feat: 插件工具按需拉取(get_plugin_tools) + 设备命令类型拆分(shell-cmd/homeagent-cmd)

1. 提示词去污染: buildToolCatalog 从全量工具定义改为按插件分组摘要
   (插件名 + 工具数 + 能力概览), 完整工具定义由新工具 get_plugin_tools(plugin_name)
   动态拉取; 新增 executeGetPluginTools 支持按插件过滤 stageHost/io 工具
2. 设备命令类型: device_ctl_cmdrun 的 command 支持前缀区分
   - shell-cmd <cmd>      -> 设备端执行原生 shell
   - homeagent-<cap>      -> 设备端 HomeAgent 内置能力(如 camerasue/screensue)
   - homeagent-cmd <cap>  -> 同上(兼容写法)
   PushCmd 增加 cmd_type 字段下发给设备端分发
3. 测试: TestExecuteGetPluginTools 验证按插件拉取/全部摘要/未知插件

internal/agent/core/gpttest_test.go

@@ -0,0 +1,33 @@
+package core
+
+import (
+	"strings"
+	"testing"
+
+	"gitcode.com/JianFeeeee/HomeAgent/internal/sdk"
+)
+
+func TestExecuteGetPluginTools(tmp *testing.T) {
+	sh := NewStageHost()
+	sh.RegisterTool("weather_current", sdk.ToolDef{Name: "weather_current", Plugin: "weather", Description: "当前天气", Parameters: map[string]interface{}{"type": "object"}}, nil)
+	sh.RegisterTool("weather_forecast", sdk.ToolDef{Name: "weather_forecast", Plugin: "weather", Description: "天气预报"}, nil)
+	sh.RegisterTool("device_ctl_cmdrun", sdk.ToolDef{Name: "device_ctl_cmdrun", Plugin: "remotedevice", Description: "下发命令"}, nil)
+
+	a := New(AgentConfig{ID: "t", StageHost: sh})
+
+	out := a.executeGetPluginTools("weather")
+	if !strings.Contains(out, "weather_current") || !strings.Contains(out, "weather_forecast") {
+		tmp.Fatalf("weather tools missing:\n%s", out)
+	}
+	if strings.Contains(out, "device_ctl_cmdrun") {
+		tmp.Fatalf("should not contain other plugin:\n%s", out)
+	}
+	all := a.executeGetPluginTools("")
+	if !strings.Contains(all, "weather_current") || !strings.Contains(all, "device_ctl_cmdrun") {
+		tmp.Fatalf("all tools missing:\n%s", all)
+	}
+	none := a.executeGetPluginTools("nope")
+	if !strings.Contains(none, "没有可用的工具") {
+		tmp.Fatalf("unknown plugin msg:\n%s", none)
+	}
+}

internal/agent/core/plugins.go

@@ -1,6 +1,7 @@
 package core
 
 import (
+	"encoding/json"
 	"fmt"
 	"log"
 	"strings"
@@ -50,3 +51,61 @@ func (a *Agent) resolveToolPlugin(name string) string {
 	}
 	return "core"
 }
+
+// executeGetPluginTools 返回指定插件的完整工具定义(名称/参数/用途)。
+// 支持按插件名拉取, 未指定时返回全部插件的工具摘要。
+func (a *Agent) executeGetPluginTools(pluginName string) string {
+	type toolItem struct {
+		name, desc string
+		params     interface{}
+	}
+	var items []toolItem
+
+	// 收集 StageHost(SDK 插件)工具
+	if a.stageHost != nil {
+		for _, d := range a.stageHost.GetToolDefs() {
+			plg := d.Plugin
+			if plg == "" {
+				plg = a.resolveToolPlugin(d.Name)
+			}
+			if pluginName != "" && plg != pluginName {
+				continue
+			}
+			items = append(items, toolItem{d.Name, d.Description, d.Parameters})
+		}
+	}
+	// 收集 IOManager(设备/通道)工具
+	if a.io != nil {
+		for _, d := range a.io.GetAllTools() {
+			plg := a.resolveToolPlugin(d.Name)
+			if pluginName != "" && plg != pluginName {
+				continue
+			}
+			items = append(items, toolItem{d.Name, d.Description, d.Parameters})
+		}
+	}
+	if len(items) == 0 {
+		if pluginName != "" {
+			return fmt.Sprintf("插件 %s 没有可用的工具定义", pluginName)
+		}
+		return "当前没有可用的工具定义"
+	}
+	var sb strings.Builder
+	if pluginName == "" {
+		sb.WriteString(fmt.Sprintf("共 %d 个工具:\n", len(items)))
+	} else {
+		sb.WriteString(fmt.Sprintf("插件 %s 共 %d 个工具:\n", pluginName, len(items)))
+	}
+	for _, it := range items {
+		sb.WriteString(fmt.Sprintf("\n### %s\n", it.name))
+		if it.desc != "" {
+			sb.WriteString(it.desc + "\n")
+		}
+		if it.params != nil {
+			if b, err := json.Marshal(it.params); err == nil && len(b) < 600 {
+				sb.WriteString("参数: " + string(b) + "\n")
+			}
+		}
+	}
+	return sb.String()
+}

