test(kernel,growth): Phase 1 缝测试安全网 — 3条核心链路 19 测试全部通过

对话链路: 4 缝测试 (Tauri→Kernel / Kernel→LLM / LLM→UI / 流式生命周期)
Hands链路: 3 缝测试 (工具路由 / 执行回调 / 通用工具)
记忆链路: 3 缝测试 (FTS5存储 / 模式检索 / 去重)
冒烟测试: 3 Rust + 8 TypeScript 全量 PASS
- Kernel::boot_with_driver() 测试辅助方法
- 全量 cargo test 0 回归

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

crates/zclaw-kernel/tests/smoke_chat.rs

@@ -0,0 +1,59 @@
+//! Chat smoke test — full lifecycle: send → stream → persist
+//!
+//! Uses MockLlmDriver to verify the complete chat pipeline without a real LLM.
+
+use std::sync::Arc;
+use zclaw_kernel::{Kernel, KernelConfig};
+use zclaw_runtime::test_util::MockLlmDriver;
+use zclaw_runtime::{LoopEvent, LlmDriver};
+use zclaw_types::AgentConfig;
+
+#[tokio::test]
+async fn smoke_chat_full_lifecycle() {
+    let mock = MockLlmDriver::new().with_text_response("Hello! I am the mock assistant.");
+    let config = KernelConfig::default();
+    let kernel = Kernel::boot_with_driver(config, Arc::new(mock) as Arc<dyn LlmDriver>)
+        .await
+        .expect("kernel boot");
+
+    let agent = AgentConfig::new("smoke-agent")
+        .with_system_prompt("You are a test assistant.");
+    let id = agent.id;
+    kernel.spawn_agent(agent).await.expect("spawn agent");
+
+    // 1. Non-streaming: send and get response
+    let resp = kernel.send_message(&id, "Hello".to_string()).await.expect("send");
+    assert!(!resp.content.is_empty());
+    assert!(resp.output_tokens > 0);
+
+    // 2. Streaming: send and collect all events
+    let mut rx = kernel
+        .send_message_stream(&id, "Tell me more".to_string())
+        .await
+        .expect("stream");
+
+    let mut delta_count = 0;
+    let mut complete_result = None;
+    while let Some(event) = rx.recv().await {
+        match event {
+            LoopEvent::Delta(text) => {
+                delta_count += 1;
+                assert!(!text.is_empty(), "delta should have content");
+            }
+            LoopEvent::Complete(result) => {
+                complete_result = Some(result);
+                break;
+            }
+            LoopEvent::Error(msg) => panic!("unexpected error: {}", msg),
+            _ => {}
+        }
+    }
+
+    assert!(delta_count > 0, "should receive at least one delta");
+    let result = complete_result.expect("should receive complete");
+    assert!(result.output_tokens > 0);
+
+    // 3. Verify session persistence — messages were saved
+    let agent_info = kernel.get_agent(&id).expect("agent should exist");
+    assert!(agent_info.message_count >= 2, "at least 2 messages should be tracked");
+}