sgclaw: snapshot today's runtime and skill updates

tests/agent_runtime_test.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 use std::time::Duration;
 
 use common::MockTransport;
+use sgclaw::agent::handle_browser_message;
 use sgclaw::agent::runtime::{browser_action_tool_definition, execute_task_with_provider};
 use sgclaw::llm::{ChatMessage, LlmError, LlmProvider, ToolDefinition, ToolFunctionCall};
 use sgclaw::pipe::{Action, AgentMessage, BrowserMessage, BrowserPipeTool, Timing};
@@ -132,3 +133,46 @@ fn runtime_executes_provider_tool_calls_and_returns_summary() {
             if *seq == 2 && action == &Action::Type
     ));
 }
+
+#[test]
+fn legacy_agent_runtime_is_explicitly_dev_only() {
+    assert!(sgclaw::agent::runtime::LEGACY_DEV_ONLY);
+}
+
+#[test]
+fn production_submit_task_does_not_route_into_legacy_runtime_without_llm_config() {
+    std::env::remove_var("DEEPSEEK_API_KEY");
+    std::env::remove_var("DEEPSEEK_BASE_URL");
+    std::env::remove_var("DEEPSEEK_MODEL");
+
+    let transport = Arc::new(MockTransport::new(vec![]));
+    let browser_tool = BrowserPipeTool::new(
+        transport.clone(),
+        test_policy(),
+        vec![1, 2, 3, 4, 5, 6, 7, 8],
+    )
+    .with_response_timeout(Duration::from_secs(1));
+
+    handle_browser_message(
+        transport.as_ref(),
+        &browser_tool,
+        BrowserMessage::SubmitTask {
+            instruction: "打开百度".to_string(),
+            conversation_id: String::new(),
+            messages: vec![],
+            page_url: String::new(),
+            page_title: String::new(),
+        },
+    )
+    .unwrap();
+
+    let sent = transport.sent_messages();
+    assert!(matches!(
+        sent.last(),
+        Some(AgentMessage::TaskComplete { success, summary })
+            if !success && summary.contains("未配置大语言模型")
+    ));
+    assert!(!sent
+        .iter()
+        .any(|message| { matches!(message, AgentMessage::Command { .. }) }));
+}