feat: complete P0/P1/P2 — WebUI SPA, OpenClaw sidecar+simulator, healthcheck auto-sched+perf

P0: WebUI重构
- 完整 SPA 仪表盘 (7标签页), //go:embed dashboard.html
P1: OpenClaw兼容 (三通道: SKILL.md / sidecar / simulator)
- Node.js 模拟进程统一加载任意 OpenClaw 插件
- JSON-RPC 2.0 over stdio 协议, go:embed 内嵌
P2: Healthcheck 优化
- 定时自动执行 (startAutoCheck, 30min)
- healthcheck_perf 性能监控工具

其他: agentcli/cmd 插件, integration_test, status.go,
      test_deepseek 清理, 多项 bug 修复

internal/agent/api/provider.go

@@ -605,6 +605,22 @@ func (m *ProviderManager) Default() Provider {
 	return m.providers[m.default_]
 }
 
+// QuickChat 向默认 LLM Provider 发送一条简短消息并返回回复。
+// 这是一个"非记忆"调用——直接通过 Provider HTTP 调用，不经过 Agent 的记忆/蒸馏管线。
+// 适用于健康检查、系统自检等不需要产生记忆碎片的场景。
+func (m *ProviderManager) QuickChat(ctx context.Context, prompt string) (*CompletionResponse, error) {
+	p := m.Default()
+	if p == nil {
+		return nil, fmt.Errorf("no default provider")
+	}
+	return p.Chat(ctx, &CompletionRequest{
+		Messages: []Message{
+			{Role: "user", Content: prompt},
+		},
+		MaxTokens: 128,
+	})
+}
+
 func (m *ProviderManager) List() []string {
 	m.mu.RLock()
 	defer m.mu.RUnlock()

internal/agent/api/quickchat_test.go

@@ -0,0 +1,54 @@
+package api
+
+import (
+	"context"
+	"os"
+	"testing"
+	"time"
+
+	luaVM "gitcode.com/JianFeeeee/HomeAgent/internal/lua"
+)
+
+func TestQuickChatWithRealKey(t *testing.T) {
+	apiKey := os.Getenv("DEEPSEEK_API_KEY")
+	if apiKey == "" {
+		t.Skip("DEEPSEEK_API_KEY not set — skipping real LLM test")
+	}
+
+	tmpDir := t.TempDir()
+
+	vm := luaVM.NewVM(tmpDir + "/adapters")
+	if err := vm.Start(); err != nil {
+		t.Fatal(err)
+	}
+	defer vm.Stop()
+
+	pm := NewProviderManager()
+	pm.Register("deepseek", NewLuaAdaptedProvider(BaseConfig{
+		Model:   "deepseek-v4-flash",
+		BaseURL: "https://api.deepseek.com",
+		APIKey:  apiKey,
+	}, vm, "deepseek"))
+
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	start := time.Now()
+	resp, err := pm.QuickChat(ctx, "请回复'OK'，不要输出其他内容")
+	elapsed := time.Since(start)
+
+	if err != nil {
+		t.Fatalf("QuickChat failed: %v", err)
+	}
+
+	if resp.Content == "" {
+		t.Fatal("empty response")
+	}
+
+	t.Logf("Response: %q", resp.Content)
+	t.Logf("Time: %v", elapsed.Round(time.Millisecond))
+	if resp.TokenUsage.Total > 0 {
+		t.Logf("Tokens: %d (prompt %d + completion %d)",
+			resp.TokenUsage.Total, resp.TokenUsage.Prompt, resp.TokenUsage.Completion)
+	}
+}