internal/agent/core/toolcall.go

@@ -61,6 +61,9 @@ func (a *Agent) executeToolCallInner(tc agentAPI.ToolCall) string {
 		return a.executeOutputListChannels()
 	case tc.Name == "plgreload":
 		return a.executePluginReload()
+	case tc.Name == "get_plugin_tools":
+		pluginName, _ := tc.Arguments["plugin_name"].(string)
+		return a.executeGetPluginTools(pluginName)
 	case tc.Name == "spawn_child":
 		return a.executeSpawnChild(tc)
 	case tc.Name == "child_result":

internal/agent/core/tooldefs.go

@@ -98,31 +98,42 @@ func (a *Agent) buildToolCatalog() string {
 	if len(defs) == 0 {
 		return ""
 	}
-	var sb strings.Builder
-	sb.WriteString("\n\n【可用工具列表】")
-	seen := make(map[string]bool)
-	for _, d := range defs {
-		t, ok := d.(map[string]interface{})
-		if !ok {
-			continue
-		}
-		fn, ok := t["function"].(map[string]interface{})
+	// 仅注入插件/通道能力摘要，避免全量工具定义污染 system prompt。
+	// 每个插件列：名称 + 能力描述 + 工具数。完整工具定义由 get_plugin_tools 按需拉取。
+	byPlugin := map[string]int{}          // plugin -> 工具数
+	pluginDesc := map[string]string{}     // plugin -> 首个工具描述(作能力概览)
+	var order []string
+	for _, t := range defs {
+		fn, ok := t.(map[string]interface{})["function"].(map[string]interface{})
 		if !ok {
 			continue
 		}
 		name, _ := fn["name"].(string)
-		if name == "" || seen[name] {
+		if name == "" {
 			continue
 		}
-		seen[name] = true
-		desc, _ := fn["description"].(string)
-		sb.WriteString(fmt.Sprintf("\n- %s", name))
-		if desc != "" {
-			if len(desc) > 80 {
-				desc = desc[:80] + "..."
-			}
-			sb.WriteString(": " + desc)
+		plg := a.resolveToolPlugin(name)
+		if _, seen := byPlugin[plg]; !seen {
+			order = append(order, plg)
 		}
+		byPlugin[plg]++
+		if pluginDesc[plg] == "" {
+			desc, _ := fn["description"].(string)
+			if len(desc) > 60 {
+				desc = desc[:60] + "..."
+			}
+			pluginDesc[plg] = desc
+		}
+	}
+	var sb strings.Builder
+	sb.WriteString("\n\n【可用工具能力】\n")
+	sb.WriteString("工具按插件分组注册。需要某个插件的具体工具时，调用 get_plugin_tools(\"{插件名}\") 获取该插件的完整工具定义（名称/参数/用途）。\n")
+	for _, plg := range order {
+		sb.WriteString(fmt.Sprintf("- %s (%d 个工具)", plg, byPlugin[plg]))
+		if d := pluginDesc[plg]; d != "" {
+			sb.WriteString(": " + d)
+		}
+		sb.WriteString("\n")
 	}
 	return sb.String()
 }
@@ -422,6 +433,21 @@ func (a *Agent) buildToolDefs() []interface{} {
 		})
 	}
 
+	// 按插件动态拉取工具定义(避免全量注入提示词污染)
+	tools = append(tools, map[string]interface{}{
+		"type": "function",
+		"function": map[string]interface{}{
+			"name":        "get_plugin_tools",
+			"description": "获取指定插件的完整工具定义(名称/参数/用途)。参数 plugin_name 传插件名(见系统提示的【可用工具能力】列表)。省略时返回全部插件的工具摘要。",
+			"parameters": map[string]interface{}{
+				"type": "object",
+				"properties": map[string]interface{}{
+					"plugin_name": map[string]interface{}{"type": "string", "description": "插件名，如 qq / remotedevice / weather", "default": ""},
+				},
+			},
+		},
+	})
+
 	tools = append(tools, map[string]interface{}{
 		"type": "function",
 		"function": map[string]interface{}{