":\"项目内相对目录\",\"timeoutSeconds\":300}；Linux 持久进程同样固定运行在 bubblewrap workspace-write、network-disabled 沙箱内"
 }
 
 #[cfg(not(target_os = "linux"))]
@@ -493,9 +493,12 @@ mod tests {
         assert_eq!(supervisor_prompt.matches("command.exec 使用").count(), 1);
         assert_eq!(supervisor_prompt.matches("command.start 使用").count(), 1);
         #[cfg(target_os = "linux")]
-        assert!(
-            !supervisor_prompt.contains("command.exec 使用 {\"program\":\"cargo|npm|node|git|rg\"")
-        );
+        {
+            assert!(!supervisor_prompt
+                .contains("command.exec 使用 {\"program\":\"cargo|npm|node|git|rg\""));
+            assert!(provider_command_start_contract().contains("workspace-write"));
+            assert!(provider_command_start_contract().contains("network-disabled"));
+        }
 
         let ordinary_state = start_game_creator_agent_runtime_task_at(
             &root,