refactor: split agent.go into 12 files + add mcp_restart_server tool

internal/agent/core/utils.go

@@ -0,0 +1,69 @@
+package core
+
+import (
+	"fmt"
+	"strings"
+	"unicode/utf8"
+
+	"gitcode.com/JianFeeeee/HomeAgent/internal/knowledge"
+)
+
+func getString(m map[string]interface{}, key string) string {
+	if v, ok := m[key]; ok {
+		if s, ok := v.(string); ok {
+			return s
+		}
+	}
+	return ""
+}
+
+func getFloat(m map[string]interface{}, key string) float64 {
+	if v, ok := m[key]; ok {
+		switch n := v.(type) {
+		case float64:
+			return n
+		case int:
+			return float64(n)
+		}
+	}
+	return 0
+}
+
+func truncateStr(s string, max int) string {
+	if utf8.RuneCountInString(s) <= max {
+		return s
+	}
+	var truncated int
+	for i := range s {
+		if truncated >= max {
+			return s[:i] + "..."
+		}
+		truncated++
+	}
+	return s
+}
+
+func formatTree(node *knowledge.TreeIndex, depth int) string {
+	var sb strings.Builder
+	indent := strings.Repeat("  ", depth)
+	for _, child := range node.Children {
+		sb.WriteString(fmt.Sprintf("%s%s/\n", indent, child.Name))
+		sb.WriteString(formatTree(child, depth+1))
+	}
+	for _, item := range node.Items {
+		preview := item.Preview
+		if len([]rune(preview)) > 60 {
+			preview = string([]rune(preview)[:60]) + "..."
+		}
+		tags := ""
+		if len(item.Tags) > 0 {
+			tags = " [" + strings.Join(item.Tags, ", ") + "]"
+		}
+		sb.WriteString(fmt.Sprintf("%s· %s%s\n", indent, item.Name, tags))
+		sb.WriteString(fmt.Sprintf("%s  %s\n", indent, preview))
+	}
+	if sb.Len() == 0 {
+		sb.WriteString("(空)")
+	}
+	return sb.String()
+}