feat(navigate-tool): add embeddable flag, return embed action for inline views

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/internal/model/route_registry.go

+package model
+
+import "time"
+
+// RouteEntry 前端路由注册表（供 AI 导航工具查询）
+type RouteEntry struct {
+	ID          uint      `gorm:"primaryKey" json:"id"`
+	PageCode    string    `gorm:"type:varchar(100);uniqueIndex" json:"page_code"`
+	PageName    string    `gorm:"type:varchar(200)" json:"page_name"`
+	Module      string    `gorm:"type:varchar(50)" json:"module"` // admin/patient/doctor
+	Route       string    `gorm:"type:varchar(200)" json:"route"`
+	EditRoute   string    `gorm:"type:varchar(200)" json:"edit_route"`
+	AddRoute    string    `gorm:"type:varchar(200)" json:"add_route"`
+	Operations  string    `gorm:"type:jsonb;default:'[]'" json:"operations"` // ["view","create","edit","delete"]
+	RoleAccess  string    `gorm:"type:varchar(100)" json:"role_access"`      // "admin"
+	Description string    `gorm:"type:text" json:"description"`
+	Status      string    `gorm:"type:varchar(20);default:'active'" json:"status"`
+	SortOrder   int       `gorm:"default:0" json:"sort_order"`
+	Embeddable  bool      `gorm:"default:false" json:"embeddable"`
+	CreatedAt   time.Time `json:"created_at"`
+	UpdatedAt   time.Time `json:"updated_at"`
+}

server/pkg/agent/tools/navigate_tool.go

+package tools
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+
+	"internet-hospital/internal/model"
+	agentpkg "internet-hospital/pkg/agent"
+	"internet-hospital/pkg/database"
+)
+
+// NavigateTool 根据用户意图生成页面导航指令
+type NavigateTool struct{}
+
+func (t *NavigateTool) Name() string { return "navigate" }
+func (t *NavigateTool) Description() string {
+	return `根据用户意图导航到指定页面，前端会渲染为可点击的导航卡片。
+常用 page_code：
+- doctor_management: 医生管理（添加/编辑/查看医生）
+- patient_management: 患者管理
+- department_management: 科室管理
+- pharmacy_management: 药品库管理
+- consultation_management: 问诊管理
+- prescription_regulation: 处方监管
+- agent_management: Agent管理
+- tool_center: 工具中心
+- workflow_management: 工作流
+- knowledge_base: 知识库
+- dashboard: 运营大盘`
+}
+
+func (t *NavigateTool) Parameters() []agentpkg.ToolParameter {
+	return []agentpkg.ToolParameter{
+		{Name: "page_code", Type: "string", Description: "目标页面代码，如: doctor_management, patient_management, pharmacy_management", Required: true},
+		{Name: "operation", Type: "string", Description: "操作类型: view_list(查看列表), open_add(打开新增), open_edit(打开编辑)", Required: false, Enum: []string{"view_list", "open_edit", "open_add"}},
+		{Name: "record_id", Type: "string", Description: "编辑/查看的记录ID（operation 为 open_edit 时需要）", Required: false},
+	}
+}
+
+func (t *NavigateTool) Execute(_ context.Context, params map[string]interface{}) (interface{}, error) {
+	pageCode, _ := params["page_code"].(string)
+	if pageCode == "" {
+		return nil, fmt.Errorf("page_code 必填")
+	}
+
+	operation, _ := params["operation"].(string)
+	if operation == "" {
+		operation = "view_list"
+	}
+
+	recordID, _ := params["record_id"].(string)
+
+	db := database.GetDB()
+	if db == nil {
+		return nil, fmt.Errorf("数据库未初始化")
+	}
+
+	var entry model.RouteEntry
+	if err := db.Where("page_code = ? AND status = 'active'", pageCode).First(&entry).Error; err != nil {
+		return nil, fmt.Errorf("页面 %s 不存在或未启用", pageCode)
+	}
+
+	// 构建实际路由（始终以列表页路由为基础，通过 query param 传递操作意图）
+	route := entry.Route
+	actionParams := map[string]interface{}{}
+
+	switch operation {
+	case "open_edit":
+		if recordID != "" {
+			route = route + "?action=edit&id=" + recordID
+			actionParams["action"] = "edit"
+			actionParams["id"] = recordID
+		} else if entry.EditRoute != "" {
+			route = entry.EditRoute
+		}
+	case "open_add":
+		route = route + "?action=add"
+		actionParams["action"] = "add"
+		if recordID != "" {
+			route = route + "&parent_id=" + recordID
+			actionParams["parent_id"] = recordID
+		}
+	}
+
+	// 解析支持的操作
+	var ops []string
+	json.Unmarshal([]byte(entry.Operations), &ops)
+
+	// Determine action type: embed (inline in chat) or navigate (open page)
+	actionType := "navigate"
+	if entry.Embeddable {
+		actionType = "embed"
+	}
+
+	return map[string]interface{}{
+		"action":      actionType,
+		"page":        entry.PageName,
+		"page_code":   entry.PageCode,
+		"module":      entry.Module,
+		"operation":   operation,
+		"route":       route,
+		"params":      actionParams,
+		"operations":  ops,
+		"description": entry.Description,
+		"embeddable":  entry.Embeddable,
+	}, nil
+}