From 8de9d03cad67d6944d40567bff90350d132d60b0 Mon Sep 17 00:00:00 2001
From: ai_xiaopei <xiaopei@aisim.cn>
Date: Sun, 26 Jul 2026 09:54:11 +0800
Subject: [PATCH] feat: add index gc command for cleaning orphan nodes

---
 cmd/root.go |   58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 files changed, 54 insertions(+), 4 deletions(-)

diff --git a/cmd/root.go b/cmd/root.go
index 0726524..fca90d1 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -3,6 +3,7 @@
 import (
 	"fmt"
 	"os"
+	"strings"
 
 	"github.com/spf13/cobra"
 )
@@ -12,16 +13,57 @@
 	dbPath    string
 )
 
+// buildLong 为父命令动态生成 Long,格式:# cmd - Short\n子命令详细用法
+func buildLong(cmd *cobra.Command) string {
+	var sb strings.Builder
+	sb.WriteString(fmt.Sprintf("# %s - %s\n", cmd.Name(), cmd.Short))
+	for _, sub := range cmd.Commands() {
+		if sub.Hidden {
+			continue
+		}
+		if sub.Long != "" {
+			sb.WriteString(sub.Long)
+			// 确保 Long 末尾有换行
+			if !strings.HasSuffix(sub.Long, "\n") {
+				sb.WriteString("\n")
+			}
+		} else {
+			sb.WriteString(fmt.Sprintf("%s # %s\n", sub.CommandPath(), sub.Short))
+		}
+	}
+	return sb.String()
+}
+
 var rootCmd = &cobra.Command{
 	Use:   "kb",
-	Short: "知识库 CLI 工具",
-	Long:  "kb-cli: 知识库搜索与管理工具,支持知识图谱搜索",
+	Short: "知识库搜索与管理工具",
+	Long: `kb - 知识库搜索与管理工具
+
+Global: [--vault=<路径>] [--db=<路径>]`,
 }
 
 func Execute() {
+	// 为每个父命令动态生成 Long(包含子命令详细用法)
+	for _, cmd := range rootCmd.Commands() {
+		if cmd.HasAvailableSubCommands() && !cmd.Hidden {
+			cmd.Long = buildLong(cmd)
+		}
+	}
+
+	// root Long = 头部 + 所有一级子命令的 Long
+	var sb strings.Builder
+	sb.WriteString(rootCmd.Long)
+	for _, cmd := range rootCmd.Commands() {
+		if cmd.Hidden {
+			continue
+		}
+		sb.WriteString("\n")
+		sb.WriteString(cmd.Long)
+	}
+	rootCmd.Long = sb.String()
+
 	if err := rootCmd.Execute(); err != nil {
-		fmt.Fprintln(os.Stderr, err)
-		os.Exit(1)
+		cobra.CheckErr(err)
 	}
 }
 
@@ -35,4 +77,12 @@
 
 	rootCmd.PersistentFlags().StringVar(&vaultPath, "vault", defaultVault, "知识库根目录")
 	rootCmd.PersistentFlags().StringVar(&dbPath, "db", defaultDB, "索引数据库路径")
+
+	// 自定义 help 模板:只输出 Long
+	helpTemplate := `{{.Long}}`
+	rootCmd.SetUsageTemplate(helpTemplate)
+	rootCmd.SetHelpTemplate(helpTemplate)
+
+	rootCmd.SilenceUsage = true
+	rootCmd.SilenceErrors = true
 }

--
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